/*
* Copyright 2012 Red Hat, Inc. and/or its affiliates.
*
* Licensed under the Eclipse Public License version 1.0, available at
* http://www.eclipse.org/legal/epl-v10.html
*/
package org.jboss.forge.project.services;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Set;
import javax.enterprise.context.Dependent;
import javax.enterprise.inject.spi.BeanManager;
import javax.inject.Inject;
import org.jboss.forge.bus.util.Annotations;
import org.jboss.forge.project.Facet;
import org.jboss.forge.project.facets.FacetNotFoundException;
import org.jboss.forge.shell.plugins.Alias;
import org.jboss.forge.shell.plugins.AliasLiteral;
import org.jboss.forge.shell.project.FacetRegistry;
import org.jboss.forge.shell.util.BeanManagerUtils;
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 FacetRegistry registry;
private BeanManager bm;
@Inject
public FacetFactory(FacetRegistry registry, BeanManager bm)
{
this.registry = registry;
this.bm = bm;
}
public Set<Class<? extends Facet>> getFacetTypes()
{
return registry.getFacetTypes();
}
/**
* @deprecated Use #getFacetTypes() instead. This will be removed in a future release.
*/
@Deprecated
public List<Facet> getFacets()
{
if (facets == null)
{
Iterator<Class<? extends Facet>> iterator = getFacetTypes().iterator();
List<Facet> result = new ArrayList<Facet>();
while (iterator.hasNext())
{
result.add(getFacet(iterator.next()));
}
facets = result;
}
return facets;
}
@SuppressWarnings("unchecked")
public <T extends Facet> T getFacet(final Class<T> type) throws FacetNotFoundException
{
T result = null;
for (Class<? extends Facet> facetType : getFacetTypes())
{
if (type.isAssignableFrom(facetType))
{
if (Annotations.isAnnotationPresent(facetType, Alias.class))
result = (T) BeanManagerUtils.getContextualInstance(bm, facetType,
new AliasLiteral(ConstraintInspector.getName(facetType)));
else
result = (T) BeanManagerUtils.getContextualInstance(bm, facetType);
}
if (type.equals(facetType))
{
/**
* Ensure that if there is an exact match, we prefer it over other facet types.
*/
if (Annotations.isAnnotationPresent(facetType, Alias.class))
result = (T) BeanManagerUtils.getContextualInstance(bm, facetType,
new AliasLiteral(ConstraintInspector.getName(facetType)));
else
result = (T) BeanManagerUtils.getContextualInstance(bm, facetType);
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 (Class<? extends Facet> facet : getFacetTypes())
{
String name = ConstraintInspector.getName(facet);
if (name.equals(facetName))
{
result = getFacet(facet);
break;
}
}
if (result == null)
{
throw new FacetNotFoundException("The requested Facet named [" + facetName + "] could not be found.");
}
return result;
}
}