44 lines
1.4 KiB
Java
44 lines
1.4 KiB
Java
package it.cavallium.dbengine.database.collections;
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import io.netty.buffer.api.Buffer;
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import io.netty.buffer.api.Send;
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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.collections.DatabaseEmpty.Nothing;
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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 SubStageGetterSet<T> implements SubStageGetter<Map<T, Nothing>, DatabaseSetDictionary<T>> {
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private final SerializerFixedBinaryLength<T> keySerializer;
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public SubStageGetterSet(SerializerFixedBinaryLength<T> keySerializer) {
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this.keySerializer = keySerializer;
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}
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@Override
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public Mono<DatabaseSetDictionary<T>> subStage(LLDictionary dictionary,
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@Nullable CompositeSnapshot snapshot,
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Mono<Send<Buffer>> prefixKeyMono) {
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return Mono.usingWhen(prefixKeyMono,
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prefixKey -> Mono
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.fromSupplier(() -> DatabaseSetDictionary.tail(dictionary, prefixKey, keySerializer)),
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prefixKey -> Mono.fromRunnable(prefixKey::close)
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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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