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Posted to dev@tuscany.apache.org by Vamsavardhana Reddy <c1...@gmail.com> on 2008/05/23 19:42:13 UTC
TransformationException when using java interface definition with generics
Can someone point to me what I am doing wrong or if it is a problem in
Tuscany? Details follow...
I have the following service interface:
@Remotable
public interface HelloService<E> {
public E getGreetings(E name);
}
--------
The following is the service implementation:
@Service(HelloService.class)
public class HelloServiceImpl implements HelloService<String> {
public String getGreetings(String name) {
return "Hello "+name;
}
}
--------
The following is the client interface that invokes the service:
public interface HelloServiceClient<E> {
E getGreetingsForward(E name);
}
--------
The following is the client implementation:
@Service(HelloServiceClient.class)
public class HelloServiceClientImpl implements HelloServiceClient<String> {
private HelloService<String> service;
@Reference
public void setHelloService(HelloService<String> service) {
this.service = service;
}
public String getGreetingsForward(String name) {
return service.getGreetings(name);
}
}
--------
I have a HelloService component and two HelloServiceClient components in my
composite (given below):
<composite xmlns="http://www.osoa.org/xmlns/sca/1.0"
xmlns:wsdli="http://www.w3.org/2006/01/wsdl-instance"
name="HelloService">
<!-- Clients to test the service -->
<component name="HelloServiceClientWSComponent">
<implementation.java
class="org.apache.tuscany.sca.itest.impl.HelloServiceClientImpl" />
<reference name="helloService">
<interface.java
interface="org.apache.tuscany.sca.itest.HelloService"/>
<binding.ws uri="http://localhost:8080/hs-ep1"/>
</reference>
</component>
<component name="HelloServiceClientSCAComponent">
<implementation.java
class="org.apache.tuscany.sca.itest.impl.HelloServiceClientImpl" />
<reference name="helloService" target="HelloServiceComponent">
<binding.sca/>
</reference>
</component>
<!-- Components used to implement the services -->
<component name="HelloServiceComponent">
<implementation.java
class="org.apache.tuscany.sca.itest.impl.HelloServiceImpl"/>
<service name="HelloService">
<interface.java
interface="org.apache.tuscany.sca.itest.HelloService"/>
<binding.ws uri="http://localhost:8080/hs-ep1"/>
<binding.sca/>
</service>
</component>
</composite>
--------
The following is the code I am using to invoke the service via client
components:
domain = SCADomain.newInstance("hello.composite");
String name = "Me <String> SCA";
HelloServiceClient<String> helloServiceClient =
domain.getService(HelloServiceClient.class,
"HelloServiceClientSCAComponent");
String resp = helloServiceClient.getGreetingsForward(name);
System.out.println(resp);
name = "Me <String> WS";
helloServiceClient = domain.getService(HelloServiceClient.class,
"HelloServiceClientWSComponent");
resp = helloServiceClient.getGreetingsForward(name);
System.out.println(resp);
--------
It works fine when I invoke the service using the client component that uses
SCA binding to connect to the service. I get the following exception when I
use the client component that uses WS binding.
May 23, 2008 11:04:50 PM
org.apache.tuscany.sca.binding.ws.axis2.Axis2ServiceInOutSyncMessageReceiver
invokeBusinessLogic
SEVERE: org.apache.tuscany.sca.databinding.TransformationException: No path
found for the transformation: org.apache.axiom.om.OMElement->null
org.osoa.sca.ServiceRuntimeException:
org.apache.tuscany.sca.databinding.TransformationException: No path found
for the transformation: org.apache.axiom.om.OMElement->null
at
org.apache.tuscany.sca.core.invocation.RuntimeWireInvoker.invoke(RuntimeWireInvoker.java:119)
at
org.apache.tuscany.sca.core.invocation.RuntimeWireInvoker.invoke(RuntimeWireInvoker.java:85)
at
org.apache.tuscany.sca.core.invocation.RuntimeWireInvoker.invoke(RuntimeWireInvoker.java:79)
at
org.apache.tuscany.sca.core.assembly.RuntimeWireImpl.invoke(RuntimeWireImpl.java:138)
at
org.apache.tuscany.sca.binding.ws.axis2.Axis2ServiceProvider.invokeTarget(Axis2ServiceProvider.java:669)
at
org.apache.tuscany.sca.binding.ws.axis2.Axis2ServiceInOutSyncMessageReceiver.invokeBusinessLogic(Axis2ServiceInOutSyncMessageReceiver.java:68)
at
org.apache.axis2.receivers.AbstractInOutSyncMessageReceiver.invokeBusinessLogic(AbstractInOutSyncMessageReceiver.java:42)
at
org.apache.axis2.receivers.AbstractMessageReceiver.receive(AbstractMessageReceiver.java:96)
at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:145)
at
org.apache.axis2.transport.http.HTTPTransportUtils.processHTTPPostRequest(HTTPTransportUtils.java:275)
at
org.apache.axis2.transport.http.AxisServlet.doPost(AxisServlet.java:120)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at
org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487)
at
org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:362)
at
org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
at
org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:726)
at
org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:139)
at org.mortbay.jetty.Server.handle(Server.java:324)
at
org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:505)
at
org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:842)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:648)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:380)
at
org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:395)
at org.apache.tuscany.sca.core.work.Jsr237Work.run(Jsr237Work.java:63)
at
org.apache.tuscany.sca.core.work.ThreadPoolWorkManager$DecoratingWork.run(ThreadPoolWorkManager.java:221)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:650)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:675)
at java.lang.Thread.run(Thread.java:595)
Caused by: org.apache.tuscany.sca.databinding.TransformationException: No
path found for the transformation: org.apache.axiom.om.OMElement->null
at
org.apache.tuscany.sca.databinding.impl.MediatorImpl.getTransformerChain(MediatorImpl.java:162)
at
org.apache.tuscany.sca.databinding.impl.MediatorImpl.mediate(MediatorImpl.java:67)
at
org.apache.tuscany.sca.core.databinding.transformers.Input2InputTransformer.transform(Input2InputTransformer.java:181)
at
org.apache.tuscany.sca.core.databinding.transformers.Input2InputTransformer.transform(Input2InputTransformer.java:45)
at
org.apache.tuscany.sca.databinding.impl.MediatorImpl.mediate(MediatorImpl.java:79)
at
org.apache.tuscany.sca.core.databinding.wire.DataTransformationInterceptor.transform(DataTransformationInterceptor.java:186)
at
org.apache.tuscany.sca.core.databinding.wire.DataTransformationInterceptor.invoke(DataTransformationInterceptor.java:76)
at
org.apache.tuscany.sca.core.invocation.RuntimeWireInvoker.invoke(RuntimeWireInvoker.java:110)
... 29 more
Re: TransformationException when using java interface definition with generics
Posted by Vamsavardhana Reddy <c1...@gmail.com>.
