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First real copy-on-write implementation

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Andrea Cavalli 2019-01-31 20:05:23 +01:00
parent 740db59b62
commit a772ac5431
43 changed files with 2851 additions and 661 deletions
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2
pom.xml
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@ -6,7 +6,7 @@
<groupId>org.warp</groupId>
<artifactId>jcwdb</artifactId>
<version>1.2-SNAPSHOT</version>
<version>1.3</version>
<name>jcwdb</name>
<!-- FIXME change it to the project's website -->

44
src/main/java/org/warp/cowdb/BlockInfo.java Normal file
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@ -0,0 +1,44 @@
package org.warp.cowdb;
import java.util.Objects;
import java.util.StringJoiner;
public class BlockInfo {
private final long index;
private final int size;
public BlockInfo(long index, int size) {
this.index = index;
this.size = size;
}
public long getIndex() {
return index;
}
public int getSize() {
return size;
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
BlockInfo blockInfo = (BlockInfo) o;
return index == blockInfo.index &&
size == blockInfo.size;
}
@Override
public int hashCode() {
return Objects.hash(index, size);
}
@Override
public String toString() {
return new StringJoiner(", ", BlockInfo.class.getSimpleName() + "[", "]")
.add("index=" + index)
.add("size=" + size)
.toString();
}
}

33
src/main/java/org/warp/cowdb/ByteBufferBackedInputStream.java Normal file
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@ -0,0 +1,33 @@
package org.warp.cowdb;
import java.io.IOException;
import java.io.InputStream;
import java.nio.ByteBuffer;
public class ByteBufferBackedInputStream extends InputStream {
ByteBuffer buf;
public ByteBufferBackedInputStream(ByteBuffer buf) {
this.buf = buf;
}
public int read() throws IOException {
if (!buf.hasRemaining()) {
return -1;
}
return buf.get() & 0xFF;
}
public int read(byte[] bytes, int off, int len)
throws IOException {
if (!buf.hasRemaining()) {
return -1;
}
len = Math.min(len, buf.remaining());
buf.get(bytes, off, len);
return len;
}
}

