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Java > Open Source Codes > org > apache > cactus > integration > ant > deployment > webapp > DefaultWarArchive


1 /*
2  * ========================================================================
3  *
4  * Copyright 2003 The Apache Software Foundation.
5  *
6  * Licensed 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  */
20 package org.apache.cactus.integration.ant.deployment.webapp;
21
22 import java.io.File JavaDoc;
23 import java.io.IOException JavaDoc;
24 import java.io.InputStream JavaDoc;
25 import java.util.Iterator JavaDoc;
26 import java.util.List JavaDoc;
27
28 import javax.xml.parsers.ParserConfigurationException JavaDoc;
29
30 import org.apache.cactus.integration.ant.deployment.DefaultJarArchive;
31 import org.apache.cactus.integration.ant.deployment.JarArchive;
32 import org.xml.sax.SAXException JavaDoc;
33
34 /**
35  * Class that encapsulates access to a WAR.
36  *
37  * @since Cactus 1.5
38  * @version $Id: DefaultWarArchive.java,v 1.1 2004/05/31 20:05:23 vmassol Exp $
39  */
40 public class DefaultWarArchive extends DefaultJarArchive implements WarArchive
41 {
42     // Instance Variables ------------------------------------------------------
43
44     /**
45      * The parsed deployment descriptor.
46      */
47     private WebXml webXml;
48
49     // Constructors ------------------------------------------------------------
50
51     /**
52      * Constructor.
53      *
54      * @param theFile The web application archive
55      * @throws IOException If there was a problem reading the WAR
56      */
57     public DefaultWarArchive(File JavaDoc theFile)
58         throws IOException JavaDoc
59     {
60         super(theFile);
61     }
62
63     /**
64      * Constructor.
65      *
66      * @param theInputStream The input stream for the web application archive
67      * @throws IOException If there was a problem reading the WAR
68      */
69     public DefaultWarArchive(InputStream JavaDoc theInputStream)
70         throws IOException JavaDoc
71     {
72         super(theInputStream);
73     }
74
75     // Public Methods ----------------------------------------------------------
76
77     /**
78      * @see WarArchive#getWebXml()
79      */
80     public final WebXml getWebXml()
81         throws IOException JavaDoc, SAXException JavaDoc, ParserConfigurationException JavaDoc
82     {
83         if (this.webXml == null)
84         {
85             InputStream JavaDoc in = null;
86             try
87             {
88                 in = getResource("WEB-INF/web.xml");
89                 if (in != null)
90                 {
91                     this.webXml = WebXmlIo.parseWebXml(in, null);
92                 }
93             }
94             finally
95             {
96                 if (in != null)
97                 {
98                     in.close();
99                 }
100             }
101         }
102         return this.webXml;
103     }
104
105     /**
106      * Returns whether a class of the specified name is contained in the web-app
107      * archive, either directly in WEB-INF/classes, or in one of the JARs in
108      * WEB-INF/lib.
109      *
110      * @param theClassName The name of the class to search for
111      * @return Whether the class was found in the archive
112      * @throws IOException If an I/O error occurred reading the archive
113      */
114     public final boolean containsClass(String JavaDoc theClassName)
115         throws IOException JavaDoc
116     {
117         // Look in WEB-INF/classes first
118 String JavaDoc resourceName =
119             "WEB-INF/classes/" + theClassName.replace('.', '/') + ".class";
120         if (getResource(resourceName) != null)
121         {
122             return true;
123         }
124
125         // Next scan the JARs in WEB-INF/lib
126 List JavaDoc jars = getResources("WEB-INF/lib/");
127         for (Iterator JavaDoc i = jars.iterator(); i.hasNext();)
128         {
129             JarArchive jar = new DefaultJarArchive(
130                 getResource((String JavaDoc) i.next()));
131             if (jar.containsClass(theClassName))
132             {
133                 return true;
134             }
135         }
136
137         return false;
138     }
139
140 }
141
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