1 /*
2  * Licensed to the Apache Software Foundation (ASF) under one
3  * or more contributor license agreements. See the NOTICE file
4  * distributed with this work for additional information
5  * regarding copyright ownership. The ASF licenses this file
6  * to you under the Apache License, Version 2.0 (the  "License");
7  * you may not use this file except in compliance with the License.
8  * You may obtain a copy of the License at
9  *
10  *     http://www.apache.org/licenses/LICENSE-2.0
11  *
12  * Unless required by applicable law or agreed to in writing, software
13  * distributed under the License is distributed on an "AS IS" BASIS,
14  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15  * See the License for the specific language governing permissions and
16  * limitations under the License.
17  */
18 /*
19  * $Id: ExtensionsProvider.java 468655 2006-10-28 07:12:06Z minchau $
20  */
21 package org.apache.xpath;
22 
23 import java.util.Vector;
24 
25 import org.apache.xpath.functions.FuncExtFunction;
26 
27 /**
28  * Interface that XPath objects can call to obtain access to an
29  * ExtensionsTable.
30  *
31  */
32 public interface ExtensionsProvider
33 {
34   /**
35    * Is the extension function available?
36    */
37 
functionAvailable(String ns, String funcName)38   public boolean functionAvailable(String ns, String funcName)
39           throws javax.xml.transform.TransformerException;
40 
41   /**
42    * Is the extension element available?
43    */
elementAvailable(String ns, String elemName)44   public boolean elementAvailable(String ns, String elemName)
45           throws javax.xml.transform.TransformerException;
46 
47   /**
48    * Execute the extension function.
49    */
extFunction(String ns, String funcName, Vector argVec, Object methodKey)50   public Object extFunction(String ns, String funcName,
51                             Vector argVec, Object methodKey)
52             throws javax.xml.transform.TransformerException;
53 
54   /**
55    * Execute the extension function.
56    */
extFunction(FuncExtFunction extFunction, Vector argVec)57   public Object extFunction(FuncExtFunction extFunction,
58                             Vector argVec)
59             throws javax.xml.transform.TransformerException;
60 }
61