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Update DatabaseMapDictionary.java

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Andrea Cavalli 2021-01-31 12:07:07 +01:00
parent 9918ef3258
commit da0ba7d6bb
1 changed files with 14 additions and 6 deletions
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src/main/java/it/cavallium/dbengine/database/collections/DatabaseMapDictionary.java
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@ -1,5 +1,6 @@
package it.cavallium.dbengine.database.collections; package it.cavallium.dbengine.database.collections;
import io.netty.buffer.Unpooled;
import it.cavallium.dbengine.client.CompositeSnapshot; import it.cavallium.dbengine.client.CompositeSnapshot;
import it.cavallium.dbengine.database.LLDictionary; import it.cavallium.dbengine.database.LLDictionary;
import it.cavallium.dbengine.database.LLRange; import it.cavallium.dbengine.database.LLRange;
@ -18,7 +19,7 @@ public class DatabaseMapDictionary<T, U, US extends DatabaseStage<U>> implements
public static final byte[] EMPTY_BYTES = new byte[0]; public static final byte[] EMPTY_BYTES = new byte[0];
private final LLDictionary dictionary; private final LLDictionary dictionary;
private final SubStageGetter<U, US> subStageGetter; private final SubStageGetter<U, US> subStageGetter;
private final FixedLengthSerializer<T> suffixKeySerializer; private final FixedLengthSerializer<T> keySuffixSerializer;
private final byte[] keyPrefix; private final byte[] keyPrefix;
private final int keySuffixLength; private final int keySuffixLength;
private final int keyExtLength; private final int keyExtLength;
@ -70,10 +71,10 @@ public class DatabaseMapDictionary<T, U, US extends DatabaseStage<U>> implements
this(dictionary, subStageGetter, keySerializer, EMPTY_BYTES, keyLength, keyExtLength); this(dictionary, subStageGetter, keySerializer, EMPTY_BYTES, keyLength, keyExtLength);
} }
public DatabaseMapDictionary(LLDictionary dictionary, SubStageGetter<U, US> subStageGetter, FixedLengthSerializer<T> suffixKeySerializer, byte[] prefixKey, int keySuffixLength, int keyExtLength) { public DatabaseMapDictionary(LLDictionary dictionary, SubStageGetter<U, US> subStageGetter, FixedLengthSerializer<T> keySuffixSerializer, byte[] prefixKey, int keySuffixLength, int keyExtLength) {
this.dictionary = dictionary; this.dictionary = dictionary;
this.subStageGetter = subStageGetter; this.subStageGetter = subStageGetter;
this.suffixKeySerializer = suffixKeySerializer; this.keySuffixSerializer = keySuffixSerializer;
this.keyPrefix = prefixKey; this.keyPrefix = prefixKey;
this.keySuffixLength = keySuffixLength; this.keySuffixLength = keySuffixLength;
this.keyExtLength = keyExtLength; this.keyExtLength = keyExtLength;
@ -175,11 +176,18 @@ public class DatabaseMapDictionary<T, U, US extends DatabaseStage<U>> implements
); );
} }
private T deserializeSuffix(byte[] suffix) { //todo: temporary wrapper. convert the whole class to buffers
return (T) new Object(); private T deserializeSuffix(byte[] keySuffix) {
var serialized = Unpooled.wrappedBuffer(keySuffix);
return keySuffixSerializer.deserialize(serialized, keySuffixLength);
} }
//todo: temporary wrapper. convert the whole class to buffers
private byte[] serializeSuffix(T keySuffix) { private byte[] serializeSuffix(T keySuffix) {
return new byte[0]; var output = Unpooled.buffer(keySuffixLength, keySuffixLength);
var outputBytes = new byte[keySuffixLength];
keySuffixSerializer.serialize(keySuffix, output, keySuffixLength);
output.getBytes(0, outputBytes, 0, keySuffixLength);
return outputBytes;
} }
} }