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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.xml;
import java.util.HashMap;
import java.util.Map;
import org.apache.tuscany.sca.contribution.Contribution;
import org.apache.tuscany.sca.contribution.processor.ProcessorContext;
import org.apache.tuscany.sca.contribution.resolver.ModelResolver;
import org.apache.tuscany.sca.core.FactoryExtensionPoint;
/**
* A Model Resolver for Contribution models.
*
* @version $Rev$ $Date$
*/
public class ContributionModelResolver implements ModelResolver {
private Map<String, Contribution> map = new HashMap<String, Contribution>();
public ContributionModelResolver(Contribution contribution, FactoryExtensionPoint modelFactories) {
}
public void addModel(Object resolved, ProcessorContext context) {
Contribution contribution = (Contribution)resolved;
map.put(contribution.getURI(), contribution);
}
public Object removeModel(Object resolved, ProcessorContext context) {
return map.remove(((Contribution)resolved).getURI());
}
public <T> T resolveModel(Class<T> modelClass, T unresolved, ProcessorContext context) {
// Lookup a contribution for the given URI
String uri = ((Contribution)unresolved).getURI();
if (uri != null) {
Contribution resolved = (Contribution) map.get(uri);
if (resolved != null) {
return modelClass.cast(resolved);
}
return unresolved;
} else {
// If no URI was specified, just return the first contribution
if (!map.isEmpty()) {
Contribution resolved = map.values().iterator().next();
return modelClass.cast(resolved);
} else {
return unresolved;
}
}
}
}
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