/*
* JBoss, by Red Hat.
* Copyright 2010, Red Hat, Inc., and individual contributors
* 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.forge.project.services;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import javax.enterprise.context.Dependent;
import javax.enterprise.inject.Any;
import javax.enterprise.inject.Instance;
import javax.inject.Inject;
import org.jboss.forge.project.Facet;
import org.jboss.forge.project.facets.FacetNotFoundException;
import org.jboss.forge.shell.util.ConstraintInspector;
/**
* Responsible for instantiating {@link Facet}s through CDI.
*
* @author <a href="mailto:lincolnbaxter@gmail.com">Lincoln Baxter, III</a>
*/
@Dependent
public class FacetFactory
{
private List<Facet> facets;
private final Instance<? extends Facet> instances;
@Inject
public FacetFactory(@Any final Instance<Facet> instances)
{
this.instances = instances;
}
public List<Facet> getFacets()
{
if (facets == null)
{
Iterator<? extends Facet> iterator = instances.iterator();
List<Facet> result = new ArrayList<Facet>();
while (iterator.hasNext())
{
Facet element = iterator.next();
result.add(element);
}
facets = result;
}
return facets;
}
@SuppressWarnings("unchecked")
public <T extends Facet> T getFacet(final Class<T> type) throws FacetNotFoundException
{
T result = null;
for (Facet facet : getFacets())
{
if (type.isAssignableFrom(facet.getClass()))
{
result = (T) facet;
}
if (type.equals(facet.getClass()))
{
/**
* Ensure that if there is an exact match, we prefer it over other facet types.
*/
result = (T) facet;
break;
}
}
if (result == null)
{
throw new FacetNotFoundException("The requested Facet of type [" + type.getName() + "] could not be loaded.");
}
return result;
}
public Facet getFacetByName(final String facetName) throws FacetNotFoundException
{
Facet result = null;
for (Facet facet : getFacets())
{
String name = ConstraintInspector.getName(facet.getClass());
if (name.equals(facetName))
{
result = facet;
break;
}
}
if (result == null)
{
throw new FacetNotFoundException("The requested Facet named [" + facetName + "] could not be found.");
}
return result;
}
}