/*
* JBoss, Home of Professional Open Source
* Copyright 2005, 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.kernel.plugins.registry.basic;
import org.jboss.dependency.spi.ControllerContext;
import org.jboss.dependency.spi.ControllerState;
import org.jboss.dependency.spi.dispatch.LifecycleDispatchContext;
import org.jboss.dependency.spi.dispatch.InvokeDispatchContext;
/**
* A kernel bus that understands lifecycle invocation.
*
* @author <a href="ales.justin@jboss.com">Ales Justin</a>
*/
public class LifecycleAwareKernelBus extends BasicKernelBus
{
public Object invoke(Object name, final String methodName, final Object parameters[], final String[] signature) throws Throwable
{
ControllerContext context = controller.getContext(name, null);
if (context == null)
throw new IllegalArgumentException("No such context: " + name);
if (context instanceof LifecycleDispatchContext)
{
LifecycleDispatchContext ldc = (LifecycleDispatchContext)context;
ControllerState state = ldc.lifecycleInvocation(methodName, parameters, signature);
if (state != null)
{
if (state.equals(context.getState()) == false)
controller.change(context, state);
return null;
}
}
if (ControllerState.INSTALLED.equals(context.getState()))
{
return execute(context, InvokeDispatchContext.class, new Dispatcher<InvokeDispatchContext>()
{
public Object dispatch(InvokeDispatchContext dispatchContext) throws Throwable
{
return dispatchContext.invoke(methodName, parameters, signature);
}
@Override
public String toString()
{
return "invoke";
}
});
}
else
{
throw new IllegalArgumentException("The invocation is not a lifecycle invocation or context is not fully installed: " + context);
}
}
}