Hi Michael, all
Michael Gebhart a écrit :
Hi,
when using the SCA editor to create my service architecture, I can
easily implement services. I can write a java class and set it as the
implementation of a component.
Yes, it is easy to design composites and write implementations for
components with SCA editor.
My question is: Can I only use this implementation within a SCA
runtime? We have a typical application server running and don't wanna
provide a SCA runtime. But we'd like to use SCA for modeling the
architecture.
I think that the implementation you wrote does not depend on SCA
runtime, it only depends on SCA annotations (@Reference,
@Property...), but those annotation don't change your class logic,
thus you can use your classes out of SCA context (but you'll have to
provide the jar containing SCA references to resolve annotations).
But the question that comes to me ie "why don't you use a SCA
runtime?". I understand that there may be conflicts because with some
applications server, but it is worse trying...
Or do we have to manually adapt the implementation that it works
within a typical WS-compliant java application server?
I can't help you on this topic.
Is the SCA way an alternative for the usual web service programming?
Is it still necessary to write the web services as we have done it
before? (Using JAX-WS etc.)
SCA is an alternative for generic (Java-friendly) service programming.
I often use it to expose WebServices simply by creating a java
component that exposes its service through a binding.ws, and it works
quite well without brainstorming:
<composite ...>
<component name="myComponent">
<implementation.java class="package.ServiceImpl" />
<service name="myService">
<interface.java interface="package.IService" />
<binding.ws uri="http://localhost:8081/endpoint"; />
</service>
</component>
</composite>
Then, you have a web service published on localhost:8081/endpoint, and
your SCA runtime made everything necessary to get it working, you
simply wrote the composite, the interface, and the implementation
(only business code)
Greetings
Michael
Regards,
Mickael