/*
* 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.idl.java;
import java.util.HashMap;
import java.util.Map;
import javax.xml.namespace.QName;
import javax.xml.stream.XMLStreamConstants;
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.idl.InvalidServiceContractException;
import org.apache.tuscany.spi.idl.java.JavaInterfaceProcessorRegistry;
import org.apache.tuscany.spi.idl.java.JavaServiceContract;
import org.apache.tuscany.spi.loader.InvalidValueException;
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.model.DataType;
import org.apache.tuscany.spi.model.InteractionScope;
import org.apache.tuscany.spi.model.ModelObject;
import org.apache.tuscany.core.loader.StAXUtil;
/**
* Loads a Java interface definition from an XML-based assembly file
*
* @version $Rev: 449096 $ $Date: 2006-09-22 14:36:38 -0700 (Fri, 22 Sep 2006) $
*/
public class InterfaceJavaLoader extends LoaderExtension<JavaServiceContract> {
public static final QName INTERFACE_JAVA = new QName(XML_NAMESPACE_1_0, "interface.java");
private final JavaInterfaceProcessorRegistry interfaceRegsitry;
@Constructor({"registry", "interfaceRegsitry"})
public InterfaceJavaLoader(@Autowire LoaderRegistry registry,
@Autowire JavaInterfaceProcessorRegistry interfaceRegistry) {
super(registry);
this.interfaceRegsitry = interfaceRegistry;
}
public QName getXMLType() {
return INTERFACE_JAVA;
}
public JavaServiceContract load(CompositeComponent parent,
XMLStreamReader reader,
DeploymentContext deploymentContext)
throws XMLStreamException, LoaderException {
assert INTERFACE_JAVA.equals(reader.getName());
InteractionScope interactionScope = StAXUtil.interactionScope(reader.getAttributeValue(null, "scope"));
String name = reader.getAttributeValue(null, "interface");
if (name == null) {
// allow "class" as well as seems to be a common mistake
name = reader.getAttributeValue(null, "class");
}
if (name == null) {
throw new InvalidValueException("interface name not supplied");
}
Class<?> interfaceClass = LoaderUtil.loadClass(name, deploymentContext.getClassLoader());
name = reader.getAttributeValue(null, "callbackInterface");
Class<?> callbackClass = (name != null) ? LoaderUtil.loadClass(name, deploymentContext.getClassLoader()) : null;
Map<Class<?>, ModelObject> extensions = new HashMap<Class<?>, ModelObject>();
while (true) {
int event = reader.next();
if (event == XMLStreamConstants.START_ELEMENT) {
ModelObject mo = registry.load(parent, reader, deploymentContext);
if (mo != null) {
extensions.put(mo.getClass(), mo);
}
} else if (event == XMLStreamConstants.END_ELEMENT && reader.getName().equals(INTERFACE_JAVA)) {
break;
}
}
JavaServiceContract serviceContract;
try {
serviceContract = interfaceRegsitry.introspect(interfaceClass, callbackClass);
} catch (InvalidServiceContractException e) {
LoaderException le = new LoaderException(e);
le.setIdentifier(interfaceClass.getName());
throw le;
}
// Set databinding from the SCDL extension <databinding>
DataType<?> dataType = (DataType<?>) extensions.get(DataType.class);
if (dataType != null) {
serviceContract.setDataBinding(dataType.getDataBinding());
}
serviceContract.getExtensions().putAll(extensions);
serviceContract.setInteractionScope(interactionScope);
return serviceContract;
}
}