/*
* 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 de.unioninvestment.eai.portal.portlet.crud.domain.support.map;
import java.util.Map;
import java.util.Map.Entry;
/**
* Ein {@link Entry} für die {@link TransformedEntryMap}.
*
* @param <A>
* der Schlüsseltyp
* @param <B>
* der Wertetyp des zu konvertierenden Wertes
* @param <C>
* der Wertetyp
*
* @author carsten.mjartan
*/
public class TransformedEntry<A, B, C> implements Map.Entry<A, C> {
private final Entry<A, B> delegate;
private final ValueTransformer<B, C> transformer;
/**
* @param delegate
* der Backing-Entry
* @param transformer
* der Konverter
*/
public TransformedEntry(Entry<A, B> delegate,
ValueTransformer<B, C> transformer) {
this.delegate = delegate;
this.transformer = transformer;
}
@Override
public A getKey() {
return delegate.getKey();
}
@Override
public C getValue() {
return transformer.transform(delegate.getValue());
}
@Override
public C setValue(C value) {
throw new UnsupportedOperationException();
}
@Override
@SuppressWarnings("all")
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result
+ ((delegate == null) ? 0 : delegate.hashCode());
result = prime * result
+ ((transformer == null) ? 0 : transformer.hashCode());
return result;
}
@Override
@SuppressWarnings("all")
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
TransformedEntry other = (TransformedEntry) obj;
if (delegate == null) {
if (other.delegate != null)
return false;
} else if (!delegate.equals(other.delegate))
return false;
if (transformer == null) {
if (other.transformer != null)
return false;
} else if (!transformer.equals(other.transformer))
return false;
return true;
}
}