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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.runtime.webapp.implementation.webapp;
import java.net.URI;
import java.net.URISyntaxException;
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 org.osoa.sca.annotations.Reference;
import org.apache.tuscany.spi.deployer.DeploymentContext;
import org.apache.tuscany.spi.extension.LoaderExtension;
import org.apache.tuscany.spi.idl.InvalidServiceContractException;
import org.apache.tuscany.spi.idl.java.InterfaceJavaIntrospector;
import org.apache.tuscany.spi.implementation.java.ProcessingException;
import org.apache.tuscany.spi.loader.IllegalSCDLNameException;
import org.apache.tuscany.spi.loader.LoaderException;
import org.apache.tuscany.spi.loader.LoaderRegistry;
import org.apache.tuscany.spi.loader.MissingResourceException;
import org.apache.tuscany.spi.loader.UnrecognizedElementException;
import org.apache.tuscany.spi.model.ModelObject;
import org.apache.tuscany.spi.model.ReferenceDefinition;
import org.apache.tuscany.spi.model.ServiceContract;
/**
* @version $Rev$ $Date$
*/
public class WebappLoader extends LoaderExtension<WebappImplementation> {
private static final QName WEBAPP = new QName("http://tuscany.apache.org/xmlns/sca/2.0-alpha", "webapp");
private final InterfaceJavaIntrospector introspector;
public WebappLoader(@Reference LoaderRegistry registry,
@Reference InterfaceJavaIntrospector introspector) {
super(registry);
this.introspector = introspector;
}
public QName getXMLType() {
return WEBAPP;
}
public WebappImplementation load(
ModelObject object,
XMLStreamReader reader,
DeploymentContext deploymentContext)
throws XMLStreamException, LoaderException {
WebappComponentType componentType = new WebappComponentType();
WebappImplementation impl = new WebappImplementation();
impl.setComponentType(componentType);
while (true) {
switch (reader.next()) {
case START_ELEMENT:
QName qname = reader.getName();
if ("reference".equals(qname.getLocalPart())) {
defineReference(componentType, reader, deploymentContext);
} else {
throw new UnrecognizedElementException(qname);
}
reader.next();
break;
case END_ELEMENT:
return impl;
}
}
}
protected void defineReference(WebappComponentType componentType,
XMLStreamReader reader,
DeploymentContext context) throws LoaderException {
String name = reader.getAttributeValue(null, "name");
URI referenceURI;
try {
referenceURI = new URI('#' + name);
} catch (URISyntaxException e) {
throw new IllegalSCDLNameException(e);
}
String className = reader.getAttributeValue(null, "interface");
if (className == null) {
className = reader.getAttributeValue(null, "class");
}
Class<?> referenceType;
try {
referenceType = context.getClassLoader().loadClass(className);
} catch (ClassNotFoundException e) {
throw new MissingResourceException(className, e);
}
ServiceContract serviceContract;
try {
serviceContract = introspector.introspect(referenceType);
} catch (InvalidServiceContractException e) {
throw new ProcessingException("Invalid service contract", name, e);
}
ReferenceDefinition definition = new ReferenceDefinition(referenceURI, serviceContract);
componentType.add(definition);
}
}
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