45 lines
1.5 KiB
Java
45 lines
1.5 KiB
Java
package it.cavallium.dbengine.database.collections;
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import it.cavallium.dbengine.buffers.Buf;
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import it.cavallium.dbengine.client.CompositeSnapshot;
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import it.cavallium.dbengine.database.LLDictionary;
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import it.cavallium.dbengine.database.collections.DatabaseEmpty.Nothing;
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import it.cavallium.dbengine.database.serialization.Serializer;
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import it.cavallium.dbengine.database.serialization.SerializerFixedBinaryLength;
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import it.unimi.dsi.fastutil.objects.Object2ObjectSortedMap;
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import java.util.function.Function;
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import org.jetbrains.annotations.Nullable;
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@SuppressWarnings({"unused"})
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public class SubStageGetterHashSet<T, TH> implements
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SubStageGetter<Object2ObjectSortedMap<T, Nothing>, DatabaseSetDictionaryHashed<T, TH>> {
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final Serializer<T> keySerializer;
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final Function<T, TH> keyHashFunction;
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final SerializerFixedBinaryLength<TH> keyHashSerializer;
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public SubStageGetterHashSet(Serializer<T> keySerializer,
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Function<T, TH> keyHashFunction,
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SerializerFixedBinaryLength<TH> keyHashSerializer) {
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this.keySerializer = keySerializer;
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this.keyHashFunction = keyHashFunction;
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this.keyHashSerializer = keyHashSerializer;
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}
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@Override
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public DatabaseSetDictionaryHashed<T, TH> subStage(LLDictionary dictionary,
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@Nullable CompositeSnapshot snapshot,
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Buf prefixKey) {
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return DatabaseSetDictionaryHashed.tail(dictionary,
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prefixKey,
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keySerializer,
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keyHashFunction,
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keyHashSerializer
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);
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}
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public int getKeyHashBinaryLength() {
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return keyHashSerializer.getSerializedBinaryLength();
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}
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}
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