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Liferay Portal Template FreeMarker
/*
* 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 freemarker.template;
import java.util.Iterator;
import java.util.Map;
import java.util.Map.Entry;
import freemarker.template.TemplateHashModelEx2.KeyValuePair;
import freemarker.template.TemplateHashModelEx2.KeyValuePairIterator;
/**
* Implementation of {@link KeyValuePairIterator} for a {@link TemplateHashModelEx2} that wraps or otherwise uses a
* {@link Map} internally.
*
* @since 2.3.25
*/
public class MapKeyValuePairIterator implements KeyValuePairIterator {
private final Iterator> entrySetIterator;
private final ObjectWrapper objectWrapper;
@SuppressWarnings({ "rawtypes", "unchecked" })
public MapKeyValuePairIterator(Map, ?> map, ObjectWrapper objectWrapper) {
entrySetIterator = ((Map) map).entrySet().iterator();
this.objectWrapper = objectWrapper;
}
@Override
public boolean hasNext() {
return entrySetIterator.hasNext();
}
@Override
public KeyValuePair next() {
final Entry, ?> entry = entrySetIterator.next();
return new KeyValuePair() {
@Override
public TemplateModel getKey() throws TemplateModelException {
return wrap(entry.getKey());
}
@Override
public TemplateModel getValue() throws TemplateModelException {
return wrap(entry.getValue());
}
};
}
private TemplateModel wrap(Object obj) throws TemplateModelException {
return (obj instanceof TemplateModel) ? (TemplateModel) obj : objectWrapper.wrap(obj);
}
}
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