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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.core.loader;
import java.net.MalformedURLException;
import java.net.URI;
import java.net.URL;
import javax.xml.namespace.QName;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamReader;
import static org.osoa.sca.Constants.SCA_NS;
import org.osoa.sca.annotations.Constructor;
import org.osoa.sca.annotations.Reference;
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.loader.LoaderUtil;
import org.apache.tuscany.spi.loader.MissingIncludeException;
import org.apache.tuscany.spi.loader.MissingResourceException;
import org.apache.tuscany.spi.model.CompositeComponentType;
import org.apache.tuscany.spi.model.Include;
import org.apache.tuscany.spi.model.ModelObject;
import org.apache.tuscany.core.deployer.ChildDeploymentContext;
/**
* Loader that handles <include> elements.
*
* @version $Rev$ $Date$
*/
public class IncludeLoader extends LoaderExtension<Include> {
private static final QName INCLUDE = new QName(SCA_NS, "include");
@Constructor
public IncludeLoader(@Reference LoaderRegistry registry) {
super(registry);
}
public QName getXMLType() {
return INCLUDE;
}
public Include load(ModelObject object, XMLStreamReader reader, DeploymentContext deploymentContext)
throws XMLStreamException, LoaderException {
assert INCLUDE.equals(reader.getName());
String name = reader.getAttributeValue(null, "name");
String scdlLocation = reader.getAttributeValue(null, "scdlLocation");
String scdlResource = reader.getAttributeValue(null, "scdlResource");
LoaderUtil.skipToEndElement(reader);
ClassLoader cl = deploymentContext.getClassLoader();
URL url;
if (scdlLocation != null) {
try {
url = new URL(deploymentContext.getScdlLocation(), scdlLocation);
} catch (MalformedURLException e) {
throw new MissingResourceException(scdlLocation, name, e);
}
} else if (scdlResource != null) {
url = cl.getResource(scdlResource);
if (url == null) {
throw new MissingResourceException(scdlResource, name);
}
} else {
throw new MissingIncludeException("No SCDL location or resource specified", name);
}
// when we include, the componentId remains that of the parent
URI componentId = deploymentContext.getComponentId();
boolean autowire = deploymentContext.isAutowire();
DeploymentContext childContext = new ChildDeploymentContext(deploymentContext, cl, url, componentId, autowire);
CompositeComponentType composite;
composite = loadFromSidefile(url, childContext);
Include include = new Include();
include.setName(name);
include.setScdlLocation(url);
include.setIncluded(composite);
return include;
}
protected CompositeComponentType loadFromSidefile(URL url, DeploymentContext context) throws LoaderException {
return registry.load(null, url, CompositeComponentType.class, context);
}
}
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