andreacavalli/CavalliumDBEngine
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Update Example.java, LLDatabaseConnection.java, and 4 more files...

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This commit is contained in:
Andrea Cavalli 2021-01-31 12:43:28 +01:00
parent da0ba7d6bb
commit 345bc81252
6 changed files with 84 additions and 42 deletions
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17
src/example/java/it.cavallium.dbengine.client/Example.java Normal file
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@ -0,0 +1,17 @@
package it.cavallium.dbengine.client;
import it.cavallium.dbengine.database.Column;
import it.cavallium.dbengine.database.disk.LLLocalDatabaseConnection;
import java.nio.file.Path;
import java.util.List;
public class Example {
public static void main(String[] args) {
System.out.println("Test");
new LLLocalDatabaseConnection(Path.of("/tmp/"), true)
.connect()
.flatMap(conn -> conn.getDatabase("testdb", List.of(Column.hashMap("testmap")), false))
.block();
}
}

9
src/main/java/it/cavallium/dbengine/database/LLDatabaseConnection.java
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@ -1,23 +1,22 @@
package it.cavallium.dbengine.database;
import it.cavallium.dbengine.database.analyzer.TextFieldsAnalyzer;
import java.io.IOException;
import java.time.Duration;
import java.util.List;
import reactor.core.publisher.Mono;
public interface LLDatabaseConnection {
Mono<Void> connect();
Mono<? extends LLDatabaseConnection> connect();
LLKeyValueDatabase getDatabase(String name, List<Column> columns, boolean lowMemory) throws IOException;
Mono<? extends LLKeyValueDatabase> getDatabase(String name, List<Column> columns, boolean lowMemory);
LLLuceneIndex getLuceneIndex(String name,
Mono<? extends LLLuceneIndex> getLuceneIndex(String name,
int instancesCount,
TextFieldsAnalyzer textFieldsAnalyzer,
Duration queryRefreshDebounceTime,
Duration commitDebounceTime,
boolean lowMemory) throws IOException;
boolean lowMemory);
Mono<Void> disconnect();
}

21
src/main/java/it/cavallium/dbengine/database/collections/SubStageGetterMapDeep.java
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@ -7,24 +7,35 @@ import org.jetbrains.annotations.Nullable;
import reactor.core.publisher.Flux;
import reactor.core.publisher.Mono;
public class SubStageGetterMapDeep<U, US extends DatabaseStage<U>> implements
SubStageGetter<Map<byte[], U>, DatabaseStageEntry<Map<byte[], U>>> {
public class SubStageGetterMapDeep<T, U, US extends DatabaseStage<U>> implements
SubStageGetter<Map<T, U>, DatabaseStageEntry<Map<T, U>>> {
private final SubStageGetter<U, US> subStageGetter;
private final FixedLengthSerializer<T> keySerializer;
private final int keyLength;
private final int keyExtLength;
public SubStageGetterMapDeep(SubStageGetter<U, US> subStageGetter, int keyLength, int keyExtLength) {
public SubStageGetterMapDeep(SubStageGetter<U, US> subStageGetter,
FixedLengthSerializer<T> keySerializer,
int keyLength,
int keyExtLength) {
this.subStageGetter = subStageGetter;
this.keySerializer = keySerializer;
this.keyLength = keyLength;
this.keyExtLength = keyExtLength;
}
@Override
public Mono<DatabaseStageEntry<Map<byte[], U>>> subStage(LLDictionary dictionary,
public Mono<DatabaseStageEntry<Map<T, U>>> subStage(LLDictionary dictionary,
@Nullable CompositeSnapshot snapshot,
byte[] prefixKey,
Flux<byte[]> keyFlux) {
return Mono.just(new DatabaseMapDictionary<>(dictionary, subStageGetter, prefixKey, keyLength, keyExtLength));
return Mono.just(new DatabaseMapDictionary<>(dictionary,
subStageGetter,
keySerializer,
prefixKey,
keyLength,
keyExtLength
));
}
}

