KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > org > jboss > test > aop > jdk15 > dynamic > common > BindingInterceptor


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.jdk15.dynamic.common;
23
24 import org.jboss.aop.advice.Interceptor;
25 import org.jboss.aop.joinpoint.ConstructorInvocation;
26 import org.jboss.aop.joinpoint.FieldInvocation;
27 import org.jboss.aop.joinpoint.FieldReadInvocation;
28 import org.jboss.aop.joinpoint.FieldWriteInvocation;
29 import org.jboss.aop.joinpoint.Invocation;
30 import org.jboss.aop.joinpoint.MethodInvocation;
31
32 /**
33  * Binding interceptor. Is used by dynamic test cases
34  * for interception of joinpoints. This interception
35  * is achieved through the dynamic addition of advice
36  * bindings.
37  * @author Flavia Rainone
38  */
39 public class BindingInterceptor implements Interceptor
40 {
41
42    private static InterceptionsCount interceptionsCount = new InterceptionsCount();
43
44    /**
45     * Returns the total number of times that any instance
46     * of this class intercepted a joinpoint, since the
47     * last time that resetCounts was called.
48     */
49    public static InterceptionsCount getInterceptionsCount()
50    {
51       return interceptionsCount;
52    }
53
54    /**
55     * Resets the counting of interceptions to zero.
56     */
57    public static void resetCounts()
58    {
59       interceptionsCount = new InterceptionsCount();
60    }
61    
62    /**
63     * Returns the name of this interceptor.
64     */
65    public String JavaDoc getName() { return "InstanceInterceptor"; }
66
67    /**
68     * Intercepts the joinpoint represented by <code>invocation</code>.
69     */
70    public Object JavaDoc invoke(Invocation invocation) throws Throwable JavaDoc
71    {
72       interceptionsCount.total++;
73       if (invocation instanceof ConstructorInvocation)
74       {
75          interceptionsCount.constructor++;
76       }
77       else if (invocation instanceof FieldInvocation)
78       {
79          if (invocation instanceof FieldReadInvocation)
80          {
81             interceptionsCount.fieldRead++;
82          }
83          else if (invocation instanceof FieldWriteInvocation)
84          {
85             interceptionsCount.fieldWrite++;
86          }
87          else
88          {
89             throw new RuntimeException JavaDoc("Unexpected invocation type invalidates test correction.");
90          }
91       }
92       else if (invocation instanceof MethodInvocation)
93       {
94          interceptionsCount.method++;
95       }
96       return invocation.invokeNext();
97    }
98 }
Popular Tags