/*
* JBoss, Home of Professional Open Source
* Copyright 2006, JBoss Inc., and individual contributors as indicated
* 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.kernel.plugins.annotations;
import java.lang.annotation.Annotation;
import java.lang.annotation.ElementType;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import javax.inject.Inject;
import org.jboss.beans.metadata.api.annotations.Constructor;
import org.jboss.beans.metadata.plugins.AbstractBeanMetaData;
import org.jboss.beans.metadata.plugins.AbstractConstructorMetaData;
import org.jboss.beans.metadata.plugins.AbstractInjectionValueMetaData;
import org.jboss.beans.metadata.plugins.AbstractParameterMetaData;
import org.jboss.beans.metadata.spi.BeanMetaData;
import org.jboss.beans.metadata.spi.MetaDataVisitorNode;
import org.jboss.beans.metadata.spi.ParameterMetaData;
import org.jboss.kernel.spi.dependency.KernelControllerContext;
import org.jboss.metadata.spi.MetaData;
import org.jboss.reflect.spi.ConstructorInfo;
import org.jboss.reflect.spi.ParameterInfo;
/**
* Constructor annotation plugin.
*
* @author <a href="mailto:kabir.khan@jboss.com">Kabir Khan</a>
*/
public class Jsr330InjectConstructorAnnotationPlugin extends AbstractConstructorParameterAnnotationPlugin<Inject, AbstractConstructorMetaData>
{
public Jsr330InjectConstructorAnnotationPlugin(Map<Class<? extends Annotation>, Annotation2ValueMetaDataAdapter<? extends Annotation>> adapters)
{
super(Inject.class, adapters);
}
protected boolean checkAnnotatedInfo(ElementType type)
{
return ElementType.CONSTRUCTOR == type;
}
protected boolean isMetaDataAlreadyPresent(ConstructorInfo info, Constructor annotation, BeanMetaData beanMetaData)
{
return beanMetaData.getConstructor() != null;
}
protected ParameterInfo[] getParameters(ConstructorInfo info)
{
return info.getParameters();
}
protected List<MetaDataVisitorNode> handleParameterlessInfo(ConstructorInfo info, Inject annotation, BeanMetaData beanMetaData)
{
// do nothing, default will be used
return null;
}
@Override
protected List<? extends MetaDataVisitorNode> internalApplyAnnotation(ConstructorInfo info, MetaData retrieval, Inject annotation, KernelControllerContext context) throws Throwable
{
if (!Jsr330InjectFilter.INSTANCE.handleInject(retrieval))
return null;
//Add the standard MC @Inject annotation to each parameter so that the AbstractInjectionValueMetaData gets created
ParameterInfo[] params = info.getParameters();
if (params.length == 0)
return null;
if (context.getBeanMetaData() instanceof AbstractBeanMetaData == false)
throw new IllegalStateException("Bean meta data is not AbstractBeanMetaData");
AbstractBeanMetaData beanMetaData = (AbstractBeanMetaData)context.getBeanMetaData();
AbstractConstructorMetaData cmd = null;
if (beanMetaData.getConstructor() == null)
{
cmd = new AbstractConstructorMetaData();
beanMetaData.setConstructor(cmd);
}
else
{
if (beanMetaData.getConstructor() instanceof AbstractConstructorMetaData == false)
throw new IllegalStateException("Constructor is not AbstractConstructorMetaData");
else
cmd = (AbstractConstructorMetaData)beanMetaData.getConstructor();
}
List<ParameterMetaData> parameters = cmd.getParameters();
if (parameters == null)
{
parameters = new ArrayList<ParameterMetaData>();
cmd.setParameters(parameters);
}
for (int i = 0 ; i < params.length ; i++)
{
AbstractInjectionValueMetaData inject = new AbstractInjectionValueMetaData();
AbstractParameterMetaData param = new AbstractParameterMetaData(params[i].getParameterType().getName(), inject);
parameters.add(param);
}
return Collections.singletonList(cmd);
}
protected void setParameterizedMetaData(AbstractConstructorMetaData parameterizedMetaData, BeanMetaData beanMetaData)
{
//Just override to satisfy the interface requirements
}
}