Hi,
On 25 janvier 2015 at 22:45:46, Thiago Souza ([email protected]) wrote:
Hi!
I could implement a prototype that generates metadata in the component
descriptor.
Now I can create an iPojo that requires component factories with these
metadata. But I'm not being able to find a way to access the pojo instance
itself given a factory, is it possible?
You use the Factory to create a ComponentInstance, then you have two ways:
1) The best way is to retrieve a service exposed by the freshly created
instance. You can use the ‘instance.name’ property to select the service. That
way, you manager ‘invalid’ instance (instances that depends on unavailable
services), as the service won’t be exposed in this case.
try {
ServiceReference[] refs =
context.getServiceReferences(YourServiceInterface.class.getName(),
"(instance.name=" + instance.getInstanceName() +")");
if (refs != null) {
Foo your_object = (Foo) context.getService(refs[0]);
}
} catch (InvalidSyntaxException e) {
// Should not happen
}
2) You can use the following snippet:
if (instance.getState() == ComponentInstance.VALID) {
ImplementationClass object =
(ImplementationClass) ((InstanceManager) instance).getPojoObject();
} else {
System.out.println("Cannot get an implementation object from an invalid
instance");
}
First it requires a cast to InstanceManager. InstanceManager is the
implementation class behind @Component. As iPOJO supports her type of entities,
you need to be sure you are using @Component before casting (others are
Handler, Composite…). Once you have the instance manager you can call the
‘getPojoObject’ to retrieve the pojo instance. If none exist, one is created.
Cheers,
Clement
Regards
On Sun, Jan 25, 2015, 14:15 clement escoffier [via Apache Felix] <
[email protected]> wrote:
> Hi,
>
> Unfortunately stereotypes do not support ‘parameter’ right now, but you
> can use ‘visitors’ which are small classes rewriting the annotation.
> Here is something similar to what you try to do:
> https://github.com/wisdom-framework/wisdom/blob/master/core/wisdom-ipojo-module/src/main/java/org/wisdom/ipojo/module/WisdomServiceVisitor.java
>
>
> Cheers,
>
> Clement
> On 25 janvier 2015 at 16:42:50, Thiago Souza ([hidden email]
> <http:///user/SendEmail.jtp?type=node&node=5011272&i=0>) wrote:
>
> Hi all,
>
> I'm trying to create a custom handler with a @Stereotype annotation (named
>
> @Namespace) with the following use case:
>
> @Namespace("a-namespace")
> public class ANamespaceComponent {
> }
>
> The ANamespaceComponent would also inherit @Component(name="a-namespace")
>
> and @Instantiate with additional processing.
>
> Unfortunatelly I'm not being able to understand, from the documentation,
> what artifacts (and how) should be created.
>
> Any help appreciated!
>
> Thanks!
>
>
>
>
>
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