52 lines
1.3 KiB
Java
52 lines
1.3 KiB
Java
package it.cavallium.dbengine.database.collections;
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import it.cavallium.buffer.Buf;
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import it.cavallium.buffer.BufDataInput;
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import it.cavallium.buffer.BufDataOutput;
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import it.cavallium.dbengine.database.LLDictionary;
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import it.cavallium.dbengine.database.serialization.SerializationException;
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import it.cavallium.dbengine.database.serialization.Serializer;
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import org.jetbrains.annotations.NotNull;
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public class DatabaseEmpty {
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@SuppressWarnings({"unused", "InstantiationOfUtilityClass"})
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public static final Nothing NOTHING = new Nothing();
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public static Serializer<Nothing> nothingSerializer() {
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return new Serializer<>() {
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@Override
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public @NotNull Nothing deserialize(@NotNull BufDataInput in) throws SerializationException {
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return NOTHING;
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}
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@Override
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public void serialize(@NotNull Nothing deserialized, BufDataOutput out) throws SerializationException {
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}
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@Override
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public int getSerializedSizeHint() {
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return 0;
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}
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};
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}
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private DatabaseEmpty() {
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}
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public static DatabaseStageEntry<Nothing> create(LLDictionary dictionary, Buf key) {
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return new DatabaseMapSingle<>(dictionary, key, nothingSerializer());
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}
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public static final class Nothing {
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@SuppressWarnings("InstantiationOfUtilityClass")
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public static Nothing INSTANCE = new Nothing();
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private Nothing() {
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}
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}
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} |