/*
* 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.dependency.plugins.graph;
import org.jboss.dependency.plugins.AbstractDependencyItem;
import org.jboss.dependency.spi.Controller;
import org.jboss.dependency.spi.ControllerContext;
import org.jboss.dependency.spi.ControllerMode;
import org.jboss.dependency.spi.ControllerState;
import org.jboss.dependency.spi.graph.GraphController;
import org.jboss.dependency.spi.graph.LookupStrategy;
import org.jboss.dependency.spi.graph.SearchInfo;
/**
* Search dependency item.
*
* @author <a href="mailto:ales.justin@jboss.org">Ales Justin</a>
*/
public class SearchDependencyItem extends AbstractDependencyItem
{
private SearchInfo search;
public SearchDependencyItem(Object name, Object iDependOn, ControllerState whenRequired, ControllerState dependentState, SearchInfo search)
{
super(name, iDependOn, whenRequired, dependentState);
this.search = search;
}
/**
* Get controller context.
*
* @param controller the controller
* @param name the name
* @param state the state
* @return the controller context
*/
protected ControllerContext getControllerContext(Controller controller, Object name, ControllerState state)
{
LookupStrategy strategy = search.getStrategy();
return strategy.getContext(controller, name, state);
}
public boolean resolve(Controller controller)
{
if (controller instanceof GraphController)
{
boolean previous = isResolved();
ControllerContext context;
if (getDependentState() == null)
{
context = getControllerContext(controller, getIDependOn(), ControllerState.INSTALLED);
}
else
{
context = getControllerContext(controller, getIDependOn(), getDependentState());
}
if (context == null)
{
setResolved(false);
ControllerContext unresolvedContext = getControllerContext(controller, getIDependOn(), null);
if (unresolvedContext != null && ControllerMode.ON_DEMAND.equals(unresolvedContext.getMode()))
{
try
{
controller.enableOnDemand(unresolvedContext);
}
catch (Throwable ignored)
{
if (log.isTraceEnabled())
log.trace("Unexpected error", ignored);
}
}
}
else
{
addDependsOnMe(controller, context);
setResolved(true);
}
if (previous != isResolved())
{
flushJBossObjectCache();
if (log.isTraceEnabled())
{
if (isResolved())
log.trace("Resolved " + this);
else
log.trace("Unresolved " + this);
}
}
return isResolved();
}
return super.resolve(controller);
}
protected void toHumanReadableString(StringBuilder builder)
{
super.toHumanReadableString(builder);
builder.append("search=").append(search);
}
}