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/**
*
* Copyright 2005 The Apache Software Foundation or its licensors, as applicable.
*
* Licensed 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.model.types.wsdl.impl;
import static org.objectweb.asm.Opcodes.ACC_ABSTRACT;
import static org.objectweb.asm.Opcodes.ACC_INTERFACE;
import static org.objectweb.asm.Opcodes.ACC_PUBLIC;
import static org.objectweb.asm.Opcodes.V1_5;
import java.util.List;
import javax.wsdl.Definition;
import javax.wsdl.Operation;
import javax.wsdl.PortType;
import javax.xml.namespace.QName;
import org.apache.tuscany.common.resource.ResourceLoader;
import org.apache.tuscany.model.assembly.AssemblyModelContext;
import org.apache.tuscany.model.assembly.impl.ServiceContractImpl;
import org.apache.tuscany.model.assembly.loader.AssemblyModelLoader;
import org.apache.tuscany.model.types.wsdl.WSDLServiceContract;
import org.apache.tuscany.model.util.XMLNameUtil;
import org.objectweb.asm.ClassWriter;
import org.objectweb.asm.Type;
import commonj.sdo.DataObject;
/**
* An implementation of WSDLServiceContract.
*/
public class WSDLServiceContractImpl extends ServiceContractImpl implements WSDLServiceContract {
private PortType portType;
private PortType callbackPortType;
private String portTypeURI;
private String callbackPortTypeURI;
/**
* Constructor
*/
public WSDLServiceContractImpl() {
}
/**
* @see org.apache.tuscany.model.types.wsdl.WSDLServiceContract#getPortType()
*/
public PortType getPortType() {
return portType;
}
/**
* @see org.apache.tuscany.model.types.wsdl.WSDLServiceContract#setPortType(javax.wsdl.PortType)
*/
public void setPortType(PortType portType) {
checkNotFrozen();
this.portType=portType;
}
/**
* @see org.apache.tuscany.model.types.wsdl.WSDLServiceContract#getCallbackPortType()
*/
public PortType getCallbackPortType() {
return callbackPortType;
}
/**
* @see org.apache.tuscany.model.types.wsdl.WSDLServiceContract#setCallbackPortType(javax.wsdl.PortType)
*/
public void setCallbackPortType(PortType portType) {
checkNotFrozen();
callbackPortType=portType;
}
/**
* @param portTypeURI The portTypeURI to set.
*/
public void setPortTypeURI(String portTypeURI) {
this.portTypeURI = portTypeURI;
}
/**
* @param callbackPortTypeURI The callbackPortTypeURI to set.
*/
public void setCallbackPortTypeURI(String callbackPortTypeURI) {
this.callbackPortTypeURI = callbackPortTypeURI;
}
/**
* @see org.apache.tuscany.model.assembly.impl.ExtensibleImpl#initialize(org.apache.tuscany.model.assembly.AssemblyModelContext)
*/
public void initialize(AssemblyModelContext modelContext) {
if (isInitialized())
return;
super.initialize(modelContext);
// Resolve the WSDL portType and callback portType
AssemblyModelLoader modelLoader=modelContext.getAssemblyLoader();
if (portTypeURI!=null && portType==null) {
portType=getPortType(modelLoader, portTypeURI);
}
if (callbackPortTypeURI!=null && callbackPortType==null) {
callbackPortType=getPortType(modelLoader, callbackPortTypeURI);
}
// Load the Java interface for the portType
if (portType!=null && getInterface()==null) {
QName qname=portType.getQName();
String interfaceName=XMLNameUtil.getFullyQualifiedClassNameFromQName(qname.getNamespaceURI(), qname.getLocalPart());
Class interfaceClass;
try {
// Load the interface
interfaceClass=modelContext.getApplicationResourceLoader().loadClass(interfaceName);
} catch (ClassNotFoundException e) {
// Generate the interface on the fly
interfaceClass=generateJavaInterface(modelContext.getApplicationResourceLoader(), portType, interfaceName);
}
super.setInterface(interfaceClass);
}
// Load the Java interface for the callback portType
if (callbackPortType!=null && getCallbackInterface()==null) {
QName qname=callbackPortType.getQName();
String interfaceName=XMLNameUtil.getFullyQualifiedClassNameFromQName(qname.getNamespaceURI(), qname.getLocalPart());
Class interfaceClass;
try {
// Load the interface
interfaceClass=modelContext.getApplicationResourceLoader().loadClass(interfaceName);
} catch (ClassNotFoundException e) {
// Generate the interface on the fly
interfaceClass=generateJavaInterface(modelContext.getApplicationResourceLoader(), portType, interfaceName);
}
super.setCallbackInterface(interfaceClass);
}
}
/**
* Get a portType from the given uri
* @param loader
* @param uri
* @return
*/
private PortType getPortType(AssemblyModelLoader loader, String uri) {
// Get the WSDL port namespace and name
int h=uri.indexOf('#');
String namespace=uri.substring(0,h);
String name=uri.substring(h+1);
QName qname=new QName(namespace, name);
// Load the WSDL definitions for the given namespace
List<Definition> definitions=loader.loadDefinitions(namespace);
if (definitions==null)
throw new IllegalArgumentException("Cannot find WSDL definition for "+namespace);
for (Definition definition: definitions) {
// Find the port with the given name
PortType portType=definition.getPortType(qname);
return portType;
}
throw new IllegalArgumentException("Cannot find WSDL portType "+uri);
}
/**
* Generate a Java interface from a WSDL portType.
* @param portType
* @param interfaceName
* @return
*/
private Class generateJavaInterface(ResourceLoader resourceLoader, PortType portType, String interfaceName) {
ClassWriter cw=new ClassWriter(false);
// Generate the interface
interfaceName=interfaceName.replace('.', '/');
cw.visit(V1_5, ACC_PUBLIC + ACC_ABSTRACT + ACC_INTERFACE, interfaceName, null, "java/lang/Object", new String[0]);
// Generate methods from the WSDL operations
for (Operation operation : (List<Operation>)portType.getOperations()) {
String methodName=XMLNameUtil.getJavaNameFromXMLName(operation.getName(), false);
//FIXME integrate XSD to Java type mapping here
String inputType = Type.getDescriptor(String.class);
String outputType = Type.getDescriptor(String.class);
cw.visitMethod(ACC_PUBLIC + ACC_ABSTRACT, methodName, "("+inputType+")"+outputType, null, null).visitEnd();
}
// Generate the bytecodes
cw.visitEnd();
byte[] bytes=cw.toByteArray();
// Add the class to the resource loader
Class interfaceClass=(Class)resourceLoader.addClass(bytes);
return interfaceClass;
}
}
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