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This is the master POM file for Oracle's Implementation of the JSF 2.2 Specification.
There is a newer version: 2.2.20
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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: CompositeFunctionMapper.java 8641 2010-10-04 20:54:50Z edburns $
 */
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)
     */
    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;
    }

}