com.sun.faces.facelets.el.CompositeFunctionMapper Maven / Gradle / Ivy
/*
* Copyright (c) 1997, 2018 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0, which is available at
* http://www.eclipse.org/legal/epl-2.0.
*
* This Source Code may also be made available under the following Secondary
* Licenses when the conditions for such availability set forth in the
* Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
* version 2 with the GNU Classpath Exception, which is available at
* https://www.gnu.org/software/classpath/license.html.
*
* SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
*/
package com.sun.faces.facelets.el;
import javax.el.FunctionMapper;
import java.lang.reflect.Method;
/**
* Composite FunctionMapper that attempts to load the Method from the first
* FunctionMapper, then the second if null.
*
* @see javax.el.FunctionMapper
* @see java.lang.reflect.Method
*
* @author Jacob Hookom
* @version $Id$
*/
public final class CompositeFunctionMapper extends FunctionMapper {
private final FunctionMapper fn0;
private final FunctionMapper fn1;
public CompositeFunctionMapper(FunctionMapper fn0, FunctionMapper fn1) {
this.fn0 = fn0;
this.fn1 = fn1;
}
/**
* @see javax.el.FunctionMapper#resolveFunction(java.lang.String, java.lang.String)
*/
@Override
public Method resolveFunction(String prefix, String name) {
Method m = this.fn0.resolveFunction(prefix, name);
if (m == null) {
return this.fn1.resolveFunction(prefix, name);
}
return m;
}
}