Don't know what changed in these three days, but, it is working now :)
++Vamsi
On Sat, May 24, 2008 at 4:49 PM, Vamsavardhana Reddy <c1...@gmail.com>
wrote:
> Attached generics-problem.patch to recreate the problem.
>
> ++Vamsi
>
>
> On Sat, May 24, 2008 at 4:30 PM, Vamsavardhana Reddy <c1...@gmail.com>
> wrote:
>
>>
>>
>> On Fri, May 23, 2008 at 11:53 PM, Raymond Feng <en...@gmail.com>
>> wrote:
>>
>>> Hi,
>>>
>>> It's not clear from the SCA spec how generics impacts the interface
>>> mapping. We need some clarifications there.
>>>
>>> The JAXWS 2.1 spec uses the erased type and only honor the type argument
>>> in Collection. At this moment, Tuscany supports the following case:
>>>
>>> @Remotable
>>> public interface MyHelloService extends HelloService<String> {
>>> }
>>>
>>> And use MyHelloService as the service interface for HelloServiceImpl.
>>
>> Hmm... I tried this part and it does not seem to work.
>> SCADomain.newInstance() is throwing an exception. Stack trace given below:
>>
>> org.osoa.sca.ServiceRuntimeException:
>> org.osoa.sca.ServiceRuntimeException:
>> org.apache.tuscany.sca.core.assembly.ActivationException:
>> java.lang.NullPointerException
>> at
>> org.apache.tuscany.sca.host.embedded.SCADomain.createNewInstance(SCADomain.java:276)
>> at
>> org.apache.tuscany.sca.host.embedded.SCADomain.newInstance(SCADomain.java:70)
>> at
>> org.apache.tuscany.sca.itest.DatabindingTestCase.setUp(DatabindingTestCase.java:39)
>> at junit.framework.TestCase.runBare(TestCase.java:132)
>> at junit.framework.TestResult$1.protect(TestResult.java:110)
>> at junit.framework.TestResult.runProtected(TestResult.java:128)
>> at junit.framework.TestResult.run(TestResult.java:113)
>> at junit.framework.TestCase.run(TestCase.java:124)
>> at junit.framework.TestSuite.runTest(TestSuite.java:232)
>> at junit.framework.TestSuite.run(TestSuite.java:227)
>> at
>> org.junit.internal.runners.OldTestClassRunner.run(OldTestClassRunner.java:35)
>> at
>> org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:38)
>> at
>> org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
>> at
>> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:460)
>> at
>> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:673)
>> at
>> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:386)
>> at
>> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)
>> Caused by: org.osoa.sca.ServiceRuntimeException:
>> org.apache.tuscany.sca.core.assembly.ActivationException:
>> java.lang.NullPointerException
>> at
>> org.apache.tuscany.sca.host.embedded.impl.DefaultSCADomain.init(DefaultSCADomain.java:239)
>> at
>> org.apache.tuscany.sca.host.embedded.impl.DefaultSCADomain.<init>(DefaultSCADomain.java:113)
>> at
>> org.apache.tuscany.sca.host.embedded.SCADomain.createNewInstance(SCADomain.java:242)
>> ... 16 more
>> Caused by: org.apache.tuscany.sca.core.assembly.ActivationException:
>> java.lang.NullPointerException
>> at
>> org.apache.tuscany.sca.core.assembly.CompositeActivatorImpl.activate(CompositeActivatorImpl.java:986)
>> at
>> org.apache.tuscany.sca.host.embedded.impl.DefaultSCADomain.init(DefaultSCADomain.java:237)
>> ... 18 more
>> Caused by: java.lang.NullPointerException
>> at
>> org.apache.tuscany.sca.interfacedef.wsdl.impl.WSDLOperationIntrospectorImpl.getOperation(WSDLOperationIntrospectorImpl.java:212)
>> at
>> org.apache.tuscany.sca.interfacedef.wsdl.java2wsdl.Java2WSDLHelper.createWSDLInterfaceContract(Java2WSDLHelper.java:246)
>> at
>> org.apache.tuscany.sca.binding.ws.axis2.Axis2ReferenceBindingProvider.<init>(Axis2ReferenceBindingProvider.java:56)
>> at
>> org.apache.tuscany.sca.binding.ws.axis2.Axis2BindingProviderFactory.createReferenceBindingProvider(Axis2BindingProviderFactory.java:66)
>> at
>> org.apache.tuscany.sca.binding.ws.axis2.Axis2BindingProviderFactory.createReferenceBindingProvider(Axis2BindingProviderFactory.java:46)
>> at
>> org.apache.tuscany.sca.provider.DefaultProviderFactoryExtensionPoint$LazyBindingProviderFactory.createReferenceBindingProvider(DefaultProviderFactoryExtensionPoint.java:230)
>> at
>> org.apache.tuscany.sca.core.assembly.CompositeActivatorImpl.addReferenceBindingProvider(CompositeActivatorImpl.java:262)
>> at
>> org.apache.tuscany.sca.core.assembly.CompositeActivatorImpl.activate(CompositeActivatorImpl.java:142)
>> at
>> org.apache.tuscany.sca.core.assembly.CompositeActivatorImpl.activate(CompositeActivatorImpl.java:982)
>> ... 19 more
>>
>>
>>>
>>> I don't think it's wise to try to cover other variations before we get it
>>> clarified by the spec.
>>>
>>> Thanks,
>>> Raymond
>>> --------------------------------------------------
>>> From: "Vamsavardhana Reddy" <c1...@gmail.com>
>>> Sent: Friday, May 23, 2008 10:42 AM
>>> To: <tu...@ws.apache.org>
>>> Subject: TransformationException when using java interface definition
>>> with generics
>>>
>>>
>>> Can someone point to me what I am doing wrong or if it is a problem in
>>>> Tuscany? Details follow...
