/**
* EasyBeans
* Copyright (C) 2006 Bull S.A.S.
* Contact: easybeans@ow2.org
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*
* --------------------------------------------------------------------------
* $Id: ClientLifeCycleAdapter.java 5369 2010-02-24 14:58:19Z benoitf $
* --------------------------------------------------------------------------
*/
package org.ow2.easybeans.enhancer.client;
import org.ow2.easybeans.asm.ClassAdapter;
import org.ow2.easybeans.asm.ClassVisitor;
import org.ow2.easybeans.asm.MethodVisitor;
import org.ow2.easybeans.asm.Opcodes;
import org.ow2.easybeans.deployment.metadata.ejbjar.EasyBeansEjbJarClassMetadata;
import org.ow2.easybeans.deployment.metadata.ejbjar.EasyBeansEjbJarMethodMetadata;
/**
* This class manages the lifecycle of the client. It injects a method managing
* the postConstruct annotation.
* @author Florent Benoit
*/
public class ClientLifeCycleAdapter extends ClassAdapter implements Opcodes {
/**
* Metadata available by this adapter for a class.
*/
private EasyBeansEjbJarClassMetadata classAnnotationMetadata;
/**
* Defines java.lang.Object class.
*/
public static final String JAVA_LANG_OBJECT = "java/lang/Object";
/**
* Constructor.
* @param classAnnotationMetadata object containing all attributes of the
* class
* @param cv the class visitor to which this adapter must delegate calls.
*/
public ClientLifeCycleAdapter(final EasyBeansEjbJarClassMetadata classAnnotationMetadata, final ClassVisitor cv) {
super(cv);
this.classAnnotationMetadata = classAnnotationMetadata;
}
/**
* Visits the end of the class. This method, which is the last one to be
* called, is used to inform the visitor that all the fields and methods of
* the class have been visited.
*/
@Override
public void visitEnd() {
super.visitEnd();
// Inject call to all postConstructs annotations
MethodVisitor mv = this.cv
.visitMethod(ACC_PUBLIC + ACC_STATIC, "easyBeansLifeCyclePostConstruct", "()V", null, null);
mv.visitCode();
// call super method (if any)
String superNameClass = this.classAnnotationMetadata.getSuperName();
if (superNameClass != null && !superNameClass.equals(JAVA_LANG_OBJECT)) {
EasyBeansEjbJarClassMetadata superMetadata = this.classAnnotationMetadata.getLinkedClassMetadata(superNameClass);
if (superMetadata != null) {
mv.visitMethodInsn(INVOKESTATIC, superMetadata.getClassName(), "easyBeansLifeCyclePostConstruct", "()V");
}
}
// call each method annotated
for (EasyBeansEjbJarMethodMetadata method : this.classAnnotationMetadata.getPostConstructMethodsMetadata()) {
String clName = method.getClassMetadata().getClassName();
mv.visitMethodInsn(INVOKESTATIC, clName, method.getMethodName(), method.getJMethod().getDescriptor());
}
mv.visitInsn(RETURN);
mv.visitMaxs(0, 0);
mv.visitEnd();
}
}