/*
* 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.implementation.composite;
import static javax.xml.stream.XMLStreamConstants.END_ELEMENT;
import static javax.xml.stream.XMLStreamConstants.START_ELEMENT;
import static org.osoa.sca.Version.XML_NAMESPACE_1_0;
import java.net.URL;
import javax.xml.namespace.QName;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamReader;
import org.apache.tuscany.core.property.PropertyHelper;
import org.apache.tuscany.spi.annotation.Autowire;
import org.apache.tuscany.spi.component.CompositeComponent;
import org.apache.tuscany.spi.deployer.CompositeClassLoader;
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.ComponentDefinition;
import org.apache.tuscany.spi.model.CompositeComponentType;
import org.apache.tuscany.spi.model.Implementation;
import org.apache.tuscany.spi.model.Include;
import org.apache.tuscany.spi.model.ModelObject;
import org.apache.tuscany.spi.model.Property;
import org.apache.tuscany.spi.model.ReferenceDefinition;
import org.apache.tuscany.spi.model.ServiceDefinition;
import org.apache.tuscany.spi.services.artifact.Artifact;
import org.apache.tuscany.spi.services.artifact.ArtifactRepository;
/**
* Loads a composite component definition from an XML-based assembly file
*
* @version $Rev: 463807 $ $Date: 2006-10-13 13:02:50 -0700 (Fri, 13 Oct 2006) $
*/
public class CompositeLoader extends LoaderExtension<CompositeComponentType> {
public static final QName COMPOSITE = new QName(XML_NAMESPACE_1_0, "composite");
private final ArtifactRepository artifactRepository;
public CompositeLoader(@Autowire LoaderRegistry registry,
@Autowire ArtifactRepository artifactRepository) {
super(registry);
this.artifactRepository = artifactRepository;
}
public QName getXMLType() {
return COMPOSITE;
}
public CompositeComponentType load(CompositeComponent parent,
XMLStreamReader reader,
DeploymentContext deploymentContext)
throws XMLStreamException, LoaderException {
CompositeComponentType<ServiceDefinition, ReferenceDefinition, Property<?>> composite =
new CompositeComponentType<ServiceDefinition, ReferenceDefinition, Property<?>>();
composite.setName(reader.getAttributeValue(null, "name"));
boolean done = false;
while (!done) {
switch (reader.next()) {
case START_ELEMENT:
ModelObject o = registry.load(parent, reader, deploymentContext);
if (o instanceof ServiceDefinition) {
composite.add((ServiceDefinition) o);
} else if (o instanceof ReferenceDefinition) {
composite.add((ReferenceDefinition) o);
} else if (o instanceof Property<?>) {
composite.add((Property<?>) o);
} else if (o instanceof ComponentDefinition<?>) {
composite.add((ComponentDefinition<? extends Implementation<?>>) o);
} else if (o instanceof Include) {
composite.add((Include) o);
} else if (o instanceof Dependency) {
Artifact artifact = ((Dependency) o).getArtifact();
if (artifactRepository != null) {
// default to jar type if not specified
if (artifact.getType() == null) {
artifact.setType("jar");
}
artifactRepository.resolve(artifact);
}
if (artifact.getUrl() != null) {
ClassLoader classLoader = deploymentContext.getClassLoader();
if (classLoader instanceof CompositeClassLoader) {
CompositeClassLoader ccl = (CompositeClassLoader)classLoader;
for (URL dep : artifact.getUrls()) {
ccl.addURL(dep);
}
}
}
} else {
// HACK: [rfeng] Add as an unknown model extension
if (o != null) {
composite.getExtensions().put(o.getClass(), o);
}
}
reader.next();
break;
case END_ELEMENT:
if (COMPOSITE.equals(reader.getName())) {
done = true;
break;
}
}
}
for (ComponentDefinition<? extends Implementation<?>> c : composite.getComponents().values()) {
PropertyHelper.processProperties(composite, c, deploymentContext);
}
return composite;
}
}