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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 org.msgpack.util.android;
import java.io.Serializable;
import java.util.Map;
/**
* An immutable key-value mapping. Despite the name, this class is non-final
* and its subclasses may be mutable.
*
* This class is ported from java.util.AbstractMap$SimpleImmutableEntry of
* https://github.com/OESF/OHA-Android-4.0.3_r1.0 (Apache License).
*/
public class PortedImmutableEntry implements Map.Entry, Serializable {
private static final long serialVersionUID = -4564047655287765373L;
private final K key;
private final V value;
public PortedImmutableEntry(K theKey, V theValue) {
key = theKey;
value = theValue;
}
/**
* Constructs an instance with the key and value of {@code copyFrom}.
*/
public PortedImmutableEntry(Map.Entry extends K, ? extends V> copyFrom) {
key = copyFrom.getKey();
value = copyFrom.getValue();
}
public K getKey() {
return key;
}
public V getValue() {
return value;
}
/**
* This base implementation throws {@code UnsupportedOperationException}
* always.
*/
public V setValue(V object) {
throw new UnsupportedOperationException();
}
@Override public boolean equals(Object object) {
if (this == object) {
return true;
}
if (object instanceof Map.Entry) {
Map.Entry, ?> entry = (Map.Entry, ?>) object;
return (key == null ? entry.getKey() == null : key.equals(entry
.getKey()))
&& (value == null ? entry.getValue() == null : value
.equals(entry.getValue()));
}
return false;
}
@Override public int hashCode() {
return (key == null ? 0 : key.hashCode())
^ (value == null ? 0 : value.hashCode());
}
@Override public String toString() {
return key + "=" + value;
}
}
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