extend this to any scenario where C) has some possibly logic but that is being extended by a bundle B) which isn't the tracker, that job belongs to an A) who is an extender.
I don't know... maybe B) should not be using A)'s bundleContext in order to register services? - Ray On Wed, Jun 17, 2015 at 3:31 PM, Raymond Auge <raymond.a...@liferay.com> wrote: > Actually Chris is correct in describing the scenario and BJ you are not > correct. > > C) is some bundle which has a header "ImCool: oh so cool!" > B) is an extender which makes servlets from the header "ImCool" IT knows > how to make a Servlet service. > A) is the whiteboard > > > This doesn't work because C) does not import Servlet. > > - Ray > > On Wed, Jun 17, 2015 at 3:24 PM, BJ Hargrave <hargr...@us.ibm.com> wrote: > >> OK. >> >> So A, the whiteboard impl, has ServiceTrackers and must care about the >> specific package. >> >> B is the extends which registers the services. It has no ServiceTrackers >> and does not care about the package since it does not use the package >> itself. >> >> C also must care about the same package as A (so they are type >> compatible). >> >> So there is not bundle which both is the extender and registers the >> services and also has ServiceTrackers which must care about the specific >> package. Therefore trackAllServices=true is not needed. >> >> -- >> >> BJ Hargrave >> Senior Technical Staff Member, IBM // office: +1 386 848 1781 >> OSGi Fellow and CTO of the OSGi Alliance // mobile: +1 386 848 3788 >> hargr...@us.ibm.com >> >> >> >> ----- Original message ----- >> From: Raymond Auge <raymond.a...@liferay.com> >> Sent by: osgi-dev-boun...@mail.osgi.org >> To: OSGi Developer Mail List <osgi-dev@mail.osgi.org> >> Cc: >> Subject: Re: [osgi-dev] whiteboard pattern & extenders >> Date: Wed, Jun 17, 2015 2:55 PM >> >> >> >> On Wed, Jun 17, 2015 at 2:44 PM, BJ Hargrave <hargr...@us.ibm.com> >> wrote: >> >> So this is like DS (an extender) registering Servlet services on behalf >> of a bundle using DS. Then of course the extender bundle does not care >> about the servlet package but also the extender bundle is not using >> ServiceTrackers to track the Servlet services. That is done by the Http >> Whiteboard impl bundle which does care about the servlet package and its >> version. >> >> >> I'm sorry but you've lost me, and DS isn't an example of the scenario >> because the DS bundle is itself tracker in this scenario. >> >> In the scenario I'm describing there are 3 bundles in play: >> >> A) the whiteboard bundle (has the trackers) >> B) an extender which registers services that the whiteboard >> C) a bundle which is being extended by B) but doesn't know anything about >> A) or the API it's being extended with >> >> Sincerely, >> - Ray >> >> >> >> -- >> >> BJ Hargrave >> Senior Technical Staff Member, IBM office: +1 386 848 1781 >> OSGi Fellow and CTO of the OSGi Alliance mobile: +1 386 848 3788 >> hargr...@us.ibm.com >> >> >> >> ----- Original message ----- >> From: Raymond Auge <raymond.a...@liferay.com> >> Sent by: osgi-dev-boun...@mail.osgi.org >> To: OSGi Developer Mail List <osgi-dev@mail.osgi.org> >> Cc: >> Subject: Re: [osgi-dev] whiteboard pattern & extenders >> Date: Wed, Jun 17, 2015 2:23 PM >> >> But an extender who registers services to a whiteboard impl on behalf of >> extendee will result in those services not being visible to the whiteboard >> if the extendee does not import the packages used by the services? >> >> On Wed, Jun 17, 2015 at 2:16 PM, BJ Hargrave <hargr...@us.ibm.com> >> wrote: >> >> Well whiteboard and extenders are different. >> >> Whiteboard should not use true since it cares about the specific API >> package version. >> >> Extenders should use BundleTrackers rather than ServiceTrackers since >> they are not using whiteboard services. >> >> -- >> >> BJ Hargrave >> Senior Technical Staff Member, IBM office: +1 386 848 1781 >> OSGi Fellow and CTO of the OSGi Alliance mobile: +1 386 848 3788 >> hargr...@us.ibm.com >> >> >> >> ----- Original message ----- >> From: Raymond Auge <raymond.a...@liferay.com> >> Sent by: osgi-dev-boun...@mail.osgi.org >> To: OSGi Developer Mail List <osgi-dev@mail.osgi.org> >> Cc: >> Subject: [osgi-dev] whiteboard pattern & extenders >> Date: Wed, Jun 17, 2015 2:12 PM >> >> When implementing a whiteboard pattern should we always open trackers >> using the trackAllServices = true ? via: >> >> ServiceTracker.open(true); >> >> It would seem that this is the only way that we can support extenders >> where the extendee has no knowledge of the APIs in question, correct? >> >> -- >> *Raymond Augé* <http://www.liferay.com/web/raymond.auge/profile> >> (@rotty3000) >> Senior Software Architect *Liferay, Inc.* <http://www.liferay.com> >> (@Liferay) >> Board Member & EEG Co-Chair, OSGi Alliance <http://osgi.org> >> (@OSGiAlliance) >> _______________________________________________ >> OSGi Developer Mail List >> osgi-dev@mail.osgi.org >> https://mail.osgi.org/mailman/listinfo/osgi-dev >> >> >> >> _______________________________________________ >> OSGi Developer Mail List >> osgi-dev@mail.osgi.org >> https://mail.osgi.org/mailman/listinfo/osgi-dev >> >> >> >> >> -- >> *Raymond Augé* <http://www.liferay.com/web/raymond.auge/profile> >> (@rotty3000) >> Senior Software Architect *Liferay, Inc.* <http://www.liferay.com> >> (@Liferay) >> Board Member & EEG Co-Chair, OSGi Alliance <http://osgi.org> >> (@OSGiAlliance) >> _______________________________________________ >> OSGi Developer Mail List >> osgi-dev@mail.osgi.org >> https://mail.osgi.org/mailman/listinfo/osgi-dev >> >> >> >> _______________________________________________ >> OSGi Developer Mail List >> osgi-dev@mail.osgi.org >> https://mail.osgi.org/mailman/listinfo/osgi-dev >> >> >> >> >> -- >> *Raymond Augé* <http://www.liferay.com/web/raymond.auge/profile> >> (@rotty3000) >> Senior Software Architect *Liferay, Inc.* <http://www.liferay.com> >> (@Liferay) >> Board Member & EEG Co-Chair, OSGi Alliance <http://osgi.org> >> (@OSGiAlliance) >> _______________________________________________ >> OSGi Developer Mail List >> osgi-dev@mail.osgi.org >> https://mail.osgi.org/mailman/listinfo/osgi-dev >> >> >> >> _______________________________________________ >> OSGi Developer Mail List >> osgi-dev@mail.osgi.org >> https://mail.osgi.org/mailman/listinfo/osgi-dev >> > > > > -- > *Raymond Augé* <http://www.liferay.com/web/raymond.auge/profile> > (@rotty3000) > Senior Software Architect *Liferay, Inc.* <http://www.liferay.com> > (@Liferay) > Board Member & EEG Co-Chair, OSGi Alliance <http://osgi.org> > (@OSGiAlliance) > -- *Raymond Augé* <http://www.liferay.com/web/raymond.auge/profile> (@rotty3000) Senior Software Architect *Liferay, Inc.* <http://www.liferay.com> (@Liferay) Board Member & EEG Co-Chair, OSGi Alliance <http://osgi.org> (@OSGiAlliance)
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