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 38 public boolean functionAvailable(String ns, String funcName) 39 throws javax.xml.transform.TransformerException; 40 41 /** 42 * Is the extension element available? 43 */ 44 public boolean elementAvailable(String ns, String elemName) 45 throws javax.xml.transform.TransformerException; 46 47 /** 48 * Execute the extension function. 49 */ 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 */ 57 public Object extFunction(FuncExtFunction extFunction, 58 Vector argVec) 59 throws javax.xml.transform.TransformerException; 60 } 61
