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Java > Open Source Codes > org > jboss > injection > JndiMethodInjector


1 /*
2   * JBoss, Home of Professional Open Source
3   * Copyright 2005, JBoss Inc., and individual contributors as indicated
4   * by the @authors tag. See the copyright.txt in the distribution for a
5   * full listing of individual contributors.
6   *
7   * This is free software; you can redistribute it and/or modify it
8   * under the terms of the GNU Lesser General Public License as
9   * published by the Free Software Foundation; either version 2.1 of
10   * the License, or (at your option) any later version.
11   *
12   * This software is distributed in the hope that it will be useful,
13   * but WITHOUT ANY WARRANTY; without even the implied warranty of
14   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15   * Lesser General Public License for more details.
16   *
17   * You should have received a copy of the GNU Lesser General Public
18   * License along with this software; if not, write to the Free
19   * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20   * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
21   */
22 package org.jboss.injection;
23
24 import java.lang.reflect.InvocationTargetException JavaDoc;
25 import java.lang.reflect.Method JavaDoc;
26 import javax.naming.Context JavaDoc;
27 import javax.naming.NamingException JavaDoc;
28 import org.jboss.ejb3.BeanContext;
29 import org.jboss.logging.Logger;
30
31 /**
32  * Comment
33  *
34  * @author <a HREF="mailto:bill@jboss.org">Bill Burke</a>
35  * @version $Revision: 58121 $
36  */
37 public class JndiMethodInjector implements Injector, PojoInjector
38 {
39    private static final Logger log = Logger.getLogger(JndiMethodInjector.class);
40    
41    private Method JavaDoc setMethod;
42    private String JavaDoc jndiName;
43    private Context JavaDoc ctx;
44
45    public JndiMethodInjector(Method JavaDoc setMethod, String JavaDoc jndiName, Context JavaDoc ctx)
46    {
47       this.setMethod = setMethod;
48       setMethod.setAccessible(true);
49       this.jndiName = jndiName;
50       this.ctx = ctx;
51    }
52
53    public void inject(BeanContext bctx)
54    {
55       inject(bctx, bctx.getInstance());
56    }
57    
58    public Class JavaDoc getInjectionClass()
59    {
60       return setMethod.getParameterTypes()[0];
61    }
62    
63    protected Object JavaDoc lookup(String JavaDoc jndiName, Class JavaDoc param)
64    {
65       Object JavaDoc dependency = null;
66       
67       try
68       {
69          dependency = ctx.lookup(jndiName);
70       }
71       catch (NamingException JavaDoc e)
72       {
73          e.printStackTrace();
74          throw new RuntimeException JavaDoc("Unable to @Inject jndi dependency: " + jndiName + " into method " + setMethod, e);
75       }
76       return dependency;
77    }
78    
79    public void inject(BeanContext bctx, Object JavaDoc instance)
80    {
81       inject(instance);
82    }
83
84    public void inject(Object JavaDoc instance)
85    {
86       Object JavaDoc dependency = lookup(jndiName, setMethod.getParameterTypes()[0]);
87
88       Object JavaDoc[] args = {dependency};
89       try
90       {
91          setMethod.invoke(instance, args);
92       }
93       catch (IllegalAccessException JavaDoc e)
94       {
95          throw new RuntimeException JavaDoc(e); //To change body of catch statement use Options | File Templates.
96 }
97       catch (IllegalArgumentException JavaDoc e)
98       {
99          String JavaDoc type = "UNKNOWN";
100          if (dependency != null) type = dependency.getClass().getName();
101          throw new RuntimeException JavaDoc("Non matching type for @Inject of setter: " + setMethod + " for type: " + type, e); //To change body of catch statement use Options | File Templates.
102 }
103       catch (InvocationTargetException JavaDoc e)
104       {
105          throw new RuntimeException JavaDoc(e.getCause()); //To change body of catch statement use Options | File Templates.
106 }
107    }
108 }
109
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