freemarker.ext.beans._EnumModels Maven / Gradle / Ivy
/*
* 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.LinkedHashMap;
import java.util.Map;
import freemarker.template.TemplateModel;
/**
* Don't use this class; it's only public to work around Google App Engine Java
* compliance issues. FreeMarker developers only: treat this class as package-visible.
*/
public class _EnumModels extends ClassBasedModelFactory {
public _EnumModels(BeansWrapper wrapper) {
super(wrapper);
}
@Override
protected TemplateModel createModel(Class clazz) {
Object[] obj = clazz.getEnumConstants();
if (obj == null) {
// Return null - it'll manifest itself as undefined in the template.
// We're doing this rather than throw an exception as this way
// people can use someEnumModel?default({}) to gracefully fall back
// to an empty hash if they want to.
return null;
}
Map map = new LinkedHashMap();
for (int i = 0; i < obj.length; i++) {
Enum value = (Enum) obj[i];
map.put(value.name(), value);
}
return new SimpleMapModel(map, getWrapper());
}
}