59 lines
2.0 KiB
Java
59 lines
2.0 KiB
Java
package it.cavallium.dbengine.database.collections;
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import io.netty5.buffer.Buffer;
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import io.netty5.buffer.Drop;
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import io.netty5.util.Send;
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import it.cavallium.dbengine.client.CompositeSnapshot;
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import it.cavallium.dbengine.database.BufSupplier;
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import it.cavallium.dbengine.database.LLDictionary;
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import it.cavallium.dbengine.database.LLUtils;
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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 it.unimi.dsi.fastutil.objects.Object2ObjectLinkedOpenHashMap;
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import java.util.HashMap;
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import java.util.Map;
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import java.util.Set;
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import org.jetbrains.annotations.Nullable;
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import reactor.core.publisher.Mono;
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@SuppressWarnings("unused")
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public class DatabaseSetDictionary<T> extends DatabaseMapDictionary<T, Nothing> {
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protected DatabaseSetDictionary(LLDictionary dictionary,
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BufSupplier prefixKeySupplier,
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SerializerFixedBinaryLength<T> keySuffixSerializer) {
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super(dictionary,
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prefixKeySupplier,
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keySuffixSerializer,
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DatabaseEmpty.nothingSerializer(dictionary.getAllocator())
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);
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}
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public static <T> DatabaseSetDictionary<T> simple(LLDictionary dictionary,
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SerializerFixedBinaryLength<T> keySerializer) {
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return new DatabaseSetDictionary<>(dictionary, null, keySerializer);
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}
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public static <T> DatabaseSetDictionary<T> tail(LLDictionary dictionary,
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BufSupplier prefixKeySupplier,
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SerializerFixedBinaryLength<T> keySuffixSerializer) {
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return new DatabaseSetDictionary<>(dictionary, prefixKeySupplier, keySuffixSerializer);
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}
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public Mono<Set<T>> getKeySet(@Nullable CompositeSnapshot snapshot) {
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return get(snapshot).map(Map::keySet);
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}
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public Mono<Set<T>> setAndGetPreviousKeySet(Set<T> value) {
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var hm = new Object2ObjectLinkedOpenHashMap<T, Nothing>();
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for (T t : value) {
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hm.put(t, DatabaseEmpty.NOTHING);
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}
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return setAndGetPrevious(hm).map(Map::keySet);
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}
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public Mono<Set<T>> clearAndGetPreviousKeySet() {
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return clearAndGetPrevious().map(Map::keySet);
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}
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}
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