Updated

pom.xml

@@ -6,7 +6,7 @@
 
     <groupId>org.warp</groupId>
     <artifactId>jcwdb</artifactId>
-    <version>1.1-SNAPSHOT</version>
+    <version>1.2-SNAPSHOT</version>
 
     <name>jcwdb</name>
     <!-- FIXME change it to the project's website -->
@@ -41,7 +41,7 @@
         <dependency>
             <groupId>com.esotericsoftware</groupId>
             <artifactId>kryo</artifactId>
-            <version>5.0.0-RC2-SNAPSHOT</version>
+            <version>5.0.0-RC1</version>
         </dependency>
         <dependency>
             <groupId>net.openhft</groupId>
@@ -52,7 +52,13 @@
         <dependency>
             <groupId>org.apache.commons</groupId>
             <artifactId>commons-lang3</artifactId>
-            <version>3.8.1</version>
+            <version>3.5</version>
+        </dependency>
+        <dependency>
+            <groupId>org.jetbrains</groupId>
+            <artifactId>annotations</artifactId>
+            <version>RELEASE</version>
+            <scope>compile</scope>
         </dependency>
     </dependencies>
 

src/main/java/org/warp/jcwdb/ann/DBArrayList.java

@@ -0,0 +1,110 @@
+package org.warp.jcwdb.ann;
+
+import it.unimi.dsi.fastutil.longs.LongArrayList;
+
+import java.io.IOError;
+import java.io.IOException;
+import java.util.StringJoiner;
+
+public abstract class DBArrayList<T> extends DBObject {
+
+	private final Object indicesAccessLock = new Object();
+
+	@DBField(id = 0, type = DBDataType.UID_LIST)
+	private LongArrayList indices;
+
+	public DBArrayList(JCWDatabase database) {
+		super(database);
+		indices = new LongArrayList();
+	}
+
+	public DBArrayList(JCWDatabase database, DBObjectIndicesManager.DBObjectInfo objectInfo) throws IOException {
+		super(database, objectInfo);
+	}
+
+	public T get(int index) {
+		synchronized (indicesAccessLock) {
+			try {
+				long uid = indices.getLong(index);
+				return loadItem(uid);
+			} catch (IOException e) {
+				throw new IOError(e);
+			}
+		}
+	}
+
+	public void add(T value) {
+		long uid = databaseManager.allocateNullValue();
+		synchronized (indicesAccessLock) {
+			indices.add(uid);
+			try {
+				writeItemToDisk(uid, value);
+			} catch (IOException e) {
+				throw new IOError(e);
+			}
+		}
+	}
+
+	public void update(int index, T value) {
+		synchronized (indicesAccessLock) {
+			set(index, value);
+		}
+	}
+
+	public void set(int index, T value) {
+		long uid = databaseManager.allocateNullValue();
+		synchronized (indicesAccessLock) {
+			indices.set(index, uid);
+			try {
+				writeItemToDisk(uid, value);
+			} catch (IOException e) {
+				throw new IOError(e);
+			}
+		}
+	}
+
+	public void add(int index, T value) {
+		long uid = databaseManager.allocateNullValue();
+		synchronized (indicesAccessLock) {
+			indices.add(index, uid);
+			try {
+				writeItemToDisk(uid, value);
+			} catch (IOException e) {
+				throw new IOError(e);
+			}
+		}
+	}
+
+	public T getLast() {
+		synchronized (indicesAccessLock) {
+			if (indices.size() > 0) {
+				return get(indices.size() - 1);
+			} else {
+				return null;
+			}
+		}
+	}
+
+	public boolean isEmpty() {
+		synchronized (indicesAccessLock) {
+			return indices.size() <= 0;
+		}
+	}
+
+	public int size() {
+		synchronized (indicesAccessLock) {
+			return indices.size();
+		}
+	}
+
+	protected abstract T loadItem(long uid) throws IOException;
+
+	protected abstract void writeItemToDisk(long uid, T item) throws IOException;
+
+	@Override
+	public String toString() {
+		return new StringJoiner(", ", DBArrayList.class.getSimpleName() + "[", "]")
+						.add(indices.size() + " items")
+						.toString();
+	}
+}

src/main/java/org/warp/jcwdb/ann/DBDBObjectList.java

@@ -1,20 +1,14 @@
 package org.warp.jcwdb.ann;
 
 import java.io.IOException;
-import java.util.LinkedList;
 
-public class DBDBObjectList<T extends DBObject> extends DBList<T> {
+public class DBDBObjectList<T extends DBObject> extends DBArrayList<T> {
 
-	@DBField(id = 2, type = DBDataType.OBJECT)
+	@DBField(id = 1, type = DBDataType.OBJECT)
-	public Class<T> type;
+	private Class<T> type;
 
-	public DBDBObjectList(JCWDatabase db, Class<T> type) {
+	public DBDBObjectList(JCWDatabase database, Class<T> type) {
-		super(db, 10);
+		super(database);
-		this.type = type;
-	}
-
-	public DBDBObjectList(JCWDatabase db, Class<T> type, int maxLoadedItems) {
-		super(db, maxLoadedItems);
 		this.type = type;
 	}
 
@@ -23,13 +17,12 @@ public class DBDBObjectList<T extends DBObject> extends DBList<T> {
 	}
 
 	@Override
-	protected T loadObjectFromDatabase(long uid) throws IOException {
+	protected T loadItem(long uid) throws IOException {
-		return database.loadDBObject(type, uid);
+		return databaseManager.loadDBObject(type, uid);
 	}
 
 	@Override
-	protected long saveObjectToDatabase(long uid, T value) throws IOException {
+	protected void writeItemToDisk(long uid, T item) throws IOException {
-		database.writeObjectProperty(uid, DBDataType.DATABASE_OBJECT, value);
+		databaseManager.writeObjectProperty(uid, DBDataType.DATABASE_OBJECT, item);
-		return uid;
 	}
 }

src/main/java/org/warp/jcwdb/ann/DBDataType.java

@@ -3,6 +3,11 @@ package org.warp.jcwdb.ann;
 public enum DBDataType {
 	DATABASE_OBJECT,
 	OBJECT,
+	BOOLEAN,
+	BYTE,
+	SHORT,
+	CHAR,
 	INTEGER,
+	LONG,
 	UID_LIST
 }