839
src/main/java/org/warp/cowdb/Database.java Normal file
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@ -0,0 +1,839 @@
package org.warp.cowdb;
import com.esotericsoftware.kryo.Kryo;
import com.esotericsoftware.kryo.io.ByteBufferInput;
import com.esotericsoftware.kryo.io.ByteBufferInputStream;
import com.esotericsoftware.kryo.io.Input;
import com.esotericsoftware.kryo.io.Output;
import it.unimi.dsi.fastutil.longs.LongArrayList;
import org.apache.commons.lang3.reflect.FieldUtils;
import org.warp.jcwdb.ann.*;
import java.io.ByteArrayOutputStream;
import java.io.IOError;
import java.io.IOException;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.nio.ByteBuffer;
import java.nio.channels.SeekableByteChannel;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.StandardOpenOption;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.function.Supplier;
import static org.warp.cowdb.IBlocksMetadata.EMPTY_BLOCK_ID;
import static org.warp.cowdb.IBlocksMetadata.EMPTY_BLOCK_INFO;
public class Database implements IDatabase {
private final DatabaseFileIO fileIO;
private final DatabaseBlocksIO blocksIO;
private final DatabaseBlocksMetadata blocksMetadata;
private final DatabaseReferencesIO referencesIO;
private final DatabaseReferencesMetadata referencesMetadata;
private final DatabaseObjectsIO objectsIO;
private final DatabaseDataInitializer dataInitializer;
private EnhancedObject loadedRootObject;
public Database(Path dataFile, Path blocksMetaFile, Path referencesMetaFile) throws IOException {
if (Files.notExists(dataFile)) {
Files.createFile(dataFile);
}
if (Files.notExists(blocksMetaFile)) {
Files.createFile(blocksMetaFile);
}
if (Files.notExists(referencesMetaFile)) {
Files.createFile(referencesMetaFile);
}
this.fileIO = new DatabaseFileIO(dataFile);
this.blocksMetadata = new DatabaseBlocksMetadata(blocksMetaFile);
this.blocksIO = new DatabaseBlocksIO(fileIO, blocksMetadata);
this.referencesMetadata = new DatabaseReferencesMetadata(referencesMetaFile);
this.referencesIO = new DatabaseReferencesIO(blocksIO, referencesMetadata);
this.objectsIO = new DatabaseObjectsIO(this, referencesIO);
this.dataInitializer = new DatabaseDataInitializer(objectsIO);
}
@Override
public IDataInitializer getDataInitializer() {
return dataInitializer;
}
@Override
public IObjectsIO getObjectsIO() {
return objectsIO;
}
@Override
public void close() throws IOException {
this.objectsIO.setEnhancedObject(0, loadedRootObject);
this.referencesMetadata.close();
this.blocksMetadata.close();
this.fileIO.close();
}
public <T extends EnhancedObject> T loadRoot(Class<T> type) throws IOException {
return loadRoot(type, () -> {
T obj = objectsIO.instantiateEnhancedObject(type);
dataInitializer.initializeDBObject(obj);
return obj;
});
}
public <T extends EnhancedObject> T loadRoot(Class<T> type, SupplierWithIO<T> ifAbsent) throws IOException {
if (loadedRootObject != null) {
throw new RuntimeException("Root already set!");
}
T root;
if (referencesMetadata.firstFreeReference > 0) {
root = objectsIO.loadEnhancedObject(0, type);
} else {
if (objectsIO.newNullObject() != 0) {
throw new IOException("Can't allocate root!");
} else {
root = ifAbsent.getWithIO();
objectsIO.setEnhancedObject(0, root);
}
}
loadedRootObject = root;
return root;
}
public static class DatabaseDataInitializer implements IDataInitializer {
private final DatabaseObjectsIO objectsIO;
public DatabaseDataInitializer(DatabaseObjectsIO objectsIO) {
this.objectsIO = objectsIO;
}
@Override
public void initializeDBObject(EnhancedObject obj) throws IOException {
initializeDBObjectFields(obj);
initializeDBObjectProperties(obj);
obj.initialize();
}
private void initializeDBObjectFields(EnhancedObject obj) throws IOException {
// Declare the variables needed to get the biggest field Id
Field[] unorderedFields = objectsIO.getFields(obj);
// Find the biggest field Id
int biggestFieldId = objectsIO.getBiggestFieldId(unorderedFields);
// Allocate new UIDs
long[] fieldUIDs = objectsIO.allocateNewUIDs(biggestFieldId + 1);
// Declare the other variables
Field[] fields = new Field[biggestFieldId + 1];
DBDataType[] orderedFieldTypes = new DBDataType[biggestFieldId + 1];
// Load all fields metadata and load them
for (Field field : unorderedFields) {
DBField fieldAnnotation = field.getAnnotation(DBField.class);
int fieldId = fieldAnnotation.id();
DBDataType fieldType = fieldAnnotation.type();
objectsIO.loadField(obj, field, fieldType, fieldUIDs[fieldId]);
fields[fieldId] = field;
orderedFieldTypes[fieldId] = fieldType;
}
// Set fields metadata
obj.setFields(fields, orderedFieldTypes, fieldUIDs);
}
private void initializeDBObjectProperties(EnhancedObject obj) throws IOException {
// Declare the variables needed to get the biggest property Id
Method[] unorderedPropertyGetters = obj.getPropertyGetters();
Method[] unorderedPropertySetters = obj.getPropertySetters();
// Find the biggest property Id
int biggestGetter = objectsIO.getBiggestPropertyGetterId(unorderedPropertyGetters);
int biggestSetter = objectsIO.getBiggestPropertySetterId(unorderedPropertySetters);
int biggestPropertyId = biggestGetter > biggestSetter ? biggestGetter : biggestSetter;
// Allocate new UIDs
long[] propertyUIDs = objectsIO.allocateNewUIDs(biggestPropertyId + 1);
for (Method property : unorderedPropertySetters) {
DBPropertySetter fieldAnnotation = property.getAnnotation(DBPropertySetter.class);
int propertyId = fieldAnnotation.id();
if (propertyId > biggestPropertyId) {
biggestPropertyId = propertyId;
}
}
// Declare the other variables
DBDataType[] propertyTypes = new DBDataType[biggestPropertyId + 1];
Method[] propertyGetters = new Method[biggestPropertyId + 1];
Method[] propertySetters = new Method[biggestPropertyId + 1];
Map<String, DBPropertySetter> setterMethods = new LinkedHashMap<>();
Map<String, DBPropertyGetter> getterMethods = new LinkedHashMap<>();
// Load the properties metadata
for (Method property : unorderedPropertyGetters) {
DBPropertyGetter propertyAnnotation = property.getAnnotation(DBPropertyGetter.class);
int propertyId = propertyAnnotation.id();
DBDataType propertyType = propertyAnnotation.type();
propertyTypes[propertyId] = propertyType;
propertyGetters[propertyId] = property;
getterMethods.put(property.getName(), propertyAnnotation);
}
for (Method property : unorderedPropertySetters) {
DBPropertySetter propertyAnnotation = property.getAnnotation(DBPropertySetter.class);
int propertyId = propertyAnnotation.id();
DBDataType propertyType = propertyAnnotation.type();
propertyTypes[propertyId] = propertyType;
propertySetters[propertyId] = property;
setterMethods.put(property.getName(), propertyAnnotation);
}
// Set properties metadata
obj.setProperties(propertyGetters, propertySetters, propertyTypes, propertyUIDs, setterMethods, getterMethods);
}
}
public static class DatabaseObjectsIO implements IObjectsIO {
private final IDatabase database;
private final DatabaseReferencesIO referencesIO;
private Kryo kryo = new Kryo();
private DatabaseObjectsIO(IDatabase database, DatabaseReferencesIO referencesIO) {
this.database = database;
this.referencesIO = referencesIO;
}
@Override
public <T extends EnhancedObject> T loadEnhancedObject(long reference, Class<T> objectType) throws IOException {
ByteBuffer buffer = referencesIO.readFromReference(reference);
if (buffer.limit() == 0) {
return null;
}
int fieldsCount = buffer.getInt();
int methodsCount = buffer.getInt();
long[] fieldRefs = new long[fieldsCount];
long[] methodRefs = new long[methodsCount];
for (int i = 0; i < fieldsCount; i++) {
fieldRefs[i] = buffer.getLong();
}
for (int i = 0; i < methodsCount; i++) {
methodRefs[i] = buffer.getLong();
}
return preloadEnhancedObject(objectType, fieldRefs, methodRefs);
}
@SuppressWarnings("unchecked")
private Object loadData(DBDataType propertyType, long dataReference, Supplier<Class<?>> returnType) throws IOException {
switch (propertyType) {
case DATABASE_OBJECT:
return loadEnhancedObject(dataReference, (Class<? extends EnhancedObject>) returnType.get());
case OBJECT:
return loadObject(dataReference);
case REFERENCES_LIST:
return loadReferencesList(dataReference);
case BOOLEAN:
return loadBoolean(dataReference);
case BYTE:
return loadByte(dataReference);
case SHORT:
return loadShort(dataReference);
case CHAR:
return loadChar(dataReference);
case INTEGER:
return loadInt(dataReference);
case LONG:
return loadLong(dataReference);
default:
throw new NullPointerException("Unknown data type");
}
}
private <T> void setData(long reference, DBDataType propertyType, T loadedPropertyValue) throws IOException {
switch (propertyType) {
case BOOLEAN:
setBoolean(reference, loadedPropertyValue != null && (boolean) loadedPropertyValue);
break;
case BYTE:
setByte(reference, loadedPropertyValue == null ? 0 : (byte) loadedPropertyValue);
break;
case SHORT:
setShort(reference, loadedPropertyValue == null ? 0 : (short) loadedPropertyValue);
break;
case CHAR:
setChar(reference, loadedPropertyValue == null ? 0 : (char) loadedPropertyValue);
break;
case INTEGER:
setInt(reference, loadedPropertyValue == null ? 0 : (int) loadedPropertyValue);
break;
case LONG:
setLong(reference, loadedPropertyValue == null ? 0 : (long) loadedPropertyValue);
break;
case OBJECT:
setObject(reference, loadedPropertyValue);
break;
case REFERENCES_LIST:
setReferencesList(reference, (LongArrayList) loadedPropertyValue);
break;
case DATABASE_OBJECT:
setEnhancedObject(reference, (EnhancedObject) loadedPropertyValue);
break;
}
}
@Override
public <T extends EnhancedObject> void setEnhancedObject(long reference, T value) throws IOException {
if (value != null) {
EnhancedObjectFullInfo objectFullInfo = value.getAllInfo();
int totalSize = Integer.BYTES * 2 + objectFullInfo.getFieldReferences().length * Long.BYTES + objectFullInfo.getPropertyReferences().length * Long.BYTES;
ByteBuffer buffer = ByteBuffer.allocate(totalSize);
buffer.putInt(objectFullInfo.getFieldReferences().length);
buffer.putInt(objectFullInfo.getPropertyReferences().length);
for (int i = 0; i < objectFullInfo.getFieldReferences().length; i++) {
buffer.putLong(objectFullInfo.getFieldReferences()[i]);
}
for (int i = 0; i < objectFullInfo.getPropertyReferences().length; i++) {
buffer.putLong(objectFullInfo.getPropertyReferences()[i]);
}
for (int i = 0; i < objectFullInfo.getFieldReferences().length; i++) {
try {
setData(objectFullInfo.getFieldReferences()[i], objectFullInfo.getFieldTypes()[i], objectFullInfo.getFields()[i].get(value));
} catch (IllegalAccessException e) {
throw new IOError(e);
}
}
for (int i = 0; i < objectFullInfo.getPropertyReferences().length; i++) {
setData(objectFullInfo.getPropertyReferences()[i], objectFullInfo.getPropertyTypes()[i], objectFullInfo.getLoadedPropertyValues()[i]);
}
buffer.flip();
referencesIO.writeToReference(reference, totalSize, buffer);
} else {
referencesIO.writeToReference(reference, 0, null);
}
}
@SuppressWarnings("unchecked")
@Override
public <T> T loadObject(long reference) throws IOException {
ByteBuffer buffer = referencesIO.readFromReference(reference);
if (buffer.limit() == 0) {
return null;
}
buffer.rewind();
byte[] data = buffer.array();
return (T) kryo.readClassAndObject(new Input(data));
}
@Override
public LongArrayList loadReferencesList(long reference) throws IOException {
ByteBuffer buffer = referencesIO.readFromReference(reference);
if (buffer.limit() == 0) {
return null;
}
int itemsCount = buffer.getInt();
LongArrayList arrayList = new LongArrayList();
for (int i = 0; i < itemsCount; i++) {
arrayList.add(buffer.getLong());
}
return arrayList;
}
@Override
public boolean loadBoolean(long reference) throws IOException {
ByteBuffer buffer = referencesIO.readFromReference(reference);
if (buffer.limit() == 0) {
return false;
}
return buffer.get() == 1;
}
@Override
public byte loadByte(long reference) throws IOException {
ByteBuffer buffer = referencesIO.readFromReference(reference);
if (buffer.limit() == 0) {
return 0;
}
return buffer.get();
}
@Override
public short loadShort(long reference) throws IOException {
ByteBuffer buffer = referencesIO.readFromReference(reference);
if (buffer.limit() == 0) {
return 0;
}
return buffer.getShort();
}
@Override
public char loadChar(long reference) throws IOException {
ByteBuffer buffer = referencesIO.readFromReference(reference);
if (buffer.limit() == 0) {
return 0;
}
return buffer.getChar();
}
@Override
public int loadInt(long reference) throws IOException {
ByteBuffer buffer = referencesIO.readFromReference(reference);
if (buffer.limit() == 0) {
return 0;
}
return buffer.getInt();
}
@Override
public long loadLong(long reference) throws IOException {
ByteBuffer buffer = referencesIO.readFromReference(reference);
if (buffer.limit() == 0) {
return 0;
}
return buffer.getLong();
}
@Override
public <T> void setObject(long reference, T value) throws IOException {
if (value != null) {
ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
Output output = new Output(outputStream);
kryo.writeClassAndObject(output, value);
output.flush();
byte[] data = outputStream.toByteArray();
ByteBuffer dataByteBuffer = ByteBuffer.wrap(data);
referencesIO.writeToReference(reference, data.length, dataByteBuffer);
} else {
referencesIO.writeToReference(reference, 0, null);
}
}
@Override
public void setReferencesList(long reference, LongArrayList value) throws IOException {
if (value != null) {
int items = value.size();
ByteBuffer buffer = ByteBuffer.allocate(Long.BYTES * items + Integer.BYTES);
buffer.putInt(items);
for (int i = 0; i < items; i++) {
buffer.putLong(value.getLong(i));
}
buffer.flip();
referencesIO.writeToReference(reference, buffer.limit(), buffer);
} else {
referencesIO.writeToReference(reference, 0, null);
}
}
@Override
public void setBoolean(long reference, boolean value) throws IOException {
ByteBuffer buffer = ByteBuffer.allocate(Byte.BYTES);
buffer.put(value ? (byte) 1 : (byte) 0);
buffer.flip();
referencesIO.writeToReference(reference, Byte.BYTES, buffer);
}
@Override
public void setByte(long reference, byte value) throws IOException {
ByteBuffer buffer = ByteBuffer.allocate(Byte.BYTES);
buffer.put(value);
buffer.flip();
referencesIO.writeToReference(reference, Byte.BYTES, buffer);
}
@Override
public void setShort(long reference, short value) throws IOException {
ByteBuffer buffer = ByteBuffer.allocate(Short.BYTES);
buffer.putShort(value);
buffer.flip();
referencesIO.writeToReference(reference, Short.BYTES, buffer);
}
@Override
public void setChar(long reference, char value) throws IOException {
ByteBuffer buffer = ByteBuffer.allocate(Character.BYTES);
buffer.putChar(value);
buffer.flip();
referencesIO.writeToReference(reference, Character.BYTES, buffer);
}
@Override
public void setInt(long reference, int value) throws IOException {
ByteBuffer buffer = ByteBuffer.allocate(Integer.BYTES);
buffer.putInt(value);
buffer.flip();
referencesIO.writeToReference(reference, Integer.BYTES, buffer);
}
@Override
public void setLong(long reference, long value) throws IOException {
ByteBuffer buffer = ByteBuffer.allocate(Long.BYTES);
buffer.putLong(value);
buffer.flip();
referencesIO.writeToReference(reference, Long.BYTES, buffer);
}
@Override
public long newNullObject() throws IOException {
return referencesIO.allocateReference();
}
@Override
public void loadProperty(EnhancedObject obj, int propertyId, Method property, DBDataType propertyType, long propertyUID) throws IOException {
obj.setProperty(propertyId, loadData(propertyType, propertyUID, property::getReturnType));
}
private <T extends EnhancedObject> void preloadEnhancedObjectProperties(T obj, long[] propertyReferences) {
// Declare the variables needed to get the biggest property Id
Method[] unorderedPropertyGetters = obj.getPropertyGetters();
Method[] unorderedPropertySetters = obj.getPropertySetters();
// Find the biggest property Id
int biggestGetter = getBiggestPropertyGetterId(unorderedPropertyGetters);
int biggestSetter = getBiggestPropertySetterId(unorderedPropertySetters);
int biggestPropertyId = biggestGetter > biggestSetter ? biggestGetter : biggestSetter;
for (Method property : unorderedPropertySetters) {
DBPropertySetter fieldAnnotation = property.getAnnotation(DBPropertySetter.class);
int propertyId = fieldAnnotation.id();
if (propertyId > biggestPropertyId) {
biggestPropertyId = propertyId;
}
}
// Declare the other variables
DBDataType[] propertyTypes = new DBDataType[biggestPropertyId + 1];
Method[] propertyGetters = new Method[biggestPropertyId + 1];
Method[] propertySetters = new Method[biggestPropertyId + 1];
Map<String, DBPropertySetter> setterMethods = new LinkedHashMap<>();
Map<String, DBPropertyGetter> getterMethods = new LinkedHashMap<>();
// Load the properties metadata
for (Method property : unorderedPropertyGetters) {
DBPropertyGetter propertyAnnotation = property.getAnnotation(DBPropertyGetter.class);
int propertyId = propertyAnnotation.id();
DBDataType propertyType = propertyAnnotation.type();
propertyTypes[propertyId] = propertyType;
propertyGetters[propertyId] = property;
getterMethods.put(property.getName(), propertyAnnotation);
}
for (Method property : unorderedPropertySetters) {
DBPropertySetter propertyAnnotation = property.getAnnotation(DBPropertySetter.class);
int propertyId = propertyAnnotation.id();
DBDataType propertyType = propertyAnnotation.type();
propertyTypes[propertyId] = propertyType;
propertySetters[propertyId] = property;
setterMethods.put(property.getName(), propertyAnnotation);
}
// Set properties metadata
obj.setProperties(propertyGetters, propertySetters, propertyTypes, propertyReferences, setterMethods, getterMethods);
}
private int getBiggestPropertyGetterId(Method[] unorderedPropertyGetters) {
int biggestPropertyId = -1;
for (Method property : unorderedPropertyGetters) {
DBPropertyGetter fieldAnnotation = property.getAnnotation(DBPropertyGetter.class);
int propertyId = fieldAnnotation.id();
if (propertyId > biggestPropertyId) {
biggestPropertyId = propertyId;
}
}
return biggestPropertyId;
}
private int getBiggestPropertySetterId(Method[] unorderedPropertySetters) {
int biggestPropertyId = -1;
for (Method property : unorderedPropertySetters) {
DBPropertySetter fieldAnnotation = property.getAnnotation(DBPropertySetter.class);
int propertyId = fieldAnnotation.id();
if (propertyId > biggestPropertyId) {
biggestPropertyId = propertyId;
}
}
return biggestPropertyId;
}
private <T extends EnhancedObject> void preloadEnhancedObjectFields(T obj, long[] fieldReferences) throws IOException {
// Declare the variables needed to get the biggest field Id
Field[] unorderedFields = getFields(obj);
// Find the biggest field Id
int biggestFieldId = getBiggestFieldId(unorderedFields);
// Declare the other variables
Field[] fields = new Field[biggestFieldId + 1];
DBDataType[] orderedFieldTypes = new DBDataType[biggestFieldId + 1];
// Load all fields metadata and load them
for (Field field : unorderedFields) {
DBField fieldAnnotation = field.getAnnotation(DBField.class);
int fieldId = fieldAnnotation.id();
DBDataType fieldType = fieldAnnotation.type();
loadField(obj, field, fieldType, fieldReferences[fieldId]);
fields[fieldId] = field;
orderedFieldTypes[fieldId] = fieldType;
}
// Set fields metadata
obj.setFields(fields, orderedFieldTypes, fieldReferences);
}
private <T extends EnhancedObject> void loadField(T obj, Field field, DBDataType fieldType, long fieldReference) throws IOException {
Object data = loadData(fieldType, fieldReference, field::getType);
try {
if (fieldType == DBDataType.OBJECT && data != null) {
if (!field.getType().isInstance(data)) {
throw new IOException("There is an attempt to load an object of type " + data.getClass() + " into a field of type " + field.getType());
}
}
FieldUtils.writeField(field, obj, data, true);
} catch (IllegalAccessException e) {
throw new RuntimeException(e);
}
}
private <T extends EnhancedObject> Field[] getFields(T obj) {
return FieldUtils.getFieldsWithAnnotation(obj.getClass(), DBField.class);
}
private int getBiggestFieldId(Field[] unorderedFields) {
int biggestFieldId = -1;
for (Field field : unorderedFields) {
DBField fieldAnnotation = field.getAnnotation(DBField.class);
int propertyId = fieldAnnotation.id();
if (propertyId > biggestFieldId) {
biggestFieldId = propertyId;
}
}
return biggestFieldId;
}
private <T extends EnhancedObject> T instantiateEnhancedObject(Class<T> type) throws IOException {
try {
T obj = type.getConstructor().newInstance();
obj.database = database;
return obj;
} catch (NoSuchMethodException e) {
throw new IOException("You must declare a public empty constructor in class " + type + ": public " + type.getSimpleName() + "()", e);
} catch (IllegalAccessException | InvocationTargetException | InstantiationException e) {
throw new IOException(e);
}
}
private <T extends EnhancedObject> T preloadEnhancedObject(Class<T> objectType, long[] fieldRefs, long[] methodRefs) throws IOException {
T obj = instantiateEnhancedObject(objectType);
preloadEnhancedObjectFields(obj, fieldRefs);
preloadEnhancedObjectProperties(obj, methodRefs);
return obj;
}
public long[] allocateNewUIDs(int quantity) throws IOException {
long[] ids = new long[quantity];
for (int i = 0; i < quantity; i++) {
ids[i] = newNullObject();
}
return ids;
}
}
public static class DatabaseReferencesIO implements IReferencesIO {
private final DatabaseBlocksIO blocksIO;
private final DatabaseReferencesMetadata referencesMetadata;
public DatabaseReferencesIO(DatabaseBlocksIO blocksIO, DatabaseReferencesMetadata referencesMetadata) {
this.blocksIO = blocksIO;
this.referencesMetadata = referencesMetadata;
}
@Override
public long allocateReference() throws IOException {
return referencesMetadata.newReference(EMPTY_BLOCK_ID);
}
@Override
public long allocateReference(int size, ByteBuffer data) throws IOException {
long blockId = (size == 0) ? EMPTY_BLOCK_ID : blocksIO.newBlock(size, data);
return referencesMetadata.newReference(blockId);
}
@Override
public void writeToReference(long reference, int size, ByteBuffer data) throws IOException {
long blockId = (size == 0) ? EMPTY_BLOCK_ID : blocksIO.newBlock(size, data);
referencesMetadata.editReference(reference, blockId);
}
@Override
public ByteBuffer readFromReference(long reference) throws IOException {
long blockId = referencesMetadata.getReference(reference);
return blocksIO.readBlock(blockId);
}
}
public static class DatabaseReferencesMetadata implements IReferencesMetadata {
private final SeekableByteChannel metaFileChannel;
private final int REF_META_BYTES_COUNT = Long.BYTES;
private long metaFileChannelSize;
private long firstFreeReference;
private DatabaseReferencesMetadata(Path refMetaFile) throws IOException {
metaFileChannel = Files.newByteChannel(refMetaFile, StandardOpenOption.READ, StandardOpenOption.WRITE);
metaFileChannelSize = metaFileChannel.size();
firstFreeReference = metaFileChannelSize / REF_META_BYTES_COUNT;
}
@Override
public long getReference(long reference) throws IOException {
ByteBuffer buffer = ByteBuffer.allocate(REF_META_BYTES_COUNT);
if (reference >= firstFreeReference || reference * REF_META_BYTES_COUNT > metaFileChannelSize) {
return EMPTY_BLOCK_ID;
}
SeekableByteChannel currentFileChannel = metaFileChannel.position(reference * REF_META_BYTES_COUNT);
currentFileChannel.read(buffer);
buffer.flip();
return buffer.getLong();
}
@Override
public long newReference(long blockId) throws IOException {
long newReference = firstFreeReference++;
editReference(newReference, blockId);
return newReference;
}
@Override
public void editReference(long reference, long blockId) throws IOException {
ByteBuffer data = ByteBuffer.allocate(REF_META_BYTES_COUNT);
data.putLong(blockId);
SeekableByteChannel currentFileChannel = metaFileChannel.position(reference * REF_META_BYTES_COUNT);
data.flip();
currentFileChannel.write(data);
}
@Override
public void close() throws IOException {
metaFileChannel.close();
}
}
public static class DatabaseBlocksIO implements IBlocksIO {
private final DatabaseFileIO fileIO;
private final IBlocksMetadata blocksMetadata;
private DatabaseBlocksIO(DatabaseFileIO fileIO, IBlocksMetadata blocksMetadata) {
this.fileIO = fileIO;
this.blocksMetadata = blocksMetadata;
}
@Override
public long newBlock(int size, ByteBuffer data) throws IOException {
long index = fileIO.writeAtEnd(size, data);
return blocksMetadata.newBlock(index, size);
}
@Override
public ByteBuffer readBlock(long blockId) throws IOException {
if (blockId == EMPTY_BLOCK_ID) {
return ByteBuffer.wrap(new byte[0]);
}
BlockInfo blockInfo = blocksMetadata.getBlockInfo(blockId);
return fileIO.readAt(blockInfo.getIndex(), blockInfo.getSize());
}
@Override
public void close() {
}
}
public static class DatabaseBlocksMetadata implements IBlocksMetadata {
private final SeekableByteChannel metaFileChannel;
private final int BLOCK_META_BYTES_COUNT = Long.BYTES + Integer.BYTES;
private long firstFreeBlock;
private DatabaseBlocksMetadata(Path metaFile) throws IOException {
metaFileChannel = Files.newByteChannel(metaFile, StandardOpenOption.READ, StandardOpenOption.WRITE);
firstFreeBlock = metaFileChannel.size() / BLOCK_META_BYTES_COUNT;
}
@Override
public BlockInfo getBlockInfo(long blockId) throws IOException {
if (blockId == EMPTY_BLOCK_ID) {
return EMPTY_BLOCK_INFO;
}
ByteBuffer buffer = ByteBuffer.allocate(BLOCK_META_BYTES_COUNT);
metaFileChannel.position(blockId * BLOCK_META_BYTES_COUNT).read(buffer);
buffer.flip();
long index = buffer.getLong();
int size = buffer.getInt();
return new BlockInfo(index, size);
}
@Override
public long newBlock(long index, int size) throws IOException {
long newBlockId = firstFreeBlock++;
ByteBuffer data = ByteBuffer.allocate(BLOCK_META_BYTES_COUNT);
data.putLong(index);
data.putInt(size);
data.flip();
metaFileChannel.position(newBlockId * BLOCK_META_BYTES_COUNT).write(data);
return newBlockId;
}
@Override
public void close() throws IOException {
metaFileChannel.close();
}
}
public static class DatabaseFileIO implements IFileIO {
private final SeekableByteChannel dataFileChannel;
private final Object dataAccessLock = new Object();
private long firstFreeIndex;
private DatabaseFileIO(Path dataFile) throws IOException {
synchronized (dataAccessLock) {
dataFileChannel = Files.newByteChannel(dataFile, StandardOpenOption.READ, StandardOpenOption.WRITE);
firstFreeIndex = dataFileChannel.size();
}
}
@Override
public ByteBuffer readAt(long index, int length) throws IOException {
ByteBuffer dataBuffer = ByteBuffer.allocate(length);
dataFileChannel.position(index).read(dataBuffer);
dataBuffer.flip();
return dataBuffer;
}
@Override
public void writeAt(long index, int length, ByteBuffer data) throws IOException {
synchronized (dataAccessLock) {
if (data.position() != 0) {
throw new IOException("You didn't flip the ByteBuffer!");
}
if (firstFreeIndex < index + length) {
firstFreeIndex = index + length;
}
dataFileChannel.position(index).write(data);
}
}
@Override
public long writeAtEnd(int length, ByteBuffer data) throws IOException {
synchronized (dataAccessLock) {
long index = firstFreeIndex;
firstFreeIndex += length;
writeAt(index, length, data);
return index;
}
}
@Override
public void close() throws IOException {
synchronized (dataAccessLock) {
dataFileChannel.close();
}
}
}
}

