Hello,
Consider this interaction scenario in the same tuscany runtime.
SCA component A --> implementation.bpel
SCA component B --> implementation.java with binding.ws
If A invokes B, will it be a local java call? or a webservice
call.
In my understanding, BPEL can manage only webservice interactions.
I would like to know if SCA / tuscany does any extra step to avoid
this marshalling / unmarshalling overhead.
Regards,
Rupesh
Peng Han <[email protected]>
06/01/2009 03:50 PM
Please respond to
[email protected]
To
[email protected]
cc
Subject
Re: how to access another SCA Component in BPEL
Dear Resende:
Thanks a lot for your prompt response.
I changed the binding to jsoncrpc and get the following error:
Exception in thread "main" org.osoa.sca.ServiceRuntimeException:
java.lang.ClassCastException:
org.apache.tuscany.sca.interfacedef.wsdl.impl.WSDLInterfaceImpl cannot
be cast to org.apache.tuscany.sca.interfacedef.java.JavaInterface
at
org.apache.tuscany.sca.host.embedded.SCADomain.createNewInstance(SCADomain.java:220)
at
org.apache.tuscany.sca.host.embedded.SCADomain.newInstance(SCADomain.java:63)
at helloworld.BPELClient.main(BPELClient.java:47)
Caused by: java.lang.ClassCastException:
org.apache.tuscany.sca.interfacedef.wsdl.impl.WSDLInterfaceImpl cannot
be cast to org.apache.tuscany.sca.interfacedef.java.JavaInterface
at
org.apache.tuscany.sca.binding.jsonrpc.provider.JSONRPCServiceBindingProvider.getTargetJavaClass(JSONRPCServiceBindingProvider.java:158)
at
org.apache.tuscany.sca.binding.jsonrpc.provider.JSONRPCServiceBindingProvider.start(JSONRPCServiceBindingProvider.java:91)
at
org.apache.tuscany.sca.core.assembly.CompositeActivatorImpl$3.run(CompositeActivatorImpl.java:630)
at java.security.AccessController.doPrivileged(Native Method)
at
org.apache.tuscany.sca.core.assembly.CompositeActivatorImpl.start(CompositeActivatorImpl.java:628)
at
org.apache.tuscany.sca.core.assembly.CompositeActivatorImpl.start(CompositeActivatorImpl.java:560)
at org.apache.tuscany.sca.node.impl.NodeImpl.start(NodeImpl.java:668)
at
org.apache.tuscany.sca.host.embedded.impl.DefaultSCADomain.init(DefaultSCADomain.java:182)
at
org.apache.tuscany.sca.host.embedded.impl.DefaultSCADomain.<init>(DefaultSCADomain.java:97)
at
org.apache.tuscany.sca.host.embedded.SCADomain.createNewInstance(SCADomain.java:182)
... 2 more
However, if I change the interface of BPEL component service from WS to
Java as follows:
<component name="BPELHelloWorldComponent">
<implementation.bpel process="hns:HelloWorld"/>
<service name="helloPartnerLink">
<interface.java
interface="org.apache.tuscany.implementation.bpel.example.helloworld.HelloPortType"/>
<tuscany:binding.jsonrpc uri="http://localhost:8080/services"/>
</service>
</component>
I will get a "null" return value. The code in javascript is as follows:
//@Reference
var mainRegReference = new Reference( "RegistrationReference" );
var mytext = "Hello again";
document.write(mytext);
function getWeather() {
var city = document.getElementById( "cityField" ).value;
var country = document.getElementById( "countryField" ).value;
var returnString = mainRegReference.hello("weather",
displayWeather);
}
function displayWeather(weather){
document.write(weather);
}
Best Regards
Peng
> On Sat, May 30, 2009 at 12:35 PM, Peng Han <[email protected]> wrote:
>
>> Dear Resende:
>>
>> I tried to access the links you provided but it seems that it was
broken.
>> Would you please check it?
>>
>>
>
>
https://svn.apache.org/repos/asf/tuscany/branches/sca-java-1.x/itest/bpel/helloworld-reference/
>
>
>> Also I would like to ask whether it is possible to consume a service
>> provided by a .bpel implemented component
>> from a component implemented as widget and how. I tried to do it in the
>> following composite but the program
>> seems stuck when invoking the service.