src/main/java/org/warp/jcwdb/ann/DBList.java

@@ -1,171 +0,0 @@
-package org.warp.jcwdb.ann;
-
-import it.unimi.dsi.fastutil.longs.LongArrayList;
-
-import java.io.IOError;
-import java.io.IOException;
-import java.util.LinkedList;
-import java.util.StringJoiner;
-
-public abstract class DBList<T> extends DBObject {
-	@DBField(id = 0, type = DBDataType.INTEGER)
-	private int maxLoadedItems;
-
-	@DBField(id = 1, type = DBDataType.UID_LIST)
-	private LongArrayList itemIndices;
-
-	public DBList(JCWDatabase db, int maxLoadedItems) {
-		super(db);
-		this.maxLoadedItems = maxLoadedItems;
-		this.itemIndices = new LongArrayList();
-	}
-
-	public DBList(JCWDatabase database, DBObjectIndicesManager.DBObjectInfo objectInfo) throws IOException {
-		super(database, objectInfo);
-	}
-
-	public int getMaxLoadedItems() {
-		return maxLoadedItems;
-	}
-
-	public void add(T obj) {
-		try {
-			itemIndices.add(saveObjectToDatabase(database.allocateNullValue(), obj));
-		} catch (IOException e) {
-			throw new IOError(e);
-		}
-	}
-
-	public int size() {
-		return this.itemIndices.size();
-	}
-
-	private T loadObjectAt(int i) throws IOException {
-		return loadObjectFromDatabase(itemIndices.getLong(i));
-	}
-
-	protected abstract T loadObjectFromDatabase(long uid) throws IOException;
-
-	protected abstract long saveObjectToDatabase(long uid, T value) throws IOException;
-
-	public DBListIterator<T> iterator() {
-		return new DBListIterator<>() {
-			private int position = itemIndices.size();
-			private LinkedList<T> cachedItems;
-
-			private int objectToSavePosition;
-			private T objectToSave;
-
-			@Override
-			public boolean hasNext() {
-				if (position > 0) {
-					return true;
-				} else {
-					try {
-						saveObservedObject();
-					} catch (IOException e) {
-						throw new IOError(e);
-					}
-					return false;
-				}
-			}
-
-			@Override
-			public T next() {
-				position--;
-				if (position < 0) {
-					throw new NullPointerException("Position < 0");
-				}
-				if (cachedItems == null || cachedItems.size() == 0) {
-					try {
-						cachedItems = fillCache(position);
-					} catch (IOException e) {
-						throw new RuntimeException(e);
-					}
-				}
-				try {
-					return switchObservedObject(position, cachedItems.removeFirst());
-				} catch (IOException e) {
-					throw new RuntimeException(e);
-				}
-			}
-
-			@Override
-			public void remove() {
-				try {
-					saveObservedObject();
-				} catch (IOException e) {
-					throw new RuntimeException(e);
-				}
-				itemIndices.removeLong(position);
-			}
-
-			@Override
-			public void insert(T obj) {
-				try {
-					itemIndices.add(position, saveObjectToDatabase(database.allocateNullValue(), obj));
-				} catch (IOException e) {
-					throw new IOError(e);
-				}
-			}
-
-			@Override
-			public void set(T obj) {
-				try {
-					itemIndices.set(position, saveObjectToDatabase(database.allocateNullValue(), obj));
-				} catch (IOException e) {
-					throw new IOError(e);
-				}
-			}
-
-			private LinkedList<T> fillCache(int position) throws IOException {
-				LinkedList<T> cachedItems = new LinkedList<>();
-				int firstObjectIndex = position;
-				int lastObjectIndex = firstObjectIndex - maxLoadedItems;
-				if (lastObjectIndex < 0) {
-					lastObjectIndex = 0;
-				}
-				for (int i = firstObjectIndex; i >= lastObjectIndex; i--) {
-					cachedItems.addLast(loadObjectAt(i));
-				}
-				return cachedItems;
-			}
-
-			private void saveObservedObject() throws IOException {
-				if (objectToSave != null) {
-					itemIndices.set(objectToSavePosition, saveObjectToDatabase(database.allocateNullValue(), objectToSave));
-					objectToSave = null;
-					objectToSavePosition = 0;
-				}
-			}
-
-			private T switchObservedObject(int position, T obj) throws IOException {
-				saveObservedObject();
-				objectToSave = obj;
-				objectToSavePosition = position;
-				return obj;
-			}
-		};
-	}
-
-	public interface DBListIterator<T> {
-		boolean hasNext();
-
-		T next();
-
-		void remove();
-
-		void insert(T obj);
-
-		void set(T obj);
-	}
-
-	@Override
-	public String toString() {
-		return new StringJoiner(", ", DBList.class.getSimpleName() + "[", "]")
-						.add("size=" + size())
-						.add("maxLoadedItems=" + maxLoadedItems)
-						.add("itemIndices=" + (itemIndices.size() < 100 ? itemIndices : "["+itemIndices.size()+" items]"))
-						.toString();
-	}
-}

src/main/java/org/warp/jcwdb/ann/DBObject.java

@@ -10,7 +10,8 @@ import java.util.LinkedHashMap;
 import java.util.Map;
 
 public abstract class DBObject {
-	protected final DatabaseManager database;
+	protected final JCWDatabase database;
+	protected final DatabaseManager databaseManager;
 	private Field[] fields;
 	private DBDataType[] fieldTypes;
 	private long[] fieldUIDs;
@@ -27,7 +28,8 @@ public abstract class DBObject {
 	private final Object propertiesAccessLock = new Object();
 
 	public DBObject(JCWDatabase database) {
-		this.database = database.getDatabaseManager();
+		this.database = database;
+		this.databaseManager = database.getDatabaseManager();
 		try {
 			initializeDBObject();
 		} catch (IOException e) {
@@ -35,6 +37,12 @@ public abstract class DBObject {
 		}
 	}
 
+	public DBObject(JCWDatabase database, DBObjectIndicesManager.DBObjectInfo objectInfo) throws IOException {
+		this.database = database;
+		this.databaseManager = database.getDatabaseManager();
+		this.databaseManager.preloadDBObject(this, objectInfo);
+	}
+
 	private void initializeDBObject() throws IOException {
 		initializeDBObjectFields();
 		initializeDBObjectProperties();
@@ -42,12 +50,12 @@ public abstract class DBObject {
 
 	private void initializeDBObjectFields() throws IOException {
 		// Declare the variables needed to get the biggest field Id
-		Field[] unorderedFields = database.getFields(this);
+		Field[] unorderedFields = databaseManager.getFields(this);
 		// Find the biggest field Id
-		int biggestFieldId = database.getBiggestFieldId(unorderedFields);
+		int biggestFieldId = databaseManager.getBiggestFieldId(unorderedFields);
 
 		// Allocate new UIDs
-		fieldUIDs = database.allocateNewUIDs(biggestFieldId + 1);
+		fieldUIDs = databaseManager.allocateNewUIDs(biggestFieldId + 1);
 
 		// Declare the other variables
 		Field[] fields = new Field[biggestFieldId + 1];
@@ -58,7 +66,7 @@ public abstract class DBObject {
 			DBField fieldAnnotation = field.getAnnotation(DBField.class);
 			int fieldId = fieldAnnotation.id();
 			DBDataType fieldType = fieldAnnotation.type();
-			database.loadField(this, field, fieldType, fieldUIDs[fieldId]);
+			databaseManager.loadField(this, field, fieldType, fieldUIDs[fieldId]);
 			fields[fieldId] = field;
 			orderedFieldTypes[fieldId] = fieldType;
 		}
@@ -68,16 +76,16 @@ public abstract class DBObject {
 
 	private void initializeDBObjectProperties() {
 		// Declare the variables needed to get the biggest property Id
-		Method[] unorderedPropertyGetters = database.getPropertyGetters(this);
+		Method[] unorderedPropertyGetters = databaseManager.getPropertyGetters(this);
-		Method[] unorderedPropertySetters = database.getPropertySetters(this);
+		Method[] unorderedPropertySetters = databaseManager.getPropertySetters(this);
 
 		// Find the biggest property Id
-		int biggestGetter = database.getBiggestPropertyGetterId(unorderedPropertyGetters);
+		int biggestGetter = databaseManager.getBiggestPropertyGetterId(unorderedPropertyGetters);
-		int biggestSetter = database.getBiggestPropertySetterId(unorderedPropertySetters);
+		int biggestSetter = databaseManager.getBiggestPropertySetterId(unorderedPropertySetters);
 		int biggestPropertyId = biggestGetter > biggestSetter ? biggestGetter : biggestSetter;
 
