1 /*
2 *
3 * ====================================================================
4 *
5 * The Apache Software License, Version 1.1
6 *
7 * Copyright (c) 1999 The Apache Software Foundation. All rights
8 * reserved.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 *
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 *
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in
19 * the documentation and/or other materials provided with the
20 * distribution.
21 *
22 * 3. The end-user documentation included with the redistribution, if
23 * any, must include the following acknowlegement:
24 * "This product includes software developed by the
25 * Apache Software Foundation (http://www.apache.org/)."
26 * Alternately, this acknowlegement may appear in the software itself,
27 * if and wherever such third-party acknowlegements normally appear.
28 *
29 * 4. The names "The Jakarta Project", "Tomcat", and "Apache Software
30 * Foundation" must not be used to endorse or promote products derived
31 * from this software without prior written permission. For written
32 * permission, please contact apache@apache.org.
33 *
34 * 5. Products derived from this software may not be called "Apache"
35 * nor may "Apache" appear in their names without prior written
36 * permission of the Apache Group.
37 *
38 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
39 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
40 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
41 * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
42 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
43 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
44 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
45 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
46 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
47 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
48 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
49 * SUCH DAMAGE.
50 * ====================================================================
51 *
52 * This software consists of voluntary contributions made by many
53 * individuals on behalf of the Apache Software Foundation. For more
54 * information on the Apache Software Foundation, please see
55 * <http://www.apache.org/>.
56 *
57 */
58
59 package org.apache.commons.jelly.tags.werkz;
60
61 import com.werken.werkz.Goal;
62 import com.werken.werkz.Action;
63 import com.werken.werkz.DefaultAction;
64 import com.werken.werkz.CyclicGoalChainException;
65
66 import java.util.Iterator;
67 import java.util.List;
68 import java.util.StringTokenizer;
69
70 import org.apache.commons.jelly.JellyException;
71 import org.apache.commons.jelly.XMLOutput;
72
73 import org.apache.commons.logging.Log;
74 import org.apache.commons.logging.LogFactory;
75
76 /***
77 * Implements a <target> tag which is similar to the Ant equivalent tag
78 * but is based on the Werkz goal engine.
79 *
80 * @author <a href="mailto:jstrachan@apache.org">James Strachan</a>
81 * @version $Revision: 1.6 $
82 */
83 public class GoalTag extends WerkzTagSupport {
84
85 /*** The Log to which logging calls will be made. */
86 private Log log = LogFactory.getLog(GoalTag.class);
87
88 /*** the name of the target */
89 private String name;
90
91 private String prereqs;
92
93 private String description;
94
95 public GoalTag() {
96 }
97
98
99 // Tag interface
100 //-------------------------------------------------------------------------
101
102 /***
103 * Evaluate the body to register all the various goals and pre/post conditions
104 * then run all the current targets
105 */
106 public void doTag(final XMLOutput output) throws Exception {
107
108 log.debug("doTag(..):" + name);
109
110 Goal goal = getProject().getGoal( getName(),
111 true );
112
113 goal.setDescription( this.description );
114 addPrereqs( goal );
115
116 Action action = new DefaultAction() {
117 public void performAction() throws Exception {
118 log.debug("Running action of target: " + getName() );
119 invokeBody(output);
120 }
121 };
122
123 goal.setAction( action );
124 }
125
126
127 // Properties
128 //-------------------------------------------------------------------------
129 /***
130 * @return the name of the target
131 */
132 public String getName() {
133 return name;
134 }
135
136 /***
137 * Sets the name of the target
138 */
139 public void setName(String name) {
140 log.debug("setName(" + name + ")" );
141 this.name = name;
142 }
143
144 public void setPrereqs(String prereqs) {
145 this.prereqs = prereqs;
146 }
147
148 public String getPrereqs() {
149 return this.prereqs;
150 }
151
152 public void setDescription(String description) {
153 this.description = description;
154 }
155
156
157 protected void addPrereqs(Goal goal) throws CyclicGoalChainException
158 {
159 String prereqs = getPrereqs();
160
161 if ( prereqs == null )
162 {
163 return;
164 }
165
166 StringTokenizer tokens = new StringTokenizer( getPrereqs(),
167 "," );
168
169 String eachToken = null;
170 Goal eachPrereq = null;
171
172 while ( tokens.hasMoreTokens() )
173 {
174 eachToken = tokens.nextToken().trim();
175
176 eachPrereq = getProject().getGoal( eachToken, true );
177
178 goal.addPrerequisite( eachPrereq );
179 }
180 }
181 }
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