>>>>
>>>> I have the following service interface:
>>>> @Remotable
>>>> public interface HelloService<E> {
>>>> public E getGreetings(E name);
>>>> }
>>>> --------
>>>> The following is the service implementation:
>>>> @Service(HelloService.class)
>>>> public class HelloServiceImpl implements HelloService<String> {
>>>>
>>>> public String getGreetings(String name) {
>>>> return "Hello "+name;
>>>> }
>>>> }
>>>> --------
>>>> The following is the client interface that invokes the service:
>>>> public interface HelloServiceClient<E> {
>>>> E getGreetingsForward(E name);
>>>> }
>>>> --------
>>>> The following is the client implementation:
>>>> @Service(HelloServiceClient.class)
>>>> public class HelloServiceClientImpl implements
>>>> HelloServiceClient<String> {
>>>>
>>>> private HelloService<String> service;
>>>>
>>>> @Reference
>>>> public void setHelloService(HelloService<String> service) {
>>>> this.service = service;
>>>> }
>>>>
>>>> public String getGreetingsForward(String name) {
>>>> return service.getGreetings(name);
>>>> }
>>>> }
>>>> --------
>>>> I have a HelloService component and two HelloServiceClient components in
>>>> my
>>>> composite (given below):
>>>> <composite xmlns="http://www.osoa.org/xmlns/sca/1.0"
>>>> xmlns:wsdli="http://www.w3.org/2006/01/wsdl-instance"
>>>> name="HelloService">
>>>>
>>>> <!-- Clients to test the service -->
>>>> <component name="HelloServiceClientWSComponent">
>>>> <implementation.java
>>>> class="org.apache.tuscany.sca.itest.impl.HelloServiceClientImpl" />
>>>> <reference name="helloService">
>>>> <interface.java
>>>> interface="org.apache.tuscany.sca.itest.HelloService"/>
>>>> <binding.ws uri="http://localhost:8080/hs-ep1"/>
>>>> </reference>
>>>> </component>
>>>> <component name="HelloServiceClientSCAComponent">
>>>> <implementation.java
>>>> class="org.apache.tuscany.sca.itest.impl.HelloServiceClientImpl" />
>>>> <reference name="helloService" target="HelloServiceComponent">
>>>> <binding.sca/>
>>>> </reference>
>>>> </component>
>>>>
>>>> <!-- Components used to implement the services -->
>>>> <component name="HelloServiceComponent">
>>>> <implementation.java
>>>> class="org.apache.tuscany.sca.itest.impl.HelloServiceImpl"/>
>>>> <service name="HelloService">
>>>> <interface.java
>>>> interface="org.apache.tuscany.sca.itest.HelloService"/>
>>>> <binding.ws uri="http://localhost:8080/hs-ep1"/>
>>>> <binding.sca/>
>>>> </service>
>>>> </component>
>>>> </composite>
>>>> --------
>>>> The following is the code I am using to invoke the service via client
>>>> components:
>>>> domain = SCADomain.newInstance("hello.composite");
>>>> String name = "Me <String> SCA";
>>>> HelloServiceClient<String> helloServiceClient =
>>>> domain.getService(HelloServiceClient.class,
>>>> "HelloServiceClientSCAComponent");
>>>> String resp = helloServiceClient.getGreetingsForward(name);
>>>> System.out.println(resp);
>>>>
>>>> name = "Me <String> WS";
>>>> helloServiceClient = domain.getService(HelloServiceClient.class,
>>>> "HelloServiceClientWSComponent");
>>>> resp = helloServiceClient.getGreetingsForward(name);
>>>> System.out.println(resp);
>>>> --------
>>>>
>>>> It works fine when I invoke the service using the client component that
>>>> uses
>>>> SCA binding to connect to the service. I get the following exception
>>>> when I
>>>> use the client component that uses WS binding.
>>>>
>>>> May 23, 2008 11:04:50 PM
>>>>
>>>> org.apache.tuscany.sca.binding.ws.axis2.Axis2ServiceInOutSyncMessageReceiver
>>>> invokeBusinessLogic
>>>> SEVERE: org.apache.tuscany.sca.databinding.TransformationException: No
>>>> path
>>>> found for the transformation: org.apache.axiom.om.OMElement->null
>>>> org.osoa.sca.ServiceRuntimeException:
>>>> org.apache.tuscany.sca.databinding.TransformationException: No path
>>>> found
>>>> for the transformation: org.apache.axiom.om.OMElement->null
>>>> at
>>>>
>>>> org.apache.tuscany.sca.core.invocation.RuntimeWireInvoker.invoke(RuntimeWireInvoker.java:119)
>>>> at
>>>>
>>>> org.apache.tuscany.sca.core.invocation.RuntimeWireInvoker.invoke(RuntimeWireInvoker.java:85)
>>>> at
>>>>
>>>> org.apache.tuscany.sca.core.invocation.RuntimeWireInvoker.invoke(RuntimeWireInvoker.java:79)
>>>> at
>>>>
>>>> org.apache.tuscany.sca.core.assembly.RuntimeWireImpl.invoke(RuntimeWireImpl.java:138)
>>>> at
>>>>
>>>> org.apache.tuscany.sca.binding.ws.axis2.Axis2ServiceProvider.invokeTarget(Axis2ServiceProvider.java:669)
>>>> at
>>>>
>>>> org.apache.tuscany.sca.binding.ws.axis2.Axis2ServiceInOutSyncMessageReceiver.invokeBusinessLogic(Axis2ServiceInOutSyncMessageReceiver.java:68)
>>>> at
>>>>
>>>> org.apache.axis2.receivers.AbstractInOutSyncMessageReceiver.invokeBusinessLogic(AbstractInOutSyncMessageReceiver.java:42)
>>>> at
>>>>
>>>> org.apache.axis2.receivers.AbstractMessageReceiver.receive(AbstractMessageReceiver.java:96)
>>>> at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:145)
>>>> at
>>>>
>>>> org.apache.axis2.transport.http.HTTPTransportUtils.processHTTPPostRequest(HTTPTransportUtils.java:275)
>>>> at
>>>> org.apache.axis2.transport.http.AxisServlet.doPost(AxisServlet.java:120)
>>>> at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
>>>> at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
>>>> at
>>>> org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487)
>>>> at
>>>> org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:362)
>>>> at
>>>> org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
>>>> at
>>>> org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:726)
>>>> at
>>>> org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:139)
>>>> at org.mortbay.jetty.Server.handle(Server.java:324)
>>>> at
>>>> org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:505)
>>>> at
>>>>
>>>> org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:842)
>>>> at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:648)
>>>> at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211)
>>>> at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:380)
>>>> at
>>>>
>>>> org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:395)
>>>> at org.apache.tuscany.sca.core.work.Jsr237Work.run(Jsr237Work.java:63)
>>>> at
>>>>
>>>> org.apache.tuscany.sca.core.work.ThreadPoolWorkManager$DecoratingWork.run(ThreadPoolWorkManager.java:221)
>>>> at
>>>>
>>>> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:650)
>>>> at
>>>>
>>>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:675)
>>>> at java.lang.Thread.run(Thread.java:595)
>>>> Caused by: org.apache.tuscany.sca.databinding.TransformationException:
>>>> No
>>>> path found for the transformation: org.apache.axiom.om.OMElement->null
>>>> at
>>>>
>>>> org.apache.tuscany.sca.databinding.impl.MediatorImpl.getTransformerChain(MediatorImpl.java:162)
>>>> at
>>>>
>>>> org.apache.tuscany.sca.databinding.impl.MediatorImpl.mediate(MediatorImpl.java:67)
>>>> at
>>>>
>>>> org.apache.tuscany.sca.core.databinding.transformers.Input2InputTransformer.transform(Input2InputTransformer.java:181)
>>>> at
>>>>
>>>> org.apache.tuscany.sca.core.databinding.transformers.Input2InputTransformer.transform(Input2InputTransformer.java:45)
>>>> at
>>>>
>>>> org.apache.tuscany.sca.databinding.impl.MediatorImpl.mediate(MediatorImpl.java:79)
>>>> at
>>>>
>>>> org.apache.tuscany.sca.core.databinding.wire.DataTransformationInterceptor.transform(DataTransformationInterceptor.java:186)
>>>> at
>>>>
>>>> org.apache.tuscany.sca.core.databinding.wire.DataTransformationInterceptor.invoke(DataTransformationInterceptor.java:76)
>>>> at
>>>>
>>>> org.apache.tuscany.sca.core.invocation.RuntimeWireInvoker.invoke(RuntimeWireInvoker.java:110)
>>>> ... 29 more
>>>>
>>>>
>>
>
Re: TransformationException when using java interface definition with generics
Posted by Vamsavardhana Reddy <c1...@gmail.com>.