 		// Allocate new UIDs
-		propertyUIDs = database.allocateNewUIDs(biggestPropertyId + 1);
+		propertyUIDs = databaseManager.allocateNewUIDs(biggestPropertyId + 1);
 
 		for (Method property : unorderedPropertySetters) {
 			DBPropertySetter fieldAnnotation = property.getAnnotation(DBPropertySetter.class);
@@ -115,11 +123,6 @@ public abstract class DBObject {
 		setProperties(propertyGetters, propertySetters, propertyTypes, propertyUIDs, setterMethods, getterMethods);
 	}
 
-	public DBObject(JCWDatabase database, DBObjectIndicesManager.DBObjectInfo objectInfo) throws IOException {
-		this.database = database.getDatabaseManager();
-		this.database.preloadDBObject(this, objectInfo);
-	}
-
 	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));
@@ -141,7 +144,7 @@ public abstract class DBObject {
 		synchronized (propertiesAccessLock) {
 			if (!loadedProperties[propertyId]) {
 				long propertyUID = propertyUIDs[propertyId];
-				database.loadProperty(this, propertyId, propertyGetters[propertyId], propertyTypes[propertyId], propertyUID);
+				databaseManager.loadProperty(this, propertyId, propertyGetters[propertyId], propertyTypes[propertyId], propertyUID);
 			}
 			return (T) loadedPropertyValues[propertyId];
 		}
@@ -166,13 +169,13 @@ public abstract class DBObject {
 		try {
 			synchronized (propertiesAccessLock) {
 				synchronized (fieldsAccessLock) {
-					database.writeObjectInfo(uid, fieldUIDs, propertyUIDs);
+					databaseManager.writeObjectInfo(uid, fieldUIDs, propertyUIDs);
 				}
 			}
 			synchronized (fieldsAccessLock) {
 				for (int i = 0; i < fieldUIDs.length; i++) {
 					try {
-						database.writeObjectProperty(fieldUIDs[i], fieldTypes[i], fields[i].get(this));
+						databaseManager.writeObjectProperty(fieldUIDs[i], fieldTypes[i], fields[i].get(this));
 					} catch (IllegalAccessException e) {
 						throw new IOError(e);
 					}
@@ -180,7 +183,7 @@ public abstract class DBObject {
 			}
 			synchronized (propertiesAccessLock) {
 				for (int i = 0; i < propertyUIDs.length; i++) {
-					database.writeObjectProperty(propertyUIDs[i], propertyTypes[i], loadedPropertyValues[i]);
+					databaseManager.writeObjectProperty(propertyUIDs[i], propertyTypes[i], loadedPropertyValues[i]);
 				}
 			}
 		} catch (IOException e) {

src/main/java/org/warp/jcwdb/ann/DBObjectList.java

@@ -2,10 +2,9 @@ package org.warp.jcwdb.ann;
 
 import java.io.IOException;
 
-public class DBObjectList<T> extends DBList<T> {
+public class DBObjectList<T> extends DBArrayList<T> {
-
+	public DBObjectList(JCWDatabase database) {
-	public DBObjectList(JCWDatabase db, int maxLoadedItems) {
+		super(database);
-		super(db, maxLoadedItems);
 	}
 
 	public DBObjectList(JCWDatabase database, DBObjectIndicesManager.DBObjectInfo objectInfo) throws IOException {
@@ -13,13 +12,12 @@ public class DBObjectList<T> extends DBList<T> {
 	}
 
 	@Override
-	protected T loadObjectFromDatabase(long uid) throws IOException {
+	public T loadItem(long uid) throws IOException {
-		return database.loadObject(uid);
+		return databaseManager.loadObject(uid);
 	}
 
 	@Override
-	protected long saveObjectToDatabase(long uid, T value) throws IOException {
+	public void writeItemToDisk(long uid, T item) throws IOException {
-		database.writeObjectProperty(uid, DBDataType.OBJECT, value);
+		databaseManager.writeObjectProperty(uid, DBDataType.OBJECT, item);
-		return uid;
 	}
 }

src/main/java/org/warp/jcwdb/ann/DatabaseManager.java

@@ -1,7 +1,6 @@
 package org.warp.jcwdb.ann;
 
 import com.esotericsoftware.kryo.Kryo;
-import com.esotericsoftware.kryo.Registration;
 import com.esotericsoftware.kryo.io.Output;
 import it.unimi.dsi.fastutil.booleans.BooleanArrayList;
 import it.unimi.dsi.fastutil.bytes.ByteArrayList;
@@ -14,7 +13,6 @@ import org.apache.commons.lang3.reflect.MethodUtils;
 import org.warp.jcwdb.Cleanable;
 import org.warp.jcwdb.Cleaner;
 import org.warp.jcwdb.FileIndexManager;
-import org.warp.jcwdb.ann.exampleimpl.ClassWithList;
 
 import java.io.ByteArrayOutputStream;
 import java.io.IOError;
@@ -24,6 +22,8 @@ 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 {
 
@@ -36,9 +36,9 @@ public class DatabaseManager implements Cleanable {
 	private final Kryo kryo = new Kryo();
 	private volatile boolean closed;
 
-	DatabaseManager(JCWDatabase jcwDatabase, Path dataFile, Path metadataFile) throws IOException {
+	DatabaseManager(JCWDatabase jcwDatabase, Path dataFile, Path metadataFile, boolean registrationRequired) throws IOException {
 		this.jcwDatabase = jcwDatabase;
-		kryo.setRegistrationRequired(true);
+		kryo.setRegistrationRequired(registrationRequired);
 		registerDefaultClasses();
 		this.indices = new FileIndexManager(dataFile, metadataFile);
 		if (!indices.has(0)) {
@@ -106,6 +106,9 @@ public class DatabaseManager implements Cleanable {
 		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")
@@ -262,63 +265,70 @@ public class DatabaseManager implements Cleanable {
 		return biggestFieldId;
 	}
 
