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1   /**
2    *
3    * Copyright 2003-2004 The Apache Software Foundation
4    *
5    *  Licensed under the Apache License, Version 2.0 (the "License");
6    *  you may not use this file except in compliance with the License.
7    *  You may obtain a copy of the License at
8    *
9    *     http://www.apache.org/licenses/LICENSE-2.0
10   *
11   *  Unless required by applicable law or agreed to in writing, software
12   *  distributed under the License is distributed on an "AS IS" BASIS,
13   *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   *  See the License for the specific language governing permissions and
15   *  limitations under the License.
16   */
17  
18  //
19  // This source code implements specifications defined by the Java
20  // Community Process. In order to remain compliant with the specification
21  // DO NOT add / change / or delete method signatures!
22  //
23  
24  package javax.servlet.jsp.el;
25  
26  /**
27   * <p>The interface to a map between EL function names and methods.</p>
28   *
29   * <p>Classes implementing this interface may, for instance, consult tag library
30   * information to resolve the map. </p>
31   *
32   * @since 2.0
33   */
34  public interface FunctionMapper {
35    /**
36     * Resolves the specified local name and prefix into a Java.lang.Method.
37     * Returns null if the prefix and local name are not found.
38     * 
39     * @param prefix the prefix of the function, or "" if no prefix.
40     * @param localName the short name of the function
41     * @return the result of the method mapping.  Null means no entry found.
42     **/
43    public java.lang.reflect.Method resolveFunction(String prefix, 
44        String localName);
45  }