package org.codehaus.plexus.component.composition;
/*
* The MIT License
*
* Copyright (c) 2004, The Codehaus
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is furnished to do
* so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
import org.codehaus.plexus.component.repository.ComponentDescriptor;
import org.codehaus.plexus.component.repository.ComponentRequirement;
import org.codehaus.plexus.util.dag.CycleDetectedException;
import org.codehaus.plexus.util.dag.DAG;
import java.util.Iterator;
import java.util.List;
/**
* @author <a href="mailto:michal.maczka@dimatics.com">Michal Maczka</a>
* @version $Id: DefaultCompositionResolver.java 1700 2005-04-14 06:13:58Z brett $
*/
public class DefaultCompositionResolver
implements CompositionResolver
{
private DAG dag = new DAG();
public void addComponentDescriptor( final ComponentDescriptor componentDescriptor )
throws CompositionException
{
final String componentKey = componentDescriptor.getComponentKey();
final List requirements = componentDescriptor.getRequirements();
for ( final Iterator iterator = requirements.iterator(); iterator.hasNext(); )
{
final ComponentRequirement requirement = (ComponentRequirement) iterator.next();
try
{
dag.addEdge( componentKey, requirement.getRole() );
}
catch ( CycleDetectedException e )
{
throw new CompositionException( "Cyclic requirement detected", e );
}
}
}
/**
* @see org.codehaus.plexus.component.composition.CompositionResolver#getRequirements(java.lang.String)
*/
public List getRequirements( final String componentKey )
{
return dag.getChildLabels( componentKey );
}
/**
* @see org.codehaus.plexus.component.composition.CompositionResolver#findRequirements(java.lang.String)
*/
public List findRequirements( final String componentKey )
{
return dag.getParentLabels( componentKey );
}
}