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org.apache.commons.jelly.tags.jsl.ApplyTemplatesTag	73%	100%

1		/*
2		* Copyright 2002,2004 The Apache Software Foundation.
3		*
4		* Licensed under the Apache License, Version 2.0 (the "License");
5		* you may not use this file except in compliance with the License.
6		* You may obtain a copy of the License at
7		*
8		* http://www.apache.org/licenses/LICENSE-2.0
9		*
10		* Unless required by applicable law or agreed to in writing, software
11		* distributed under the License is distributed on an "AS IS" BASIS,
12		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13		* See the License for the specific language governing permissions and
14		* limitations under the License.
15		*/
16		package org.apache.commons.jelly.tags.jsl;
17
18		import org.apache.commons.jelly.JellyTagException;
19		import org.apache.commons.jelly.TagSupport;
20		import org.apache.commons.jelly.XMLOutput;
21		import org.apache.commons.logging.Log;
22		import org.apache.commons.logging.LogFactory;
23		import org.dom4j.rule.Stylesheet;
24		import org.jaxen.XPath;
25
26		/**
27		* Implements the apply templates function in the stylesheet, similar to the XSLT equivalent.
28		* a JSP include.
29		*
30		* @author <a href="mailto:jstrachan@apache.org">James Strachan</a>
31		* @version $Revision: 155420 $
32		*/
33		public class ApplyTemplatesTag extends TagSupport {
34
35		/** The Log to which logging calls will be made. */
36	39	private Log log = LogFactory.getLog(ApplyTemplatesTag.class);
37
38		/** Holds value of property mode. */
39		private String mode;
40
41		/** Holds the XPath object */
42		private XPath select;
43
44
45	27	public ApplyTemplatesTag() {
46	27	}
47
48		// Tag interface
49		//-------------------------------------------------------------------------
50		/** By default just evaluate the body */
51		public void doTag(XMLOutput output) throws JellyTagException {
52	33	StylesheetTag tag = (StylesheetTag) findAncestorWithClass( StylesheetTag.class );
53	33	if (tag == null) {
54	0	throw new JellyTagException(
55		"<applyTemplates> tag must be inside a <stylesheet> tag"
56		);
57		}
58	33	Stylesheet stylesheet = tag.getStylesheet();
59
60	33	XMLOutput oldOutput = tag.getStylesheetOutput();
61	33	tag.setStylesheetOutput(output);
62
63	33	Object source = tag.getXPathSource();
64		// for some reason, these DOM4J methods only throw Exception
65		try {
66	33	if ( select != null ) {
67	0	stylesheet.applyTemplates( source, select, mode );
68		}
69		else {
70	33	stylesheet.applyTemplates( source, mode );
71		}
72		}
73	0	catch (Exception e) {
74	0	throw new JellyTagException(e);
75	33	}
76
77	33	tag.setStylesheetOutput(oldOutput);
78
79		// #### should support MODE!!!
80
81	33	}
82
83		// Properties
84		//-------------------------------------------------------------------------
85
86		public void setSelect( XPath select ) {
87	0	this.select = select;
88	0	}
89
90		/** Sets the mode.
91		* @param mode New value of property mode.
92		*/
93		public void setMode(String mode) {
94	3	this.mode = mode;
95	3	}
96		}

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