101
src/main/java/org/warp/cowdb/EnhancedObject.java Normal file
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@ -0,0 +1,101 @@
package org.warp.cowdb;
import org.apache.commons.lang3.reflect.MethodUtils;
import org.warp.jcwdb.ann.DBDataType;
import org.warp.jcwdb.ann.DBPropertyGetter;
import org.warp.jcwdb.ann.DBPropertySetter;
import java.io.IOError;
import java.io.IOException;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.Map;
public abstract class EnhancedObject {
protected IDatabase database;
private Field[] fields;
private DBDataType[] fieldTypes;
private long[] fieldReferences;
private Method[] propertyGetters;
private Method[] propertySetters;
private DBDataType[] propertyTypes;
private long[] propertyReferences;
private boolean[] loadedProperties;
private Object[] loadedPropertyValues;
private Map<String, DBPropertySetter> setterMethods;
private Map<String, DBPropertyGetter> getterMethods;
public EnhancedObject() {
}
public EnhancedObject(IDatabase database) throws IOException {
this.database = database;
database.getDataInitializer().initializeDBObject(this);
}
public abstract void initialize() throws IOException;
public void setFields(Field[] fields, DBDataType[] fieldTypes, long[] fieldReferences) {
this.fields = fields;
this.fieldTypes = fieldTypes;
this.fieldReferences = fieldReferences;
}
public Method[] getPropertyGetters() {
return MethodUtils.getMethodsWithAnnotation(this.getClass(), DBPropertyGetter.class);
}
public Method[] getPropertySetters() {
return MethodUtils.getMethodsWithAnnotation(this.getClass(), DBPropertySetter.class);
}
public void setProperties(Method[] propertyGetters, Method[] propertySetters, DBDataType[] propertyTypes, long[] propertyReferences, Map<String, DBPropertySetter> setterMethods, Map<String, DBPropertyGetter> getterMethods) {
this.propertyGetters = propertyGetters;
this.propertySetters = propertySetters;
this.propertyTypes = propertyTypes;
this.propertyReferences = propertyReferences;
this.loadedProperties = new boolean[this.propertyReferences.length];
this.loadedPropertyValues = new Object[this.propertyReferences.length];
this.setterMethods = setterMethods;
this.getterMethods = getterMethods;
}
public EnhancedObjectFullInfo getAllInfo() {
return new EnhancedObjectFullInfo(fieldReferences, fieldTypes, fields, propertyReferences, propertyTypes, loadedPropertyValues);
}
public <T> T getProperty() {
StackWalker walker = StackWalker.getInstance(StackWalker.Option.RETAIN_CLASS_REFERENCE);
StackWalker.StackFrame stackFrame = walker.walk(f -> f.skip(1).findFirst().orElse(null));
try {
int propertyId = stackFrame.getDeclaringClass().getDeclaredMethod(stackFrame.getMethodName()).getAnnotation(DBPropertyGetter.class).id();
return getProperty(propertyId);
} catch (IOException | NoSuchMethodException e) {
throw new RuntimeException(e);
}
}
@SuppressWarnings("unchecked")
private <T> T getProperty(int propertyId) throws IOException {
if (!loadedProperties[propertyId]) {
long propertyUID = propertyReferences[propertyId];
database.getObjectsIO().loadProperty(this, propertyId, propertyGetters[propertyId], propertyTypes[propertyId], propertyUID);
}
return (T) loadedPropertyValues[propertyId];
}
public <T> void setProperty(T value) {
StackWalker walker = StackWalker.getInstance(StackWalker.Option.RETAIN_CLASS_REFERENCE);
StackWalker.StackFrame stackFrame = walker.walk(f -> f.skip(1).findFirst().orElse(null));
DBPropertySetter propertyAnnotation = setterMethods.get(stackFrame.getMethodName());
setProperty(propertyAnnotation.id(), value);
}
public <T> void setProperty(int propertyId, T value) {
loadedPropertyValues[propertyId] = value;
loadedProperties[propertyId] = true;
}
}

47
src/main/java/org/warp/cowdb/EnhancedObjectFullInfo.java Normal file
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@ -0,0 +1,47 @@
package org.warp.cowdb;
import org.warp.jcwdb.ann.DBDataType;
import java.lang.reflect.Field;
public class EnhancedObjectFullInfo {
private final long[] fieldReferences;
private final DBDataType[] fieldTypes;
private final Field[] fields;
private final long[] propertyReferences;
private final DBDataType[] propertyTypes;
private final Object[] loadedPropertyValues;
public EnhancedObjectFullInfo(long[] fieldReferences, DBDataType[] fieldTypes, Field[] fields, long[] propertyReferences, DBDataType[] propertyTypes, Object[] loadedPropertyValues) {
this.fieldReferences = fieldReferences;
this.fieldTypes = fieldTypes;
this.fields = fields;
this.propertyReferences = propertyReferences;
this.propertyTypes = propertyTypes;
this.loadedPropertyValues = loadedPropertyValues;
}
public long[] getFieldReferences() {
return fieldReferences;
}
public DBDataType[] getFieldTypes() {
return fieldTypes;
}
public Field[] getFields() {
return fields;
}
public long[] getPropertyReferences() {
return propertyReferences;
}
public DBDataType[] getPropertyTypes() {
return propertyTypes;
}
public Object[] getLoadedPropertyValues() {
return loadedPropertyValues;
}
}

28
src/main/java/org/warp/cowdb/IBlocksIO.java Normal file
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@ -0,0 +1,28 @@
package org.warp.cowdb;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.nio.ByteBuffer;
public interface IBlocksIO {
/**
* Allocate a block
* @param size block size
* @param data block data
* @return the block id
*/
long newBlock(int size, ByteBuffer data) throws IOException;
/**
* Read a block
* @param blockId block id
* @return block data
*/
ByteBuffer readBlock(long blockId) throws IOException;
/**
* Close file
*/
void close();
}

44
src/main/java/org/warp/cowdb/IBlocksMetadata.java Normal file
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@ -0,0 +1,44 @@
package org.warp.cowdb;
import java.io.IOException;
public interface IBlocksMetadata {
long EMPTY_BLOCK_ID = -1;
BlockInfo EMPTY_BLOCK_INFO = new BlockInfo(0, 0);
/**
* Get block info
* @param blockId block id
* @return block metadata
*/
BlockInfo getBlockInfo(long blockId) throws IOException;
/**
* New empty block info
* @return block id
*/
default long newBlock() {
return EMPTY_BLOCK_ID;
}
/**
* Set block info
* @param index block index
* @param size block size
* @return block id
*/
long newBlock(long index, int size) throws IOException;
/**
* Set block info
* @param blockInfo block info
* @return block id
*/
default long newBlock(BlockInfo blockInfo) throws IOException {
return this.newBlock(blockInfo.getIndex(), blockInfo.getSize());
}
/**
* Close file
*/
void close() throws IOException;
}

7
src/main/java/org/warp/cowdb/IDataInitializer.java Normal file
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@ -0,0 +1,7 @@
package org.warp.cowdb;
import java.io.IOException;
public interface IDataInitializer {
void initializeDBObject(EnhancedObject obj) throws IOException;
}

10
src/main/java/org/warp/cowdb/IDatabase.java Normal file
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@ -0,0 +1,10 @@
package org.warp.cowdb;
import java.io.IOException;
public interface IDatabase {
void close() throws IOException;
IDataInitializer getDataInitializer();
IObjectsIO getObjectsIO();
}

35
src/main/java/org/warp/cowdb/IFileIO.java Normal file
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@ -0,0 +1,35 @@
package org.warp.cowdb;
import java.io.*;
import java.nio.ByteBuffer;
public interface IFileIO {
/**
* Read *length* bytes in position *index*
* @param index index
* @param length length
* @return bytes
*/
ByteBuffer readAt(long index, int length) throws IOException;
/**
* Write *length* bytes in position *index*
* @param index index
* @param length length
* @param data bytes
*/
void writeAt(long index, int length, ByteBuffer data) throws IOException;
/**
* Write *length* bytes in position *index*
* @param length length
* @param data bytes
* @return index
*/
long writeAtEnd(int length, ByteBuffer data) throws IOException;
/**
* Close the file
*/
void close() throws IOException;
}

109
src/main/java/org/warp/cowdb/IObjectsIO.java Normal file
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@ -0,0 +1,109 @@
package org.warp.cowdb;
import it.unimi.dsi.fastutil.longs.LongArrayList;
import org.warp.jcwdb.ann.DBDataType;
import java.io.IOException;
import java.lang.reflect.Method;
interface IObjectsIO {
<T extends EnhancedObject> T loadEnhancedObject(long reference, Class<T> objectType) throws IOException;
<T> T loadObject(long reference) throws IOException;
LongArrayList loadReferencesList(long reference) throws IOException;
boolean loadBoolean(long reference) throws IOException;
byte loadByte(long reference) throws IOException;
short loadShort(long reference) throws IOException;
char loadChar(long reference) throws IOException;
int loadInt(long reference) throws IOException;
long loadLong(long reference) throws IOException;
<T extends EnhancedObject> void setEnhancedObject(long reference, T value) throws IOException;
<T> void setObject(long reference, T value) throws IOException;
void setReferencesList(long reference, LongArrayList value) throws IOException;
void setBoolean(long reference, boolean value) throws IOException;
void setByte(long reference, byte value) throws IOException;
void setShort(long reference, short value) throws IOException;
void setChar(long reference, char value) throws IOException;
void setInt(long reference, int value) throws IOException;
void setLong(long reference, long value) throws IOException;
long newNullObject() throws IOException;
default <T extends EnhancedObject> long newEnhancedObject(T value) throws IOException {
long reference = newNullObject();
if (value != null) {
setEnhancedObject(reference, value);
}
return reference;
}
default <T> long newObject(T value) throws IOException {
long reference = newNullObject();
if (value != null) {
setObject(reference, value);
}
return reference;
}
default long newReferencesList(LongArrayList value) throws IOException {
long reference = newNullObject();
if (value != null) {
setReferencesList(reference, value);
}
return reference;
}
default long newBoolean(boolean value) throws IOException {
long reference = newNullObject();
setBoolean(reference, value);
return reference;
}
default long newByte(byte value) throws IOException {
long reference = newNullObject();
setByte(reference, value);
return reference;
}
default long newShort(short value) throws IOException {
long reference = newNullObject();
setShort(reference, value);
return reference;
}
default long newChar(char value) throws IOException {
long reference = newNullObject();
setChar(reference, value);
return reference;
}
default long newInt(int value) throws IOException {
long reference = newNullObject();
setInt(reference, value);
return reference;
}
default long newLong(long value) throws IOException {
long reference = newNullObject();
setLong(reference, value);
return reference;
}
void loadProperty(EnhancedObject enhancedObject, int propertyId, Method propertyGetter, DBDataType propertyType, long propertyUID) throws IOException;
}

37
src/main/java/org/warp/cowdb/IReferencesIO.java Normal file
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@ -0,0 +1,37 @@
package org.warp.cowdb;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.nio.ByteBuffer;
public interface IReferencesIO {
/**
* Allocate a new empty reference
* @return the new reference
*/
long allocateReference() throws IOException;
/**
* Allocate a new reference with that data
* @param size data size
* @param data bytes
* @return the new reference
*/
long allocateReference(int size, ByteBuffer data) throws IOException;
/**
* Write some data to the reference
* @param reference reference
* @param size data size
* @param data bytes
*/
void writeToReference(long reference, int size, ByteBuffer data) throws IOException;
/**
* Read data from the reference
* @param reference reference
* @return bytes
*/
ByteBuffer readFromReference(long reference) throws IOException;
}

31
src/main/java/org/warp/cowdb/IReferencesMetadata.java Normal file
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@ -0,0 +1,31 @@
package org.warp.cowdb;
import java.io.IOException;
public interface IReferencesMetadata {
/**
* Get block of reference
* @param reference reference
* @return block id
*/
long getReference(long reference) throws IOException;
/**
* Allocate a block for a new reference
* @param blockId block id
* @return reference
*/
long newReference(long blockId) throws IOException;
/**
* Change reference size
* @param reference reference
* @param blockId block id
*/
void editReference(long reference, long blockId) throws IOException;
/**
* Close file
*/
void close() throws IOException;
}

6
src/main/java/org/warp/jcwdb/Cleaner.java
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@ -1,11 +1,5 @@
package org.warp.jcwdb;
import java.io.IOException;
import java.lang.ref.WeakReference;
import java.nio.channels.ClosedChannelException;
import it.unimi.dsi.fastutil.longs.Long2ObjectMap.Entry;
public class Cleaner {
public static final boolean DISABLE_CLEANER = false;

5
src/main/java/org/warp/jcwdb/FileAllocator.java
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@ -1,11 +1,10 @@
package org.warp.jcwdb;
import it.unimi.dsi.fastutil.longs.*;
import it.unimi.dsi.fastutil.objects.ObjectBidirectionalIterator;
import it.unimi.dsi.fastutil.longs.Long2IntLinkedOpenHashMap;
import it.unimi.dsi.fastutil.longs.Long2IntMap;
import java.io.IOException;
import java.nio.channels.SeekableByteChannel;
import java.util.Collection;
import java.util.Collections;
import java.util.Map;
import java.util.Optional;

9
src/main/java/org/warp/jcwdb/FileIndexManager.java
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@ -7,6 +7,7 @@ import it.unimi.dsi.fastutil.objects.ObjectIterator;
import org.warp.jcwdb.ann.DatabaseManager;
import java.io.IOException;
import java.io.OutputStream;
import java.nio.ByteBuffer;
import java.nio.channels.Channels;
import java.nio.channels.SeekableByteChannel;
@ -15,7 +16,7 @@ import java.nio.file.Path;
import java.nio.file.StandardOpenOption;
public class FileIndexManager implements IndexManager {
public static final boolean ALWAYS_ALLOCATE_NEW = false;
public static final boolean ALWAYS_ALLOCATE_NEW = true;
private final SeekableByteChannel dataFileChannel, metadataFileChannel;
private volatile long metadataFileChannelSize;
private final FileAllocator fileAllocator;
@ -114,7 +115,7 @@ public class FileIndexManager implements IndexManager {
public <T> T get(long index, DBReader<T> reader) throws IOException {
checkClosed();
IndexDetails details = getIndexMetadata(index);
Input i = new Input(Channels.newInputStream(dataFileChannel.position(details.getOffset())));
Input i = new Input(Channels.newInputStream(dataFileChannel.position(details.getOffset())), details.getSize());
T result = reader.read(i, details.getSize());
return result;
}
@ -184,8 +185,10 @@ public class FileIndexManager implements IndexManager {
throw new IOException("Unable to write " + size + " in a space of " + indexDetails.getSize());
}
final long offset = indexDetails.getOffset();
final Output o = new Output(Channels.newOutputStream(dataFileChannel.position(offset)), size);
OutputStream os = Channels.newOutputStream(dataFileChannel.position(offset));
final Output o = new Output(os, size);
data.write(o);
os.flush();
o.flush();
}

2
src/main/java/org/warp/jcwdb/IndexDetails.java
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@ -1,7 +1,5 @@
package org.warp.jcwdb;
import java.util.Objects;
public class IndexDetails {
/**
* The bitmask is used to determine if an index has been deleted

5
src/main/java/org/warp/jcwdb/IndexManager.java
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@ -1,11 +1,6 @@
package org.warp.jcwdb;
import com.esotericsoftware.kryo.io.Output;
import java.io.IOException;
import java.util.function.BiConsumer;
import java.util.function.BiPredicate;
import java.util.function.Consumer;
public interface IndexManager extends Cleanable {
<T> T get(long index, DBReader<T> reader) throws IOException;

2
src/main/java/org/warp/jcwdb/Saveable.java
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@ -1,7 +1,5 @@
package org.warp.jcwdb;
import java.io.IOException;
public interface Saveable {
void save();
void saveAndFlush();

15
src/main/java/org/warp/jcwdb/ann/ConsumerWithIO.java Normal file
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@ -0,0 +1,15 @@
package org.warp.jcwdb.ann;
import java.io.IOException;
import java.util.Objects;
@FunctionalInterface
public interface ConsumerWithIO<T> {
void accept(T t) throws IOException;
default ConsumerWithIO<T> andThen(ConsumerWithIO<? super T> after) {
Objects.requireNonNull(after);
return (T t) -> { accept(t); after.accept(t); };
}
}

