70 lines
2.1 KiB
Java
70 lines
2.1 KiB
Java
/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.apache.el.lang;
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import java.lang.reflect.Method;
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import javax.el.FunctionMapper;
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/**
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* @author Jacob Hookom [jacob@hookom.net]
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*/
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public class FunctionMapperFactory extends FunctionMapper {
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protected FunctionMapperImpl memento = null;
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protected final FunctionMapper target;
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public FunctionMapperFactory(FunctionMapper mapper) {
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if (mapper == null) {
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throw new NullPointerException("FunctionMapper target cannot be null");
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}
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this.target = mapper;
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}
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/* (non-Javadoc)
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* @see javax.el.FunctionMapper#resolveFunction(java.lang.String, java.lang.String)
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*/
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@Override
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public Method resolveFunction(String prefix, String localName) {
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if (this.memento == null) {
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this.memento = new FunctionMapperImpl();
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}
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Method m = this.target.resolveFunction(prefix, localName);
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if (m != null) {
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this.memento.mapFunction(prefix, localName, m);
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}
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return m;
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}
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@Override
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public void mapFunction(String prefix, String localName, Method method) {
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if (this.memento == null) {
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this.memento = new FunctionMapperImpl();
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}
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memento.mapFunction(prefix, localName, method);
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}
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public FunctionMapper create() {
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return this.memento;
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}
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}
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