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org.apache.commons.jelly.tags.jsl.TemplateTag$1	80%	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
17		package org.apache.commons.jelly.tags.jsl;
18
19		import org.apache.commons.jelly.JellyTagException;
20		import org.apache.commons.jelly.TagSupport;
21		import org.apache.commons.jelly.XMLOutput;
22		import org.apache.commons.jelly.xpath.XPathSource;
23		import org.apache.commons.logging.Log;
24		import org.apache.commons.logging.LogFactory;
25		import org.dom4j.Node;
26		import org.dom4j.rule.Action;
27		import org.dom4j.rule.Pattern;
28		import org.dom4j.rule.Rule;
29
30		/**
31		* This tag represents a declarative matching rule, similar to the template tag in XSLT.
32		*
33		* @author <a href="mailto:jstrachan@apache.org">James Strachan</a>
34		* @version $Revision: 155420 $
35		*/
36		public class TemplateTag extends TagSupport implements XPathSource {
37
38		/** The Log to which logging calls will be made. */
39		private Log log = LogFactory.getLog(TemplateTag.class);
40
41
42		/** Holds value of property name. */
43		private String name;
44
45		/** Holds value of property mode. */
46		private String mode;
47
48		/** Holds value of property priority. */
49		private double priority;
50
51		/** The pattern to match */
52		private Pattern match;
53
54		/** The source XPath context for any child tags */
55		private Object xpathSource;
56
57
58		public TemplateTag() {
59		}
60
61
62		// Tag interface
63		//-------------------------------------------------------------------------
64		public void doTag(XMLOutput output) throws JellyTagException {
65		StylesheetTag tag = (StylesheetTag) findAncestorWithClass( StylesheetTag.class );
66		if (tag == null) {
67		throw new JellyTagException( "This <template> tag must be used inside a <stylesheet> tag" );
68		}
69
70		if ( log.isDebugEnabled() ) {
71		log.debug( "adding template rule for match: " + match );
72		}
73
74		Rule rule = createRule(tag, output);
75		if ( rule != null && tag != class="keyword">null) {
76		rule.setMode( mode );
77		tag.addTemplate( rule );
78		}
79		}
80
81		// XPathSource interface
82		//-------------------------------------------------------------------------
83
84		/**
85		* @return the current XPath value on which relative paths are evaluated
86		*/
87		public Object getXPathSource() {
88		return xpathSource;
89		}
90
91
92		// Properties
93		//-------------------------------------------------------------------------
94
95		public void setMatch(Pattern match) {
96		this.match = match;
97		}
98
99		/** Getter for property priority.
100		* @return Value of property priority.
101		*/
102		public double getPriority() {
103		return priority;
104		}
105
106		/** Sets the priority.
107		* @param priority New value of property priority.
108		*/
109		public void setPriority(double priority) {
110		this.priority = priority;
111		}
112
113		/** Getter for property name.
114		* @return Value of property name.
115		*/
116		public String getName() {
117		return name;
118		}
119
120		/** Sets the name.
121		* @param name New value of property name.
122		*/
123		public void setName(String name) {
124		this.name = name;
125		}
126
127
128		/** Sets the mode.
129		* @param mode New value of property mode.
130		*/
131		public void setMode(String mode) {
132		this.mode = mode;
133		}
134
135
136		// Implementation methods
137		//-------------------------------------------------------------------------
138		protected Rule createRule(StylesheetTag tag, XMLOutput output) {
139		return new Rule( match, createAction(tag, output) );
140		}
141
142		protected Action createAction(final StylesheetTag tag, class="keyword">final XMLOutput output) {
143		return new Action() {
144	72	public void run(Node node) throws Exception {
145
146		// store the context for use by applyTemplates tag
147	51	tag.setXPathSource( node );
148
149	51	xpathSource = node;
150
151	51	if (log.isDebugEnabled()) {
152	0	log.debug( "Firing template body for match: " + match + " and node: " + node );
153		}
154
155	51	XMLOutput actualOutput = tag.getStylesheetOutput();
156	51	if (actualOutput == null) {
157	0	actualOutput = output;
158		}
159
160	51	invokeBody(actualOutput);
161	48	}
162		};
163		}
164		}

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