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: ElemApplyImport.java 468643 2006-10-28 06:56:03Z minchau $
20  */
21 package org.apache.xalan.templates;
22 
23 import javax.xml.transform.TransformerException;
24 
25 import org.apache.xalan.res.XSLTErrorResources;
26 import org.apache.xalan.transformer.TransformerImpl;
27 import org.apache.xml.dtm.DTM;
28 
29 /**
30  * Implement xsl:apply-imports.
31  * <pre>
32  * <!ELEMENT xsl:apply-imports EMPTY>
33  * </pre>
34  * @see <a href="http://www.w3.org/TR/xslt#apply-imports">apply-imports in XSLT Specification</a>
35  * @xsl.usage advanced
36  */
37 public class ElemApplyImport extends ElemTemplateElement
38 {
39     static final long serialVersionUID = 3764728663373024038L;
40 
41   /**
42    * Get an int constant identifying the type of element.
43    * @see org.apache.xalan.templates.Constants
44    *
45    * @return Token ID for xsl:apply-imports element types
46    */
getXSLToken()47   public int getXSLToken()
48   {
49     return Constants.ELEMNAME_APPLY_IMPORTS;
50   }
51 
52   /**
53    * Return the node name.
54    *
55    * @return Element name
56    */
getNodeName()57   public String getNodeName()
58   {
59     return Constants.ELEMNAME_APPLY_IMPORTS_STRING;
60   }
61 
62   /**
63    * Execute the xsl:apply-imports transformation.
64    *
65    * @param transformer non-null reference to the the current transform-time state.
66    *
67    * @throws TransformerException
68    */
execute( TransformerImpl transformer)69   public void execute(
70           TransformerImpl transformer)
71             throws TransformerException
72   {
73 
74     if (transformer.currentTemplateRuleIsNull())
75     {
76       transformer.getMsgMgr().error(this,
77         XSLTErrorResources.ER_NO_APPLY_IMPORT_IN_FOR_EACH);  //"xsl:apply-imports not allowed in a xsl:for-each");
78     }
79 
80     int sourceNode = transformer.getXPathContext().getCurrentNode();
81     if (DTM.NULL != sourceNode)
82     {
83       // supply the current templated (matched, not named)
84       ElemTemplate matchTemplate = transformer.getMatchedTemplate();
85       transformer.applyTemplateToNode(this, matchTemplate, sourceNode);
86     }
87     else  // if(null == sourceNode)
88     {
89       transformer.getMsgMgr().error(this,
90         XSLTErrorResources.ER_NULL_SOURCENODE_APPLYIMPORTS);  //"sourceNode is null in xsl:apply-imports!");
91     }
92   }
93 
94   /**
95    * Add a child to the child list.
96    * <!ELEMENT xsl:apply-imports EMPTY>
97    *
98    * @param newChild New element to append to this element's children list
99    *
100    * @return null, xsl:apply-Imports cannot have children
101    */
appendChild(ElemTemplateElement newChild)102   public ElemTemplateElement appendChild(ElemTemplateElement newChild)
103   {
104 
105     error(XSLTErrorResources.ER_CANNOT_ADD,
106           new Object[]{ newChild.getNodeName(),
107                         this.getNodeName() });  //"Can not add " +((ElemTemplateElement)newChild).m_elemName +
108 
109     //" to " + this.m_elemName);
110     return null;
111   }
112 }
113