Hi,
It works like a charm by using a Dictionary (instead of a Map). Sorry for
that, I should have seen this :)
Thanks a lot !
Regards
LP
On Fri, Jun 18, 2010 at 5:57 PM, Clement Escoffier <
clement.escoff...@gmail.com> wrote:
> Hi,
>
> On 18.06.2010, at 17:02, Loic Petit wrote:
>
> > Hi everyone,
> >
> > I want to know if there is a "clean" way to do this thing.
> >
> > I've got a class with the following form:
> >
> > @Component
> > @Provides
> > class A {
> > @Requires
> > private B[] b;
> > }
> >
> > This component is then created by the iPojo API via its factory.
> > What I would like to do: give a ldap filter on the creation of the
> instance
> > in order to have the array that matches the filter.
> >
> > It is possible to do that offline by giving a filter in the annotation,
> but
> > it is impossible to have a dynamic one.
> >
> > As an example, I use felix/ipojo to manipulate UPnPDevice. I have a
> generic
> > component that operate on all the devices that matches the ID given by
> the
> > property. Here is how I could do it.
> >
> > class A {
> > @Requires
> > private UPnPDevice[] devices;
> > @Property
> > private String udn;
> >
> > public void foo() {
> > for all devices that matches the udn {
> > bar();
> > }
> > }
> > }
> >
> > But this is a bit silly as I subscribe for all kinds of devices and then
> I
> > do manually the filter while it is possible to subscribe to the context
> that
> > I want only that filter. The second way, of course, is to ignore iPojo
> and
> > subscribe on my own with a custom filter and also manage the list.
> >
> > It's not the first time I encounter this problem and iPojo has all the
> tools
> > to do such thing. Do you know a "clean" way to do it ?
>
> Each instance declaration can customize the dependency filters.
> Let's imagine a component:
> @Component
> @Provides
> class A {
> @Requires(id="B") // I give a name to this dependency
> private B[] b;
> }
>
> Then, in the instance declaration, you can set / override the dependency
> filter:
> <instance component="...A">
> <property name="requires.filters"> <!-- special property to customize
> the filters -->
> <property name="B" value="(your_filter)"/> <!-- the filter here -->
> </property>
> </instance>
>
> (More details on
> http://felix.apache.org/site/service-requirement-handler.html#ServiceRequirementHandler-FilteredRequirement
> )
>
> Unfortunately, this mechanism is only possible if you declare the instance
> using the XML formalism or the iPOJO Factory service (API). Indeed, the
> config admin does not support maps (requires.filters is a map).
>
> Regards,
>
> Clement
>
>
> >
> > LP
>
>
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