20
src/main/java/org/warp/jcwdb/ann/DBArrayList.java
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@ -13,13 +13,17 @@ public abstract class DBArrayList<T> extends DBObject {
@DBField(id = 0, type = DBDataType.UID_LIST)
private LongArrayList indices;
public DBArrayList(JCWDatabase database) {
super(database);
indices = new LongArrayList();
public DBArrayList() {
super();
}
public DBArrayList(JCWDatabase database, DBObjectIndicesManager.DBObjectInfo objectInfo) throws IOException {
super(database, objectInfo);
public DBArrayList(JCWDatabase database) throws IOException {
super(database);
}
@Override
public void initialize() {
indices = new LongArrayList();
}
public T get(int index) {
@ -34,7 +38,7 @@ public abstract class DBArrayList<T> extends DBObject {
}
public void add(T value) {
long uid = databaseManager.allocateNullValue();
long uid = database.getDataLoader().allocateNullValue();
synchronized (indicesAccessLock) {
indices.add(uid);
try {
@ -52,7 +56,7 @@ public abstract class DBArrayList<T> extends DBObject {
}
public void set(int index, T value) {
long uid = databaseManager.allocateNullValue();
long uid = database.getDataLoader().allocateNullValue();
synchronized (indicesAccessLock) {
indices.set(index, uid);
try {
@ -64,7 +68,7 @@ public abstract class DBArrayList<T> extends DBObject {
}
public void add(int index, T value) {
long uid = databaseManager.allocateNullValue();
long uid = database.getDataLoader().allocateNullValue();
synchronized (indicesAccessLock) {
indices.add(index, uid);
try {

14
src/main/java/org/warp/jcwdb/ann/DBDBObjectList.java
View File

@ -7,22 +7,22 @@ public class DBDBObjectList<T extends DBObject> extends DBArrayList<T> {
@DBField(id = 1, type = DBDataType.OBJECT)
private Class<T> type;
public DBDBObjectList(JCWDatabase database, Class<T> type) {
public DBDBObjectList() {
super();
}
public DBDBObjectList(JCWDatabase database, Class<T> type) throws IOException {
super(database);
this.type = type;
}
public DBDBObjectList(JCWDatabase database, DBObjectIndicesManager.DBObjectInfo objectInfo) throws IOException {
super(database, objectInfo);
}
@Override
protected T loadItem(long uid) throws IOException {
return databaseManager.loadDBObject(type, uid);
return database.getDataLoader().loadDBObject(type, uid);
}
@Override
protected void writeItemToDisk(long uid, T item) throws IOException {
databaseManager.writeObjectProperty(uid, DBDataType.DATABASE_OBJECT, item);
database.getDataLoader().writeObjectProperty(uid, DBDataType.DATABASE_OBJECT, item);
}
}

3
src/main/java/org/warp/jcwdb/ann/DBDataType.java
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@ -9,5 +9,6 @@ public enum DBDataType {
CHAR,
INTEGER,
LONG,
UID_LIST
UID_LIST,
REFERENCES_LIST
}

119
src/main/java/org/warp/jcwdb/ann/DBObject.java
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@ -1,6 +1,6 @@
package org.warp.jcwdb.ann;
import org.apache.commons.lang3.reflect.FieldUtils;
import org.apache.commons.lang3.reflect.MethodUtils;
import java.io.IOError;
import java.io.IOException;
@ -10,8 +10,7 @@ import java.util.LinkedHashMap;
import java.util.Map;
public abstract class DBObject {
protected final JCWDatabase database;
protected final DatabaseManager databaseManager;
protected JCWDatabase database;
private Field[] fields;
private DBDataType[] fieldTypes;
private long[] fieldUIDs;
@ -27,101 +26,17 @@ public abstract class DBObject {
private final Object fieldsAccessLock = new Object();
private final Object propertiesAccessLock = new Object();
public DBObject(JCWDatabase database) {
public DBObject() {
}
public DBObject(JCWDatabase database) throws IOException {
this.database = database;
this.databaseManager = database.getDatabaseManager();
try {
initializeDBObject();
} catch (IOException e) {
throw new RuntimeException(e);
}
database.initializeDBObject(this);
}
public DBObject(JCWDatabase database, DBObjectIndicesManager.DBObjectInfo objectInfo) throws IOException {
this.database = database;
this.databaseManager = database.getDatabaseManager();
this.databaseManager.preloadDBObject(this, objectInfo);
}
public abstract void initialize() throws IOException;
private void initializeDBObject() throws IOException {
initializeDBObjectFields();
initializeDBObjectProperties();
}
private void initializeDBObjectFields() throws IOException {
// Declare the variables needed to get the biggest field Id
Field[] unorderedFields = databaseManager.getFields(this);
// Find the biggest field Id
int biggestFieldId = databaseManager.getBiggestFieldId(unorderedFields);
// Allocate new UIDs
fieldUIDs = databaseManager.allocateNewUIDs(biggestFieldId + 1);
// Declare the other variables
Field[] fields = new Field[biggestFieldId + 1];
DBDataType[] orderedFieldTypes = new DBDataType[biggestFieldId + 1];
// Load all fields metadata and load them
for (Field field : unorderedFields) {
DBField fieldAnnotation = field.getAnnotation(DBField.class);
int fieldId = fieldAnnotation.id();
DBDataType fieldType = fieldAnnotation.type();
databaseManager.loadField(this, field, fieldType, fieldUIDs[fieldId]);
fields[fieldId] = field;
orderedFieldTypes[fieldId] = fieldType;
}
// Set fields metadata
setFields(fields, orderedFieldTypes, fieldUIDs);
}
private void initializeDBObjectProperties() {
// Declare the variables needed to get the biggest property Id
Method[] unorderedPropertyGetters = databaseManager.getPropertyGetters(this);
Method[] unorderedPropertySetters = databaseManager.getPropertySetters(this);
// Find the biggest property Id
int biggestGetter = databaseManager.getBiggestPropertyGetterId(unorderedPropertyGetters);
int biggestSetter = databaseManager.getBiggestPropertySetterId(unorderedPropertySetters);
int biggestPropertyId = biggestGetter > biggestSetter ? biggestGetter : biggestSetter;
// Allocate new UIDs
propertyUIDs = databaseManager.allocateNewUIDs(biggestPropertyId + 1);
for (Method property : unorderedPropertySetters) {
DBPropertySetter fieldAnnotation = property.getAnnotation(DBPropertySetter.class);
int propertyId = fieldAnnotation.id();
if (propertyId > biggestPropertyId) {
biggestPropertyId = propertyId;
}
}
// Declare the other variables
DBDataType[] propertyTypes = new DBDataType[biggestPropertyId + 1];
Method[] propertyGetters = new Method[biggestPropertyId + 1];
Method[] propertySetters = new Method[biggestPropertyId + 1];
Map<String, DBPropertySetter> setterMethods = new LinkedHashMap<>();
Map<String, DBPropertyGetter> getterMethods = new LinkedHashMap<>();
// Load the properties metadata
for (Method property : unorderedPropertyGetters) {
DBPropertyGetter propertyAnnotation = property.getAnnotation(DBPropertyGetter.class);
int propertyId = propertyAnnotation.id();
DBDataType propertyType = propertyAnnotation.type();
propertyTypes[propertyId] = propertyType;
propertyGetters[propertyId] = property;
getterMethods.put(property.getName(), propertyAnnotation);
}
for (Method property : unorderedPropertySetters) {
DBPropertySetter propertyAnnotation = property.getAnnotation(DBPropertySetter.class);
int propertyId = propertyAnnotation.id();
DBDataType propertyType = propertyAnnotation.type();
propertyTypes[propertyId] = propertyType;
propertySetters[propertyId] = property;
setterMethods.put(property.getName(), propertyAnnotation);
}
// Set properties metadata
setProperties(propertyGetters, propertySetters, propertyTypes, propertyUIDs, setterMethods, getterMethods);
}
public <T> T getProperty() {
StackWalker walker = StackWalker.getInstance(StackWalker.Option.RETAIN_CLASS_REFERENCE);
@ -144,7 +59,7 @@ public abstract class DBObject {
synchronized (propertiesAccessLock) {
if (!loadedProperties[propertyId]) {
long propertyUID = propertyUIDs[propertyId];
databaseManager.loadProperty(this, propertyId, propertyGetters[propertyId], propertyTypes[propertyId], propertyUID);
database.getDataLoader().loadProperty(this, propertyId, propertyGetters[propertyId], propertyTypes[propertyId], propertyUID);
}
return (T) loadedPropertyValues[propertyId];
}
@ -169,13 +84,13 @@ public abstract class DBObject {
try {
synchronized (propertiesAccessLock) {
synchronized (fieldsAccessLock) {
databaseManager.writeObjectInfo(uid, fieldUIDs, propertyUIDs);
database.getDataLoader().writeObjectInfo(uid, fieldUIDs, propertyUIDs);
}
}
synchronized (fieldsAccessLock) {
for (int i = 0; i < fieldUIDs.length; i++) {
try {
databaseManager.writeObjectProperty(fieldUIDs[i], fieldTypes[i], fields[i].get(this));
database.getDataLoader().writeObjectProperty(fieldUIDs[i], fieldTypes[i], fields[i].get(this));
} catch (IllegalAccessException e) {
throw new IOError(e);
}
@ -183,7 +98,7 @@ public abstract class DBObject {
}
synchronized (propertiesAccessLock) {
for (int i = 0; i < propertyUIDs.length; i++) {
databaseManager.writeObjectProperty(propertyUIDs[i], propertyTypes[i], loadedPropertyValues[i]);
database.getDataLoader().writeObjectProperty(propertyUIDs[i], propertyTypes[i], loadedPropertyValues[i]);
}
}
} catch (IOException e) {
@ -211,4 +126,12 @@ public abstract class DBObject {
this.getterMethods = getterMethods;
}
}
Method[] getPropertyGetters() {
return MethodUtils.getMethodsWithAnnotation(this.getClass(), DBPropertyGetter.class);
}
public Method[] getPropertySetters() {
return MethodUtils.getMethodsWithAnnotation(this.getClass(), DBPropertySetter.class);
}
}

13
src/main/java/org/warp/jcwdb/ann/DBObjectList.java
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@ -3,21 +3,22 @@ package org.warp.jcwdb.ann;
import java.io.IOException;
public class DBObjectList<T> extends DBArrayList<T> {
public DBObjectList(JCWDatabase database) {
super(database);
public DBObjectList() {
}
public DBObjectList(JCWDatabase database, DBObjectIndicesManager.DBObjectInfo objectInfo) throws IOException {
super(database, objectInfo);
public DBObjectList(JCWDatabase database) throws IOException {
super(database);
}
@Override
public T loadItem(long uid) throws IOException {
return databaseManager.loadObject(uid);
return database.getDataLoader().loadObject(uid);
}
@Override
public void writeItemToDisk(long uid, T item) throws IOException {
databaseManager.writeObjectProperty(uid, DBDataType.OBJECT, item);
database.getDataLoader().writeObjectProperty(uid, DBDataType.OBJECT, item);
}
}

96
src/main/java/org/warp/jcwdb/ann/DataInitializer.java Normal file
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@ -0,0 +1,96 @@
package org.warp.jcwdb.ann;
import java.io.IOException;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.LinkedHashMap;
import java.util.Map;
public class DataInitializer {
private final DataLoader dataLoader;
public DataInitializer(DataLoader dataLoader) {
this.dataLoader = dataLoader;
}
public void initializeDBObject(DBObject obj) throws IOException {
initializeDBObjectFields(obj);
initializeDBObjectProperties(obj);
obj.initialize();
}
private void initializeDBObjectFields(DBObject obj) throws IOException {
// Declare the variables needed to get the biggest field Id
Field[] unorderedFields = dataLoader.getFields(obj);
// Find the biggest field Id
int biggestFieldId = dataLoader.getBiggestFieldId(unorderedFields);
// Allocate new UIDs
long[] fieldUIDs = dataLoader.allocateNewUIDs(biggestFieldId + 1);
// Declare the other variables
Field[] fields = new Field[biggestFieldId + 1];
DBDataType[] orderedFieldTypes = new DBDataType[biggestFieldId + 1];
// Load all fields metadata and load them
for (Field field : unorderedFields) {
DBField fieldAnnotation = field.getAnnotation(DBField.class);
int fieldId = fieldAnnotation.id();
DBDataType fieldType = fieldAnnotation.type();
dataLoader.loadField(obj, field, fieldType, fieldUIDs[fieldId]);
fields[fieldId] = field;
orderedFieldTypes[fieldId] = fieldType;
}
// Set fields metadata
obj.setFields(fields, orderedFieldTypes, fieldUIDs);
}
private void initializeDBObjectProperties(DBObject obj) {
// Declare the variables needed to get the biggest property Id
Method[] unorderedPropertyGetters = obj.getPropertyGetters();
Method[] unorderedPropertySetters = obj.getPropertySetters();
// Find the biggest property Id
int biggestGetter = dataLoader.getBiggestPropertyGetterId(unorderedPropertyGetters);
int biggestSetter = dataLoader.getBiggestPropertySetterId(unorderedPropertySetters);
int biggestPropertyId = biggestGetter > biggestSetter ? biggestGetter : biggestSetter;
// Allocate new UIDs
long[] propertyUIDs = dataLoader.allocateNewUIDs(biggestPropertyId + 1);
for (Method property : unorderedPropertySetters) {
DBPropertySetter fieldAnnotation = property.getAnnotation(DBPropertySetter.class);
int propertyId = fieldAnnotation.id();
if (propertyId > biggestPropertyId) {
biggestPropertyId = propertyId;
}
}
// Declare the other variables
DBDataType[] propertyTypes = new DBDataType[biggestPropertyId + 1];
Method[] propertyGetters = new Method[biggestPropertyId + 1];
Method[] propertySetters = new Method[biggestPropertyId + 1];
Map<String, DBPropertySetter> setterMethods = new LinkedHashMap<>();
Map<String, DBPropertyGetter> getterMethods = new LinkedHashMap<>();
// Load the properties metadata
for (Method property : unorderedPropertyGetters) {
DBPropertyGetter propertyAnnotation = property.getAnnotation(DBPropertyGetter.class);
int propertyId = propertyAnnotation.id();
DBDataType propertyType = propertyAnnotation.type();
propertyTypes[propertyId] = propertyType;
propertyGetters[propertyId] = property;
getterMethods.put(property.getName(), propertyAnnotation);
}
for (Method property : unorderedPropertySetters) {
DBPropertySetter propertyAnnotation = property.getAnnotation(DBPropertySetter.class);
int propertyId = propertyAnnotation.id();
DBDataType propertyType = propertyAnnotation.type();
propertyTypes[propertyId] = propertyType;
propertySetters[propertyId] = property;
setterMethods.put(property.getName(), propertyAnnotation);
}
// Set properties metadata
obj.setProperties(propertyGetters, propertySetters, propertyTypes, propertyUIDs, setterMethods, getterMethods);
}
}

