org.primefaces.component.importconstants.ConstantsHashMap Maven / Gradle / Ivy
/*
* Copyright 2009-2014 PrimeTek.
*
* 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 org.primefaces.component.importconstants;
import java.util.HashMap;
import javax.faces.FacesException;
/**
* Custom {@link HashMap} which throws an {@link FacesException} if the key/constant does not exist.
*
* @param The key type.
* @param The value type.
*/
public class ConstantsHashMap extends HashMap {
private final Class clazz;
public ConstantsHashMap(Class clazz) {
this.clazz = clazz;
}
@Override
public V get(Object key) {
if (!containsKey(key)) {
throw new FacesException("Class " + clazz.getName() + " does not contain the constant " + key);
}
return super.get(key);
}
}