Jean-Sebastien Delfino wrote:
Jean-Sebastien Delfino wrote:
Jean-Sebastien Delfino wrote:
I've committed a new sample [1] to help people understand how to
extend Tuscany 2.x with a new component implementation type.
The sample extends Tuscany with a fictitious component implementation
and shows how to:
- read/write SCDL and resolve WSDL and Java in an ArtifactProcessor;
- manage the lifecycle of a component in an ImplementationProvider;
- support both WSDL and Java interfaces;
- flow component invocations through Invokers and Proxies;
- represent data using Java and DOM data bindings;
- run components in a Junit test case.
I'm still working on it and will try to document these aspects in the
sample README. I'm also going to add a test case or two showing how
to code the construction of a SCDL in-memory model and run off of it.
I've improved the sample a bit and added code that shows how to:
1) create contribution and SCDL composite models programmatically;
2) register a ProviderFactory instance (as it may be more convenient
than having it loaded and instantiated by the runtime, if for example
you want to pass something to it);
3) bootstrap and run a Tuscany Node out of that.
For (3) I had to add a new NodeFactory.createNode() method taking a
list of pre-built contribution models, matching the existing NodeImpl(
NodeFactoryImpl manager, NodeConfiguration configuration, List<
Contribution> contributions) constructor.
Next step, I'm going to add Web service bindings to the sample, to show
how that works, and how multiple databindings can be used in an app (DOM
in the component impl, and AXIOM with Axis2).
Done in SVN revision r992153. I've added a component with a service and
reference configured with <binding.ws> to test.composite [2], and a test
case that communicates with it over SOAP [3].
As a side comment, the test case shows how easy it is to call and
implement a simple SOAP Web Service with barebones java.net.Socket and
javax.servlet.http.HttpServlet :)
Quick question: if I need multiple databindings on an interface, do I
need to clone that interface model in my SCDL processor (one per
databinding), or can multiple databindings co-exist on the same instance?
After digging through the data binding code, looks like the answer is
that the interface must be cloned. I adjusted the sample SCDL processor
to do that.
Hope this helps.
[1]
http://svn.apache.org/repos/asf/tuscany/sca-java-2.x/trunk/samples/implementation-extension/
[2]
http://svn.apache.org/repos/asf/tuscany/sca-java-2.x/trunk/samples/implementation-extension/src/test/resources/test.composite
[3]
http://svn.apache.org/repos/asf/tuscany/sca-java-2.x/trunk/samples/implementation-extension/src/test/java/sample/impl/RunWSTestCase.java
--
Jean-Sebastien
