| // CHECKSTYLE_OFF: Copyrighted to ASF |
| /* |
| * Copyright 1999-2004 The Apache Software Foundation |
| * |
| * 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. |
| */ |
| // CHECKSTYLE_ON |
| package com.google.gwt.emultest.java.util; |
| |
| import java.util.Map; |
| |
| /** A default implementation of {@link java.util.Map.Entry} */ |
| @SuppressWarnings("rawtypes") |
| class DefaultMapEntry implements Map.Entry { |
| |
| private Object key; |
| private Object value; |
| |
| /** Constructs a new <Code>DefaultMapEntry</Code> with a null key and null value. */ |
| public DefaultMapEntry() {} |
| |
| /** |
| * Constructs a new <Code>DefaultMapEntry</Code> with the given key and given value. |
| * |
| * @param key the key for the entry, may be null |
| * @param value the value for the entyr, may be null |
| */ |
| public DefaultMapEntry(Object key, Object value) { |
| this.key = key; |
| this.value = value; |
| } |
| |
| /** Implemented per API documentation of {@link java.util.Map.Entry#equals(Object)} */ |
| @Override |
| public boolean equals(Object o) { |
| if (o == null) { |
| return false; |
| } |
| if (o == this) { |
| return true; |
| } |
| |
| if (!(o instanceof Map.Entry)) { |
| return false; |
| } |
| Map.Entry e2 = (Map.Entry) o; |
| return ((getKey() == null ? e2.getKey() == null : getKey().equals(e2.getKey())) |
| && (getValue() == null ? e2.getValue() == null : getValue().equals(e2.getValue()))); |
| } |
| |
| /** Implemented per API documentation of {@link java.util.Map.Entry#hashCode()} */ |
| @Override |
| public int hashCode() { |
| return ((getKey() == null ? 0 : getKey().hashCode()) |
| ^ (getValue() == null ? 0 : getValue().hashCode())); |
| } |
| |
| // Map.Entry interface |
| // ------------------------------------------------------------------------- |
| |
| /** |
| * Returns the key. |
| * |
| * @return the key |
| */ |
| @Override |
| public Object getKey() { |
| return key; |
| } |
| |
| /** |
| * Returns the value. |
| * |
| * @return the value |
| */ |
| @Override |
| public Object getValue() { |
| return value; |
| } |
| |
| // Properties |
| // ------------------------------------------------------------------------- |
| |
| /** |
| * Sets the key. This method does not modify any map. |
| * |
| * @param key the new key |
| */ |
| public void setKey(Object key) { |
| this.key = key; |
| } |
| |
| /** |
| * Note that this method only sets the local reference inside this object and does not modify the |
| * original Map. |
| * |
| * @return the old value of the value |
| * @param value the new value |
| */ |
| @Override |
| public Object setValue(Object value) { |
| Object previous = this.value; |
| this.value = value; |
| return previous; |
| } |
| } |