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


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 org.jboss.aop.Advisor;
25 import org.jboss.ejb3.BeanContext;
26 import org.jboss.ejb3.Container;
27 import org.jboss.ejb3.tx.TxUtil;
28 import org.jboss.ejb3.tx.UserTransactionImpl;
29
30 import javax.ejb.TransactionManagementType JavaDoc;
31 import javax.transaction.UserTransaction JavaDoc;
32 import java.lang.reflect.InvocationTargetException JavaDoc;
33 import java.lang.reflect.Method JavaDoc;
34
35 /**
36  * Comment
37  *
38  * @author <a HREF="mailto:bill@jboss.org">Bill Burke</a>
39  * @version $Revision: 46510 $
40  */
41 public class UserTransactionMethodInjector implements Injector
42 {
43    private Method JavaDoc setMethod;
44
45    public UserTransactionMethodInjector(Method JavaDoc setMethod, InjectionContainer container)
46    {
47       if (container instanceof Container)
48       {
49          TransactionManagementType JavaDoc type = TxUtil.getTransactionManagementType(((Advisor) container));
50          if (type != TransactionManagementType.BEAN)
51             throw new IllegalStateException JavaDoc("Container " + ((Container) container).getEjbName() + ": it is illegal to inject UserTransaction into a CMT bean");
52       }
53       this.setMethod = setMethod;
54       setMethod.setAccessible(true);
55    }
56
57    public void inject(BeanContext ctx)
58    {
59       Object JavaDoc instance = ctx.getInstance();
60       inject(instance);
61    }
62
63    public void inject(Object JavaDoc instance)
64    {
65       UserTransaction JavaDoc ut = new UserTransactionImpl();
66       Object JavaDoc[] args = {ut};
67       try
68       {
69          setMethod.invoke(instance, args);
70       }
71       catch (IllegalAccessException JavaDoc e)
72       {
73          throw new RuntimeException JavaDoc(e); //To change body of catch statement use Options | File Templates.
74 }
75       catch (IllegalArgumentException JavaDoc e)
76       {
77          throw new RuntimeException JavaDoc("Failed in setting EntityManager on setter method: " + setMethod.toString());
78       }
79       catch (InvocationTargetException JavaDoc e)
80       {
81          throw new RuntimeException JavaDoc(e.getCause()); //To change body of catch statement use Options | File Templates.
82 }
83    }
84
85    public Class JavaDoc getInjectionClass()
86    {
87       return setMethod.getParameterTypes()[0];
88    }
89 }
90
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