001    /**
002     *
003     * Copyright 2003-2004 The Apache Software Foundation
004     *
005     *  Licensed under the Apache License, Version 2.0 (the "License");
006     *  you may not use this file except in compliance with the License.
007     *  You may obtain a copy of the License at
008     *
009     *     http://www.apache.org/licenses/LICENSE-2.0
010     *
011     *  Unless required by applicable law or agreed to in writing, software
012     *  distributed under the License is distributed on an "AS IS" BASIS,
013     *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     *  See the License for the specific language governing permissions and
015     *  limitations under the License.
016     */
017    
018    //
019    // This source code implements specifications defined by the Java
020    // Community Process. In order to remain compliant with the specification
021    // DO NOT add / change / or delete method signatures!
022    //
023    
024    package javax.servlet.jsp.el;
025    
026    /**
027     * <p>The interface to a map between EL function names and methods.</p>
028     *
029     * <p>Classes implementing this interface may, for instance, consult tag library
030     * information to resolve the map. </p>
031     *
032     * @since 2.0
033     */
034    public interface FunctionMapper {
035      /**
036       * Resolves the specified local name and prefix into a Java.lang.Method.
037       * Returns null if the prefix and local name are not found.
038       * 
039       * @param prefix the prefix of the function, or "" if no prefix.
040       * @param localName the short name of the function
041       * @return the result of the method mapping.  Null means no entry found.
042       **/
043      public java.lang.reflect.Method resolveFunction(String prefix, 
044          String localName);
045    }