Attached generics-problem.patch to recreate the problem.
++Vamsi
On Sat, May 24, 2008 at 4:30 PM, Vamsavardhana Reddy <c1...@gmail.com>
wrote:
>
>
> On Fri, May 23, 2008 at 11:53 PM, Raymond Feng <en...@gmail.com>
> wrote:
>
>> Hi,
>>
>> It's not clear from the SCA spec how generics impacts the interface
>> mapping. We need some clarifications there.
>>
>> The JAXWS 2.1 spec uses the erased type and only honor the type argument
>> in Collection. At this moment, Tuscany supports the following case:
>>
>> @Remotable
>> public interface MyHelloService extends HelloService<String> {
>> }
>>
>> And use MyHelloService as the service interface for HelloServiceImpl.
>
> Hmm... I tried this part and it does not seem to work.
> SCADomain.newInstance() is throwing an exception. Stack trace given below:
>
> org.osoa.sca.ServiceRuntimeException: org.osoa.sca.ServiceRuntimeException:
> org.apache.tuscany.sca.core.assembly.ActivationException:
> java.lang.NullPointerException
> at
> org.apache.tuscany.sca.host.embedded.SCADomain.createNewInstance(SCADomain.java:276)
> at
> org.apache.tuscany.sca.host.embedded.SCADomain.newInstance(SCADomain.java:70)
> at
> org.apache.tuscany.sca.itest.DatabindingTestCase.setUp(DatabindingTestCase.java:39)
> at junit.framework.TestCase.runBare(TestCase.java:132)
> at junit.framework.TestResult$1.protect(TestResult.java:110)
> at junit.framework.TestResult.runProtected(TestResult.java:128)
> at junit.framework.TestResult.run(TestResult.java:113)
> at junit.framework.TestCase.run(TestCase.java:124)
> at junit.framework.TestSuite.runTest(TestSuite.java:232)
> at junit.framework.TestSuite.run(TestSuite.java:227)
> at
> org.junit.internal.runners.OldTestClassRunner.run(OldTestClassRunner.java:35)
> at
> org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:38)
> at
> org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
> at
> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:460)
> at
> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:673)
> at
> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:386)
> at
> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)
> Caused by: org.osoa.sca.ServiceRuntimeException:
> org.apache.tuscany.sca.core.assembly.ActivationException:
> java.lang.NullPointerException
> at
> org.apache.tuscany.sca.host.embedded.impl.DefaultSCADomain.init(DefaultSCADomain.java:239)
> at
> org.apache.tuscany.sca.host.embedded.impl.DefaultSCADomain.<init>(DefaultSCADomain.java:113)
> at
> org.apache.tuscany.sca.host.embedded.SCADomain.createNewInstance(SCADomain.java:242)
> ... 16 more
> Caused by: org.apache.tuscany.sca.core.assembly.ActivationException:
> java.lang.NullPointerException
> at
> org.apache.tuscany.sca.core.assembly.CompositeActivatorImpl.activate(CompositeActivatorImpl.java:986)
> at
> org.apache.tuscany.sca.host.embedded.impl.DefaultSCADomain.init(DefaultSCADomain.java:237)
> ... 18 more
> Caused by: java.lang.NullPointerException
> at
> org.apache.tuscany.sca.interfacedef.wsdl.impl.WSDLOperationIntrospectorImpl.getOperation(WSDLOperationIntrospectorImpl.java:212)
> at
> org.apache.tuscany.sca.interfacedef.wsdl.java2wsdl.Java2WSDLHelper.createWSDLInterfaceContract(Java2WSDLHelper.java:246)
> at
> org.apache.tuscany.sca.binding.ws.axis2.Axis2ReferenceBindingProvider.<init>(Axis2ReferenceBindingProvider.java:56)
> at
> org.apache.tuscany.sca.binding.ws.axis2.Axis2BindingProviderFactory.createReferenceBindingProvider(Axis2BindingProviderFactory.java:66)
> at
> org.apache.tuscany.sca.binding.ws.axis2.Axis2BindingProviderFactory.createReferenceBindingProvider(Axis2BindingProviderFactory.java:46)
> at
> org.apache.tuscany.sca.provider.DefaultProviderFactoryExtensionPoint$LazyBindingProviderFactory.createReferenceBindingProvider(DefaultProviderFactoryExtensionPoint.java:230)
> at
> org.apache.tuscany.sca.core.assembly.CompositeActivatorImpl.addReferenceBindingProvider(CompositeActivatorImpl.java:262)
> at
> org.apache.tuscany.sca.core.assembly.CompositeActivatorImpl.activate(CompositeActivatorImpl.java:142)
> at
> org.apache.tuscany.sca.core.assembly.CompositeActivatorImpl.activate(CompositeActivatorImpl.java:982)
> ... 19 more
>
>
>>
>> I don't think it's wise to try to cover other variations before we get it
>> clarified by the spec.
>>
>> Thanks,
>> Raymond
>> --------------------------------------------------
>> From: "Vamsavardhana Reddy" <c1...@gmail.com>
>> Sent: Friday, May 23, 2008 10:42 AM
>> To: <tu...@ws.apache.org>
>> Subject: TransformationException when using java interface definition with
>> generics
>>
>>
>> Can someone point to me what I am doing wrong or if it is a problem in
>>> Tuscany? Details follow...