-	@SuppressWarnings("unchecked")
 	public void loadProperty(DBObject obj, int propertyId, Method property, DBDataType propertyType, long propertyUID) throws IOException {
-		switch (propertyType) {
+		loadData(propertyType, propertyUID, property::getReturnType, (data) -> obj.setLoadedProperty(propertyId, data));
-			case DATABASE_OBJECT:
-				DBObject fieldDBObjectValue = loadDBObject((Class<? extends DBObject>) property.getReturnType(), propertyUID);
-				//System.err.println("Loading prop. DBObj " + propertyUID + ":" + fieldDBObjectValue);
-				obj.setLoadedProperty(propertyId, fieldDBObjectValue);
-				break;
-			case OBJECT:
-				Object fieldObjectValue = loadObject(propertyUID);
-				//System.err.println("Loading prop. Obj " + propertyUID + ":" + fieldObjectValue);
-				obj.setLoadedProperty(propertyId, fieldObjectValue);
-				break;
-			case UID_LIST:
-				LongArrayList fieldListObjectValue = loadListObject(propertyUID);
-				//System.err.println("Loading prop. LOb " + propertyUID + ":" + fieldListObjectValue);
-				obj.setLoadedProperty(propertyId, fieldListObjectValue);
-				break;
-			case INTEGER:
-				int fieldIntValue = loadInt(propertyUID);
-				//System.err.println("Loading prop. Int " + propertyUID + ":" + fieldIntValue);
-				obj.setLoadedProperty(propertyId, fieldIntValue);
-				break;
-			default:
-				throw new NullPointerException("Unknown Field Type");
 	}
+
+	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")
-	public void loadField(DBObject obj, Field field, DBDataType fieldType, long fieldUID) throws IOException {
+	private void loadData(DBDataType propertyType, long dataUID, Supplier<Class<?>> returnType, Consumer result) throws IOException {
-		try {
+		switch (propertyType) {
-			switch (fieldType) {
 			case DATABASE_OBJECT:
-					DBObject fieldDBObjectValue = loadDBObject((Class<? extends DBObject>) field.getType(), fieldUID);
+				DBObject fieldDBObjectValue = loadDBObject((Class<? extends DBObject>) returnType.get(), dataUID);
-					//System.err.println("Loading field DBObj " + fieldUID + ":" + fieldDBObjectValue);
+				//System.err.println("Loading data DBObj " + dataUID + ":" + fieldDBObjectValue);
-					FieldUtils.writeField(field, obj, fieldDBObjectValue, true);
+				result.accept(fieldDBObjectValue);
-					break;
+				return;
 			case OBJECT:
-					Object fieldObjectValue = loadObject(fieldUID);
+				Object fieldObjectValue = loadObject(dataUID);
-					//System.err.println("Loading field Obj " + fieldUID + ":" + fieldObjectValue);
+				//System.err.println("Loading data Obj " + dataUID + ":" + fieldObjectValue);
-					FieldUtils.writeField(field, obj, fieldObjectValue, true);
+				result.accept(fieldObjectValue);
-					break;
+				return;
 			case UID_LIST:
-					LongArrayList fieldListObjectValue = loadListObject(fieldUID);
+				LongArrayList fieldListObjectValue = loadListObject(dataUID);
-					//System.err.println("Loading field LOb " + fieldUID + ":" + fieldObjectValue);
+				//System.err.println("Loading data LOb " + dataUID + ":" + fieldListObjectValue);
-					FieldUtils.writeField(field, obj, fieldListObjectValue, true);
+				result.accept(fieldListObjectValue);
-					break;
+				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(fieldUID);
+				int fieldIntValue = loadInt(dataUID);
-					//System.err.println("Loading field Int " + fieldUID + ":" + fieldIntValue);
+				//System.err.println("Loading data Int " + dataUID + ":" + fieldIntValue);
-					FieldUtils.writeField(field, obj, fieldIntValue, true);
+				result.accept(fieldIntValue);
-					break;
+				return;
+			case LONG:
+				long fieldLongValue = loadLong(dataUID);
+				//System.err.println("Loading data Lng " + dataUID + ":" + fieldLongValue);
+				result.accept(fieldLongValue);
+				return;
 			default:
-					throw new NullPointerException("Unknown Field Type");
+				throw new NullPointerException("Unknown data type");
-			}
-		} catch (IllegalAccessException e) {
-			throw new RuntimeException(e);
 		}
 	}
 
@@ -345,7 +355,6 @@ public class DatabaseManager implements Cleanable {
 		return indices.get(uid, (i, size) -> size == 0 ? null : (T) kryo.readClassAndObject(i));
 	}
 
-	@SuppressWarnings("unchecked")
 	private LongArrayList loadListObject(long uid) throws IOException {
 		return indices.get(uid, (i, size) -> {
 			if (size == 0) return  null;
@@ -358,10 +367,31 @@ public class DatabaseManager implements Cleanable {
 		});
 	}
 
+	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
@@ -390,31 +420,58 @@ public class DatabaseManager implements Cleanable {
 
 	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((int) loadedPropertyValue));
+				indices.set(uid, Integer.BYTES, (o) -> o.writeInt(loadedPropertyValue == null ? 0 : (int) loadedPropertyValue));
-				//System.err.println("Saving prop. Int " + uid + ":" + 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 prop. Obj " + uid + ":" + 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);
+					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 prop. LOb " + uid + ":" + loadedPropertyValue);
+					//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 prop. DBObj " + uid + ":" + loadedPropertyValue);
+				//System.err.println("Saving data DBObj " + uid + ":" + loadedPropertyValue);
 				if (loadedPropertyValue == null) {
 					writeObjectInfoNull(uid);
 				} else {

src/main/java/org/warp/jcwdb/ann/JCWDatabase.java

@@ -6,8 +6,8 @@ import java.nio.file.Path;
 public class JCWDatabase {
 	private final DatabaseManager database;
 
-	public JCWDatabase(Path dataFile, Path metadataFile) throws IOException {
+	public JCWDatabase(Path dataFile, Path metadataFile, boolean registrationRequired) throws IOException {
-		this.database = new DatabaseManager(this, dataFile, metadataFile);
+		this.database = new DatabaseManager(this, dataFile, metadataFile, registrationRequired);
 	}
 
 	public <T extends DBObject> T loadRoot(Class<T> rootClass) {
@@ -23,6 +23,9 @@ public class JCWDatabase {
 	}
 
 	public void registerClass(Class<?> clazz, int id) {
+		if (id < 0) {
+			throw new IllegalArgumentException();
+		}
 		database.registerClass(clazz, id);
 	}
 

src/main/java/org/warp/jcwdb/ann/exampleimpl/Class1.java

@@ -1,68 +0,0 @@
-package org.warp.jcwdb.ann.exampleimpl;
-
-import org.warp.jcwdb.ann.*;
-
-import java.io.IOException;
-import java.util.StringJoiner;
-
-public class Class1 extends DBObject {
-
-	public Class1(JCWDatabase database) {
-		super(database);
-	}
-
-	public Class1(JCWDatabase database, DBObjectIndicesManager.DBObjectInfo objectInfo) throws IOException {
-		super(database,  objectInfo);
-	}
-
-	@DBField(id = 0, type = DBDataType.OBJECT)
-	public String value1;
-
-	@DBField(id = 1, type = DBDataType.INTEGER)
-	public int value2;
-
-	@DBField(id = 2, type = DBDataType.INTEGER)
-	public int value3;
-
-	@DBPropertyGetter(id = 0, type = DBDataType.OBJECT)
-	public String getValue3() {
-		return getProperty();
-	}
-
-	@DBPropertySetter(id = 0, type = DBDataType.OBJECT)
-	public void setValue3(String value) {
-		setProperty(value);
-	}
-
-	@DBPropertyGetter(id = 1, type = DBDataType.DATABASE_OBJECT)
-	public Class1 getValue4() {
-		return getProperty();
-	}
-
-	@DBPropertySetter(id = 1, type = DBDataType.DATABASE_OBJECT)
-	public void setValue4(Class1 value) {
-		setProperty(value);
-	}
-
-	@DBPropertyGetter(id = 2, type = DBDataType.OBJECT)
-	public String getValueStr() {
-		return getProperty();
-	}
-
-	@DBPropertySetter(id = 2, type = DBDataType.OBJECT)
-	public void setValueStr(String value) {
-		setProperty(value);
-	}
-
-	@Override
-	public String toString() {
-		return new StringJoiner(", ", Class1.class.getSimpleName() + "[", "]")
-						.add("value1='" + value1 + "'")
-						.add("value2=" + value2)
-						.add("value3=" + value3)
-						.add("getValue3=" + getValue3())
-						.add("getValue4=" + getValue4())
-						.add("getValueStr=" + getValueStr())
-						.toString();
-	}
-}

