01 /*
02 * Copyright 2004 The Apache Software Foundation
03 *
04 * Licensed under the Apache License, Version 2.0 (the "License");
05 * you may not use this file except in compliance with the License.
06 * You may obtain a copy of the License at
07 *
08 * http://www.apache.org/licenses/LICENSE-2.0
09 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 package javax.servlet.jsp.el;
18
19 /**
20 * <p>The interface to a map between EL function names and methods.</p>
21 *
22 * <p>Classes implementing this interface may, for instance, consult tag library
23 * information to resolve the map. </p>
24 *
25 * @since 2.0
26 */
27 public interface FunctionMapper {
28 /**
29 * Resolves the specified local name and prefix into a Java.lang.Method.
30 * Returns null if the prefix and local name are not found.
31 *
32 * @param prefix the prefix of the function, or "" if no prefix.
33 * @param localName the short name of the function
34 * @return the result of the method mapping. Null means no entry found.
35 **/
36 public java.lang.reflect.Method resolveFunction(String prefix,
37 String localName);
38 }
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