>>>
>>> I have the following service interface:
>>> @Remotable
>>> public interface HelloService<E> {
>>> public E getGreetings(E name);
>>> }
>>> --------
>>> The following is the service implementation:
>>> @Service(HelloService.class)
>>> public class HelloServiceImpl implements HelloService<String> {
>>>
>>> public String getGreetings(String name) {
>>> return "Hello "+name;
>>> }
>>> }
>>> --------
>>> The following is the client interface that invokes the service:
>>> public interface HelloServiceClient<E> {
>>> E getGreetingsForward(E name);
>>> }
>>> --------
>>> The following is the client implementation:
>>> @Service(HelloServiceClient.class)
>>> public class HelloServiceClientImpl implements HelloServiceClient<String>
>>> {
>>>
>>> private HelloService<String> service;
>>>
>>> @Reference
>>> public void setHelloService(HelloService<String> service) {
>>> this.service = service;
>>> }
>>>
>>> public String getGreetingsForward(String name) {
>>> return service.getGreetings(name);
>>> }
>>> }
>>> --------
>>> I have a HelloService component and two HelloServiceClient components in
>>> my
>>> composite (given below):
>>> <composite xmlns="http://www.osoa.org/xmlns/sca/1.0"
>>> xmlns:wsdli="http://www.w3.org/2006/01/wsdl-instance"
>>> name="HelloService">
>>>
>>> <!-- Clients to test the service -->
>>> <component name="HelloServiceClientWSComponent">
>>> <implementation.java
>>> class="org.apache.tuscany.sca.itest.impl.HelloServiceClientImpl" />
>>> <reference name="helloService">
>>> <interface.java
>>> interface="org.apache.tuscany.sca.itest.HelloService"/>
>>> <binding.ws uri="http://localhost:8080/hs-ep1"/>
>>> </reference>
>>> </component>
>>> <component name="HelloServiceClientSCAComponent">
>>> <implementation.java
>>> class="org.apache.tuscany.sca.itest.impl.HelloServiceClientImpl" />
>>> <reference name="helloService" target="HelloServiceComponent">
>>> <binding.sca/>
>>> </reference>
>>> </component>
>>>
>>> <!-- Components used to implement the services -->
>>> <component name="HelloServiceComponent">
>>> <implementation.java
>>> class="org.apache.tuscany.sca.itest.impl.HelloServiceImpl"/>
>>> <service name="HelloService">
>>> <interface.java
>>> interface="org.apache.tuscany.sca.itest.HelloService"/>
>>> <binding.ws uri="http://localhost:8080/hs-ep1"/>
>>> <binding.sca/>
>>> </service>
>>> </component>
>>> </composite>
>>> --------
>>> The following is the code I am using to invoke the service via client
>>> components:
>>> domain = SCADomain.newInstance("hello.composite");
>>> String name = "Me <String> SCA";
>>> HelloServiceClient<String> helloServiceClient =
>>> domain.getService(HelloServiceClient.class,
>>> "HelloServiceClientSCAComponent");
>>> String resp = helloServiceClient.getGreetingsForward(name);
>>> System.out.println(resp);
>>>
>>> name = "Me <String> WS";
>>> helloServiceClient = domain.getService(HelloServiceClient.class,
>>> "HelloServiceClientWSComponent");
>>> resp = helloServiceClient.getGreetingsForward(name);
>>> System.out.println(resp);
>>> --------
>>>
>>> It works fine when I invoke the service using the client component that
>>> uses
>>> SCA binding to connect to the service. I get the following exception
>>> when I
>>> use the client component that uses WS binding.
>>>
>>> May 23, 2008 11:04:50 PM
>>>
>>> org.apache.tuscany.sca.binding.ws.axis2.Axis2ServiceInOutSyncMessageReceiver
>>> invokeBusinessLogic
>>> SEVERE: org.apache.tuscany.sca.databinding.TransformationException: No
>>> path
>>> found for the transformation: org.apache.axiom.om.OMElement->null
>>> org.osoa.sca.ServiceRuntimeException:
>>> org.apache.tuscany.sca.databinding.TransformationException: No path found
>>> for the transformation: org.apache.axiom.om.OMElement->null
>>> at
>>>
>>> org.apache.tuscany.sca.core.invocation.RuntimeWireInvoker.invoke(RuntimeWireInvoker.java:119)
>>> at
>>>
>>> org.apache.tuscany.sca.core.invocation.RuntimeWireInvoker.invoke(RuntimeWireInvoker.java:85)
>>> at
>>>
>>> org.apache.tuscany.sca.core.invocation.RuntimeWireInvoker.invoke(RuntimeWireInvoker.java:79)
>>> at
>>>
>>> org.apache.tuscany.sca.core.assembly.RuntimeWireImpl.invoke(RuntimeWireImpl.java:138)
>>> at
>>>
>>> org.apache.tuscany.sca.binding.ws.axis2.Axis2ServiceProvider.invokeTarget(Axis2ServiceProvider.java:669)
>>> at
>>>
>>> org.apache.tuscany.sca.binding.ws.axis2.Axis2ServiceInOutSyncMessageReceiver.invokeBusinessLogic(Axis2ServiceInOutSyncMessageReceiver.java:68)
>>> at
>>>
>>> org.apache.axis2.receivers.AbstractInOutSyncMessageReceiver.invokeBusinessLogic(AbstractInOutSyncMessageReceiver.java:42)
>>> at
>>>
>>> org.apache.axis2.receivers.AbstractMessageReceiver.receive(AbstractMessageReceiver.java:96)
>>> at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:145)
>>> at
>>>
>>> org.apache.axis2.transport.http.HTTPTransportUtils.processHTTPPostRequest(HTTPTransportUtils.java:275)
>>> at
>>> org.apache.axis2.transport.http.AxisServlet.doPost(AxisServlet.java:120)
>>> at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
>>> at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
>>> at
>>> org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487)
>>> at
>>> org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:362)
>>> at
>>> org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
>>> at
>>> org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:726)
>>> at
>>> org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:139)
>>> at org.mortbay.jetty.Server.handle(Server.java:324)
>>> at
>>> org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:505)
>>> at
>>>
>>> org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:842)
>>> at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:648)
>>> at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211)
>>> at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:380)
>>> at
>>>
>>> org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:395)
>>> at org.apache.tuscany.sca.core.work.Jsr237Work.run(Jsr237Work.java:63)
>>> at
>>>
>>> org.apache.tuscany.sca.core.work.ThreadPoolWorkManager$DecoratingWork.run(ThreadPoolWorkManager.java:221)
>>> at
>>>
>>> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:650)
>>> at
>>>
>>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:675)
>>> at java.lang.Thread.run(Thread.java:595)
>>> Caused by: org.apache.tuscany.sca.databinding.TransformationException: No
>>> path found for the transformation: org.apache.axiom.om.OMElement->null
>>> at
>>>
>>> org.apache.tuscany.sca.databinding.impl.MediatorImpl.getTransformerChain(MediatorImpl.java:162)
>>> at
>>>
>>> org.apache.tuscany.sca.databinding.impl.MediatorImpl.mediate(MediatorImpl.java:67)
>>> at
>>>
>>> org.apache.tuscany.sca.core.databinding.transformers.Input2InputTransformer.transform(Input2InputTransformer.java:181)
>>> at
>>>
>>> org.apache.tuscany.sca.core.databinding.transformers.Input2InputTransformer.transform(Input2InputTransformer.java:45)
>>> at
>>>
>>> org.apache.tuscany.sca.databinding.impl.MediatorImpl.mediate(MediatorImpl.java:79)
>>> at
>>>
>>> org.apache.tuscany.sca.core.databinding.wire.DataTransformationInterceptor.transform(DataTransformationInterceptor.java:186)
>>> at
>>>
>>> org.apache.tuscany.sca.core.databinding.wire.DataTransformationInterceptor.invoke(DataTransformationInterceptor.java:76)
>>> at
>>>
>>> org.apache.tuscany.sca.core.invocation.RuntimeWireInvoker.invoke(RuntimeWireInvoker.java:110)
>>> ... 29 more
>>>
>>>
>
Re: TransformationException when using java interface definition with generics
Posted by Vamsavardhana Reddy <c1...@gmail.com>.
