Hi, Are you trying to modify your own filter ? May lead to fun cases :-)
In that case: InstanceManager me = (InstanceManager) ((Pojo) this).getComponentInstance(); Explanations: - each iPOJO instance is implementing a org.apache.felix.ipojo.Pojo interface - so implements the getComponentInstance method returning a ComponentInstance - you cast the ComponentInstance to InstanceManager and you're back on track Regards, Clement On 28 nov. 2012, at 14:19, Bengt Rodehav <[email protected]> wrote: > Sorry for bothering you again.... > > I use iPOJO annotations like this: > > * @Component(name = "componentName", propagation = true, immediate = true)* > * @Provides* > * public class MyClass {* > > > I tried the following cast: > > * InstanceManager im = (InstanceManager) this;* > > where "this" is an instance of MyClass. The cast doesn't work since > MyClass is not a sub class of InstanceManager. How do I get hold of a > component instance? > > /Bengt > > > > > 2012/11/28 Bengt Rodehav <[email protected]> > >> Thanks a lot, will try this approach. >> >> /Bengt >> >> >> 2012/11/28 Clement Escoffier <[email protected]> >> >>> Hi, >>> >>> The DependencyModel is the parent class of all the iPOJO's service >>> dependencies. So, the easiest way is to access to your service dependency: >>> >>> InstanceManager im = (InstanceManager) componentInstance; >>> DependencyHandler handler = >>> im.getHandler("org.apache.felix.ipojo:requires"); >>> Dependencies[] deps = handler.getDependencies(); >>> // Lookup your dependency from deps (by id, by specification…) >>> dep.setFilter(filter); >>> >>> Regards, >>> >>> Clement >>> >>> >>> >>> >>> On 28 nov. 2012, at 13:09, Bengt Rodehav <[email protected]> wrote: >>> >>>> Thanks for you reply Clement, >>>> >>>> So, the following should work (in principal)? >>>> >>>> * @Property(name = "myProperty" mandatory = true)* >>>> * public void setMyPropertey(String theProperty) {* >>>> * // Calculate new filter based on myProperty* >>>> * String filter = ....* >>>> * >>>> * >>>> * // How do I get an instance of "DependencyModel"?* >>>> * DependencyModel.setFilter(filter);* >>>> * }* >>>> >>>> I've never used the DependencyModel class before. How do I gain access >>> to >>>> the correct instance? What maven artifact do I need for this? >>>> >>>> /Bengt >>>> >>>> >>>> 2012/11/28 Clement Escoffier <[email protected]> >>>> >>>>> Hi, >>>>> >>>>> Using the iPOJO API you can use 'setFilter' to update the LDAP filter >>> of a >>>>> dependency (DependencyModel.setFilter). When changed the set of bound >>>>> services is recomputed. Be aware that it may lead to an invalidation >>> of the >>>>> instance if no providers match the new filter. >>>>> >>>>> What we did in the past is to develop a handler receiving the new >>>>> properties, computing the new filter and applying it to the targeted >>>>> dependency. >>>>> >>>>> Regards, >>>>> >>>>> Clement >>>>> >>>>> On 27 nov. 2012, at 11:41, Bengt Rodehav <[email protected]> wrote: >>>>> >>>>>> I'm using the latest iPOJO version. I'm trying to use configuration >>>>>> properties (via config admin) to make my service wiring dynamic. >>>>>> >>>>>> I have handler services that expose service properties (that tells the >>>>>> world what they can handle). The consumer of these services uses >>> @Require >>>>>> with an LDAP filter to specify what needs to be handled and thus limit >>>>> what >>>>>> handlers can be used. >>>>>> >>>>>> But, I want the LDAP filter to be dynamic so that I can wire up >>> service >>>>>> providers with service consumers by configuration properties on the >>>>>> consumers and providers. >>>>>> >>>>>> I've tried to buld the LDAP filter dynamically (using a configurable >>>>>> property) but I get the compilation error: >>>>>> >>>>>> * The value for annotation attribute Requires.filter must be a >>> constant >>>>>> expression* >>>>>> >>>>>> I was hoping that if I changed a configuration property, iPOJO would >>>>>> refresh its list of provider services to match the changed LDAP >>> filter. >>>>>> >>>>>> How can I accomplish what I want? Is there a best practice? >>>>>> >>>>>> /Bengt >>>>> >>>>> >>>>> --------------------------------------------------------------------- >>>>> To unsubscribe, e-mail: [email protected] >>>>> For additional commands, e-mail: [email protected] >>>>> >>>>> >>> >>> >>> --------------------------------------------------------------------- >>> To unsubscribe, e-mail: [email protected] >>> For additional commands, e-mail: [email protected] >>> >>> >> --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