645
src/main/java/org/warp/jcwdb/ann/DataLoader.java Normal file
View File

@ -0,0 +1,645 @@
package org.warp.jcwdb.ann;
import com.esotericsoftware.kryo.Kryo;
import com.esotericsoftware.kryo.io.Output;
import it.unimi.dsi.fastutil.booleans.BooleanArrayList;
import it.unimi.dsi.fastutil.bytes.ByteArrayList;
import it.unimi.dsi.fastutil.chars.CharArrayList;
import it.unimi.dsi.fastutil.ints.IntArrayList;
import it.unimi.dsi.fastutil.longs.LongArrayList;
import it.unimi.dsi.fastutil.shorts.ShortArrayList;
import org.apache.commons.lang3.reflect.FieldUtils;
import org.apache.commons.lang3.reflect.MethodUtils;
import org.warp.jcwdb.FileIndexManager;
import java.io.ByteArrayOutputStream;
import java.io.IOError;
import java.io.IOException;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.nio.file.Path;
import java.util.*;
import java.util.function.Consumer;
import java.util.function.Supplier;
public class DataLoader {
private final Kryo kryo = new Kryo();
private final DBObjectIndicesManager objectIndicesManager;
private final FileIndexManager indices;
private final Object indicesAccessLock = new Object();
private volatile boolean closed;
/**
* DO NOT USE
*/
private JCWDatabase databaseInstance;
public DataLoader(JCWDatabase databaseInstance, Path dataFile, Path metadataFile, boolean registrationRequired) throws IOException {
synchronized (indicesAccessLock) {
this.databaseInstance = databaseInstance;
this.indices = new FileIndexManager(dataFile, metadataFile);
if (!indices.has(0)) {
allocateNullValue();
}
this.objectIndicesManager = new DBObjectIndicesManager(this.indices);
kryo.setRegistrationRequired(registrationRequired);
registerDefaultClasses();
}
}
private void registerDefaultClasses() {
int id = -90;
registerClass(boolean[].class, id++);
registerClass(byte[].class, id++);
registerClass(short[].class, id++);
registerClass(char[].class, id++);
registerClass(int[].class, id++);
registerClass(long[].class, id++);
registerClass(Boolean[].class, id++);
registerClass(Byte[].class, id++);
registerClass(Short[].class, id++);
registerClass(Character[].class, id++);
registerClass(Integer[].class, id++);
registerClass(Long[].class, id++);
registerClass(String.class, id++);
registerClass(String[].class, id++);
registerClass(Boolean.class, id++);
registerClass(Byte.class, id++);
registerClass(Short.class, id++);
registerClass(Character.class, id++);
registerClass(Integer.class, id++);
registerClass(Class.class, id++);
registerClass(Object.class, id++);
registerClass(Object[].class, id++);
registerClass(Long.class, id++);
registerClass(String.class, id++);
registerClass(String[].class, id++);
registerClass(boolean[][].class, id++);
registerClass(byte[][].class, id++);
registerClass(short[][].class, id++);
registerClass(char[][].class, id++);
registerClass(int[][].class, id++);
registerClass(long[][].class, id++);
registerClass(String[][].class, id++);
registerClass(List.class, id++);
registerClass(ArrayList.class, id++);
registerClass(LinkedList.class, id++);
registerClass(Set.class, id++);
registerClass(HashSet.class, id++);
registerClass(LinkedHashSet.class, id++);
registerClass(Map.class, id++);
registerClass(HashMap.class, id++);
registerClass(LinkedHashMap.class, id++);
registerClass(TreeMap.class, id++);
registerClass(BooleanArrayList.class, id++);
registerClass(ByteArrayList.class, id++);
registerClass(ShortArrayList.class, id++);
registerClass(CharArrayList.class, id++);
registerClass(IntArrayList.class, id++);
registerClass(LongArrayList.class, id++);
registerClass(TreeSet.class, id++);
registerClass(SortedSet.class, id++);
registerClass(SortedMap.class, id++);
}
public void close() throws IOException {
synchronized (indicesAccessLock) {
if (!closed) {
closed = true;
indices.close();
}
}
}
public void preloadDBObject(DBObject obj, DBObjectIndicesManager.DBObjectInfo objectInfo) throws IOException {
synchronized (indicesAccessLock) {
preloadDBObjectFields(obj, objectInfo.getFields());
preloadDBObjectProperties(obj, objectInfo.getProperties());
}
}
<T extends DBObject> T loadRoot(Class<T> rootType, SupplierWithIO<T> ifAbsent) throws IOException {
synchronized (indicesAccessLock) {
if (isDBObjectNull(0)) {
return ifAbsent.getWithIO();
} else {
return loadDBObject(rootType, 0);
}
}
}
private <T extends DBObject> T instantiateDBObject(Class<T> type) throws IOException {
synchronized (indicesAccessLock) {
try {
T obj = type.getConstructor().newInstance();
obj.database = databaseInstance;
return obj;
} catch (NoSuchMethodException e) {
throw new IOException("You must declare a public empty constructor in class " + type + ": public " + type.getSimpleName() + "()", e);
} catch (IllegalAccessException | InvocationTargetException | InstantiationException e) {
throw new IOException(e);
}
}
}
private void preloadDBObjectFields(DBObject obj, long[] fieldUIDs) throws IOException {
synchronized (indicesAccessLock) {
// Declare the variables needed to get the biggest field Id
Field[] unorderedFields = getFields(obj);
// Find the biggest field Id
int biggestFieldId = getBiggestFieldId(unorderedFields);
// Declare the other variables
Field[] fields = new Field[biggestFieldId + 1];
DBDataType[] orderedFieldTypes = new DBDataType[biggestFieldId + 1];
// Load all fields metadata and load them
for (Field field : unorderedFields) {
DBField fieldAnnotation = field.getAnnotation(DBField.class);
int fieldId = fieldAnnotation.id();
DBDataType fieldType = fieldAnnotation.type();
loadField(obj, field, fieldType, fieldUIDs[fieldId]);
fields[fieldId] = field;
orderedFieldTypes[fieldId] = fieldType;
}
// Set fields metadata
obj.setFields(fields, orderedFieldTypes, fieldUIDs);
}
}
private void preloadDBObjectProperties(DBObject obj, long[] propertyUIDs) {
synchronized (indicesAccessLock) {
// Declare the variables needed to get the biggest property Id
Method[] unorderedPropertyGetters = obj.getPropertyGetters();
Method[] unorderedPropertySetters = obj.getPropertySetters();
// Find the biggest property Id
int biggestGetter = getBiggestPropertyGetterId(unorderedPropertyGetters);
int biggestSetter = getBiggestPropertySetterId(unorderedPropertySetters);
int biggestPropertyId = biggestGetter > biggestSetter ? biggestGetter : biggestSetter;
for (Method property : unorderedPropertySetters) {
DBPropertySetter fieldAnnotation = property.getAnnotation(DBPropertySetter.class);
int propertyId = fieldAnnotation.id();
if (propertyId > biggestPropertyId) {
biggestPropertyId = propertyId;
}
}
// Declare the other variables
DBDataType[] propertyTypes = new DBDataType[biggestPropertyId + 1];
Method[] propertyGetters = new Method[biggestPropertyId + 1];
Method[] propertySetters = new Method[biggestPropertyId + 1];
Map<String, DBPropertySetter> setterMethods = new LinkedHashMap<>();
Map<String, DBPropertyGetter> getterMethods = new LinkedHashMap<>();
// Load the properties metadata
for (Method property : unorderedPropertyGetters) {
DBPropertyGetter propertyAnnotation = property.getAnnotation(DBPropertyGetter.class);
int propertyId = propertyAnnotation.id();
DBDataType propertyType = propertyAnnotation.type();
propertyTypes[propertyId] = propertyType;
propertyGetters[propertyId] = property;
getterMethods.put(property.getName(), propertyAnnotation);
}
for (Method property : unorderedPropertySetters) {
DBPropertySetter propertyAnnotation = property.getAnnotation(DBPropertySetter.class);
int propertyId = propertyAnnotation.id();
DBDataType propertyType = propertyAnnotation.type();
propertyTypes[propertyId] = propertyType;
propertySetters[propertyId] = property;
setterMethods.put(property.getName(), propertyAnnotation);
}
// Set properties metadata
obj.setProperties(propertyGetters, propertySetters, propertyTypes, propertyUIDs, setterMethods, getterMethods);
}
}
protected Field[] getFields(DBObject obj) {
synchronized (indicesAccessLock) {
return FieldUtils.getFieldsWithAnnotation(obj.getClass(), DBField.class);
}
}
int getBiggestPropertyGetterId(Method[] unorderedPropertyGetters) {
synchronized (indicesAccessLock) {
int biggestPropertyId = -1;
for (Method property : unorderedPropertyGetters) {
DBPropertyGetter fieldAnnotation = property.getAnnotation(DBPropertyGetter.class);
int propertyId = fieldAnnotation.id();
if (propertyId > biggestPropertyId) {
biggestPropertyId = propertyId;
}
}
return biggestPropertyId;
}
}
int getBiggestPropertySetterId(Method[] unorderedPropertySetters) {
synchronized (indicesAccessLock) {
int biggestPropertyId = -1;
for (Method property : unorderedPropertySetters) {
DBPropertySetter fieldAnnotation = property.getAnnotation(DBPropertySetter.class);
int propertyId = fieldAnnotation.id();
if (propertyId > biggestPropertyId) {
biggestPropertyId = propertyId;
}
}
return biggestPropertyId;
}
}
protected int getBiggestFieldId(Field[] unorderedFields) {
synchronized (indicesAccessLock) {
int biggestFieldId = -1;
for (Field field : unorderedFields) {
DBField fieldAnnotation = field.getAnnotation(DBField.class);
int propertyId = fieldAnnotation.id();
if (propertyId > biggestFieldId) {
biggestFieldId = propertyId;
}
}
return biggestFieldId;
}
}
public void loadProperty(DBObject obj, int propertyId, Method property, DBDataType propertyType, long propertyUID) throws IOException {
synchronized (indicesAccessLock) {
loadData(propertyType, propertyUID, property::getReturnType, (data) -> {
synchronized (indicesAccessLock) {
obj.setLoadedProperty(propertyId, data);
}
});
}
}
public void loadField(DBObject obj, Field field, DBDataType fieldType, long fieldUID) throws IOException {
synchronized (indicesAccessLock) {
loadData(fieldType, fieldUID, field::getType, (data) -> {
synchronized (indicesAccessLock) {
try {
if (fieldType == DBDataType.OBJECT && data != null) {
if (!field.getType().isInstance(data)) {
throw new IOException("There is an attempt to load an object of type " + data.getClass() + " into a field of type " + field.getType());
}
}
FieldUtils.writeField(field, obj, data, true);
} catch (IllegalAccessException e) {
throw new RuntimeException(e);
}
}
});
}
}
@SuppressWarnings("unchecked")
private void loadData(DBDataType propertyType, long dataUID, Supplier<Class<?>> returnType, ConsumerWithIO result) throws IOException {
synchronized (indicesAccessLock) {
switch (propertyType) {
case DATABASE_OBJECT:
DBObject fieldDBObjectValue = loadDBObject((Class<? extends DBObject>) returnType.get(), dataUID);
//System.err.println("Loading data DBObj " + dataUID + ":" + fieldDBObjectValue);
result.accept(fieldDBObjectValue);
return;
case OBJECT:
Object fieldObjectValue = loadObject(dataUID);
//System.err.println("Loading data Obj " + dataUID + ":" + fieldObjectValue);
result.accept(fieldObjectValue);
return;
case UID_LIST:
LongArrayList fieldListObjectValue = loadListObject(dataUID);
//System.err.println("Loading data LOb " + dataUID + ":" + fieldListObjectValue);
result.accept(fieldListObjectValue);
return;
case BOOLEAN:
boolean fieldBooleanValue = loadBoolean(dataUID);
//System.err.println("Loading data Boo " + dataUID + ":" + fieldBooleanValue);
result.accept(fieldBooleanValue);
return;
case BYTE:
byte fieldByteValue = loadByte(dataUID);
//System.err.println("Loading data Byt " + dataUID + ":" + fieldByteValue);
result.accept(fieldByteValue);
return;
case SHORT:
short fieldShortValue = loadShort(dataUID);
//System.err.println("Loading data Shr " + dataUID + ":" + fieldShortValue);
result.accept(fieldShortValue);
return;
case CHAR:
char fieldCharValue = loadChar(dataUID);
//System.err.println("Loading data Chr " + dataUID + ":" + fieldCharValue);
result.accept(fieldCharValue);
return;
case INTEGER:
int fieldIntValue = loadInt(dataUID);
//System.err.println("Loading data Int " + dataUID + ":" + fieldIntValue);
result.accept(fieldIntValue);
return;
case LONG:
long fieldLongValue = loadLong(dataUID);
//System.err.println("Loading data Lng " + dataUID + ":" + fieldLongValue);
result.accept(fieldLongValue);
return;
default:
throw new NullPointerException("Unknown data type");
}
}
}
public <T extends DBObject> T loadDBObject(Class<T> type, long propertyUID) throws IOException {
synchronized (indicesAccessLock) {
DBObjectIndicesManager.DBObjectInfo objectInfo = readUIDs(propertyUID);
if (objectInfo == null) return null;
T obj = instantiateDBObject(type);
preloadDBObject(obj, objectInfo);
return obj;
}
}
private boolean isDBObjectNull(long uid) {
synchronized (indicesAccessLock) {
try {
return !objectIndicesManager.has(uid) || objectIndicesManager.get(uid) == null;
} catch (IOException ex) {
throw new IOError(ex);
}
}
}
@SuppressWarnings("unchecked")
public <T> T loadObject(long uid) throws IOException {
synchronized (indicesAccessLock) {
return indices.get(uid, (i, size) -> {
synchronized (indicesAccessLock) {
if (size != 0) {
return (T) kryo.readClassAndObject(i);
} else {
return null;
}
}
});
}
}
private LongArrayList loadListObject(long uid) throws IOException {
synchronized (indicesAccessLock) {
return indices.get(uid, (i, size) -> {
synchronized (indicesAccessLock) {
if (size != 0) {
LongArrayList list = new LongArrayList();
int listSize = i.readVarInt(true);
for (int li = 0; li < listSize; li++) {
list.add(i.readVarLong(true));
}
return list;
} else {
return null;
}
}
});
}
}
public boolean loadBoolean(long uid) throws IOException {
synchronized (indicesAccessLock) {
return indices.get(uid, (i, size) -> {
synchronized (indicesAccessLock) {
if (size != 0) {
return i.readBoolean();
} else {
return false;
}
}
});
}
}
public byte loadByte(long uid) throws IOException {
synchronized (indicesAccessLock) {
return indices.get(uid, (i, size) -> {
synchronized (indicesAccessLock) {
if (size != 0) {
return i.readByte();
} else {
return (byte) 0;
}
}
});
}
}
public short loadShort(long uid) throws IOException {
synchronized (indicesAccessLock) {
return indices.get(uid, (i, size) -> {
synchronized (indicesAccessLock) {
if (size != 0) {
return i.readShort();
} else {
return (short) 0;
}
}
});
}
}
public char loadChar(long uid) throws IOException {
synchronized (indicesAccessLock) {
return indices.get(uid, (i, size) -> {
synchronized (indicesAccessLock) {
if (size != 0) {
return i.readChar();
} else {
return (char) 0;
}
}
});
}
}
public int loadInt(long uid) throws IOException {
synchronized (indicesAccessLock) {
return indices.get(uid, (i, size) -> {
if (size != 0) {
return i.readInt();
} else {
return 0;
}
});
}
}
public long loadLong(long uid) throws IOException {
synchronized (indicesAccessLock) {
return indices.get(uid, (i, size) -> {
synchronized (indicesAccessLock) {
if (size != 0) {
return i.readLong();
} else {
return 0L;
}
}
});
}
}
public boolean exists(long uid) {
synchronized (indicesAccessLock) {
return objectIndicesManager.has(uid);
}
}
public void writeObjectInfo(long uid, long[] fieldUIDs, long[] propertyUIDs) throws IOException {
synchronized (indicesAccessLock) {
//System.err.println("Saving obj. " + uid);
this.objectIndicesManager.set(uid, fieldUIDs, propertyUIDs);
}
}
private void writeObjectInfoNull(long uid) throws IOException {
synchronized (indicesAccessLock) {
this.objectIndicesManager.setNull(uid);
}
}
/**
*
* @param uid
* @return
*/
public DBObjectIndicesManager.DBObjectInfo readUIDs(long uid) {
synchronized (indicesAccessLock) {
try {
return objectIndicesManager.get(uid);
} catch (IOException e) {
throw new IOError(e);
}
}
}
public <T> void writeObjectProperty(long uid, DBDataType propertyType, T loadedPropertyValue) throws IOException {
synchronized (indicesAccessLock) {
switch (propertyType) {
case BOOLEAN:
indices.set(uid, 1, (o) -> {
synchronized (indicesAccessLock) {
o.writeBoolean(loadedPropertyValue == null ? false : (boolean) loadedPropertyValue);
}
});
//System.err.println("Saving data Boo " + uid + ":" + loadedPropertyValue);
break;
case BYTE:
indices.set(uid, Byte.BYTES, (o) -> {
synchronized (indicesAccessLock) {
o.writeByte(loadedPropertyValue == null ? 0 : (byte) loadedPropertyValue);
}
});
//System.err.println("Saving data Byt " + uid + ":" + loadedPropertyValue);
break;
case SHORT:
indices.set(uid, Short.BYTES, (o) -> {
synchronized (indicesAccessLock) {
o.writeShort(loadedPropertyValue == null ? 0 : (short) loadedPropertyValue);
}
});
//System.err.println("Saving data Shr " + uid + ":" + loadedPropertyValue);
break;
case CHAR:
indices.set(uid, Character.BYTES, (o) -> {
synchronized (indicesAccessLock) {
o.writeChar(loadedPropertyValue == null ? 0 : (char) loadedPropertyValue);
}
});
//System.err.println("Saving data Chr " + uid + ":" + loadedPropertyValue);
break;
case INTEGER:
indices.set(uid, Integer.BYTES, (o) -> {
synchronized (indicesAccessLock) {
o.writeInt(loadedPropertyValue == null ? 0 : (int) loadedPropertyValue);
}
});
//System.err.println("Saving data Int " + uid + ":" + loadedPropertyValue);
break;
case LONG:
indices.set(uid, Long.BYTES, (o) -> {
synchronized (indicesAccessLock) {
o.writeLong(loadedPropertyValue == null ? 0 : (long) loadedPropertyValue);
}
});
//System.err.println("Saving data Lng " + uid + ":" + loadedPropertyValue);
break;
case OBJECT:
Output baosOutput = new Output(new ByteArrayOutputStream());
kryo.writeClassAndObject(baosOutput, loadedPropertyValue);
//System.err.println("Saving data Obj " + uid + ":" + loadedPropertyValue);
if (loadedPropertyValue instanceof Class) {
System.out.println();
}
byte[] out = baosOutput.toBytes();
indices.set(uid, out.length, o -> {
synchronized (indicesAccessLock) {
o.write(out, 0, out.length);
}
});
break;
case UID_LIST:
if (loadedPropertyValue == null) {
indices.set(uid, 0, (o) -> {
});
} else {
LongArrayList list = (LongArrayList) loadedPropertyValue;
final int listSize = list.size();
Output baosListOutput = new Output(Long.BYTES * 100, Long.BYTES * (listSize > 100 ? listSize : 100));
baosListOutput.writeVarInt(listSize, true);
for (int i = 0; i < listSize; i++) {
baosListOutput.writeVarLong(list.getLong(i), true);
}
//System.err.println("Saving data LOb " + uid + ":" + loadedPropertyValue);
byte[] outList = baosListOutput.toBytes();
indices.set(uid, outList.length, o -> {
synchronized (indicesAccessLock) {
o.write(outList, 0, outList.length);
}
});
}
break;
case DATABASE_OBJECT:
//System.err.println("Saving data DBObj " + uid + ":" + loadedPropertyValue);
if (loadedPropertyValue == null) {
writeObjectInfoNull(uid);
} else {
((DBObject) loadedPropertyValue).writeToDisk(uid);
}
break;
}
}
}
public void registerClass(Class<?> clazz, int id) {
synchronized (indicesAccessLock) {
kryo.register(clazz, 100 + id);
}
}
public long allocateNullValue() {
synchronized (indicesAccessLock) {
return indices.add(0);
}
}
public long[] allocateNewUIDs(int quantity) {
synchronized (indicesAccessLock) {
long[] ids = new long[quantity];
for (int i = 0; i < quantity; i++) {
ids[i] = allocateNullValue();
}
return ids;
}
}
}

