52 lines
1.6 KiB
Java
52 lines
1.6 KiB
Java
package it.cavallium.dbengine.database.collections;
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import io.netty.buffer.ByteBuf;
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import io.netty.util.ReferenceCounted;
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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.serialization.Serializer;
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import it.cavallium.dbengine.database.serialization.SerializerFixedBinaryLength;
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import java.util.List;
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import java.util.Map;
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import org.jetbrains.annotations.Nullable;
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import reactor.core.publisher.Flux;
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import reactor.core.publisher.Mono;
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public class SubStageGetterMap<T, U> implements SubStageGetter<Map<T, U>, DatabaseMapDictionary<T, U>> {
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private final SerializerFixedBinaryLength<T, ByteBuf> keySerializer;
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private final Serializer<U, ByteBuf> valueSerializer;
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public SubStageGetterMap(SerializerFixedBinaryLength<T, ByteBuf> keySerializer,
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Serializer<U, ByteBuf> valueSerializer) {
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this.keySerializer = keySerializer;
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this.valueSerializer = valueSerializer;
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}
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@Override
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public Mono<DatabaseMapDictionary<T, U>> subStage(LLDictionary dictionary,
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@Nullable CompositeSnapshot snapshot,
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Mono<ByteBuf> prefixKeyMono) {
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return Mono.usingWhen(prefixKeyMono,
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prefixKey -> Mono
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.fromSupplier(() -> DatabaseMapDictionary
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.tail(dictionary,
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prefixKey.retain(),
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keySerializer,
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valueSerializer
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)
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),
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prefixKey -> Mono.fromRunnable(prefixKey::release)
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);
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}
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@Override
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public boolean isMultiKey() {
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return true;
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}
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public int getKeyBinaryLength() {
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return keySerializer.getSerializedBinaryLength();
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}
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}
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