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Java > Open Source Codes > org > jboss > test > aop > basic > SimpleInterceptor


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.test.aop.basic;
23
24 import org.jboss.aop.joinpoint.FieldReadInvocation;
25 import org.jboss.aop.joinpoint.FieldWriteInvocation;
26 import org.jboss.aop.joinpoint.MethodInvocation;
27
28 import java.lang.reflect.Field JavaDoc;
29 import java.lang.reflect.Method JavaDoc;
30
31 /**
32  * @author <a HREF="mailto:bill@jboss.org">Bill Burke</a>
33  * @version $Revision: 37406 $
34  */
35 public class SimpleInterceptor implements org.jboss.aop.advice.Interceptor
36 {
37
38    public String JavaDoc getName()
39    {
40       return "SimpleInterceptor";
41    }
42
43    public Object JavaDoc invoke(org.jboss.aop.joinpoint.Invocation invocation) throws Throwable JavaDoc
44    {
45       System.out.println("interception: " + invocation.getClass().getName());
46       if (invocation instanceof MethodInvocation)
47       {
48          org.jboss.aop.joinpoint.MethodInvocation methodInvocation = (org.jboss.aop.joinpoint.MethodInvocation) invocation;
49          Method JavaDoc m = methodInvocation.getMethod();
50          if (m.getName().equals("whazup")) return "nada";
51          lastIntercepted = m.getName();
52          String JavaDoc transattr = (String JavaDoc) invocation.getMetaData("transaction", "trans-attribute");
53          System.out.println("trans-attribute: " + transattr);
54          lastTransAttributeAccessed = transattr;
55       }
56       else if (invocation instanceof FieldReadInvocation || invocation instanceof FieldWriteInvocation)
57       {
58          org.jboss.aop.joinpoint.FieldInvocation fieldInvocation = (org.jboss.aop.joinpoint.FieldInvocation) invocation;
59          Field JavaDoc field = fieldInvocation.getField();
60          System.out.println("**** simple: " + field.getName());
61          lastFieldIntercepted = field.getName();
62          Object JavaDoc obj = invocation.getMetaData("transaction", "trans-attribute");
63          if (obj != null)
64          {
65             System.out.println(field.getName() + "type**" + obj.getClass().getName());
66          }
67          String JavaDoc transattr = (String JavaDoc) invocation.getMetaData("transaction", "trans-attribute");
68          System.out.println("trans-attribute: " + transattr);
69          lastFieldTransAttributeAccessed = transattr;
70       }
71       return invocation.invokeNext();
72    }
73
74    public static String JavaDoc lastIntercepted;
75    public static String JavaDoc lastTransAttributeAccessed;
76    public static String JavaDoc lastFieldIntercepted;
77    public static String JavaDoc lastFieldTransAttributeAccessed;
78 }
79
80
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