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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.ext.beans;
import java.util.List;
import java.util.Map;
import freemarker.core.CollectionAndSequence;
import freemarker.ext.util.ModelFactory;
import freemarker.ext.util.WrapperTemplateModel;
import freemarker.template.AdapterTemplateModel;
import freemarker.template.MapKeyValuePairIterator;
import freemarker.template.ObjectWrapper;
import freemarker.template.SimpleSequence;
import freemarker.template.TemplateCollectionModel;
import freemarker.template.TemplateHashModelEx2;
import freemarker.template.TemplateMethodModelEx;
import freemarker.template.TemplateModel;
import freemarker.template.TemplateModelException;
import freemarker.template.TemplateModelWithAPISupport;
import freemarker.template.WrappingTemplateModel;
import freemarker.template.utility.RichObjectWrapper;
/**
* Model used by {@link BeansWrapper} when simpleMapWrapper
* mode is enabled. Provides a simple hash model interface to the
* underlying map (does not copy like {@link freemarker.template.SimpleHash}),
* and a method interface to non-string keys.
*/
public class SimpleMapModel extends WrappingTemplateModel
implements TemplateHashModelEx2, TemplateMethodModelEx, AdapterTemplateModel,
WrapperTemplateModel, TemplateModelWithAPISupport {
static final ModelFactory FACTORY =
new ModelFactory()
{
@Override
public TemplateModel create(Object object, ObjectWrapper wrapper) {
return new SimpleMapModel((Map) object, (BeansWrapper) wrapper);
}
};
private final Map map;
public SimpleMapModel(Map map, BeansWrapper wrapper) {
super(wrapper);
this.map = map;
}
@Override
public TemplateModel get(String key) throws TemplateModelException {
Object val = map.get(key);
if (val == null) {
if (key.length() == 1) {
// just check for Character key if this is a single-character string
Character charKey = Character.valueOf(key.charAt(0));
val = map.get(charKey);
if (val == null && !(map.containsKey(key) || map.containsKey(charKey))) {
return null;
}
} else if (!map.containsKey(key)) {
return null;
}
}
return wrap(val);
}
@Override
public Object exec(List args) throws TemplateModelException {
Object key = ((BeansWrapper) getObjectWrapper()).unwrap((TemplateModel) args.get(0));
Object value = map.get(key);
if (value == null && !map.containsKey(key)) {
return null;
}
return wrap(value);
}
@Override
public boolean isEmpty() {
return map.isEmpty();
}
@Override
public int size() {
return map.size();
}
@Override
public TemplateCollectionModel keys() {
return new CollectionAndSequence(new SimpleSequence(map.keySet(), getObjectWrapper()));
}
@Override
public TemplateCollectionModel values() {
return new CollectionAndSequence(new SimpleSequence(map.values(), getObjectWrapper()));
}
@Override
public KeyValuePairIterator keyValuePairIterator() {
return new MapKeyValuePairIterator(map, getObjectWrapper());
}
@Override
public Object getAdaptedObject(Class hint) {
return map;
}
@Override
public Object getWrappedObject() {
return map;
}
@Override
public TemplateModel getAPI() throws TemplateModelException {
return ((RichObjectWrapper) getObjectWrapper()).wrapAsAPI(map);
}
}
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