53 lines
2.1 KiB
Java
53 lines
2.1 KiB
Java
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.BufferAllocator;
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import io.net5.buffer.api.CompositeBuffer;
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import io.net5.buffer.api.Send;
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import it.cavallium.dbengine.database.LLUtils;
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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 java.util.Map;
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import java.util.Map.Entry;
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import java.util.Objects;
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import org.jetbrains.annotations.NotNull;
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import org.jetbrains.annotations.Nullable;
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class ValueWithHashSerializer<X, Y> implements Serializer<Entry<X, Y>> {
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private final BufferAllocator allocator;
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private final Serializer<X> keySuffixSerializer;
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private final Serializer<Y> valueSerializer;
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ValueWithHashSerializer(BufferAllocator allocator,
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Serializer<X> keySuffixSerializer,
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Serializer<Y> valueSerializer) {
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this.allocator = allocator;
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this.keySuffixSerializer = keySuffixSerializer;
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this.valueSerializer = valueSerializer;
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}
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@Override
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public @NotNull DeserializationResult<Entry<X, Y>> deserialize(@Nullable Send<Buffer> serializedToReceive)
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throws SerializationException {
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Objects.requireNonNull(serializedToReceive);
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try (var serialized = serializedToReceive.receive()) {
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DeserializationResult<X> deserializedKey = keySuffixSerializer.deserialize(serialized.copy().send());
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DeserializationResult<Y> deserializedValue = valueSerializer.deserialize(serialized
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.copy(serialized.readerOffset() + deserializedKey.bytesRead(),
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serialized.readableBytes() - deserializedKey.bytesRead()
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)
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.send());
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return new DeserializationResult<>(Map.entry(deserializedKey.deserializedData(),
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deserializedValue.deserializedData()), deserializedKey.bytesRead() + deserializedValue.bytesRead());
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}
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}
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@Override
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public @NotNull Send<Buffer> serialize(@NotNull Entry<X, Y> deserialized) throws SerializationException {
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var keySuffix = keySuffixSerializer.serialize(deserialized.getKey());
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var value = valueSerializer.serialize(deserialized.getValue());
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return LLUtils.compositeBuffer(allocator, keySuffix, value).send();
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}
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}
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