[jboss-cvs] jboss-seam/src/ioc/org/jboss/seam/ioc ...
Norman Richards
norman.richards at jboss.com
Fri Feb 16 22:26:42 EST 2007
User: nrichards
Date: 07/02/16 22:26:42
Added: src/ioc/org/jboss/seam/ioc IoCComponent.java
ProxyUtils.java
Log:
create main module
Revision Changes Path
1.1 date: 2007/02/17 03:26:42; author: nrichards; state: Exp;jboss-seam/src/ioc/org/jboss/seam/ioc/IoCComponent.java
Index: IoCComponent.java
===================================================================
/*
* JBoss, Home of Professional Open Source
* Copyright 2006, JBoss Inc., and individual contributors as indicated
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This 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 (at your option) any later version.
*
* This software 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 software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.seam.ioc;
import java.util.Arrays;
import java.util.HashSet;
import java.util.Set;
import javax.servlet.http.HttpSessionActivationListener;
import org.jboss.seam.Component;
import org.jboss.seam.InterceptionType;
import org.jboss.seam.ScopeType;
import org.jboss.seam.core.Mutable;
import org.jboss.seam.intercept.Proxy;
import org.jboss.seam.log.LogProvider;
import org.jboss.seam.log.Logging;
/**
* An extension of Component that allows external IoC
* to provide the base instance for a seam component.
*
* @author <a href="mailto:ales.justin at jboss.com">Ales Justin</a>
*/
public abstract class IoCComponent extends Component
{
protected final LogProvider log = Logging.getLogProvider(getClass());
/**
* Creates a Spring Seam Component given a beanFactory.
*
* @param clazz class
* @param name component name
* @param scope component scope
*/
public IoCComponent(Class clazz, String name, ScopeType scope)
{
super(clazz, name, scope, null);
}
protected abstract String getIoCName();
protected abstract Object instantiateIoCBean() throws Exception;
/**
* Instantiates a IoC bean and provides it as a java bean to be wrapped
* by seam.
*
* @see org.jboss.seam.Component#instantiateJavaBean()
*/
/* protected Object instantiateJavaBean() throws Exception
{
Object bean = instantiateIoCBean();
// initialize the bean following Component.instantiateJavaBean()'s
// pattern.
if (getInterceptionType() == InterceptionType.NEVER)
{
initialize(bean);
callPostConstructMethod(bean);
}
else
{
// Add all of the interfaces of the bean instance into the Seam
// proxy bean because spring's proxies add a bunch of interfaces too
// that should be accessible.
Set<Class> interfaces = new HashSet<Class>(Arrays.asList(bean.getClass().getInterfaces()));
interfaces.add(HttpSessionActivationListener.class);
interfaces.add(Mutable.class);
interfaces.add(Proxy.class);
// enhance bean
bean = ProxyUtils.enhance(bean, interfaces, this);
}
return bean;
}*/
}
1.1 date: 2007/02/17 03:26:42; author: nrichards; state: Exp;jboss-seam/src/ioc/org/jboss/seam/ioc/ProxyUtils.java
Index: ProxyUtils.java
===================================================================
/*
* JBoss, Home of Professional Open Source
* Copyright 2006, JBoss Inc., and individual contributors as indicated
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This 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 (at your option) any later version.
*
* This software 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 software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.seam.ioc;
import java.lang.reflect.Proxy;
import java.util.Set;
import net.sf.cglib.proxy.Enhancer;
import org.jboss.seam.intercept.JavaBeanInterceptor;
import org.jboss.seam.log.LogProvider;
import org.jboss.seam.log.Logging;
/**
* @author <a href="mailto:ales.justin at jboss.com">Ales Justin</a>
*/
public class ProxyUtils
{
private static final LogProvider log = Logging.getLogProvider(ProxyUtils.class);
public static boolean isProxy(Class clazz)
{
return Proxy.isProxyClass(clazz);
}
public static Object enhance(Object bean, Set<Class> interfaces, IoCComponent component) throws Exception
{
Class beanClass = bean.getClass();
if (isProxy(beanClass))
{
throw new RuntimeException("Seam cannot wrap JDK proxied IoC beans. Please use CGLib or Javassist proxying instead");
}
//
if (isCglibProxyClass(beanClass) || isJavassistProxyClass(beanClass))
{
beanClass = beanClass.getSuperclass();
}
if (log.isDebugEnabled())
{
log.debug("Creating proxy for " + component.getIoCName() + " Seam component '"
+ component.getName() + "' using class: " + beanClass.getName());
}
// create pojo proxy
JavaBeanInterceptor interceptor = new JavaBeanInterceptor(bean, component);
// Should probably create a Factory but required a lot of duplicated
// code and there is potential for a spring bean to provide
// different interfaces at different times in an application. If
// need is great I can create a Factory and assume the same
// interfaces all the time.
bean = Enhancer.create(beanClass, interfaces.toArray(new Class[interfaces.size()]), interceptor);
interceptor.postConstruct();
return bean;
}
public static boolean isCglibProxyClass(Class clazz)
{
return clazz != null && clazz.getName().contains("$$");
}
public static boolean isJavassistProxyClass(Class clazz)
{
return false; // todo
}
}
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