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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.binding.celtix.handler;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.List;
import javax.jws.WebParam.Mode;
import javax.wsdl.Binding;
import javax.wsdl.Definition;
import javax.wsdl.WSDLException;
import javax.wsdl.extensions.ExtensibilityElement;
import javax.wsdl.extensions.soap.SOAPAddress;
import javax.xml.ws.Holder;
import javax.xml.ws.ProtocolException;
import commonj.sdo.helper.TypeHelper;
import org.apache.tuscany.binding.celtix.assembly.WebServiceBinding;
import org.apache.tuscany.binding.celtix.handler.io.SCADataBindingCallback;
import org.apache.tuscany.core.builder.BuilderException;
import org.apache.tuscany.core.builder.BuilderInitException;
import org.apache.tuscany.model.assembly.ExternalService;
import org.objectweb.celtix.Bus;
import org.objectweb.celtix.BusException;
import org.objectweb.celtix.bindings.ClientBinding;
import org.objectweb.celtix.bindings.DataBindingCallback;
import org.objectweb.celtix.bus.bindings.WSDLMetaDataCache;
import org.objectweb.celtix.bus.bindings.WSDLOperationInfo;
import org.objectweb.celtix.context.ObjectMessageContext;
import org.objectweb.celtix.ws.addressing.EndpointReferenceType;
import org.objectweb.celtix.wsdl.EndpointReferenceUtils;
import org.xmlsoap.schemas.wsdl.http.AddressType;
/**
* An ExternalWebServiceClient using Celtix
*/
public class ExternalWebServiceClient {
private Bus bus;
private TypeHelper typeHelper;
private WSDLMetaDataCache wsdlCache;
private ClientBinding clientBinding;
private WebServiceBinding wsBinding;
public ExternalWebServiceClient(ExternalService externalService) throws BuilderException {
wsBinding = (WebServiceBinding)externalService.getBindings().get(0);
bus = wsBinding.getBus();
typeHelper = wsBinding.getTypeHelper();
Definition wsdlDef = wsBinding.getWSDLDefinition();
wsdlCache = new WSDLMetaDataCache(wsdlDef, wsBinding.getWSDLPort());
try {
String key = wsdlDef.getDocumentBaseURI();
URL url = new URL(key);
EndpointReferenceType reference = EndpointReferenceUtils.getEndpointReference(url,
wsBinding.getWSDLService().getQName(),
wsBinding.getWSDLPort().getName());
String bindingId = null;
Binding binding = wsBinding.getWSDLPort().getBinding();
if (null != binding) {
List list = binding.getExtensibilityElements();
if (!list.isEmpty()) {
bindingId = ((ExtensibilityElement)list.get(0)).getElementType().getNamespaceURI();
}
}
if (bindingId == null) {
List<?> list = wsBinding.getWSDLPort().getExtensibilityElements();
for (Object ep : list) {
ExtensibilityElement ext = (ExtensibilityElement)ep;
if (ext instanceof SOAPAddress) {
bindingId = ((SOAPAddress)ext).getLocationURI();
}
if (ext instanceof AddressType) {
bindingId = ((AddressType)ext).getLocation();
}
}
}
clientBinding = bus.getBindingManager().getBindingFactory(bindingId).createClientBinding(
reference);
} catch (MalformedURLException e) {
throw new BuilderInitException(e);
} catch (BusException e) {
throw new BuilderInitException(e);
} catch (WSDLException e) {
throw new BuilderInitException(e);
} catch (IOException e) {
throw new BuilderInitException(e);
}
}
/**
* Invoke an operation on the external Web service.
*
* @param operationName the name of the WS operation to invoke
* @param args the Java object arguments to the WS operation
* @return the response from the WS as a Java object
*/
public Object invoke(String operationName, Object[] args) {
WSDLOperationInfo opInfo = wsdlCache.getOperationInfo(operationName);
if (opInfo == null) {
//REVISIT - really map the operation name to a WSDL operation
for (String opName : wsdlCache.getAllOperationInfo().keySet()) {
if (operationName.equalsIgnoreCase(opName)) {
opInfo = wsdlCache.getOperationInfo(opName);
break;
}
}
}
ObjectMessageContext objMsgContext = clientBinding.createObjectContext();
boolean hasInOut = false;
int inOutCount = 0;
Object realArgs[] = new Object[args.length];
if (opInfo.getParamsLength() == 0) {
//REVISIT - opInfo doesn't return the needed info for the wrapped doc/lit case.
//Bug in Celtix
realArgs = args;
} else {
for (int x = 0; x < args.length; x++) {
if (opInfo.getWebParam(x).mode() == Mode.IN) {
realArgs[x] = args[x];
} else {
realArgs[x] = new Holder<Object>(args[x]);
inOutCount++;
hasInOut = true;
}
}
}
objMsgContext.setMessageObjects(realArgs);
boolean isOneway = opInfo.isOneWay();
DataBindingCallback callback = new SCADataBindingCallback(opInfo, typeHelper,
wsBinding.getResourceLoader(),
hasInOut);
try {
if (isOneway) {
clientBinding.invokeOneWay(objMsgContext,
callback);
} else {
objMsgContext = clientBinding.invoke(objMsgContext,
callback);
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
if (objMsgContext.getException() != null) {
//REVISIT - Exceptions
/*
if (isValidException(objMsgContext)) {
throw (Exception)objMsgContext.getException();
} else {
throw new ProtocolException(objMsgContext.getException());
}
*/
throw new ProtocolException(objMsgContext.getException());
}
if (hasInOut) {
Object ret[] = new Object[inOutCount + 1];
ret[0] = objMsgContext.getReturn();
inOutCount = 1;
for (int x = 0; x < args.length; x++) {
if (opInfo.getWebParam(x).mode() != Mode.IN) {
Holder<?> holder = (Holder<?>)realArgs[x];
ret[inOutCount] = holder.value;
inOutCount++;
}
}
return ret;
}
return objMsgContext.getReturn();
}
}
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