>>
>
> You should be able to do this, using json-rpc binding.
> I responded to your other thread "Wiring a Widget Component and BPEL
> Component" with more details on how to try to accomplish this, but
> feel free to let me know if you are not making progress, and I can try
> to get some examples available.
>
>
>> Thanks a lot!
>>
>> the composite is as follows:
>>
>> <composite xmlns="http://www.osoa.org/xmlns/sca/1.0";
>>
>> xmlns:hns="
http://tuscany.apache.org/implementation/bpel/example/helloworld";
>> xmlns:tuscany="http://tuscany.apache.org/xmlns/sca/1.0";
name="helloworld"
>> targetNamespace="http://bpel";>
>> <component name="BPELHelloWorldComponent">
>> <implementation.bpel process="hns:HelloWorld" />
>> <service name="helloPartnerLink">
>> <interface.wsdl
>>
>> interface="
http://tuscany.apache.org/implementation/bpel/example/helloworld.wsdl#wsdl.interface(HelloPortType)
"
>> />
>> <binding.ws uri="
http://localhost:8080/BPELHelloWorldComponent"; />
>> </service>
>> </component>
>> <component name="RegistrationWidgetComponent">
>> <tuscany:implementation.widget location="Registration.html" />
>> <service name="Widget">
>> <tuscany:binding.http uri="http://localhost:8080/Registration
" />
>> </service>
>> <reference name="RegistrationReference">
>> <interface.wsdl
>>
>> interface="
http://tuscany.apache.org/implementation/bpel/example/helloworld.wsdl#wsdl.interface(HelloPortType)
"
>> />
>> <binding.ws uri="
http://localhost:8080/BPELHelloWorldComponent"; />
>> </reference>
>> </component>
>> <service name="RegistrationService"
>> promote="RegistrationWidgetComponent/Widget" />
>> <wire source="RegistrationWidgetComponent/RegistrationReference"
>> target="BPELHelloWorldComponent/helloPartnerLink" />
>> </composite>
>>
>> Best Regards
>>
>> P.Han
>>
>>> This is demonstrated in the following bpel-reference iTest [1]. In
>>> this case, we have a grretings java component, and then a BPEL
>>> component that have a reference to this service as described in the
>>> composite below.
>>>
>>> <composite xmlns="http://www.osoa.org/xmlns/sca/1.0";
>>> targetNamespace="http://bpel";
>>> xmlns:hns="http://helloworld";
>>> name="helloworld">
>>>
>>> <component name="HelloWorldService">
>>> <implementation.bpel process="hns:HelloWorld"/>
>>> <reference name="greetingsPartnerLink"
>>> target="GreetingsServiceComponent"/>
>>> </component>
>>>
>>> <component name="GreetingsServiceComponent">
>>> <implementation.java class="greetings.GreetingsServiceImpl" />
>>> <service name="GreetingsService">
>>>
>>> <interface.wsdl
>>> interface="http://greetings#wsdl.interface(Greetings)" />
>>> </service>
>>> </component>
>>> </composite>
>>>
>>> Please let me know if you have questions or any problems running the
>>> sample test scenario.
>>>
>>>
>>> [1]
>>>
https://svn.apache.org/repos/asf/tuscany/java/sca/itest/bpel/helloworld-reference/
>>>
>>>
>>> On Thu, Aug 28, 2008 at 8:21 PM, xuhongbo <[email protected]> wrote:
>>>
>>>
>>>> Hi
>>>> Now I am using the sca provided build in bpel engine, and want
to
>>>> invoke another sca-component in the bpel process;
>>>> Though I could deploy the -java-implement sca component as
>>>> web-service by ws binding,then access it in bpel by import a wsdl
>>>> process.
>>>> This way ask for all sca-java-componet deployed as web-service, and
seems
>>>> too trival for deployment.
>>>> So does anyone know how to use a sca-reference in a BPEL
implement
>>>> component to access another sca component? Or some other mechanism
can
>>>> direct access sca-component? Typically sca component invoked by the
bpel
>>>> is
>>>> always implement as Java Language.
>>>>
>>>> Thanks
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>
>>>
>>>
>>
>
>
>
>
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