src/main/java/org/warp/jcwdb/ann/exampleimpl/Class2.java

@@ -1,40 +0,0 @@
-package org.warp.jcwdb.ann.exampleimpl;
-
-import org.warp.jcwdb.ann.*;
-
-import java.io.IOException;
-import java.util.StringJoiner;
-
-public class Class2 extends Class1 {
-
-	//@DBField(id = 3, type = DBDataType.DATABASE_OBJECT)
-	//public DBDBObjectList<Class1> value4;
-
-	@DBField(id = 3, type = DBDataType.DATABASE_OBJECT)
-	public Class1 value4;
-
-	@DBField(id = 4, type = DBDataType.INTEGER)
-	public int value5;
-
-	public Class2(JCWDatabase database) {
-		super(database);
-	}
-
-	public Class2(JCWDatabase database, DBObjectIndicesManager.DBObjectInfo objectInfo) throws IOException {
-		super(database, objectInfo);
-	}
-
-	@Override
-	public String toString() {
-		return new StringJoiner(", ", Class1.class.getSimpleName() + "[", "]")
-						.add("value1='" + value1 + "'")
-						.add("value2=" + value2)
-						.add("value3=" + value3)
-						.add("value4=" + value4)
-						.add("value5=" + value5)
-						.add("getValue3=" + getValue3())
-						.add("getValue4=" + getValue4())
-						.add("getValueStr=" + getValueStr())
-						.toString();
-	}
-}

src/main/java/org/warp/jcwdb/ann/exampleimpl/ClassWithList.java

@@ -1,48 +0,0 @@
-package org.warp.jcwdb.ann.exampleimpl;
-
-import org.warp.jcwdb.ann.*;
-
-import java.io.IOError;
-import java.io.IOException;
-import java.util.StringJoiner;
-
-public class ClassWithList extends DBObject {
-
-	public ClassWithList(JCWDatabase database) {
-		super(database);
-	}
-
-	public ClassWithList(JCWDatabase database, DBObjectIndicesManager.DBObjectInfo objectInfo) throws IOException {
-		super(database, objectInfo);
-	}
-
-	@DBField(id = 0, type = DBDataType.DATABASE_OBJECT)
-	public DBDBObjectList<IntClass> valueList;
-
-
-	@DBPropertySetter(id = 0, type = DBDataType.DATABASE_OBJECT)
-	public void setList(DBDBObjectList<IntClass> value) {
-		setProperty(value);
-	}
-
-	@DBPropertyGetter(id = 0, type = DBDataType.DATABASE_OBJECT)
-	public DBDBObjectList<IntClass> getList() {
-		return getProperty();
-	}
-
-	@Override
-	public String toString() {
-		DBDBObjectList<IntClass> list;
-		boolean listErrored = false;
-		try {
-			list = getList();
-		} catch (IOError | Exception ex) {
-			list = null;
-			listErrored = true;
-		}
-		return new StringJoiner(", ", ClassWithList.class.getSimpleName() + "[", "]")
-						.add("valueList=" + valueList)
-						.add("getList=" + (listErrored ? "{error}" : (list == null ? list : list.size() < 100 ? list : "[" + list.size() + " items])")))
-						.toString();
-	}
-}

src/main/java/org/warp/jcwdb/ann/exampleimpl/IntClass.java

@@ -1,27 +0,0 @@
-package org.warp.jcwdb.ann.exampleimpl;
-
-import org.warp.jcwdb.ann.*;
-
-import java.io.IOException;
-import java.util.StringJoiner;
-
-public class IntClass extends DBObject {
-
-	public IntClass(JCWDatabase database) {
-		super(database);
-	}
-
-	public IntClass(JCWDatabase database, DBObjectIndicesManager.DBObjectInfo objectInfo) throws IOException {
-		super(database, objectInfo);
-	}
-
-	@DBField(id = 0, type = DBDataType.INTEGER)
-	public int value;
-
-	@Override
-	public String toString() {
-		return new StringJoiner(", ", IntClass.class.getSimpleName() + "[", "]")
-						.add("value=" + value)
-						.toString();
-	}
-}

src/main/java/org/warp/jcwdb/ann/exampleimpl/Main.java

@@ -1,65 +0,0 @@
-package org.warp.jcwdb.ann.exampleimpl;
-
-import org.warp.jcwdb.ann.DBDBObjectList;
-import org.warp.jcwdb.ann.JCWDatabase;
-
-import java.io.IOException;
-import java.nio.file.Paths;
-
-public class Main {
-
-	public static void main(String[] args) throws IOException {
-		long t0 = System.currentTimeMillis();
-		JCWDatabase db = new JCWDatabase(Paths.get("N:\\TimedTemp\\database_temp.db"), Paths.get("N:\\TimedTemp\\database_temp.idx"));
-		db.registerClass(Class1.class, 0);
-		db.registerClass(Class2.class, 1);
-		Class2 class1 = db.loadRoot(Class2.class);
-		long t1 = System.currentTimeMillis();
-		System.err.println("Loading took " + (t1-t0)/1000d + " seconds");
-		t0 = System.currentTimeMillis();
-		System.err.println("[MAIN] class1="+class1);
-		class1.value1 = "ciaoooooooooooooooooooooo";
-		class1.value2 =  3;
-		class1.value5 = 5;
-		System.err.println("[MAIN] value3="+class1.getValue3());
-		class1.setValue3("Ciao 3");
-		System.err.println("[MAIN] value3="+class1.getValue3());
-
-		System.err.println("[MAIN] propString="+class1.getValueStr());
-		class1.setValueStr("Ciao String");
-		System.err.println("[MAIN] propString="+class1.getValueStr());
-
-		System.err.println("[MAIN] getValue4="+class1.getValue4());
-		t1 = System.currentTimeMillis();
-		System.err.println("Post-loading took " + (t1-t0)/1000d + " seconds");
-		t0 = System.currentTimeMillis();
-		for (int i = 0; i < 200; i++) {
-			Class1 nested;
-			if ((nested = class1.getValue4()) == null) {
-				//System.err.println("[MAIN] Created nested class");
-				class1.setValue4(nested = new Class1(db));
-			}
-			nested.getValue3();
-			//System.err.println("[MAIN] value4="+class1.getValue4());
-			//System.err.println("[MAIN] nested value3="+nested.getValue3());
-			nested.setValue3("Ciao nested 3");
-			//System.err.println("[MAIN] nested value3=" + class1.getValue4().getValue3());
-		}
-		t1 = System.currentTimeMillis();
-		System.err.println("Took " + (t1-t0)/1000d + " seconds");
-
-
-		/*
-		if (class1.value4 == null) {
-			class1.value4 = new DBDBObjectList<>(db, 100, Class1.class);
-		}
-		for (int i = 0; i < 15; i++) {
-			Class1 c1 = new Class1(db);
-			c1.value1 = "" + i;
-			c1.value2 = i;
-			c1.setValueStr("" + i);
-			class1.value4.add(c1);
-		}*/
-		class1.value4 = new Class1(db);
-	}
-}

