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Java example source code file (ForwardingMapEntry.java)
The ForwardingMapEntry.java Java example source code/* * Copyright (C) 2007 The Guava Authors * * 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 com.google.common.collect; import com.google.common.annotations.Beta; import com.google.common.annotations.GwtCompatible; import com.google.common.base.Objects; import java.util.Map; import java.util.Map.Entry; import javax.annotation.Nullable; /** * A map entry which forwards all its method calls to another map entry. * Subclasses should override one or more methods to modify the behavior of the * backing map entry as desired per the <a * href="http://en.wikipedia.org/wiki/Decorator_pattern">decorator pattern</a>. * * <p>Warning: The methods of {@code ForwardingMapEntry} forward * <i>indiscriminately to the methods of the delegate. For example, * overriding {@link #getValue} alone <i>will not change the behavior of * {@link #equals}, which can lead to unexpected behavior. In this case, you * should override {@code equals} as well, either providing your own * implementation, or delegating to the provided {@code standardEquals} method. * * <p>Each of the {@code standard} methods, where appropriate, use {@link * Objects#equal} to test equality for both keys and values. This may not be * the desired behavior for map implementations that use non-standard notions of * key equality, such as the entry of a {@code SortedMap} whose comparator is * not consistent with {@code equals}. * * <p>The {@code standard} methods are not guaranteed to be thread-safe, even * when all of the methods that they depend on are thread-safe. * * @author Mike Bostock * @author Louis Wasserman * @since 2.0 */ @GwtCompatible public abstract class ForwardingMapEntry<K, V> extends ForwardingObject implements Map.Entry Other Java examples (source code examples)Here is a short list of links related to this Java ForwardingMapEntry.java source code file: |
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