/*
* 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.io.Serializable;
import java.util.AbstractSet;
import java.util.Iterator;
import java.util.Map.Entry;
import java.util.Set;
/**
* Implementierung des entrySet() für die {@link TransformedEntryMap}.
*
* @param <A>
* der Schlüsseltyp
* @param <B>
* der Wertetyp des zu konvertierenden Wertes
* @param <C>
* der Wertetyp
*
*
* @author carsten.mjartan
*/
class TransformedEntrySet<A, B, C> extends AbstractSet<Entry<A, C>> implements
Serializable {
private static final long serialVersionUID = 1L;
private Set<Entry<A, B>> delegate;
private ValueTransformer<B, C> transformer;
/**
* @param delegate
* @param transformer
*/
public TransformedEntrySet(Set<Entry<A, B>> delegate,
ValueTransformer<B, C> transformer) {
this.delegate = delegate;
this.transformer = transformer;
}
@Override
public Iterator<Entry<A, C>> iterator() {
final Iterator<Entry<A, B>> namesIterator = delegate.iterator();
return new Iterator<Entry<A, C>>() {
@Override
public boolean hasNext() {
return namesIterator.hasNext();
}
@Override
public Entry<A, C> next() {
Entry<A, B> next = namesIterator.next();
return new TransformedEntry<A, B, C>(next, transformer);
}
@Override
public void remove() {
throw new UnsupportedOperationException();
}
};
}
@Override
public int size() {
return delegate.size();
}
}