src/main/java/org/warp/jcwdb/ann/exampleimpl/MainSingleClass.java

@@ -1,52 +0,0 @@
-package org.warp.jcwdb.ann.exampleimpl;
-
-import org.warp.jcwdb.ann.DBDBObjectList;
-import org.warp.jcwdb.ann.DBList;
-import org.warp.jcwdb.ann.JCWDatabase;
-
-import java.io.IOException;
-import java.nio.file.Files;
-import java.nio.file.Paths;
-
-public class MainSingleClass {
-
-	public static void main(String[] args) throws IOException {
-		long t0 = System.currentTimeMillis();
-		Files.deleteIfExists(Paths.get("N:\\TimedTemp\\database_t.db"));
-		Files.deleteIfExists(Paths.get("N:\\TimedTemp\\database_t.idx"));
-		for (int i = 0; i < 18; i++) {
-			doIt();
-		}
-	}
-
-	public static void doIt() throws IOException {
-		System.err.println("doIt");
-		JCWDatabase db = new JCWDatabase(Paths.get("N:\\TimedTemp\\database_t.db"), Paths.get("N:\\TimedTemp\\database_t.idx"));
-		db.registerClass(ClassWithList.class, 0);
-		db.registerClass(IntClass.class, 1);
-		ClassWithList classWithList = db.loadRoot(ClassWithList.class);
-		System.err.println("[MAIN init] classWithList="+classWithList);
-
-		if (classWithList.valueList == null) {
-			System.out.println("Get list was null");
-			classWithList.valueList = new DBDBObjectList<>(db, IntClass.class, 10000);
-		}
-		DBDBObjectList<IntClass> list = classWithList.valueList;
-
-		for (int i = 0; i < 1000000; i++) {
-			IntClass intClass = new IntClass(db);
-			intClass.value = i+0xFF00;
-			//System.err.println("[WRITE]" + intClass.value);
-			list.add(intClass);
-		}
-
-		DBList.DBListIterator<IntClass> it = list.iterator();
-		while (it.hasNext()) {
-			IntClass intClass = it.next();
-			//System.err.println("[READ]" + intClass.value);
-		}
-
-		System.err.println("[MAIN end.] singleClass="+classWithList);
-		db.close();
-	}
-}

src/main/java/org/warp/jcwdb/ann/exampleimpl/SingleClass.java

@@ -1,68 +0,0 @@
-package org.warp.jcwdb.ann.exampleimpl;
-
-import org.warp.jcwdb.ann.*;
-
-import java.io.IOException;
-import java.util.StringJoiner;
-
-public class SingleClass extends DBObject {
-
-	@DBField(id = 0, type = DBDataType.INTEGER)
-	public int valueInt;
-
-	@DBField(id = 1, type = DBDataType.OBJECT)
-	public String valueObj;
-
-	@DBField(id = 2, type = DBDataType.DATABASE_OBJECT)
-	public IntClass valueDB;
-
-	@DBPropertySetter(id = 0, type = DBDataType.INTEGER)
-	public void setInt(int value) {
-		setProperty(value);
-	}
-
-	@DBPropertySetter(id = 1, type = DBDataType.OBJECT)
-	public void setObj(String value) {
-		setProperty(value);
-	}
-
-	@DBPropertySetter(id = 2, type = DBDataType.DATABASE_OBJECT)
-	public void setDB(IntClass value) {
-		setProperty(value);
-	}
-
-	@DBPropertyGetter(id = 0, type = DBDataType.INTEGER)
-	public int getInt() {
-		return getProperty();
-	}
-
-	@DBPropertyGetter(id = 1, type = DBDataType.OBJECT)
-	public String getObj() {
-		return getProperty();
-	}
-
-	@DBPropertyGetter(id = 2, type = DBDataType.DATABASE_OBJECT)
-	public IntClass getDB() {
-		return getProperty();
-	}
-
-	public SingleClass(JCWDatabase database) {
-		super(database);
-	}
-
-	public SingleClass(JCWDatabase database, DBObjectIndicesManager.DBObjectInfo objectInfo) throws IOException {
-		super(database, objectInfo);
-	}
-
-	@Override
-	public String toString() {
-		return new StringJoiner(", ", SingleClass.class.getSimpleName() + "[", "]")
-						.add("valueInt=" + valueInt)
-						.add("valueObj='" + valueObj + "'")
-						.add("valueDB=" + valueDB)
-						.add("getInt=" + getInt())
-						.add("getObj='" + getObj() + "'")
-						.add("getDB=" + getDB())
-						.toString();
-	}
-}

src/test/java/org/warp/jcwdb/AppTest.java

@@ -1,71 +0,0 @@
-package org.warp.jcwdb;
-
-import org.junit.Test;
-import org.warp.jcwdb.ann.JCWDatabase;
-import org.warp.jcwdb.ann.exampleimpl.IntClass;
-import org.warp.jcwdb.ann.exampleimpl.SingleClass;
-
-import java.io.IOException;
-import java.nio.file.Files;
-import java.nio.file.Paths;
-
-import static org.junit.Assert.assertTrue;
-
-/**
- * Unit test for simple App.
- */
-public class AppTest {
-	/**
-	 * Rigorous Test :-)
-	 */
-	@Test
-	public void shouldAnswerWithTrue() {
-		assertTrue(true);
-	}
-
-	@Test
-	public void simpleClassTest() throws IOException {
-		long t0 = System.currentTimeMillis();
-		Files.deleteIfExists(Paths.get("N:\\TimedTemp\\database_s.db"));
-		Files.deleteIfExists(Paths.get("N:\\TimedTemp\\database_s.idx"));
-		for (int i = 0; i < 3; i++) {
-			doSingleClassTest();
-		}
-	}
-
-	public static void doSingleClassTest() throws IOException {
-		System.err.println("doSingleClassTest");
-		JCWDatabase db = new JCWDatabase(Paths.get("N:\\TimedTemp\\database_s.db"), Paths.get("N:\\TimedTemp\\database_s.idx"));
-		db.registerClass(SingleClass.class, 0);
-		db.registerClass(IntClass.class, 1);
-		SingleClass singleClass = db.loadRoot(SingleClass.class);
-		System.err.println("[MAIN init] singleClass="+singleClass);
-
-		singleClass.getInt();
-		singleClass.setInt((int) (Math.random() * 100));
-
-		singleClass.getObj();
-		singleClass.setObj(String.valueOf(Math.random() * 100));
-
-		if (singleClass.getDB() == null) {
-			System.out.println("Get db was null");
-			singleClass.setDB(new IntClass(db));
-		}
-		IntClass intClass = singleClass.getDB();
-		intClass.value = (int) (Math.random() * 100);
-
-		singleClass.valueInt = (int) (Math.random() * 100);
-
-		singleClass.valueObj = String.valueOf(Math.random() * 100);
-
-		if (singleClass.valueDB == null) {
-			System.out.println("Value db was null");
-			singleClass.valueDB = new IntClass(db);
-		}
-		singleClass.valueDB.value = (int) (Math.random() * 100);
-
-
-		System.err.println("[MAIN end.] singleClass="+singleClass);
-		db.close();
-	}
-}

src/test/java/org/warp/jcwdb/FileAllocatorTest.java

@@ -1,51 +0,0 @@
-package org.warp.jcwdb;
-
-import org.junit.Test;
-
-import java.io.IOException;
-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 static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertTrue;
-
-public class FileAllocatorTest {
-
-	@Test
-	public void shouldAllocateAtZero() throws IOException {
-		Path tempFile = Files.createTempFile("", "");
-		SeekableByteChannel byteCh = Files.newByteChannel(tempFile);
-		FileAllocator allocator = new FileAllocator(byteCh);
-		long offset1 = allocator.allocate(512);
-		assertEquals(0, offset1);
-	}
-
-	@Test
-	public void shouldAllocateAt512() throws IOException {
-		Path tempFile = Files.createTempFile("", "");
-		SeekableByteChannel byteCh = Files.newByteChannel(tempFile, StandardOpenOption.WRITE);
-		byteCh.write(ByteBuffer.wrap(new byte[512]));
-		FileAllocator allocator = new FileAllocator(byteCh);
-		long offset1 = allocator.allocate(512);
-		assertEquals(512, offset1);
-	}
-
-	@Test
-	public void shouldAllocateUnusedSpace() throws IOException {
-		Path tempFile = Files.createTempFile("", "");
-		SeekableByteChannel byteCh = Files.newByteChannel(tempFile, StandardOpenOption.WRITE);
-		FileAllocator allocator = new FileAllocator(byteCh);
-		long offset1 = allocator.allocate(512);
-		allocator.markFree(offset1, 512);
-		long offset2 = allocator.allocate(128);
-		long offset3 = allocator.allocate(512-128);
-		long offset4 = allocator.allocate(128);
-		assertEquals(0, offset2);
-		assertEquals(128, offset3);
-		assertEquals(512, offset4);
-	}
-
-}