466
src/main/java/org/warp/jcwdb/ann/DatabaseManager.java
View File

@ -1,50 +1,21 @@
package org.warp.jcwdb.ann;
import com.esotericsoftware.kryo.Kryo;
import com.esotericsoftware.kryo.io.Output;
import it.unimi.dsi.fastutil.booleans.BooleanArrayList;
import it.unimi.dsi.fastutil.bytes.ByteArrayList;
import it.unimi.dsi.fastutil.chars.CharArrayList;
import it.unimi.dsi.fastutil.ints.IntArrayList;
import it.unimi.dsi.fastutil.longs.LongArrayList;
import it.unimi.dsi.fastutil.shorts.ShortArrayList;
import org.apache.commons.lang3.reflect.FieldUtils;
import org.apache.commons.lang3.reflect.MethodUtils;
import org.warp.jcwdb.Cleanable;
import org.warp.jcwdb.Cleaner;
import org.warp.jcwdb.FileIndexManager;
import java.io.ByteArrayOutputStream;
import java.io.IOError;
import java.io.IOException;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.nio.file.Path;
import java.util.*;
import java.util.function.Consumer;
import java.util.function.Supplier;
public class DatabaseManager implements Cleanable {
public static final long MAX_LOADED_INDICES = 100000;
private final DBObjectIndicesManager objectIndicesManager;
private final FileIndexManager indices;
private final Cleaner cleaner;
private final JCWDatabase jcwDatabase;
private final DataLoader dataLoader;
private DBObject loadedRootObject = null;
private final Kryo kryo = new Kryo();
private volatile boolean closed;
DatabaseManager(JCWDatabase jcwDatabase, Path dataFile, Path metadataFile, boolean registrationRequired) throws IOException {
this.jcwDatabase = jcwDatabase;
kryo.setRegistrationRequired(registrationRequired);
registerDefaultClasses();
this.indices = new FileIndexManager(dataFile, metadataFile);
if (!indices.has(0)) {
allocateNullValue();
}
this.objectIndicesManager = new DBObjectIndicesManager(this.indices);
DatabaseManager(DataLoader dataLoader) {
this.dataLoader = dataLoader;
this.cleaner = new Cleaner(this);
this.cleaner.start();
Runtime.getRuntime().addShutdownHook(new Thread(() -> {
@ -56,79 +27,13 @@ public class DatabaseManager implements Cleanable {
}));
}
private void registerDefaultClasses() {
int id = -90;
registerClass(boolean[].class, id++);
registerClass(byte[].class, id++);
registerClass(short[].class, id++);
registerClass(char[].class, id++);
registerClass(int[].class, id++);
registerClass(long[].class, id++);
registerClass(Boolean[].class, id++);
registerClass(Byte[].class, id++);
registerClass(Short[].class, id++);
registerClass(Character[].class, id++);
registerClass(Integer[].class, id++);
registerClass(Long[].class, id++);
registerClass(String.class, id++);
registerClass(String[].class, id++);
registerClass(Boolean.class, id++);
registerClass(Byte.class, id++);
registerClass(Short.class, id++);
registerClass(Character.class, id++);
registerClass(Integer.class, id++);
registerClass(Class.class, id++);
registerClass(Object.class, id++);
registerClass(Object[].class, id++);
registerClass(Long.class, id++);
registerClass(String.class, id++);
registerClass(String[].class, id++);
registerClass(boolean[][].class, id++);
registerClass(byte[][].class, id++);
registerClass(short[][].class, id++);
registerClass(char[][].class, id++);
registerClass(int[][].class, id++);
registerClass(long[][].class, id++);
registerClass(String[][].class, id++);
registerClass(List.class, id++);
registerClass(ArrayList.class, id++);
registerClass(LinkedList.class, id++);
registerClass(Set.class, id++);
registerClass(HashSet.class, id++);
registerClass(LinkedHashSet.class, id++);
registerClass(Map.class, id++);
registerClass(HashMap.class, id++);
registerClass(LinkedHashMap.class, id++);
registerClass(TreeMap.class, id++);
registerClass(BooleanArrayList.class, id++);
registerClass(ByteArrayList.class, id++);
registerClass(ShortArrayList.class, id++);
registerClass(CharArrayList.class, id++);
registerClass(IntArrayList.class, id++);
registerClass(LongArrayList.class, id++);
registerClass(TreeSet.class, id++);
registerClass(SortedSet.class, id++);
registerClass(SortedMap.class, id++);
}
@SuppressWarnings("unchecked")
public <T extends DBObject> T loadRoot(Class<T> rootType) throws IOException {
public <T extends DBObject> T loadRoot(Class<T> rootType, SupplierWithIO<T> ifAbsent) throws IOException {
if (loadedRootObject != null) {
throw new RuntimeException("Root already set!");
}
if (isDBObjectNull(0)) {
try {
T root = rootType.getConstructor(JCWDatabase.class).newInstance(this.jcwDatabase);
loadedRootObject = root;
return root;
} catch (InstantiationException | IllegalAccessException | InvocationTargetException | NoSuchMethodException e) {
throw new IOError(e);
}
} else {
T root = (T) loadDBObject(rootType, 0);
loadedRootObject = root;
return root;
}
T root = dataLoader.loadRoot(rootType, ifAbsent);
loadedRootObject = root;
return root;
}
public void close() throws IOException {
@ -138,367 +43,12 @@ public class DatabaseManager implements Cleanable {
if (loadedRootObject != null) {
loadedRootObject.writeToDisk(0);
}
indices.close();
dataLoader.close();
}
}
public void preloadDBObject(DBObject obj, DBObjectIndicesManager.DBObjectInfo objectInfo) throws IOException {
preloadDBObjectFields(obj, objectInfo.getFields());
preloadDBObjectProperties(obj, objectInfo.getProperties());
}
private void preloadDBObjectFields(DBObject obj, long[] fieldUIDs) throws IOException {
// Declare the variables needed to get the biggest field Id
Field[] unorderedFields = getFields(obj);
// Find the biggest field Id
int biggestFieldId = getBiggestFieldId(unorderedFields);
// Declare the other variables
Field[] fields = new Field[biggestFieldId + 1];
DBDataType[] orderedFieldTypes = new DBDataType[biggestFieldId + 1];
// Load all fields metadata and load them
for (Field field : unorderedFields) {
DBField fieldAnnotation = field.getAnnotation(DBField.class);
int fieldId = fieldAnnotation.id();
DBDataType fieldType = fieldAnnotation.type();
loadField(obj, field, fieldType, fieldUIDs[fieldId]);
fields[fieldId] = field;
orderedFieldTypes[fieldId] = fieldType;
}
// Set fields metadata
obj.setFields(fields, orderedFieldTypes, fieldUIDs);
}
private void preloadDBObjectProperties(DBObject obj, long[] propertyUIDs) {
// Declare the variables needed to get the biggest property Id
Method[] unorderedPropertyGetters = getPropertyGetters(obj);
Method[] unorderedPropertySetters = getPropertySetters(obj);
// Find the biggest property Id
int biggestGetter = getBiggestPropertyGetterId(unorderedPropertyGetters);
int biggestSetter = getBiggestPropertySetterId(unorderedPropertySetters);
int biggestPropertyId = biggestGetter > biggestSetter ? biggestGetter : biggestSetter;
for (Method property : unorderedPropertySetters) {
DBPropertySetter fieldAnnotation = property.getAnnotation(DBPropertySetter.class);
int propertyId = fieldAnnotation.id();
if (propertyId > biggestPropertyId) {
biggestPropertyId = propertyId;
}
}
// Declare the other variables
DBDataType[] propertyTypes = new DBDataType[biggestPropertyId + 1];
Method[] propertyGetters = new Method[biggestPropertyId + 1];
Method[] propertySetters = new Method[biggestPropertyId + 1];
Map<String, DBPropertySetter> setterMethods = new LinkedHashMap<>();
Map<String, DBPropertyGetter> getterMethods = new LinkedHashMap<>();
// Load the properties metadata
for (Method property : unorderedPropertyGetters) {
DBPropertyGetter propertyAnnotation = property.getAnnotation(DBPropertyGetter.class);
int propertyId = propertyAnnotation.id();
DBDataType propertyType = propertyAnnotation.type();
propertyTypes[propertyId] = propertyType;
propertyGetters[propertyId] = property;
getterMethods.put(property.getName(), propertyAnnotation);
}
for (Method property : unorderedPropertySetters) {
DBPropertySetter propertyAnnotation = property.getAnnotation(DBPropertySetter.class);
int propertyId = propertyAnnotation.id();
DBDataType propertyType = propertyAnnotation.type();
propertyTypes[propertyId] = propertyType;
propertySetters[propertyId] = property;
setterMethods.put(property.getName(), propertyAnnotation);
}
// Set properties metadata
obj.setProperties(propertyGetters, propertySetters, propertyTypes, propertyUIDs, setterMethods, getterMethods);
}
Method[] getPropertyGetters(DBObject obj) {
return MethodUtils.getMethodsWithAnnotation(obj.getClass(), DBPropertyGetter.class);
}
Method[] getPropertySetters(DBObject obj) {
return MethodUtils.getMethodsWithAnnotation(obj.getClass(), DBPropertySetter.class);
}
protected Field[] getFields(DBObject obj) {
return FieldUtils.getFieldsWithAnnotation(obj.getClass(), DBField.class);
}
int getBiggestPropertyGetterId(Method[] unorderedPropertyGetters) {
int biggestPropertyId = -1;
for (Method property : unorderedPropertyGetters) {
DBPropertyGetter fieldAnnotation = property.getAnnotation(DBPropertyGetter.class);
int propertyId = fieldAnnotation.id();
if (propertyId > biggestPropertyId) {
biggestPropertyId = propertyId;
}
}
return biggestPropertyId;
}
int getBiggestPropertySetterId(Method[] unorderedPropertySetters) {
int biggestPropertyId = -1;
for (Method property : unorderedPropertySetters) {
DBPropertySetter fieldAnnotation = property.getAnnotation(DBPropertySetter.class);
int propertyId = fieldAnnotation.id();
if (propertyId > biggestPropertyId) {
biggestPropertyId = propertyId;
}
}
return biggestPropertyId;
}
protected int getBiggestFieldId(Field[] unorderedFields) {
int biggestFieldId = -1;
for (Field field : unorderedFields) {
DBField fieldAnnotation = field.getAnnotation(DBField.class);
int propertyId = fieldAnnotation.id();
if (propertyId > biggestFieldId) {
biggestFieldId = propertyId;
}
}
return biggestFieldId;
}
public void loadProperty(DBObject obj, int propertyId, Method property, DBDataType propertyType, long propertyUID) throws IOException {
loadData(propertyType, propertyUID, property::getReturnType, (data) -> obj.setLoadedProperty(propertyId, data));
}
public void loadField(DBObject obj, Field field, DBDataType fieldType, long fieldUID) throws IOException {
loadData(fieldType, fieldUID, field::getType, (data) -> {
try {
FieldUtils.writeField(field, obj, data, true);
} catch (IllegalAccessException e) {
throw new RuntimeException(e);
}
});
}
@SuppressWarnings("unchecked")
private void loadData(DBDataType propertyType, long dataUID, Supplier<Class<?>> returnType, Consumer result) throws IOException {
switch (propertyType) {
case DATABASE_OBJECT:
DBObject fieldDBObjectValue = loadDBObject((Class<? extends DBObject>) returnType.get(), dataUID);
//System.err.println("Loading data DBObj " + dataUID + ":" + fieldDBObjectValue);
result.accept(fieldDBObjectValue);
return;
case OBJECT:
Object fieldObjectValue = loadObject(dataUID);
//System.err.println("Loading data Obj " + dataUID + ":" + fieldObjectValue);
result.accept(fieldObjectValue);
return;
case UID_LIST:
LongArrayList fieldListObjectValue = loadListObject(dataUID);
//System.err.println("Loading data LOb " + dataUID + ":" + fieldListObjectValue);
result.accept(fieldListObjectValue);
return;
case BOOLEAN:
boolean fieldBooleanValue = loadBoolean(dataUID);
//System.err.println("Loading data Boo " + dataUID + ":" + fieldBooleanValue);
result.accept(fieldBooleanValue);
return;
case BYTE:
byte fieldByteValue = loadByte(dataUID);
//System.err.println("Loading data Byt " + dataUID + ":" + fieldByteValue);
result.accept(fieldByteValue);
return;
case SHORT:
short fieldShortValue = loadShort(dataUID);
//System.err.println("Loading data Shr " + dataUID + ":" + fieldShortValue);
result.accept(fieldShortValue);
return;
case CHAR:
char fieldCharValue = loadChar(dataUID);
//System.err.println("Loading data Chr " + dataUID + ":" + fieldCharValue);
result.accept(fieldCharValue);
return;
case INTEGER:
int fieldIntValue = loadInt(dataUID);
//System.err.println("Loading data Int " + dataUID + ":" + fieldIntValue);
result.accept(fieldIntValue);
return;
case LONG:
long fieldLongValue = loadLong(dataUID);
//System.err.println("Loading data Lng " + dataUID + ":" + fieldLongValue);
result.accept(fieldLongValue);
return;
default:
throw new NullPointerException("Unknown data type");
}
}
public <T extends DBObject> T loadDBObject(Class<T> type, long propertyUID) throws IOException {
try {
DBObjectIndicesManager.DBObjectInfo objectInfo = readUIDs(propertyUID);
if (objectInfo == null) return null;
return type.getDeclaredConstructor(JCWDatabase.class, DBObjectIndicesManager.DBObjectInfo.class).newInstance(jcwDatabase, objectInfo);
} catch (InstantiationException | IllegalAccessException | InvocationTargetException | NoSuchMethodException e) {
throw new IOException(e);
}
}
private boolean isDBObjectNull(long uid) {
try {
return !objectIndicesManager.has(uid) || objectIndicesManager.get(uid) == null;
} catch (IOException ex) {
throw new IOError(ex);
}
}
@SuppressWarnings("unchecked")
public <T> T loadObject(long uid) throws IOException {
return indices.get(uid, (i, size) -> size == 0 ? null : (T) kryo.readClassAndObject(i));
}
private LongArrayList loadListObject(long uid) throws IOException {
return indices.get(uid, (i, size) -> {
if (size == 0) return null;
LongArrayList list = new LongArrayList();
int listSize = i.readVarInt(true);
for (int li = 0; li < listSize; li++) {
list.add(i.readVarLong(true));
}
return list;
});
}
public boolean loadBoolean(long uid) throws IOException {
return indices.get(uid, (i, size) -> size != 0 && i.readBoolean());
}
public byte loadByte(long uid) throws IOException {
return indices.get(uid, (i, size) -> size == 0 ? 0 : i.readByte());
}
public short loadShort(long uid) throws IOException {
return indices.get(uid, (i, size) -> size == 0 ? 0 : i.readShort());
}
public char loadChar(long uid) throws IOException {
return indices.get(uid, (i, size) -> size == 0 ? 0 : i.readChar());
}
public int loadInt(long uid) throws IOException {
return indices.get(uid, (i, size) -> size == 0 ? 0 : i.readInt());
}
public long loadLong(long uid) throws IOException {
return indices.get(uid, (i, size) -> size == 0 ? 0 : i.readLong());
}
/**
*
* @param uid
* @return
*/
public DBObjectIndicesManager.DBObjectInfo readUIDs(long uid) {
try {
return objectIndicesManager.get(uid);
} catch (IOException e) {
throw new IOError(e);
}
}
public boolean exists(long uid) {
return objectIndicesManager.has(uid);
}
public void writeObjectInfo(long uid, long[] fieldUIDs, long[] propertyUIDs) throws IOException {
//System.err.println("Saving obj. " + uid);
this.objectIndicesManager.set(uid, fieldUIDs, propertyUIDs);
}
private void writeObjectInfoNull(long uid) throws IOException {
this.objectIndicesManager.setNull(uid);
}
public <T> void writeObjectProperty(long uid, DBDataType propertyType, T loadedPropertyValue) throws IOException {
switch (propertyType) {
case BOOLEAN:
indices.set(uid, 1, (o) -> o.writeBoolean(loadedPropertyValue == null ? false : (boolean) loadedPropertyValue));
//System.err.println("Saving data Boo " + uid + ":" + loadedPropertyValue);
break;
case BYTE:
indices.set(uid, Byte.BYTES, (o) -> o.writeByte(loadedPropertyValue == null ? 0 : (byte) loadedPropertyValue));
//System.err.println("Saving data Byt " + uid + ":" + loadedPropertyValue);
break;
case SHORT:
indices.set(uid, Short.BYTES, (o) -> o.writeShort(loadedPropertyValue == null ? 0 : (short) loadedPropertyValue));
//System.err.println("Saving data Shr " + uid + ":" + loadedPropertyValue);
break;
case CHAR:
indices.set(uid, Character.BYTES, (o) -> o.writeChar(loadedPropertyValue == null ? 0 : (char) loadedPropertyValue));
//System.err.println("Saving data Chr " + uid + ":" + loadedPropertyValue);
break;
case INTEGER:
indices.set(uid, Integer.BYTES, (o) -> o.writeInt(loadedPropertyValue == null ? 0 : (int) loadedPropertyValue));
//System.err.println("Saving data Int " + uid + ":" + loadedPropertyValue);
break;
case LONG:
indices.set(uid, Long.BYTES, (o) -> o.writeLong(loadedPropertyValue == null ? 0 : (long) loadedPropertyValue));
//System.err.println("Saving data Lng " + uid + ":" + loadedPropertyValue);
break;
case OBJECT:
Output baosOutput = new Output(new ByteArrayOutputStream());
kryo.writeClassAndObject(baosOutput, loadedPropertyValue);
//System.err.println("Saving data Obj " + uid + ":" + loadedPropertyValue);
if (loadedPropertyValue instanceof Class) {
System.out.println();
}
byte[] out = baosOutput.toBytes();
indices.set(uid, out.length, o -> o.write(out, 0, out.length));
break;
case UID_LIST:
if (loadedPropertyValue == null) {
indices.set(uid, 0, (o) -> {});
} else {
LongArrayList list = (LongArrayList) loadedPropertyValue;
final int listSize = list.size();
Output baosListOutput = new Output(Long.BYTES * 100, Long.BYTES * (listSize > 100 ? listSize : 100));
baosListOutput.writeVarInt(listSize, true);
for (int i = 0; i < listSize; i++) {
baosListOutput.writeVarLong(list.getLong(i), true);
}
//System.err.println("Saving data LOb " + uid + ":" + loadedPropertyValue);
byte[] outList = baosListOutput.toBytes();
indices.set(uid, outList.length, o -> o.write(outList, 0, outList.length));
}
break;
case DATABASE_OBJECT:
//System.err.println("Saving data DBObj " + uid + ":" + loadedPropertyValue);
if (loadedPropertyValue == null) {
writeObjectInfoNull(uid);
} else {
((DBObject) loadedPropertyValue).writeToDisk(uid);
}
break;
}
}
public void registerClass(Class<?> clazz, int id) {
kryo.register(clazz, 100 + id);
}
public long allocateNullValue() {
return indices.add(0);
}
@Override
public long clean() {
return 0;//indices.clean();
}
public long[] allocateNewUIDs(int quantity) {
long[] ids = new long[quantity];
for (int i = 0; i < quantity; i++) {
ids[i] = allocateNullValue();
}
return ids;
}
}