On Fri, May 23, 2008 at 11:53 PM, Raymond Feng <en...@gmail.com> wrote:
> Hi,
>
> It's not clear from the SCA spec how generics impacts the interface
> mapping. We need some clarifications there.
>
> The JAXWS 2.1 spec uses the erased type and only honor the type argument in
> Collection. At this moment, Tuscany supports the following case:
>
> @Remotable
> public interface MyHelloService extends HelloService<String> {
> }
>
> And use MyHelloService as the service interface for HelloServiceImpl.
Hmm... I tried this part and it does not seem to work.
SCADomain.newInstance() is throwing an exception. Stack trace given below:
org.osoa.sca.ServiceRuntimeException: org.osoa.sca.ServiceRuntimeException:
org.apache.tuscany.sca.core.assembly.ActivationException:
java.lang.NullPointerException
at
org.apache.tuscany.sca.host.embedded.SCADomain.createNewInstance(SCADomain.java:276)
at
org.apache.tuscany.sca.host.embedded.SCADomain.newInstance(SCADomain.java:70)
at
org.apache.tuscany.sca.itest.DatabindingTestCase.setUp(DatabindingTestCase.java:39)
at junit.framework.TestCase.runBare(TestCase.java:132)
at junit.framework.TestResult$1.protect(TestResult.java:110)
at junit.framework.TestResult.runProtected(TestResult.java:128)
at junit.framework.TestResult.run(TestResult.java:113)
at junit.framework.TestCase.run(TestCase.java:124)
at junit.framework.TestSuite.runTest(TestSuite.java:232)
at junit.framework.TestSuite.run(TestSuite.java:227)
at
org.junit.internal.runners.OldTestClassRunner.run(OldTestClassRunner.java:35)
at
org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:38)
at
org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:460)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:673)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:386)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)
Caused by: org.osoa.sca.ServiceRuntimeException:
org.apache.tuscany.sca.core.assembly.ActivationException:
java.lang.NullPointerException
at
org.apache.tuscany.sca.host.embedded.impl.DefaultSCADomain.init(DefaultSCADomain.java:239)
at
org.apache.tuscany.sca.host.embedded.impl.DefaultSCADomain.<init>(DefaultSCADomain.java:113)
at
org.apache.tuscany.sca.host.embedded.SCADomain.createNewInstance(SCADomain.java:242)
... 16 more
Caused by: org.apache.tuscany.sca.core.assembly.ActivationException:
java.lang.NullPointerException
at
org.apache.tuscany.sca.core.assembly.CompositeActivatorImpl.activate(CompositeActivatorImpl.java:986)
at
org.apache.tuscany.sca.host.embedded.impl.DefaultSCADomain.init(DefaultSCADomain.java:237)
... 18 more
Caused by: java.lang.NullPointerException
at
org.apache.tuscany.sca.interfacedef.wsdl.impl.WSDLOperationIntrospectorImpl.getOperation(WSDLOperationIntrospectorImpl.java:212)
at
org.apache.tuscany.sca.interfacedef.wsdl.java2wsdl.Java2WSDLHelper.createWSDLInterfaceContract(Java2WSDLHelper.java:246)
at
org.apache.tuscany.sca.binding.ws.axis2.Axis2ReferenceBindingProvider.<init>(Axis2ReferenceBindingProvider.java:56)
at
org.apache.tuscany.sca.binding.ws.axis2.Axis2BindingProviderFactory.createReferenceBindingProvider(Axis2BindingProviderFactory.java:66)
at
org.apache.tuscany.sca.binding.ws.axis2.Axis2BindingProviderFactory.createReferenceBindingProvider(Axis2BindingProviderFactory.java:46)
at
org.apache.tuscany.sca.provider.DefaultProviderFactoryExtensionPoint$LazyBindingProviderFactory.createReferenceBindingProvider(DefaultProviderFactoryExtensionPoint.java:230)
at
org.apache.tuscany.sca.core.assembly.CompositeActivatorImpl.addReferenceBindingProvider(CompositeActivatorImpl.java:262)
at
org.apache.tuscany.sca.core.assembly.CompositeActivatorImpl.activate(CompositeActivatorImpl.java:142)
at
org.apache.tuscany.sca.core.assembly.CompositeActivatorImpl.activate(CompositeActivatorImpl.java:982)
... 19 more
>
> I don't think it's wise to try to cover other variations before we get it
> clarified by the spec.
>
> Thanks,
> Raymond
> --------------------------------------------------
> From: "Vamsavardhana Reddy" <c1...@gmail.com>
> Sent: Friday, May 23, 2008 10:42 AM
> To: <tu...@ws.apache.org>
> Subject: TransformationException when using java interface definition with
> generics
>
>
> Can someone point to me what I am doing wrong or if it is a problem in
>> Tuscany? Details follow...
>>
>> I have the following service interface:
>> @Remotable
>> public interface HelloService<E> {
>> public E getGreetings(E name);
>> }
>> --------
>> The following is the service implementation:
>> @Service(HelloService.class)
>> public class HelloServiceImpl implements HelloService<String> {
>>
>> public String getGreetings(String name) {
>> return "Hello "+name;
>> }
>> }
>> --------
>> The following is the client interface that invokes the service:
>> public interface HelloServiceClient<E> {
>> E getGreetingsForward(E name);
>> }
>> --------
>> The following is the client implementation:
>> @Service(HelloServiceClient.class)
>> public class HelloServiceClientImpl implements HelloServiceClient<String>
>> {
>>
>> private HelloService<String> service;
>>
>> @Reference
>> public void setHelloService(HelloService<String> service) {
>> this.service = service;
>> }
>>
>> public String getGreetingsForward(String name) {
>> return service.getGreetings(name);
>> }
>> }
>> --------
>> I have a HelloService component and two HelloServiceClient components in
>> my
>> composite (given below):
>> <composite xmlns="http://www.osoa.org/xmlns/sca/1.0"
>> xmlns:wsdli="http://www.w3.org/2006/01/wsdl-instance"
>> name="HelloService">
>>
>> <!-- Clients to test the service -->
>> <component name="HelloServiceClientWSComponent">
>> <implementation.java
>> class="org.apache.tuscany.sca.itest.impl.HelloServiceClientImpl" />
>> <reference name="helloService">
>> <interface.java
>> interface="org.apache.tuscany.sca.itest.HelloService"/>
>> <binding.ws uri="http://localhost:8080/hs-ep1"/>
>> </reference>
>> </component>
>> <component name="HelloServiceClientSCAComponent">
>> <implementation.java
>> class="org.apache.tuscany.sca.itest.impl.HelloServiceClientImpl" />
>> <reference name="helloService" target="HelloServiceComponent">
>> <binding.sca/>
>> </reference>
>> </component>
>>
>> <!-- Components used to implement the services -->
>> <component name="HelloServiceComponent">
>> <implementation.java
>> class="org.apache.tuscany.sca.itest.impl.HelloServiceImpl"/>
>> <service name="HelloService">
>> <interface.java
>> interface="org.apache.tuscany.sca.itest.HelloService"/>
>> <binding.ws uri="http://localhost:8080/hs-ep1"/>
>> <binding.sca/>
>> </service>
>> </component>
>> </composite>
>> --------
>> The following is the code I am using to invoke the service via client
>> components:
>> domain = SCADomain.newInstance("hello.composite");
>> String name = "Me <String> SCA";
>> HelloServiceClient<String> helloServiceClient =
>> domain.getService(HelloServiceClient.class,
>> "HelloServiceClientSCAComponent");
>> String resp = helloServiceClient.getGreetingsForward(name);
>> System.out.println(resp);
>>
>> name = "Me <String> WS";
>> helloServiceClient = domain.getService(HelloServiceClient.class,
>> "HelloServiceClientWSComponent");
>> resp = helloServiceClient.getGreetingsForward(name);
>> System.out.println(resp);
>> --------
>>
>> It works fine when I invoke the service using the client component that
>> uses
>> SCA binding to connect to the service. I get the following exception when
>> I
>> use the client component that uses WS binding.
