net.openhft.chronicle.hash.serialization.MapMarshaller Maven / Gradle / Ivy
/*
* Copyright 2012-2018 Chronicle Map Contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package net.openhft.chronicle.hash.serialization;
import net.openhft.chronicle.bytes.Bytes;
import net.openhft.chronicle.wire.WireIn;
import net.openhft.chronicle.wire.WireOut;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import java.util.ArrayDeque;
import java.util.Deque;
import java.util.HashMap;
import java.util.Map;
import static net.openhft.chronicle.hash.serialization.StatefulCopyable.copyIfNeeded;
/**
* Marshaller of {@code Map}. Uses {@link HashMap} (hence default key objects' equality and
* {@code hashCode()} as the map implementation to deserialize into.
*
*
This marshaller supports multimap emulation on top of Chronicle Map, that is possible but
* inefficient. See the
* README section.
*
*
Look for pre-defined key and value marshallers in {@link
* net.openhft.chronicle.hash.serialization.impl} package. This package is not included into
* Javadocs, but present in Chronicle Map distribution. If there are no existing marshallers for
* your {@code Map} key or value types, define {@link BytesReader} and {@link BytesWriter} yourself.
*
* @param the key type of serialized Maps
* @param the value type of serialized Maps
* @see ListMarshaller
* @see SetMarshaller
*/
public final class MapMarshaller implements BytesReader