/*
* 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<
Entry<?, ?>>
entrySetIterator;
private final
ObjectWrapper objectWrapper;
@
SuppressWarnings({ "rawtypes", "unchecked" })
public <K, V>
MapKeyValuePairIterator(
Map<?, ?>
map,
ObjectWrapper objectWrapper) {
entrySetIterator = ((
Map)
map).
entrySet().
iterator();
this.
objectWrapper =
objectWrapper;
}
public boolean
hasNext() {
return
entrySetIterator.
hasNext();
}
public
KeyValuePair next() {
final
Entry<?, ?>
entry =
entrySetIterator.
next();
return new
KeyValuePair() {
public
TemplateModel getKey() throws
TemplateModelException {
return
wrap(
entry.
getKey());
}
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);
}
}