/*
* JBoss, Home of Professional Open Source.
* Copyright 2008, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags. See the copyright.txt file 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.weld.integration.deployer.env;
import org.jboss.dependency.plugins.AbstractDependencyItem;
import org.jboss.dependency.spi.Controller;
import org.jboss.dependency.spi.ControllerContext;
import org.jboss.dependency.spi.ControllerState;
import org.jboss.dependency.spi.DependencyInfo;
import org.jboss.dependency.spi.DependencyItem;
/**
* Bean which knows how to create dynamic dependencies to target bean.
*
* @author <a href="mailto:ales.justin@jboss.org">Ales Justin</a>
*/
public class DynamicDependencyCreator
{
/** The controller */
private Controller controller;
public DynamicDependencyCreator(Controller controller)
{
this.controller = controller;
}
/**
* Create dependencies to target bean.
*
* @param targetName the target bean name
* @param dependencies dependencies names
* @param whenRequiredState when required state
* @param dependentState dependencies dependent state
*/
public void createDepenencies(Object targetName, Iterable<String> dependencies, String whenRequiredState, String dependentState)
{
if (targetName == null)
throw new IllegalArgumentException("Null target name");
if (dependencies == null)
throw new IllegalArgumentException("Null dependecies");
ControllerContext targetControllerContext = controller.getContext(targetName, null);
if (targetControllerContext == null)
throw new IllegalArgumentException("No such target bean installed: " + targetName);
Throwable error = targetControllerContext.getError();
if (error != null)
throw new IllegalArgumentException("Target bean " + targetName + " is in Error state: " + error);
ControllerState whenRequired;
if (whenRequiredState == null)
whenRequired = ControllerState.INSTALLED;
else
whenRequired = ControllerState.getInstance(whenRequiredState);
ControllerState currentTargetState = targetControllerContext.getState();
if (controller.getStates().isBeforeState(currentTargetState, whenRequired) == false)
throw new IllegalArgumentException("Target bean " + targetName + " is already past " + whenRequiredState + " state: " + targetControllerContext);
ControllerState dependent = null;
if (dependentState != null)
dependent = ControllerState.getInstance(dependentState);
DependencyInfo di = targetControllerContext.getDependencyInfo();
for (Object dependency : dependencies)
{
DependencyItem item = new AbstractDependencyItem(targetName, dependency, whenRequired, dependent);
di.addIDependOn(item);
}
}
}