36
src/main/java/it/cavallium/dbengine/database/disk/LLLocalDatabaseConnection.java
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@ -1,15 +1,14 @@
package it.cavallium.dbengine.database.disk;
import java.io.IOException;
import it.cavallium.dbengine.database.Column;
import it.cavallium.dbengine.database.LLDatabaseConnection;
import it.cavallium.dbengine.database.LLLuceneIndex;
import it.cavallium.dbengine.database.analyzer.TextFieldsAnalyzer;
import java.nio.file.Files;
import java.nio.file.Path;
import java.time.Duration;
import java.util.LinkedList;
import java.util.List;
import it.cavallium.dbengine.database.Column;
import it.cavallium.dbengine.database.LLDatabaseConnection;
import it.cavallium.dbengine.database.LLLuceneIndex;
import it.cavallium.dbengine.database.analyzer.TextFieldsAnalyzer;
import reactor.core.publisher.Mono;
import reactor.core.scheduler.Schedulers;
@ -24,30 +23,39 @@ public class LLLocalDatabaseConnection implements LLDatabaseConnection {
}
@Override
public Mono<Void> connect() {
public Mono<LLDatabaseConnection> connect() {
return Mono
.<Void>fromCallable(() -> {
.<LLDatabaseConnection>fromCallable(() -> {
if (Files.notExists(basePath)) {
Files.createDirectories(basePath);
}
return null;
return this;
})
.subscribeOn(Schedulers.boundedElastic());
}
@Override
public LLLocalKeyValueDatabase getDatabase(String name, List<Column> columns, boolean lowMemory) throws IOException {
return new LLLocalKeyValueDatabase(name, basePath.resolve("database_" + name), columns, new LinkedList<>(),
crashIfWalError, lowMemory);
public Mono<LLLocalKeyValueDatabase> getDatabase(String name, List<Column> columns, boolean lowMemory) {
return Mono
.<LLLocalKeyValueDatabase>fromCallable(() -> new LLLocalKeyValueDatabase(name,
basePath.resolve("database_" + name),
columns,
new LinkedList<>(),
crashIfWalError,
lowMemory
))
.subscribeOn(Schedulers.boundedElastic());
}
@Override
public LLLuceneIndex getLuceneIndex(String name,
public Mono<LLLuceneIndex> getLuceneIndex(String name,
int instancesCount,
TextFieldsAnalyzer textFieldsAnalyzer,
Duration queryRefreshDebounceTime,
Duration commitDebounceTime,
boolean lowMemory) throws IOException {
boolean lowMemory) {
return Mono
.fromCallable(() -> {
if (instancesCount != 1) {
return new LLLocalMultiLuceneIndex(basePath.resolve("lucene"),
name,
@ -66,6 +74,8 @@ public class LLLocalDatabaseConnection implements LLDatabaseConnection {
lowMemory
);
}
})
.subscribeOn(Schedulers.boundedElastic());
}
@Override

3
src/main/java/it/cavallium/dbengine/database/disk/LLLocalKeyValueDatabase.java
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@ -61,6 +61,8 @@ public class LLLocalKeyValueDatabase implements LLKeyValueDatabase {
Options options = openRocksDb(path, crashIfWalError, lowMemory);
try {
List<ColumnFamilyDescriptor> descriptors = new LinkedList<>();
descriptors
.add(new ColumnFamilyDescriptor(RocksDB.DEFAULT_COLUMN_FAMILY));
for (Column column : columns) {
descriptors
.add(new ColumnFamilyDescriptor(column.getName().getBytes(StandardCharsets.US_ASCII)));
@ -240,6 +242,7 @@ public class LLLocalKeyValueDatabase implements LLKeyValueDatabase {
});
List<ColumnFamilyDescriptor> descriptors = new LinkedList<>();
descriptors.add(new ColumnFamilyDescriptor(RocksDB.DEFAULT_COLUMN_FAMILY));
for (byte[] existingColumnFamily : existingColumnFamilies) {
descriptors.add(new ColumnFamilyDescriptor(existingColumnFamily));
}

4
src/test/java/it/cavallium/dbengine/client/Database.java
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@ -1,3 +1,5 @@
package it.cavallium.dbengine.client;
public class Database {}
public class Database {
}