40
src/main/java/org/warp/jcwdb/ann/JCWDatabase.java
View File

@ -1,35 +1,55 @@
package org.warp.jcwdb.ann;
import java.io.IOException;
import java.lang.reflect.InvocationTargetException;
import java.nio.file.Path;
import java.util.function.Supplier;
public class JCWDatabase {
private final DatabaseManager database;
private final DataLoader dataLoader;
private final DataInitializer dataInitializer;
public JCWDatabase(Path dataFile, Path metadataFile, boolean registrationRequired) throws IOException {
this.database = new DatabaseManager(this, dataFile, metadataFile, registrationRequired);
this.dataLoader = new DataLoader(this, dataFile, metadataFile, registrationRequired);
this.dataInitializer = new DataInitializer(dataLoader);
this.database = new DatabaseManager(dataLoader);
}
public <T extends DBObject> T loadRoot(Class<T> rootClass) {
try {
return database.loadRoot(rootClass);
} catch (IOException e) {
throw new RuntimeException(e);
}
public <T extends DBObject> T loadRoot(Class<T> rootClass) throws IOException {
return loadRoot(rootClass, () -> {
try {
return rootClass.getConstructor(JCWDatabase.class).newInstance(this);
} catch (InstantiationException | IllegalAccessException | InvocationTargetException | NoSuchMethodException e) {
throw new IOException(e);
}
});
}
DatabaseManager getDatabaseManager() {
return database;
public <T extends DBObject> T loadRoot(Class<T> rootClass, SupplierWithIO<T> ifAbsent) throws IOException {
return database.loadRoot(rootClass, ifAbsent);
}
public void registerClass(Class<?> clazz, int id) {
if (id < 0) {
throw new IllegalArgumentException();
}
database.registerClass(clazz, id);
dataLoader.registerClass(clazz, id);
}
public void close() throws IOException {
database.close();
}
public DataLoader getDataLoader() {
return dataLoader;
}
public DataInitializer getDataInitializer() {
return dataInitializer;
}
public void initializeDBObject(DBObject dbObject) throws IOException {
dataInitializer.initializeDBObject(dbObject);
}
}

19
src/main/java/org/warp/jcwdb/ann/RunnableWithIO.java Normal file
View File

@ -0,0 +1,19 @@
package org.warp.jcwdb.ann;
import java.io.IOException;
@FunctionalInterface
public interface RunnableWithIO {
/**
* When an object implementing interface <code>Runnable</code> is used
* to create a thread, starting the thread causes the object's
* <code>run</code> method to be called in that separately executing
* thread.
* <p>
* The general contract of the method <code>run</code> is that it may
* take any action whatsoever.
*
* @see java.lang.Thread#run()
*/
public abstract void run() throws IOException;
}

8
src/main/java/org/warp/jcwdb/ann/SupplierWithIO.java Normal file
View File

@ -0,0 +1,8 @@
package org.warp.jcwdb.ann;
import java.io.IOException;
@FunctionalInterface
public interface SupplierWithIO<T> {
public T getWithIO() throws IOException;
}

22
src/test/java/org/warp/jcwdb/tests/DBDBObjectListTests.java
View File

@ -20,6 +20,7 @@ public class DBDBObjectListTests {
db.get().registerClass(TestUtils.class, 0);
db.get().registerClass(TestUtils.RootClass.class, 1);
db.get().registerClass(Class.class, 2);
System.out.println("Loading root");
root = db.get().loadRoot(RootWithList.class);
});
root.list = new DBDBObjectList<>(db.get(), TestUtils.RootClass.class);
@ -37,7 +38,7 @@ public class DBDBObjectListTests {
}
@Test
public void shouldMatchList() {
public void shouldMatchList() throws IOException {
checkEmptyList();
assertEquals(200, root.list.size());
for (int i = 0; i < 200; i++) {
@ -45,7 +46,7 @@ public class DBDBObjectListTests {
}
}
private void checkEmptyList() {
private void checkEmptyList() throws IOException {
DBObjectList<String> list = new DBObjectList<>(db.get());
assertEquals(null, list.getLast());
assertEquals(0, list.size());
@ -63,15 +64,20 @@ public class DBDBObjectListTests {
public static class RootWithList extends DBObject {
public RootWithList(JCWDatabase database) {
@DBField(id = 0, type = DBDataType.DATABASE_OBJECT)
public DBDBObjectList<TestUtils.RootClass> list;
public RootWithList() {
super();
}
public RootWithList(JCWDatabase database) throws IOException {
super(database);
}
public RootWithList(JCWDatabase database, DBObjectIndicesManager.DBObjectInfo objectInfo) throws IOException {
super(database, objectInfo);
@Override
public void initialize() throws IOException {
list = new DBDBObjectList<>(database, TestUtils.RootClass.class);
}
@DBField(id = 0, type = DBDataType.DATABASE_OBJECT)
public DBDBObjectList<TestUtils.RootClass> list;
}
}

21
src/test/java/org/warp/jcwdb/tests/DBMultipleDBObjects.java
View File

@ -43,20 +43,20 @@ public class DBMultipleDBObjects {
public static class RootTwoClasses extends DBObject {
public RootTwoClasses(JCWDatabase database) {
super(database);
}
public RootTwoClasses(JCWDatabase database, DBObjectIndicesManager.DBObjectInfo objectInfo) throws IOException {
super(database, objectInfo);
}
@DBField(id = 0, type = DBDataType.DATABASE_OBJECT)
public TestUtils.RootClass class1;
@DBField(id = 1, type = DBDataType.DATABASE_OBJECT)
public TestUtils.RootClass class2;
public RootTwoClasses() {
super();
}
public RootTwoClasses(JCWDatabase database) throws IOException {
super(database);
}
@DBPropertyGetter(id = 0, type = DBDataType.DATABASE_OBJECT)
public TestUtils.RootClass getClass3() {
return getProperty();
@ -76,5 +76,10 @@ public class DBMultipleDBObjects {
public void setClass4(TestUtils.RootClass value) {
setProperty(value);
}
@Override
public void initialize() throws IOException {
}
}
}

3
src/test/java/org/warp/jcwdb/tests/DBNestedDBObjects.java
View File

@ -3,12 +3,9 @@ package org.warp.jcwdb.tests;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.warp.jcwdb.ann.*;
import org.warp.jcwdb.utils.NestedClass;
import org.warp.jcwdb.utils.TestUtils;
import java.io.IOException;
import static org.junit.Assert.*;
public class DBNestedDBObjects {

15
src/test/java/org/warp/jcwdb/tests/DBRootCreation.java
View File

@ -10,7 +10,7 @@ import org.warp.jcwdb.utils.TestUtils;
import java.io.IOException;
import static org.junit.Assert.*;
import static org.junit.Assert.assertTrue;
public class DBRootCreation {
private TestUtils.WrappedDb db;
@ -21,7 +21,7 @@ public class DBRootCreation {
}
@Test
public void shouldCreateRoot() {
public void shouldCreateRoot() throws IOException {
RootClass root = db.get().loadRoot(RootClass.class);
assertTrue(root.test());
}
@ -33,16 +33,17 @@ public class DBRootCreation {
public static class RootClass extends DBObject {
public RootClass(JCWDatabase database) {
public RootClass(JCWDatabase database) throws IOException {
super(database);
}
public RootClass(JCWDatabase database, DBObjectIndicesManager.DBObjectInfo objectInfo) throws IOException {
super(database, objectInfo);
}
public boolean test() {
return true;
}
@Override
public void initialize() throws IOException {
}
}
}

90
src/test/java/org/warp/jcwdb/tests/NDBMultipleEnhancedObjects.java Normal file
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@ -0,0 +1,90 @@
package org.warp.jcwdb.tests;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.warp.cowdb.EnhancedObject;
import org.warp.cowdb.IDatabase;
import org.warp.jcwdb.ann.DBDataType;
import org.warp.jcwdb.ann.DBField;
import org.warp.jcwdb.ann.DBPropertyGetter;
import org.warp.jcwdb.ann.DBPropertySetter;
import org.warp.jcwdb.utils.NTestUtils;
import java.io.IOException;
public class NDBMultipleEnhancedObjects {
private NTestUtils.WrappedDb db;
private RootTwoClasses root;
@Before
public void setUp() throws Exception {
db = NTestUtils.wrapDb().create((db) -> {
root = db.get().loadRoot(RootTwoClasses.class);
});
root.class1 = new NTestUtils.RootClass(db.get());
db.setRootClassValues(root.class1);
root.class2 = new NTestUtils.RootClass(db.get());
db.setRootClassValues(root.class2);
root.setClass3(new NTestUtils.RootClass(db.get()));
db.setRootClassValues(root.getClass3());
root.setClass4(new NTestUtils.RootClass(db.get()));
db.setRootClassValues(root.getClass4());
db.closeAndReopen();
}
@Test
public void shouldMatchMultipleEnhancedObjects() {
db.testRootClassValues(root.class1);
db.testRootClassValues(root.class2);
db.testRootClassValues(root.getClass3());
db.testRootClassValues(root.getClass4());
}
@After
public void tearDown() throws Exception {
db.delete();
}
public static class RootTwoClasses extends EnhancedObject {
@DBField(id = 0, type = DBDataType.DATABASE_OBJECT)
public NTestUtils.RootClass class1;
@DBField(id = 1, type = DBDataType.DATABASE_OBJECT)
public NTestUtils.RootClass class2;
public RootTwoClasses() {
super();
}
public RootTwoClasses(IDatabase database) throws IOException {
super(database);
}
@DBPropertyGetter(id = 0, type = DBDataType.DATABASE_OBJECT)
public NTestUtils.RootClass getClass3() {
return getProperty();
}
@DBPropertySetter(id = 0, type = DBDataType.DATABASE_OBJECT)
public void setClass3(NTestUtils.RootClass value) {
setProperty(value);
}
@DBPropertyGetter(id = 1, type = DBDataType.DATABASE_OBJECT)
public NTestUtils.RootClass getClass4() {
return getProperty();
}
@DBPropertySetter(id = 1, type = DBDataType.DATABASE_OBJECT)
public void setClass4(NTestUtils.RootClass value) {
setProperty(value);
}
@Override
public void initialize() throws IOException {
}
}
}

