/*
* Copyright (c) 2008, Rickard Öberg. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package org.qi4j.library.spring.importer;
import org.qi4j.api.service.ImportedServiceDescriptor;
import org.qi4j.api.service.ServiceImporter;
import org.qi4j.api.service.ServiceImporterException;
import org.springframework.context.ApplicationContext;
/**
* Import a service from Spring. This assumes that the service has been imported
* into the assembly using the SpringImporterAssembler, so that the ApplicationContext
* is available as service meta-info.
*/
public class SpringImporter
implements ServiceImporter
{
/**
* Import a service from Spring by looking it up in the ApplicationContext.
*
* @param serviceDescriptor The service descriptor.
* @return a service instance
* @throws ServiceImporterException
*/
@Override
public Object importService( ImportedServiceDescriptor serviceDescriptor ) throws ServiceImporterException
{
try
{
return serviceDescriptor.
metaInfo( ApplicationContext.class ).
getBean( serviceDescriptor.identity(), serviceDescriptor.type() );
}
catch( Throwable e )
{
throw new ServiceImporterException( "Could not import Spring service with id " + serviceDescriptor.identity(), e );
}
}
@Override
public boolean isAvailable( Object instance )
{
return true;
}
}