/*
* Copyright 2014 Attila Szegedi, Daniel Dekany, Jonathan Revusky
*
* Licensed 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.ObjectWrapper;
import freemarker.template.SimpleSequence;
import freemarker.template.TemplateCollectionModel;
import freemarker.template.TemplateHashModelEx;
import freemarker.template.TemplateMethodModelEx;
import freemarker.template.TemplateModel;
import freemarker.template.TemplateModelException;
import freemarker.template.WrappingTemplateModel;
/**
* Model used by {@link BeansWrapper} when <tt>simpleMapWrapper</tt>
* 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 TemplateHashModelEx, TemplateMethodModelEx, AdapterTemplateModel,
WrapperTemplateModel
{
static final ModelFactory FACTORY =
new ModelFactory()
{
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;
}
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 = new Character(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);
}
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);
}
public boolean isEmpty() {
return map.isEmpty();
}
public int size() {
return map.size();
}
public TemplateCollectionModel keys() {
return new CollectionAndSequence(new SimpleSequence(map.keySet(), getObjectWrapper()));
}
public TemplateCollectionModel values() {
return new CollectionAndSequence(new SimpleSequence(map.values(), getObjectWrapper()));
}
public Object getAdaptedObject(Class hint) {
return map;
}
public Object getWrappedObject() {
return map;
}
}