I'm creating a dynamic processing component using iPOJO and Camel. The idea
is to dynamically specify (via config admin) a number of processor id's. In
runtime I want to find the matching processors (the processors are Camel
processors published as OSGi services) with the correct id.
E g if I specify a list of services to {A,B} (FileInstall recognizes this
as a list). I want to require those services in order for my iPojo instance
to become valid. It was much harder than I thought.
I've tried something like:
@Property(name = "processors", mandatory = false, value = "")
public void setProcessors(String[] theProcessorIds) {
mProcessorIds = theProcessorIds;
updateProcessorFilter();
}
@Requires
private Processor[] mProcessors;
The idea is that whenever the configuration property "processors" is
updated, I dynamically update the ldap filter on the dependency
mProcessors. I've used this approach before and it has worked when using a
single dependency (not an array).
The problem is that I want to specifically require each specified
processor. In the example above, I require one processor with id=A AND one
processor with id=B. It's not enough with anyone of them since I want to
invoke them one after another.
Can I use a filter for this? I've been thinking of something like this:
(|(processorId=A)(processorId=B))
This would match both my processors but if one of them were missing my
instance would still become valid which I don't want.
/Bengt