>>
>> May 23, 2008 11:04:50 PM
>>
>> org.apache.tuscany.sca.binding.ws.axis2.Axis2ServiceInOutSyncMessageReceiver
>> invokeBusinessLogic
>> SEVERE: org.apache.tuscany.sca.databinding.TransformationException: No
>> path
>> found for the transformation: org.apache.axiom.om.OMElement->null
>> org.osoa.sca.ServiceRuntimeException:
>> org.apache.tuscany.sca.databinding.TransformationException: No path found
>> for the transformation: org.apache.axiom.om.OMElement->null
>> at
>>
>> org.apache.tuscany.sca.core.invocation.RuntimeWireInvoker.invoke(RuntimeWireInvoker.java:119)
>> at
>>
>> org.apache.tuscany.sca.core.invocation.RuntimeWireInvoker.invoke(RuntimeWireInvoker.java:85)
>> at
>>
>> org.apache.tuscany.sca.core.invocation.RuntimeWireInvoker.invoke(RuntimeWireInvoker.java:79)
>> at
>>
>> org.apache.tuscany.sca.core.assembly.RuntimeWireImpl.invoke(RuntimeWireImpl.java:138)
>> at
>>
>> org.apache.tuscany.sca.binding.ws.axis2.Axis2ServiceProvider.invokeTarget(Axis2ServiceProvider.java:669)
>> at
>>
>> org.apache.tuscany.sca.binding.ws.axis2.Axis2ServiceInOutSyncMessageReceiver.invokeBusinessLogic(Axis2ServiceInOutSyncMessageReceiver.java:68)
>> at
>>
>> org.apache.axis2.receivers.AbstractInOutSyncMessageReceiver.invokeBusinessLogic(AbstractInOutSyncMessageReceiver.java:42)
>> at
>>
>> org.apache.axis2.receivers.AbstractMessageReceiver.receive(AbstractMessageReceiver.java:96)
>> at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:145)
>> at
>>
>> org.apache.axis2.transport.http.HTTPTransportUtils.processHTTPPostRequest(HTTPTransportUtils.java:275)
>> at
>> org.apache.axis2.transport.http.AxisServlet.doPost(AxisServlet.java:120)
>> at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
>> at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
>> at
>> org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487)
>> at
>> org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:362)
>> at
>> org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
>> at
>> org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:726)
>> at
>> org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:139)
>> at org.mortbay.jetty.Server.handle(Server.java:324)
>> at
>> org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:505)
>> at
>>
>> org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:842)
>> at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:648)
>> at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211)
>> at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:380)
>> at
>>
>> org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:395)
>> at org.apache.tuscany.sca.core.work.Jsr237Work.run(Jsr237Work.java:63)
>> at
>>
>> org.apache.tuscany.sca.core.work.ThreadPoolWorkManager$DecoratingWork.run(ThreadPoolWorkManager.java:221)
>> at
>>
>> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:650)
>> at
>>
>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:675)
>> at java.lang.Thread.run(Thread.java:595)
>> Caused by: org.apache.tuscany.sca.databinding.TransformationException: No
>> path found for the transformation: org.apache.axiom.om.OMElement->null
>> at
>>
>> org.apache.tuscany.sca.databinding.impl.MediatorImpl.getTransformerChain(MediatorImpl.java:162)
>> at
>>
>> org.apache.tuscany.sca.databinding.impl.MediatorImpl.mediate(MediatorImpl.java:67)
>> at
>>
>> org.apache.tuscany.sca.core.databinding.transformers.Input2InputTransformer.transform(Input2InputTransformer.java:181)
>> at
>>
>> org.apache.tuscany.sca.core.databinding.transformers.Input2InputTransformer.transform(Input2InputTransformer.java:45)
>> at
>>
>> org.apache.tuscany.sca.databinding.impl.MediatorImpl.mediate(MediatorImpl.java:79)
>> at
>>
>> org.apache.tuscany.sca.core.databinding.wire.DataTransformationInterceptor.transform(DataTransformationInterceptor.java:186)
>> at
>>
>> org.apache.tuscany.sca.core.databinding.wire.DataTransformationInterceptor.invoke(DataTransformationInterceptor.java:76)
>> at
>>
>> org.apache.tuscany.sca.core.invocation.RuntimeWireInvoker.invoke(RuntimeWireInvoker.java:110)
>> ... 29 more
>>
>>
Re: TransformationException when using java interface definition with generics
Posted by Raymond Feng <en...@gmail.com>.
Hi,
It's not clear from the SCA spec how generics impacts the interface mapping.
We need some clarifications there.
The JAXWS 2.1 spec uses the erased type and only honor the type argument in
Collection. At this moment, Tuscany supports the following case:
@Remotable
public interface MyHelloService extends HelloService<String> {
}
And use MyHelloService as the service interface for HelloServiceImpl.
I don't think it's wise to try to cover other variations before we get it
clarified by the spec.
Thanks,
Raymond
--------------------------------------------------
From: "Vamsavardhana Reddy" <c1...@gmail.com>
Sent: Friday, May 23, 2008 10:42 AM
To: <tu...@ws.apache.org>
Subject: TransformationException when using java interface definition with
generics
> Can someone point to me what I am doing wrong or if it is a problem in
> Tuscany? Details follow...
