Hi, Alexander Klimetschek schrieb: > On Tue, Jun 16, 2009 at 8:02 AM, Felix Meschberger<fmesc...@gmail.com> wrote: >> (1) The most basic criterion for the system to be ready is the available >> of certain services. > > Yes, services is probably enough. The availability of bundles doesn't > actually help for readyness detection, it's their services that are > important. > >> (2) There must be away to specify which services are required. >> >> >> Now, this is very simple and easy: As Alex Klimetschek proposes we are >> using ConfigurationAdmin for this. Each service can be described by a >> few properties: >> >> (a) Service Name >> (b) Service Filter >> (c) Number of services >> >> The configuration of required services is a multivalued string property >> of the format >> >> [ number ] ( serviceName | serviceFilter ) >> >> where >> >> number is an optional positive number of required services >> serviceName is the name of a service interface >> serviceFilter is a service filter according to 3.2.6, Filter Syntax > > +1 for Filter syntax > > Just to be sure: we can also define service implementations by > filters, right? Eg. for the scripting case, we want to be able to say, > we need the "jsp" and the "esp" scripting engines available, and not > just 2 services implementing the scripting engine service interface.
you might define two entries: &((OBJECT_CLASS=javax.jcr.ScriptEngineFactory)(extension=jsp)) &((OBJECT_CLASS=javax.jcr.ScriptEngineFactory)(extension=esp)) Regards Felix > > Regards, > Alex >
