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Java > Open Source Codes > org > jboss > aop > instrument > NonOptimizedConstructorExecutionTransformer


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.aop.instrument;
23
24 import javassist.CannotCompileException;
25 import javassist.CtClass;
26 import javassist.CtConstructor;
27 import javassist.CtMethod;
28 import javassist.Modifier;
29 import javassist.NotFoundException;
30
31 import org.jboss.aop.AspectManager;
32
33 /**
34  * Comment
35  *
36  * @author <a HREF="mailto:kabir.khan@jboss.org">Kabir Khan</a>
37  * @version $Revision$
38  */
39 public class NonOptimizedConstructorExecutionTransformer extends ConstructorExecutionTransformer
40 {
41
42    public NonOptimizedConstructorExecutionTransformer(Instrumentor instrumentor)
43    {
44       super(instrumentor);
45    }
46    
47    protected void createWrapper(ConstructorTransformation trans) throws CannotCompileException, NotFoundException
48    {
49       String JavaDoc code = null;
50       String JavaDoc args = "(Object[])null";
51       if (trans.getConstructor().getParameterTypes().length > 0)
52       {
53          args = "$args";
54       }
55       
56       String JavaDoc infoName = getConstructorInfoFieldName(trans.getSimpleName(), trans.getIndex());
57       
58       code =
59          "{ " +
60          " " + constructorInfoFromWeakReference("info", infoName) +
61          " org.jboss.aop.advice.Interceptor[] interceptors = info.getInterceptors(); " +
62          " if (interceptors != (org.jboss.aop.advice.Interceptor[])null) " +
63          " { " +
64          " return ($r)" + Instrumentor.HELPER_FIELD_NAME + ".invokeNew(" + args + ", (int)" + (trans.getIndex()) + "); " +
65          " } " +
66          " return new " + trans.getClazz().getName() + "($$); " +
67          "}";
68       // fill wrapped code only after the constructor invocations have been converted
69 // by wrapper calls
70 codifier.addPendingCode(trans.getWrapperMethod(), code);
71    }
72
73    
74
75 }
76
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