>
> I have the following service interface:
> @Remotable
> public interface HelloService<E> {
> public E getGreetings(E name);
> }
> --------
> The following is the service implementation:
> @Service(HelloService.class)
> public class HelloServiceImpl implements HelloService<String> {
>
> public String getGreetings(String name) {
> return "Hello "+name;
> }
> }
> --------
> The following is the client interface that invokes the service:
> public interface HelloServiceClient<E> {
> E getGreetingsForward(E name);
> }
> --------
> The following is the client implementation:
> @Service(HelloServiceClient.class)
> public class HelloServiceClientImpl implements HelloServiceClient<String>
> {
>
> private HelloService<String> service;
>
> @Reference
> public void setHelloService(HelloService<String> service) {
> this.service = service;
> }
>
> public String getGreetingsForward(String name) {
> return service.getGreetings(name);
> }
> }
> --------
> I have a HelloService component and two HelloServiceClient components in
> my
> composite (given below):
> <composite xmlns="http://www.osoa.org/xmlns/sca/1.0"
> xmlns:wsdli="http://www.w3.org/2006/01/wsdl-instance"
> name="HelloService">
>
> <!-- Clients to test the service -->
> <component name="HelloServiceClientWSComponent">
> <implementation.java
> class="org.apache.tuscany.sca.itest.impl.HelloServiceClientImpl" />
> <reference name="helloService">
> <interface.java
> interface="org.apache.tuscany.sca.itest.HelloService"/>
> <binding.ws uri="http://localhost:8080/hs-ep1"/>
> </reference>
> </component>
> <component name="HelloServiceClientSCAComponent">
> <implementation.java
> class="org.apache.tuscany.sca.itest.impl.HelloServiceClientImpl" />
> <reference name="helloService" target="HelloServiceComponent">
> <binding.sca/>
> </reference>
> </component>
>
> <!-- Components used to implement the services -->
> <component name="HelloServiceComponent">
> <implementation.java
> class="org.apache.tuscany.sca.itest.impl.HelloServiceImpl"/>
> <service name="HelloService">
> <interface.java
> interface="org.apache.tuscany.sca.itest.HelloService"/>
> <binding.ws uri="http://localhost:8080/hs-ep1"/>
> <binding.sca/>
> </service>
> </component>
> </composite>
> --------
> The following is the code I am using to invoke the service via client
> components:
> domain = SCADomain.newInstance("hello.composite");
> String name = "Me <String> SCA";
> HelloServiceClient<String> helloServiceClient =
> domain.getService(HelloServiceClient.class,
> "HelloServiceClientSCAComponent");
> String resp = helloServiceClient.getGreetingsForward(name);
> System.out.println(resp);
>
> name = "Me <String> WS";
> helloServiceClient = domain.getService(HelloServiceClient.class,
> "HelloServiceClientWSComponent");
> resp = helloServiceClient.getGreetingsForward(name);
> System.out.println(resp);
> --------
>
> It works fine when I invoke the service using the client component that
> uses
> SCA binding to connect to the service. I get the following exception when
> I
> use the client component that uses WS binding.
>
> May 23, 2008 11:04:50 PM
> org.apache.tuscany.sca.binding.ws.axis2.Axis2ServiceInOutSyncMessageReceiver
> invokeBusinessLogic
> SEVERE: org.apache.tuscany.sca.databinding.TransformationException: No
> path
> found for the transformation: org.apache.axiom.om.OMElement->null
> org.osoa.sca.ServiceRuntimeException:
> org.apache.tuscany.sca.databinding.TransformationException: No path found
> for the transformation: org.apache.axiom.om.OMElement->null
> at
> org.apache.tuscany.sca.core.invocation.RuntimeWireInvoker.invoke(RuntimeWireInvoker.java:119)
> at
> org.apache.tuscany.sca.core.invocation.RuntimeWireInvoker.invoke(RuntimeWireInvoker.java:85)
> at
> org.apache.tuscany.sca.core.invocation.RuntimeWireInvoker.invoke(RuntimeWireInvoker.java:79)
> at
> org.apache.tuscany.sca.core.assembly.RuntimeWireImpl.invoke(RuntimeWireImpl.java:138)
> at
> org.apache.tuscany.sca.binding.ws.axis2.Axis2ServiceProvider.invokeTarget(Axis2ServiceProvider.java:669)
> at
> org.apache.tuscany.sca.binding.ws.axis2.Axis2ServiceInOutSyncMessageReceiver.invokeBusinessLogic(Axis2ServiceInOutSyncMessageReceiver.java:68)
> at
> org.apache.axis2.receivers.AbstractInOutSyncMessageReceiver.invokeBusinessLogic(AbstractInOutSyncMessageReceiver.java:42)
> at
> org.apache.axis2.receivers.AbstractMessageReceiver.receive(AbstractMessageReceiver.java:96)
> at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:145)
> at
> org.apache.axis2.transport.http.HTTPTransportUtils.processHTTPPostRequest(HTTPTransportUtils.java:275)
> at
> org.apache.axis2.transport.http.AxisServlet.doPost(AxisServlet.java:120)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
> at
> org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487)
> at
> org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:362)
> at
> org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
> at
> org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:726)
> at
> org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:139)
> at org.mortbay.jetty.Server.handle(Server.java:324)
> at
> org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:505)
> at
> org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:842)
> at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:648)
> at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211)
> at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:380)
> at
> org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:395)
> at org.apache.tuscany.sca.core.work.Jsr237Work.run(Jsr237Work.java:63)
> at
> org.apache.tuscany.sca.core.work.ThreadPoolWorkManager$DecoratingWork.run(ThreadPoolWorkManager.java:221)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:650)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:675)
> at java.lang.Thread.run(Thread.java:595)
> Caused by: org.apache.tuscany.sca.databinding.TransformationException: No
> path found for the transformation: org.apache.axiom.om.OMElement->null
> at
> org.apache.tuscany.sca.databinding.impl.MediatorImpl.getTransformerChain(MediatorImpl.java:162)
> at
> org.apache.tuscany.sca.databinding.impl.MediatorImpl.mediate(MediatorImpl.java:67)
> at
> org.apache.tuscany.sca.core.databinding.transformers.Input2InputTransformer.transform(Input2InputTransformer.java:181)
> at
> org.apache.tuscany.sca.core.databinding.transformers.Input2InputTransformer.transform(Input2InputTransformer.java:45)
> at
> org.apache.tuscany.sca.databinding.impl.MediatorImpl.mediate(MediatorImpl.java:79)
> at
> org.apache.tuscany.sca.core.databinding.wire.DataTransformationInterceptor.transform(DataTransformationInterceptor.java:186)
> at
> org.apache.tuscany.sca.core.databinding.wire.DataTransformationInterceptor.invoke(DataTransformationInterceptor.java:76)
> at
> org.apache.tuscany.sca.core.invocation.RuntimeWireInvoker.invoke(RuntimeWireInvoker.java:110)
> ... 29 more
>