src/test/java/org/warp/jcwdb/tests/DBDBObjectListTests.java

@@ -0,0 +1,77 @@
+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.TestUtils;
+
+import java.io.IOException;
+
+import static org.junit.Assert.*;
+
+public class DBDBObjectListTests {
+	private TestUtils.WrappedDb db;
+	private RootWithList root;
+
+	@Before
+	public void setUp() throws Exception {
+		db = TestUtils.wrapDb().create((db) -> {
+			db.get().registerClass(TestUtils.class, 0);
+			db.get().registerClass(TestUtils.RootClass.class, 1);
+			db.get().registerClass(Class.class, 2);
+			root = db.get().loadRoot(RootWithList.class);
+		});
+		root.list = new DBDBObjectList<>(db.get(), TestUtils.RootClass.class);
+		for (int i = 0; i < 100; i++) {
+			TestUtils.RootClass rootClass = new TestUtils.RootClass(db.get());
+			db.setRootClassValues(rootClass);
+			root.list.add(rootClass);
+		}
+		db.closeAndReopen();
+		for (int i = 0; i < 100; i++) {
+			TestUtils.RootClass rootClass = new TestUtils.RootClass(db.get());
+			db.setRootClassValues(rootClass);
+			root.list.add(rootClass);
+		}
+	}
+
+	@Test
+	public void shouldMatchList() {
+		checkEmptyList();
+		assertEquals(200, root.list.size());
+		for (int i = 0; i < 200; i++) {
+			db.testRootClassValues(root.list.get(i));
+		}
+	}
+
+	private void checkEmptyList() {
+		DBObjectList<String> list = new DBObjectList<>(db.get());
+		assertEquals(null, list.getLast());
+		assertEquals(0, list.size());
+		assertTrue(list.isEmpty());
+		list.add("1");
+		assertEquals(1, list.size());
+		assertEquals("1", list.getLast());
+		assertFalse(list.isEmpty());
+	}
+
+	@After
+	public void tearDown() throws Exception {
+		db.delete();
+	}
+
+	public static class RootWithList extends DBObject {
+
+		public RootWithList(JCWDatabase database) {
+			super(database);
+		}
+
+		public RootWithList(JCWDatabase database, DBObjectIndicesManager.DBObjectInfo objectInfo) throws IOException {
+			super(database, objectInfo);
+		}
+
+		@DBField(id = 0, type = DBDataType.DATABASE_OBJECT)
+		public DBDBObjectList<TestUtils.RootClass> list;
+	}
+}

src/test/java/org/warp/jcwdb/tests/DBMultipleDBObjects.java

@@ -0,0 +1,80 @@
+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.TestUtils;
+
+import java.io.IOException;
+
+public class DBMultipleDBObjects {
+	private TestUtils.WrappedDb db;
+	private RootTwoClasses root;
+
+	@Before
+	public void setUp() throws Exception {
+		db = TestUtils.wrapDb().create((db) -> {
+			root = db.get().loadRoot(RootTwoClasses.class);
+		});
+		root.class1 = new TestUtils.RootClass(db.get());
+		db.setRootClassValues(root.class1);
+		root.class2 = new TestUtils.RootClass(db.get());
+		db.setRootClassValues(root.class2);
+		root.setClass3(new TestUtils.RootClass(db.get()));
+		db.setRootClassValues(root.getClass3());
+		root.setClass4(new TestUtils.RootClass(db.get()));
+		db.setRootClassValues(root.getClass4());
+		db.closeAndReopen();
+	}
+
+	@Test
+	public void shouldMatchMultipleObjects() {
+		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 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;
+
+		@DBPropertyGetter(id = 0, type = DBDataType.DATABASE_OBJECT)
+		public TestUtils.RootClass getClass3() {
+			return getProperty();
+		}
+
+		@DBPropertySetter(id = 0, type = DBDataType.DATABASE_OBJECT)
+		public void setClass3(TestUtils.RootClass value) {
+			setProperty(value);
+		}
+
+		@DBPropertyGetter(id = 1, type = DBDataType.DATABASE_OBJECT)
+		public TestUtils.RootClass getClass4() {
+			return getProperty();
+		}
+
+		@DBPropertySetter(id = 1, type = DBDataType.DATABASE_OBJECT)
+		public void setClass4(TestUtils.RootClass value) {
+			setProperty(value);
+		}
+	}
+}

src/test/java/org/warp/jcwdb/tests/DBNestedDBObjects.java

@@ -0,0 +1,69 @@
+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 {
+	private TestUtils.WrappedDb db;
+	private NestedClass root;
+
+	@Before
+	public void setUp() throws Exception {
+		db = TestUtils.wrapDb().create((db) -> {
+			root = db.get().loadRoot(NestedClass.class);
+		});
+		root.child = new NestedClass(db.get());
+		root.child.child = new NestedClass(db.get());
+		root.child.child.child = new NestedClass(db.get());
+		root.child.child.child.child = new NestedClass(db.get());
+		root.child.child.child.child.isFinal = true;
+
+		NestedClass nestedClass0 = new NestedClass(db.get());
+		nestedClass0.isFinal = true;
+		NestedClass nestedClass1 = new NestedClass(db.get());
+		nestedClass1.setValue(nestedClass0);
+		NestedClass nestedClass2 = new NestedClass(db.get());
+		nestedClass2.setValue(nestedClass1);
+		NestedClass nestedClass3 = new NestedClass(db.get());
+		nestedClass3.setValue(nestedClass2);
+		NestedClass nestedClass4 = new NestedClass(db.get());
+		nestedClass4.setValue(nestedClass3);
+		root.setValue(nestedClass4);
+
+		db.closeAndReopen();
+	}
+
+	@Test
+	public void shouldMatchNestedObjects() {
+		assertNotNull(root);
+		assertNotNull(root.child);
+		assertNotNull(root.child.child);
+		assertNotNull(root.child.child.child);
+		assertNotNull(root.child.child.child.child);
+		assertTrue(root.child.child.child.child.isFinal);
+		assertNotNull(root.getValue());
+		assertFalse(root.isFinal);
+		assertNotNull(root.getValue().getValue());
+		assertFalse(root.getValue().isFinal);
+		assertNotNull(root.getValue().getValue().getValue());
+		assertFalse(root.getValue().getValue().isFinal);
+		assertNotNull(root.getValue().getValue().getValue().getValue());
+		assertFalse(root.getValue().getValue().getValue().isFinal);
+		assertNotNull(root.getValue().getValue().getValue().getValue().getValue());
+		assertFalse(root.getValue().getValue().getValue().getValue().isFinal);
+		assertTrue(root.getValue().getValue().getValue().getValue().getValue().isFinal);
+	}
+
+	@After
+	public void tearDown() throws Exception {
+		db.delete();
+	}
+}

