75 lines
2.1 KiB
Java
75 lines
2.1 KiB
Java
package it.cavallium.dbengine.database.memory;
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import io.netty5.buffer.api.Buffer;
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import io.netty5.buffer.api.BufferAllocator;
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import io.netty5.util.Send;
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import it.cavallium.dbengine.database.LLDelta;
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import it.cavallium.dbengine.database.LLDictionaryResultType;
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import it.cavallium.dbengine.database.LLSingleton;
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import it.cavallium.dbengine.database.LLSnapshot;
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import it.cavallium.dbengine.database.UpdateReturnMode;
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import it.cavallium.dbengine.database.disk.BinarySerializationFunction;
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import it.cavallium.dbengine.database.serialization.SerializationFunction;
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import org.jetbrains.annotations.Nullable;
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import reactor.core.publisher.Mono;
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public class LLMemorySingleton implements LLSingleton {
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private final LLMemoryDictionary dict;
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private final String columnNameString;
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private final byte[] singletonName;
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private final Mono<Buffer> singletonNameBufMono;
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public LLMemorySingleton(LLMemoryDictionary dict, String columnNameString, byte[] singletonName) {
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this.dict = dict;
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this.columnNameString = columnNameString;
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this.singletonName = singletonName;
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this.singletonNameBufMono = Mono.fromSupplier(() -> dict.getAllocator().allocate(singletonName.length)
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.writeBytes(singletonName));
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}
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@Override
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public String getDatabaseName() {
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return dict.getDatabaseName();
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}
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@Override
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public BufferAllocator getAllocator() {
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return dict.getAllocator();
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}
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@Override
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public Mono<Buffer> get(@Nullable LLSnapshot snapshot) {
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return dict.get(snapshot, singletonNameBufMono);
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}
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@Override
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public Mono<Void> set(Mono<Buffer> value) {
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var bbKey = singletonNameBufMono;
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return dict
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.put(bbKey, value, LLDictionaryResultType.VOID)
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.then();
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}
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@Override
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public Mono<Buffer> update(BinarySerializationFunction updater,
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UpdateReturnMode updateReturnMode) {
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return dict.update(singletonNameBufMono, updater, updateReturnMode);
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}
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@Override
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public Mono<LLDelta> updateAndGetDelta(BinarySerializationFunction updater) {
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return dict.updateAndGetDelta(singletonNameBufMono, updater);
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}
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@Override
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public String getColumnName() {
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return columnNameString;
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}
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@Override
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public String getName() {
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return new String(singletonName);
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}
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}
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