32
src/test/java/org/warp/jcwdb/utils/ConsumerWithIO.java Normal file
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@ -0,0 +1,32 @@
package org.warp.jcwdb.utils;
import java.io.IOException;
import java.util.Objects;
@FunctionalInterface
public interface ConsumerWithIO<T> {
/**
* Performs this operation on the given argument.
*
* @param t the input argument
*/
void accept(T t) throws IOException;
/**
* Returns a composed {@code Consumer} that performs, in sequence, this
* operation followed by the {@code after} operation. If performing either
* operation throws an exception, it is relayed to the caller of the
* composed operation. If performing this operation throws an exception,
* the {@code after} operation will not be performed.
*
* @param after the operation to perform after this operation
* @return a composed {@code Consumer} that performs in sequence this
* operation followed by the {@code after} operation
* @throws NullPointerException if {@code after} is null
*/
default ConsumerWithIO<T> andThen(ConsumerWithIO<? super T> after) {
Objects.requireNonNull(after);
return (T t) -> { accept(t); after.accept(t); };
}
}

29
src/test/java/org/warp/jcwdb/utils/NSimplestClass.java Normal file
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@ -0,0 +1,29 @@
package org.warp.jcwdb.utils;
import org.warp.cowdb.Database;
import org.warp.cowdb.EnhancedObject;
import org.warp.jcwdb.ann.DBDataType;
import org.warp.jcwdb.ann.DBField;
import org.warp.jcwdb.ann.DBObject;
import org.warp.jcwdb.ann.JCWDatabase;
import java.io.IOException;
public class NSimplestClass extends EnhancedObject {
@DBField(id = 0, type = DBDataType.BOOLEAN)
public boolean field1;
public NSimplestClass() {
}
public NSimplestClass(Database database) throws IOException {
super(database);
}
@Override
public void initialize() throws IOException {
field1 = true;
}
}

383
src/test/java/org/warp/jcwdb/utils/NTestUtils.java Normal file
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@ -0,0 +1,383 @@
package org.warp.jcwdb.utils;
import it.unimi.dsi.fastutil.longs.LongArrayList;
import org.warp.cowdb.Database;
import org.warp.cowdb.EnhancedObject;
import org.warp.cowdb.IDatabase;
import org.warp.jcwdb.ann.*;
import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Comparator;
import static org.junit.Assert.*;
public class NTestUtils {
public static WrappedDb wrapDb() {
return new WrappedDb();
}
public static class WrappedDb {
private Database db;
private Path tempDir;
private RunnableWithIO r;
private WrappedDb() {
}
public WrappedDb create() throws IOException {
tempDir = Files.createTempDirectory("tests-");
db = openDatabase();
if (r != null) {
r.run();
}
return this;
}
public WrappedDb create(ConsumerWithIO<NTestUtils.WrappedDb> r) throws IOException {
this.r = () -> r.accept(WrappedDb.this);
this.create();
return this;
}
private Database openDatabase() throws IOException {
return new Database(tempDir.resolve(Paths.get("data.db")), tempDir.resolve(Paths.get("blocks.dat")), tempDir.resolve(Paths.get("references.dat")));
}
public void delete() throws IOException {
db.close();
deleteDir(tempDir);
}
public Database get() {
return db;
}
private void deleteDir(Path p) throws IOException {
Files.walk(p)
.sorted(Comparator.reverseOrder())
.map(Path::toFile)
.forEach(File::delete);
}
public void closeAndReopen() throws IOException {
db.close();
db = openDatabase();
r.run();
}
public void setRootClassValues(RootClass root) throws IOException {
setRootClassFields(root);
setRootClassProperties(root);
}
public void setRootClassFields(RootClass root) throws IOException {
root.field1 = true;
root.field2 = 2;
root.field3 = 3;
root.field4 = 4;
root.field5 = 5;
root.field6 = 6;
root.field7 = "Test";
root.field8 = new LongArrayList();
root.field8.add(0);
root.field8.add(1);
root.field8.add(2);
root.field8.add(Long.MAX_VALUE/2);
root.field8.add(Long.MIN_VALUE/2);
root.field8.add(Long.MAX_VALUE);
root.field8.add(Long.MIN_VALUE);
root.field9 = new NSimplestClass(db);
root.field9.field1 = true;
}
public void setRootClassProperties(RootClass root) throws IOException {
root.set1(true);
root.set2((byte)2);
root.set3((short)3);
root.set4((char)4);
root.set5(5);
root.set6(6);
root.set7("Test");
LongArrayList lArrayList = new LongArrayList();
lArrayList.add(0);
lArrayList.add(1);
lArrayList.add(2);
lArrayList.add(Long.MAX_VALUE/2);
lArrayList.add(Long.MIN_VALUE/2);
lArrayList.add(Long.MAX_VALUE);
lArrayList.add(Long.MIN_VALUE);
root.set8(lArrayList);
NSimplestClass simplestClass9 = new NSimplestClass(db);
simplestClass9.field1 = true;
root.set9(simplestClass9);
}
public void testRootClassValues(RootClass root) {
testRootClassFields(root);
testRootClassProperties(root);
}
public void testRootClassFields(RootClass root) {
shouldGetFieldBoolean(root);
shouldGetFieldByte(root);
shouldGetFieldShort(root);
shouldGetFieldCharacter(root);
shouldGetFieldInteger(root);
shouldGetFieldLong(root);
shouldGetFieldObject(root);
shouldGetFieldUID(root);
shouldGetFieldDBObject(root);
}
public void testRootClassProperties(RootClass root) {
shouldGetPropertyBoolean(root);
shouldGetPropertyByte(root);
shouldGetPropertyShort(root);
shouldGetPropertyCharacter(root);
shouldGetPropertyInteger(root);
shouldGetPropertyLong(root);
shouldGetPropertyObject(root);
shouldGetPropertyUID(root);
shouldGetPropertyDBObject(root);
}
private void shouldGetFieldBoolean(RootClass root) {
assertTrue(root.field1);
}
private void shouldGetPropertyBoolean(RootClass root) {
assertTrue(root.get1());
}
private void shouldGetFieldByte(RootClass root) {
assertEquals(2, root.field2);
}
private void shouldGetPropertyByte(RootClass root) {
assertEquals(2, root.get2());
}
private void shouldGetFieldShort(RootClass root) {
assertEquals(3, root.field3);
}
private void shouldGetPropertyShort(RootClass root) {
assertEquals(3, root.get3());
}
private void shouldGetFieldCharacter(RootClass root) {
assertEquals(4, root.field4);
}
private void shouldGetPropertyCharacter(RootClass root) {
assertEquals(4, root.get4());
}
private void shouldGetFieldInteger(RootClass root) {
assertEquals(5, root.field5);
}
private void shouldGetPropertyInteger(RootClass root) {
assertEquals(5, root.get5());
}
private void shouldGetFieldLong(RootClass root) {
assertEquals(6, root.field6);
}
private void shouldGetPropertyLong(RootClass root) {
assertEquals(6, root.get6());
}
private void shouldGetFieldObject(RootClass root) {
shouldGetObject(root.field7);
}
private void shouldGetPropertyObject(RootClass root) {
shouldGetObject(root.get7());
}
private void shouldGetFieldDBObject(RootClass root) {
assertTrue(root.field9.field1);
}
private void shouldGetPropertyDBObject(RootClass root) {
assertTrue(root.get9().field1);
}
private void shouldGetObject(String val) {
assertNotNull(val);
assertEquals("Test", val);
}
private void shouldGetDBObject(SimplestClass val) {
assertNotNull(val);
assertTrue(val.field1);
}
private void shouldGetFieldUID(RootClass root) {
shouldGetUID(root.field8);
}
private void shouldGetPropertyUID(RootClass root) {
shouldGetUID(root.get8());
}
private void shouldGetUID(LongArrayList val) {
assertNotNull(val);
assertEquals(7, val.size());
assertEquals(0, val.getLong(0));
assertEquals(val.getLong(5), Long.MAX_VALUE);
assertEquals(val.getLong(6), Long.MIN_VALUE);
}
public void onLoad(RunnableWithIO r) {
this.r = r;
}
}
public static class RootClass extends EnhancedObject {
@DBField(id = 0, type = DBDataType.BOOLEAN)
public boolean field1;
@DBField(id = 1, type = DBDataType.BYTE)
public byte field2;
@DBField(id = 2, type = DBDataType.SHORT)
public short field3;
@DBField(id = 3, type = DBDataType.CHAR)
public char field4;
@DBField(id = 4, type = DBDataType.INTEGER)
public int field5;
@DBField(id = 5, type = DBDataType.LONG)
public long field6;
@DBField(id = 6, type = DBDataType.OBJECT)
public String field7;
@DBField(id = 7, type = DBDataType.REFERENCES_LIST)
public LongArrayList field8;
@DBField(id = 8, type = DBDataType.DATABASE_OBJECT)
public NSimplestClass field9;
public RootClass() {
}
public RootClass(IDatabase database) throws IOException {
super(database);
}
@DBPropertyGetter(id = 0, type = DBDataType.BOOLEAN)
public boolean get1() {
return getProperty();
}
@DBPropertyGetter(id = 1, type = DBDataType.BYTE)
public byte get2() {
return getProperty();
}
@DBPropertyGetter(id = 2, type = DBDataType.SHORT)
public short get3() {
return getProperty();
}
@DBPropertyGetter(id = 3, type = DBDataType.CHAR)
public char get4() {
return getProperty();
}
@DBPropertyGetter(id = 4, type = DBDataType.INTEGER)
public int get5() {
return getProperty();
}
@DBPropertyGetter(id = 5, type = DBDataType.LONG)
public long get6() {
return getProperty();
}
@DBPropertyGetter(id = 6, type = DBDataType.OBJECT)
public String get7() {
return getProperty();
}
@DBPropertyGetter(id = 7, type = DBDataType.REFERENCES_LIST)
public LongArrayList get8() {
return getProperty();
}
@DBPropertyGetter(id = 8, type = DBDataType.DATABASE_OBJECT)
public NSimplestClass get9() {
return getProperty();
}
@DBPropertySetter(id = 0, type = DBDataType.BOOLEAN)
public void set1(boolean val) {
setProperty(val);
}
@DBPropertySetter(id = 1, type = DBDataType.BYTE)
public void set2(byte val) {
setProperty(val);
}
@DBPropertySetter(id = 2, type = DBDataType.SHORT)
public void set3(short val) {
setProperty(val);
}
@DBPropertySetter(id = 3, type = DBDataType.CHAR)
public void set4(char val) {
setProperty(val);
}
@DBPropertySetter(id = 4, type = DBDataType.INTEGER)
public void set5(int val) {
setProperty(val);
}
@DBPropertySetter(id = 5, type = DBDataType.LONG)
public void set6(long val) {
setProperty(val);
}
@DBPropertySetter(id = 6, type = DBDataType.OBJECT)
public void set7(String val) {
setProperty(val);
}
@DBPropertySetter(id = 7, type = DBDataType.REFERENCES_LIST)
public void set8(LongArrayList val) {
setProperty(val);
}
@DBPropertySetter(id = 8, type = DBDataType.DATABASE_OBJECT)
public void set9(NSimplestClass val) {
setProperty(val);
}
public boolean test() {
return true;
}
@Override
public void initialize() throws IOException {
}
}
}

15
src/test/java/org/warp/jcwdb/utils/NestedClass.java
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@ -12,6 +12,14 @@ public class NestedClass extends DBObject {
@DBField(id = 1, type = DBDataType.DATABASE_OBJECT)
public NestedClass child;
public NestedClass() {
}
public NestedClass(JCWDatabase database) throws IOException {
super(database);
}
@DBPropertySetter(id = 0, type = DBDataType.DATABASE_OBJECT)
public void setValue(NestedClass value) {
setProperty(value);
@ -22,11 +30,8 @@ public class NestedClass extends DBObject {
return getProperty();
}
public NestedClass(JCWDatabase database) {
super(database);
}
@Override
public void initialize() throws IOException {
public NestedClass(JCWDatabase database, DBObjectIndicesManager.DBObjectInfo objectInfo) throws IOException {
super(database, objectInfo);
}
}

14
src/test/java/org/warp/jcwdb/utils/SimplestClass.java
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@ -9,12 +9,16 @@ public class SimplestClass extends DBObject {
@DBField(id = 0, type = DBDataType.BOOLEAN)
public boolean field1;
public SimplestClass(JCWDatabase database) {
super(database);
field1 = true;
public SimplestClass() {
}
public SimplestClass(JCWDatabase database, DBObjectIndicesManager.DBObjectInfo objectInfo) throws IOException {
super(database, objectInfo);
public SimplestClass(JCWDatabase database) throws IOException {
super(database);
}
@Override
public void initialize() throws IOException {
field1 = true;
}
}

34
src/test/java/org/warp/jcwdb/utils/TestUtils.java
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@ -12,7 +12,6 @@ import java.util.Comparator;
import java.util.function.Consumer;
import static org.junit.Assert.*;
import static org.junit.Assert.assertEquals;
public class TestUtils {
public static WrappedDb wrapDb() {
@ -23,7 +22,7 @@ public class TestUtils {
private JCWDatabase db;
private Path tempDir;
private Runnable r;
private RunnableWithIO r;
private WrappedDb() {
@ -38,7 +37,7 @@ public class TestUtils {
return this;
}
public WrappedDb create(Consumer<TestUtils.WrappedDb> r) throws IOException {
public WrappedDb create(ConsumerWithIO<WrappedDb> r) throws IOException {
this.r = () -> r.accept(WrappedDb.this);
this.create();
return this;
@ -70,12 +69,12 @@ public class TestUtils {
r.run();
}
public void setRootClassValues(RootClass root) {
public void setRootClassValues(RootClass root) throws IOException {
setRootClassFields(root);
setRootClassProperties(root);
}
public void setRootClassFields(RootClass root) {
public void setRootClassFields(RootClass root) throws IOException {
root.field1 = true;
root.field2 = 2;
root.field3 = 3;
@ -96,7 +95,7 @@ public class TestUtils {
}
public void setRootClassProperties(RootClass root) {
public void setRootClassProperties(RootClass root) throws IOException {
root.set1(true);
root.set2((byte)2);
root.set3((short)3);
@ -238,7 +237,7 @@ public class TestUtils {
assertEquals(val.getLong(6), Long.MIN_VALUE);
}
public void onLoad(Runnable r) {
public void onLoad(RunnableWithIO r) {
this.r = r;
}
}
@ -272,6 +271,14 @@ public class TestUtils {
@DBField(id = 8, type = DBDataType.DATABASE_OBJECT)
public SimplestClass field9;
public RootClass() {
}
public RootClass(JCWDatabase database) throws IOException {
super(database);
}
@DBPropertyGetter(id = 0, type = DBDataType.BOOLEAN)
public boolean get1() {
return getProperty();
@ -362,16 +369,13 @@ public class TestUtils {
setProperty(val);
}
public RootClass(JCWDatabase database) {
super(database);
}
public RootClass(JCWDatabase database, DBObjectIndicesManager.DBObjectInfo objectInfo) throws IOException {
super(database, objectInfo);
}
public boolean test() {
return true;
}
@Override
public void initialize() throws IOException {
}
}
}