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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.tuscany.sca.contribution.osgi.impl;
import org.apache.tuscany.sca.contribution.Contribution;
import org.apache.tuscany.sca.contribution.processor.ProcessorContext;
import org.apache.tuscany.sca.contribution.resolver.ClassReference;
import org.apache.tuscany.sca.contribution.resolver.ModelResolver;
import org.apache.tuscany.sca.core.FactoryExtensionPoint;
import org.osgi.framework.Bundle;
/**
* A Model Resolver for ClassReferences.
*
* @version $Rev$ $Date$
*/
public class OSGiClassReferenceModelResolver implements ModelResolver {
// private Contribution contribution;
private Bundle bundle;
public OSGiClassReferenceModelResolver(Contribution contribution, FactoryExtensionPoint modelFactories) {
// this.contribution = contribution;
this.bundle = OSGiBundleActivator.findBundle(contribution.getLocation());
}
public void addModel(Object resolved, ProcessorContext context) {
}
public Object removeModel(Object resolved, ProcessorContext context) {
return resolved;
}
public <T> T resolveModel(Class<T> modelClass, T unresolved, ProcessorContext context) {
//Load a class on demand
Class<?> clazz = null;
if (bundle != null) {
try {
clazz = bundle.loadClass(((ClassReference)unresolved).getClassName());
} catch (Exception e) {
// Ignore
}
}
if (clazz != null) {
//if we load the class
// Store a new ClassReference wrapping the loaded class
ClassReference classReference = new ClassReference(clazz);
// Return the resolved ClassReference
return modelClass.cast(classReference);
} else {
return unresolved;
}
}
}
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