1/*
2 * reserved comment block
3 * DO NOT REMOVE OR ALTER!
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
22package com.sun.org.apache.xpath.internal.functions;
23
24import com.sun.org.apache.xml.internal.dtm.DTM;
25import com.sun.org.apache.xpath.internal.XPathContext;
26import com.sun.org.apache.xpath.internal.objects.XObject;
27import com.sun.org.apache.xpath.internal.objects.XString;
28
29/**
30 * Execute the proprietary document-location() function, which returns
31 * a node set of documents.
32 * @xsl.usage advanced
33 */
34public class FuncDoclocation extends FunctionDef1Arg
35{
36    static final long serialVersionUID = 7469213946343568769L;
37
38  /**
39   * Execute the function.  The function must return
40   * a valid object.
41   * @param xctxt The current execution context.
42   * @return A valid XObject.
43   *
44   * @throws javax.xml.transform.TransformerException
45   */
46  public XObject execute(XPathContext xctxt) throws javax.xml.transform.TransformerException
47  {
48
49    int whereNode = getArg0AsNode(xctxt);
50    String fileLocation = null;
51
52    if (DTM.NULL != whereNode)
53    {
54      DTM dtm = xctxt.getDTM(whereNode);
55
56      // %REVIEW%
57      if (DTM.DOCUMENT_FRAGMENT_NODE ==  dtm.getNodeType(whereNode))
58      {
59        whereNode = dtm.getFirstChild(whereNode);
60      }
61
62      if (DTM.NULL != whereNode)
63      {
64        fileLocation = dtm.getDocumentBaseURI();
65//        int owner = dtm.getDocument();
66//        fileLocation = xctxt.getSourceTreeManager().findURIFromDoc(owner);
67      }
68    }
69
70    return new XString((null != fileLocation) ? fileLocation : "");
71  }
72}
73