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/*
* 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 org.apache.el.lang;
import java.lang.reflect.Method;
import javax.el.FunctionMapper;
/**
* @author Jacob Hookom [jacob@hookom.net]
* @version $Id: FunctionMapperFactory.java 939519 2010-04-30 00:12:23Z kkolinko $
*/
public class FunctionMapperFactory extends FunctionMapper {
protected FunctionMapperImpl memento = null;
protected FunctionMapper target;
public FunctionMapperFactory(FunctionMapper mapper) {
if (mapper == null) {
throw new NullPointerException("FunctionMapper target cannot be null");
}
this.target = mapper;
}
/* (non-Javadoc)
* @see javax.el.FunctionMapper#resolveFunction(java.lang.String, java.lang.String)
*/
public Method resolveFunction(String prefix, String localName) {
if (this.memento == null) {
this.memento = new FunctionMapperImpl();
}
Method m = this.target.resolveFunction(prefix, localName);
if (m != null) {
this.memento.addFunction(prefix, localName, m);
}
return m;
}
public FunctionMapper create() {
return this.memento;
}
}
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