/*
* 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.core.loader;
import javax.xml.namespace.QName;
import static javax.xml.stream.XMLStreamConstants.END_ELEMENT;
import static javax.xml.stream.XMLStreamConstants.START_ELEMENT;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamReader;
import static org.osoa.sca.Version.XML_NAMESPACE_1_0;
import org.osoa.sca.annotations.Constructor;
import org.apache.tuscany.spi.annotation.Autowire;
import org.apache.tuscany.spi.component.CompositeComponent;
import org.apache.tuscany.spi.deployer.DeploymentContext;
import org.apache.tuscany.spi.extension.LoaderExtension;
import org.apache.tuscany.spi.loader.LoaderException;
import org.apache.tuscany.spi.loader.LoaderRegistry;
import org.apache.tuscany.spi.model.Binding;
import org.apache.tuscany.spi.model.BoundReferenceDefinition;
import org.apache.tuscany.spi.model.ModelObject;
import org.apache.tuscany.spi.model.Multiplicity;
import org.apache.tuscany.spi.model.ReferenceDefinition;
import org.apache.tuscany.spi.model.ServiceContract;
/**
* Loads a reference from an XML-based assembly file
*
* @version $Rev: 430937 $ $Date: 2006-08-11 18:17:56 -0700 (Fri, 11 Aug 2006) $
*/
public class ReferenceLoader extends LoaderExtension<ReferenceDefinition> {
public static final QName REFERENCE = new QName(XML_NAMESPACE_1_0, "reference");
@Constructor({"registry"})
public ReferenceLoader(@Autowire LoaderRegistry registry) {
super(registry);
}
public QName getXMLType() {
return REFERENCE;
}
public ReferenceDefinition load(CompositeComponent parent,
XMLStreamReader reader,
DeploymentContext deploymentContext
)
throws XMLStreamException, LoaderException {
assert REFERENCE.equals(reader.getName());
String name = reader.getAttributeValue(null, "name");
Multiplicity multiplicity =
StAXUtil.multiplicity(reader.getAttributeValue(null, "multiplicity"), Multiplicity.ONE_ONE);
Binding binding = null;
ServiceContract serviceContract = null;
while (true) {
switch (reader.next()) {
case START_ELEMENT:
ModelObject o = registry.load(parent, reader, deploymentContext);
if (o instanceof ServiceContract) {
serviceContract = (ServiceContract) o;
} else if (o instanceof Binding) {
binding = (Binding) o;
}
reader.next();
break;
case END_ELEMENT:
if (binding == null) {
ReferenceDefinition referenceDefinition = new ReferenceDefinition(name, serviceContract);
referenceDefinition.setMultiplicity(multiplicity);
return referenceDefinition;
} else {
BoundReferenceDefinition<Binding> referenceDefinition = new BoundReferenceDefinition<Binding>();
referenceDefinition.setName(name);
referenceDefinition.setServiceContract(serviceContract);
referenceDefinition.setMultiplicity(multiplicity);
referenceDefinition.setBinding(binding);
return referenceDefinition;
}
}
}
}
}