/**
* Copyright (C) 2010 eXo Platform SAS.
*
* 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.exoplatform.services.rest.impl;
import org.exoplatform.container.ExoContainer;
import org.exoplatform.container.ExoContainerContext;
import org.exoplatform.services.log.ExoLogger;
import org.exoplatform.services.log.Log;
import org.exoplatform.services.rest.Filter;
import org.exoplatform.services.rest.PerRequestObjectFactory;
import org.exoplatform.services.rest.RequestFilter;
import org.exoplatform.services.rest.ResponseFilter;
import org.exoplatform.services.rest.SingletonObjectFactory;
import org.exoplatform.services.rest.impl.resource.ApplicationResource;
import org.exoplatform.services.rest.impl.resource.ResourceDescriptorValidator;
import org.exoplatform.services.rest.method.MethodInvokerFilter;
import org.exoplatform.services.rest.resource.AbstractResourceDescriptor;
import org.picocontainer.Startable;
import java.util.List;
import java.util.Set;
import javax.ws.rs.Path;
import javax.ws.rs.core.Application;
import javax.ws.rs.ext.ContextResolver;
import javax.ws.rs.ext.ExceptionMapper;
import javax.ws.rs.ext.MessageBodyReader;
import javax.ws.rs.ext.MessageBodyWriter;
import javax.ws.rs.ext.Provider;
/**
* Purpose of this class is to get all subclasses of
* {@link javax.ws.rs.core.Application} from eXo container and to process set of
* object of classes provided by it as JAX-RS components.
*
* @author <a href="mailto:andrew00x@gmail.com">Andrey Parfonov</a>
* @version $Id: ApplicationRegistry.java 3974 2011-02-15 09:03:38Z aparfonov $
*/
public class ApplicationRegistry implements Startable
{
/** Logger. */
private static final Log LOG = ExoLogger.getLogger(ApplicationRegistry.class);
protected final ExoContainer container;
protected final ResourceBinder resources;
protected final ProvidersRegistry providers;
protected final ResourceDescriptorValidator rdv = ResourceDescriptorValidator.getInstance();
public ApplicationRegistry(ExoContainerContext containerContext, ResourceBinder resources,
ProvidersRegistry providers, StartableApplication eXo /* Be sure eXo components are initialized. */)
{
this.resources = resources;
this.providers = providers;
this.container = containerContext.getContainer();
}
/**
* {@inheritDoc}
*/
@SuppressWarnings("unchecked")
public void start()
{
List<Application> all = container.getComponentInstancesOfType(Application.class);
for (Application app : all)
{
addApplication(app);
}
}
@SuppressWarnings({"unchecked", "rawtypes"})
public void addApplication(Application app)
{
String applicationId = app.getClass().getName();
ApplicationProviders appProviders = new ApplicationProviders(applicationId);
Set<Object> singletons = app.getSingletons();
if (singletons != null && singletons.size() > 0)
{
for (Object obj : singletons)
{
Class clazz = obj.getClass();
if (clazz.getAnnotation(Provider.class) != null)
{
if (obj instanceof ContextResolver)
appProviders.addContextResolver((ContextResolver)obj);
if (obj instanceof ExceptionMapper)
appProviders.addExceptionMapper((ExceptionMapper)obj);
if (obj instanceof MessageBodyReader)
appProviders.addMessageBodyReader((MessageBodyReader)obj);
if (obj instanceof MessageBodyWriter)
appProviders.addMessageBodyWriter((MessageBodyWriter)obj);
}
else if (clazz.getAnnotation(Filter.class) != null)
{
if (obj instanceof MethodInvokerFilter)
appProviders.addMethodInvokerFilter((MethodInvokerFilter)obj);
if (obj instanceof RequestFilter)
appProviders.addRequestFilter((RequestFilter)obj);
if (obj instanceof ResponseFilter)
appProviders.addResponseFilter((ResponseFilter)obj);
}
else if (clazz.getAnnotation(Path.class) != null)
{
AbstractResourceDescriptor descriptor = new ApplicationResource(applicationId, obj);
descriptor.accept(rdv);
resources.addResource(new SingletonObjectFactory<AbstractResourceDescriptor>(descriptor, obj));
}
else
{
LOG.warn("Unknown class type: " + clazz.getName() + " found in " + applicationId);
}
}
}
Set<Class<?>> classes = app.getClasses();
if (classes != null && classes.size() > 0)
{
for (Class clazz : classes)
{
if (clazz.getAnnotation(Provider.class) != null)
{
if (ContextResolver.class.isAssignableFrom(clazz))
appProviders.addContextResolver(clazz);
if (ExceptionMapper.class.isAssignableFrom(clazz))
appProviders.addExceptionMapper(clazz);
if (MessageBodyReader.class.isAssignableFrom(clazz))
appProviders.addMessageBodyReader(clazz);
if (MessageBodyWriter.class.isAssignableFrom(clazz))
appProviders.addMessageBodyWriter(clazz);
}
else if (clazz.getAnnotation(Filter.class) != null)
{
if (MethodInvokerFilter.class.isAssignableFrom(clazz))
appProviders.addMethodInvokerFilter(clazz);
if (RequestFilter.class.isAssignableFrom(clazz))
appProviders.addRequestFilter(clazz);
if (ResponseFilter.class.isAssignableFrom(clazz))
appProviders.addResponseFilter(clazz);
}
else if (clazz.getAnnotation(Path.class) != null)
{
AbstractResourceDescriptor descriptor = new ApplicationResource(applicationId, clazz);
descriptor.accept(rdv);
resources.addResource(new PerRequestObjectFactory<AbstractResourceDescriptor>(descriptor));
}
else
{
LOG.warn("Unknown class type: " + clazz.getName() + " found in: " + applicationId);
}
}
}
this.providers.addProviders(appProviders);
}
/**
* {@inheritDoc}
*/
public void stop()
{
}
}