CavalliumDBEngine/src/main/java/it/cavallium/dbengine/database/collections/DatabaseSetDictionary.java

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package it.cavallium.dbengine.database.collections;
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import io.net5.buffer.api.Buffer;
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import io.net5.buffer.api.Drop;
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import io.net5.buffer.api.Send;
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import it.cavallium.dbengine.client.CompositeSnapshot;
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;
import it.cavallium.dbengine.database.serialization.SerializerFixedBinaryLength;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
import org.jetbrains.annotations.Nullable;
import reactor.core.publisher.Mono;
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@SuppressWarnings("unused")
public class DatabaseSetDictionary<T> extends DatabaseMapDictionary<T, Nothing> {
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protected DatabaseSetDictionary(LLDictionary dictionary,
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Buffer prefixKey,
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SerializerFixedBinaryLength<T> keySuffixSerializer,
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Runnable onClose) {
super(dictionary, prefixKey, keySuffixSerializer, DatabaseEmpty.nothingSerializer(dictionary.getAllocator()), onClose);
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}
public static <T> DatabaseSetDictionary<T> simple(LLDictionary dictionary,
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SerializerFixedBinaryLength<T> keySerializer,
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Runnable onClose) {
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return new DatabaseSetDictionary<>(dictionary, null, keySerializer, onClose);
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}
public static <T> DatabaseSetDictionary<T> tail(LLDictionary dictionary,
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Buffer prefixKey,
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SerializerFixedBinaryLength<T> keySuffixSerializer,
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Runnable onClose) {
return new DatabaseSetDictionary<>(dictionary, prefixKey, keySuffixSerializer, onClose);
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}
public Mono<Set<T>> getKeySet(@Nullable CompositeSnapshot snapshot) {
return get(snapshot).map(Map::keySet);
}
public Mono<Set<T>> setAndGetPreviousKeySet(Set<T> value) {
var hm = new HashMap<T, Nothing>();
for (T t : value) {
hm.put(t, DatabaseEmpty.NOTHING);
}
return setAndGetPrevious(hm).map(Map::keySet);
}
public Mono<Set<T>> clearAndGetPreviousKeySet() {
return clearAndGetPrevious().map(Map::keySet);
}
}