src/test/java/org/warp/jcwdb/tests/DBRootCreation.java

@@ -0,0 +1,48 @@
+package org.warp.jcwdb.tests;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+import org.warp.jcwdb.ann.DBObject;
+import org.warp.jcwdb.ann.DBObjectIndicesManager;
+import org.warp.jcwdb.ann.JCWDatabase;
+import org.warp.jcwdb.utils.TestUtils;
+
+import java.io.IOException;
+
+import static org.junit.Assert.*;
+
+public class DBRootCreation {
+	private TestUtils.WrappedDb db;
+
+	@Before
+	public void setUp() throws Exception {
+		db = TestUtils.wrapDb().create();
+	}
+
+	@Test
+	public void shouldCreateRoot() {
+		RootClass root = db.get().loadRoot(RootClass.class);
+		assertTrue(root.test());
+	}
+
+	@After
+	public void tearDown() throws Exception {
+		db.delete();
+	}
+
+	public static class RootClass extends DBObject {
+
+		public RootClass(JCWDatabase database) {
+			super(database);
+		}
+
+		public RootClass(JCWDatabase database, DBObjectIndicesManager.DBObjectInfo objectInfo) throws IOException {
+			super(database, objectInfo);
+		}
+
+		public boolean test() {
+			return true;
+		}
+	}
+}

src/test/java/org/warp/jcwdb/tests/DBRootFields.java

@@ -0,0 +1,30 @@
+package org.warp.jcwdb.tests;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+import org.warp.jcwdb.utils.TestUtils;
+
+public class DBRootFields {
+	private TestUtils.WrappedDb db;
+	private TestUtils.RootClass root;
+
+	@Before
+	public void setUp() throws Exception {
+		db = TestUtils.wrapDb().create((db) -> {
+			root = db.get().loadRoot(TestUtils.RootClass.class);
+		});
+		db.setRootClassFields(root);
+		db.closeAndReopen();
+	}
+
+	@Test
+	public void shouldMatchAllFields() {
+		db.testRootClassFields(root);
+	}
+
+	@After
+	public void tearDown() throws Exception {
+		db.delete();
+	}
+}

src/test/java/org/warp/jcwdb/tests/DBRootProperties.java

@@ -0,0 +1,30 @@
+package org.warp.jcwdb.tests;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+import org.warp.jcwdb.utils.TestUtils;
+
+public class DBRootProperties {
+	private TestUtils.WrappedDb db;
+	private TestUtils.RootClass root;
+
+	@Before
+	public void setUp() throws Exception {
+		db = TestUtils.wrapDb().create((db) -> {
+			root = db.get().loadRoot(TestUtils.RootClass.class);
+		});
+		db.setRootClassProperties(root);
+		db.closeAndReopen();
+	}
+
+	@Test
+	public void shouldMatchAllProperties() {
+		db.testRootClassProperties(root);
+	}
+
+	@After
+	public void tearDown() throws Exception {
+		db.delete();
+	}
+}

src/test/java/org/warp/jcwdb/utils/NestedClass.java

@@ -0,0 +1,32 @@
+package org.warp.jcwdb.utils;
+
+import org.warp.jcwdb.ann.*;
+
+import java.io.IOException;
+
+public class NestedClass extends DBObject {
+
+	@DBField(id = 0, type = DBDataType.BOOLEAN)
+	public boolean isFinal;
+
+	@DBField(id = 1, type = DBDataType.DATABASE_OBJECT)
+	public NestedClass child;
+
+	@DBPropertySetter(id = 0, type = DBDataType.DATABASE_OBJECT)
+	public void setValue(NestedClass value) {
+		setProperty(value);
+	}
+
+	@DBPropertyGetter(id = 0, type = DBDataType.DATABASE_OBJECT)
+	public NestedClass getValue() {
+		return getProperty();
+	}
+
+	public NestedClass(JCWDatabase database) {
+		super(database);
+	}
+
+	public NestedClass(JCWDatabase database, DBObjectIndicesManager.DBObjectInfo objectInfo) throws IOException {
+		super(database, objectInfo);
+	}
+}

src/test/java/org/warp/jcwdb/utils/SimplestClass.java

@@ -0,0 +1,20 @@
+package org.warp.jcwdb.utils;
+
+import org.warp.jcwdb.ann.*;
+
+import java.io.IOException;
+
+public class SimplestClass extends DBObject {
+
+	@DBField(id = 0, type = DBDataType.BOOLEAN)
+	public boolean field1;
+
+	public SimplestClass(JCWDatabase database) {
+		super(database);
+		field1 = true;
+	}
+
+	public SimplestClass(JCWDatabase database, DBObjectIndicesManager.DBObjectInfo objectInfo) throws IOException {
+		super(database, objectInfo);
+	}
+}

src/test/java/org/warp/jcwdb/utils/TestUtils.java

@@ -0,0 +1,377 @@
+package org.warp.jcwdb.utils;
+
+import it.unimi.dsi.fastutil.longs.LongArrayList;
+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 java.util.function.Consumer;
+
+import static org.junit.Assert.*;
+import static org.junit.Assert.assertEquals;
+
+public class TestUtils {
+	public static WrappedDb wrapDb() {
+		return new WrappedDb();
+	}
+
+	public static class WrappedDb {
+
+		private JCWDatabase db;
+		private Path tempDir;
+		private Runnable r;
+
+		private WrappedDb() {
+
+		}
+
+		public WrappedDb create() throws IOException {
+			tempDir = Files.createTempDirectory("tests-");
+			db = openDatabase();
+			if (r != null) {
+				r.run();
+			}
+			return this;
+		}
+
+		public WrappedDb create(Consumer<TestUtils.WrappedDb> r) throws IOException {
+			this.r = () -> r.accept(WrappedDb.this);
+			this.create();
+			return this;
+		}
+
+		private JCWDatabase openDatabase() throws IOException {
+			return new JCWDatabase(tempDir.resolve(Paths.get("data.db")), tempDir.resolve(Paths.get("indices.idx")), true);
+		}
+
+		public void delete() throws IOException {
+			db.close();
+			deleteDir(tempDir);
+		}
+
+		public JCWDatabase 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) {
+			setRootClassFields(root);
+			setRootClassProperties(root);
+		}
+
+		public void setRootClassFields(RootClass root) {
+			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 SimplestClass(db);
+			root.field9.field1 = true;
+
+		}
+
+		public void setRootClassProperties(RootClass root) {
+			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);
+			SimplestClass simplestClass9 = new SimplestClass(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(Runnable r) {
+			this.r = r;
+		}
+	}
+
+	public static class RootClass extends DBObject {
+
+		@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.UID_LIST)
+		public LongArrayList field8;
+
+		@DBField(id = 8, type = DBDataType.DATABASE_OBJECT)
+		public SimplestClass field9;
+
+		@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.UID_LIST)
+		public LongArrayList get8() {
+			return getProperty();
+		}
+
+		@DBPropertyGetter(id = 8, type = DBDataType.DATABASE_OBJECT)
+		public SimplestClass 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.UID_LIST)
+		public void set8(LongArrayList val) {
+			setProperty(val);
+		}
+
+		@DBPropertySetter(id = 8, type = DBDataType.DATABASE_OBJECT)
+		public void set9(SimplestClass val) {
+			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;
+		}
+	}
+}