KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > com > caucho > config > EnvironmentTypeStrategy


1 /*
2  * Copyright (c) 1998-2006 Caucho Technology -- all rights reserved
3  *
4  * This file is part of Resin(R) Open Source
5  *
6  * Each copy or derived work must preserve the copyright notice and this
7  * notice unmodified.
8  *
9  * Resin Open Source is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License as published by
11  * the Free Software Foundation; either version 2 of the License, or
12  * (at your option) any later version.
13  *
14  * Resin Open Source is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
17  * of NON-INFRINGEMENT. See the GNU General Public License for more
18  * details.
19  *
20  * You should have received a copy of the GNU General Public License
21  * along with Resin Open Source; if not, write to the
22  *
23  * Free Software Foundation, Inc.
24  * 59 Temple Place, Suite 330
25  * Boston, MA 02111-1307 USA
26  *
27  * @author Scott Ferguson
28  */
29
30 package com.caucho.config;
31
32 import com.caucho.el.EnvironmentLevelELResolver;
33 import com.caucho.loader.Environment;
34 import com.caucho.loader.EnvironmentBean;
35 import com.caucho.vfs.Dependency;
36 import com.caucho.xml.QName;
37
38 import org.w3c.dom.Node JavaDoc;
39
40 import java.util.ArrayList JavaDoc;
41
42 public class EnvironmentTypeStrategy extends BeanTypeStrategy {
43   EnvironmentTypeStrategy(Class JavaDoc type)
44   {
45     super(type);
46   }
47
48   public void configureBean(NodeBuilder builder, Object JavaDoc bean, Node JavaDoc node)
49     throws Exception JavaDoc
50   {
51     Thread JavaDoc thread = Thread.currentThread();
52     ClassLoader JavaDoc oldLoader = thread.getContextClassLoader();
53
54     try {
55       EnvironmentBean envBean = (EnvironmentBean) bean;
56       ClassLoader JavaDoc loader = envBean.getClassLoader();
57
58       thread.setContextClassLoader(loader);
59
60       builder.getELContext().push(EnvironmentLevelELResolver.create(loader));
61       // XXX: builder.setClassLoader?
62
63       addDependencies(builder, node);
64
65       super.configureBean(builder, bean, node);
66     } finally {
67       builder.getELContext().pop();
68       
69       thread.setContextClassLoader(oldLoader);
70     }
71   }
72
73   public void configureAttribute(NodeBuilder builder, Object JavaDoc bean, Node JavaDoc attr)
74          throws Exception JavaDoc
75   {
76     Thread JavaDoc thread = Thread.currentThread();
77     ClassLoader JavaDoc oldLoader = thread.getContextClassLoader();
78
79     try {
80       EnvironmentBean envBean = (EnvironmentBean) bean;
81       thread.setContextClassLoader(envBean.getClassLoader());
82       // XXX: builder.setClassLoader?
83
84       addDependencies(builder, attr);
85
86       super.configureAttribute(builder, bean, attr);
87     } finally {
88       thread.setContextClassLoader(oldLoader);
89     }
90   }
91
92   /**
93    * Adds dependencies from the DOM to the environment.
94    *
95    * @param builder the builder context
96    * @param node the configuration node
97    */
98   private void addDependencies(NodeBuilder builder, Node JavaDoc node)
99   {
100     ArrayList JavaDoc<Dependency> dependencyList = builder.getDependencyList(node);
101
102     if (dependencyList != null) {
103       for (Dependency dependency : dependencyList) {
104         Environment.addDependency(dependency);
105       }
106     }
107   }
108
109   /**
110    * Returns the attribute builder.
111    */
112   public AttributeStrategy getEnvironmentAttribute(QName name)
113     throws Exception JavaDoc
114   {
115     return TypeStrategyFactory.getEnvironmentAttribute(getType(), name);
116   }
117 }
118
Popular Tags