1 /*
   2  * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
   3  * @LastModified: Oct 2017
   4  */
   5 /*
   6  * Licensed to the Apache Software Foundation (ASF) under one or more
   7  * contributor license agreements.  See the NOTICE file distributed with
   8  * this work for additional information regarding copyright ownership.
   9  * The ASF licenses this file to You under the Apache License, Version 2.0
  10  * (the "License"); you may not use this file except in compliance with
  11  * the License.  You may obtain a copy of the License at
  12  *
  13  *      http://www.apache.org/licenses/LICENSE-2.0
  14  *
  15  * Unless required by applicable law or agreed to in writing, software
  16  * distributed under the License is distributed on an "AS IS" BASIS,
  17  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  18  * See the License for the specific language governing permissions and
  19  * limitations under the License.
  20  */
  21 
  22 package com.sun.org.apache.xpath.internal;
  23 
  24 import com.sun.org.apache.xpath.internal.functions.FuncExtFunction;
  25 import com.sun.org.apache.xpath.internal.objects.XObject;
  26 import java.util.List;
  27 
  28 /**
  29  * Interface that XPath objects can call to obtain access to an
  30  * ExtensionsTable.
  31  *
  32  */
  33 public interface ExtensionsProvider
  34 {
  35   /**
  36    * Is the extension function available?
  37    */
  38 
  39   public boolean functionAvailable(String ns, String funcName)
  40           throws javax.xml.transform.TransformerException;
  41 
  42   /**
  43    * Is the extension element available?
  44    */
  45   public boolean elementAvailable(String ns, String elemName)
  46           throws javax.xml.transform.TransformerException;
  47 
  48   /**
  49    * Execute the extension function.
  50    */
  51   public Object extFunction(String ns, String funcName, List<XObject> argVec,
  52           Object methodKey)
  53             throws javax.xml.transform.TransformerException;
  54 
  55   /**
  56    * Execute the extension function.
  57    */
  58   public Object extFunction(FuncExtFunction extFunction, List<XObject> argVec)
  59             throws javax.xml.transform.TransformerException;
  60 }