Re: [rules-users] Drools and Java EE

The changeset itself dictates what resources to monitor, if I understand it properly, so if you're just looking for new packages just add them to the changeset. You probably know that already. See the <addResource> line in KnowledgeBases.xml. But yes, that's all within one KnowledgeBase (I should rename the default name of that changeset file to KnowledgeBase.xml or something like that.). Anyhow, I suspect that it would be useful to allow the resource adapter to create more than one KnowledgeBase. I'm not entirely sure, frankly, how to set that up. I think that since a KnowledgeBase maps to the overly latinate and annoying JCA concept of a (deep breath) user connection factory {eyes glaze over}, that there's probably a way to move the KnowledgeAgent creation code out of the resource adapter bootstrap area and into...into...a better area {handwave, handwave} where several KnowledgeAgents might be able to be built. Short answer: no. :-) Longer answer: yeah, there should be a way to do that. Best, Laird On Thu, Aug 26, 2010 at 4:10 PM, Andrew Waterman-2 [via Drools - Java Rules Engine] <ml-node+1360000-469092184-10124@n3.nabble.com&lt;ml-node%2B1360000-469092184-10124(a)n3.nabble.com&gt; > Just found the configuration in ra.xml: > > <config-property> > <config-property-name>changeSetResourceName</config-property-name> > <config-property-type>java.lang.String</config-property-type> > > <config-property-value>rules/KnowledgeBases.xml</config-property-value> > </config-property> > > Can I get it to support more than one changeSet? It would be nice to pass > a list to monitor. > > best, > > A > > On Aug 26, 2010, at 3:04 PM, Andrew Waterman wrote: > > Hey Laird, > > How do I configure the resource adaptor to load a specific resource? I > have two changesets I would like it to monitor. Is this handled in the > ra.xml? I couldn't seem to find what it was monitoring. :) > > best wishes, > > Andrew > > On Aug 25, 2010, at 4:24 PM, Andrew Waterman wrote: > > Huge thanks! > > best, > > A > > On Aug 25, 2010, at 12:55 PM, ljnelson wrote: > > Have a look at http://code.google.com/p/drools-jca/. > > This is not (clearly) released yet; have a look at the source and see what > you think. > > To build it: check it out, then, with Maven 2.2.1, run mvn clean install > from the root. > > If you have all the right repositories set up in your settings.xml, > everything should complete normally. If you don't, Maven will tell you what > artifacts are missing, and a quick Google search will unveil the > repositories they're hosted in. > > Best, > Laird > > On Wed, Aug 25, 2010 at 1:39 PM, Andrew Waterman-2 [via Drools - Java Rules > Engine] <[hidden email] <#12ab0057a653eef3_>> >> Very useful to the JEE community Laird. I just recently started working >> with the KnowledgeAgent and Drools Guvnor; so I really feel the need. >> Please do let us all know when your implementation is available in the >> trunk and/or a standalone version. :) >> >> best wishes, >> >> Andrew >> >> >> On Aug 24, 2010, at 9:50 PM, ljnelson wrote: >> >> > >> > Hello; I've made a JCA resource adapter for Drools. >> > >> > I've had to hack quite a bit to get it so that the KnowledgeAgent- and >> > resource-scanning-related parts don't use Threads, but, instead, use the >> >> > JCA-supplied WorkManager and BootstrapContext#createTimer() for >> asynchronous >> > operations (like resource scanning and notifying). >> > >> > Here are some changes it would sure be nice to see, that I needed to >> hack >> > around in order to make it so that a KnowledgeAgent-produced >> KnowledgeBase >> > could be shared by Java EE components in a specification compliant >> manner: >> > >> > 1. ResourceChangeNotifierImpl#ProcessChangetSet is an inner class that >> is >> > marked as public static, but which has a package-protected constructor. >> I >> > have to create a new instance of this in order to create a >> > ResourceChangeNotifierImpl subclass that doesn't use threads. I hope >> this >> > constructor could be made public instead. Right now I'm calling >> > setAccessible(true). Yecch. >> > >> > 2. ResourceFactory#setFactoryService(): sure do wish this were public, >> or >> > that there were another way to install a ResourceFactoryService. I need >> to >> > do this so that the scanner and notifier are under my control (and don't >> use >> > Threads, but instead use Timers as provided by the JCA BootstrapContext >> > class). It appears that I do have some control here in Drools 5.1 with >> the >> > (undocumented) ServiceRegistry interface (how do I get an instance of >> it? >> > what does it do? is it used pervasively?), but I don't know, since it's >> > undocumented, whether it's the preferred way to do this sort of thing or >> >> > not. >> > >> > 3. All this indirection is really quite clunky, especially given the >> > META-INF/services facility. Was there a good reason this was not used? >> I'm >> > sure there was something, because having to consult a factory for a >> service >> > to get a provider to produce an instance of something is a bit much. >> > >> > Hacking around those limitations, I was able to produce a Drools >> resource >> > adapter that vends KnowledgeBase instances as its user connection >> factories. >> > This means to use it in a spec-compliant manner, you do this in your >> > stateless (or stateful) session bean: >> > >> > @Resource >> > private KnowledgeBase kb; >> > >> > ...and you get injected a wrapper KnowledgeBase that uses the Java EE >> > container's JCA machinery to invoke operations on the shared >> KnowledgeBase. >> > >> > Is this something that would be interesting to other people? If so I am >> >> > happy to open source it. >> > >> > Thanks for a great toolkit. >> > >> > Best, >> > Laird >> > -- >> > View this message in context: >> http://drools-java-rules-engine.46999.n3.nabble.com/Drools-and-Java-EE-tp... >> >> > Sent from the Drools - User mailing list archive at Nabble.com. >> > _______________________________________________ >> > rules-users mailing list >> > [hidden email] <http://user/SendEmail.jtp?type=node&node=1336588&i=0> >> > https://lists.jboss.org/mailman/listinfo/rules-users >> >> _______________________________________________ >> rules-users mailing list >> [hidden email] <http://user/SendEmail.jtp?type=node&node=1336588&i=1> >> https://lists.jboss.org/mailman/listinfo/rules-users >> >> >> ------------------------------ >> View message @ >> http://drools-java-rules-engine.46999.n3.nabble.com/Drools-and-Java-EE-tp... >> To unsubscribe from Drools and Java EE, click here<http://drools-java-rules-engine.46999.n3.nabble.com/template/TplS...;. >> >> >> > > ------------------------------ > View this message in context: Re: Drools and Java EE<http://drools-java-rules-engine.46999.n3.nabble.com/Drools-and-Java... > Sent from the Drools - User mailing list archive<http://drools-java-rules-engine.46999.n3.nabble.com/Drools-Use... > Nabble.com. > _______________________________________________ > rules-users mailing list > [hidden email] <http://user/SendEmail.jtp?type=node&node=1360000&i=0> > https://lists.jboss.org/mailman/listinfo/rules-users > > > _______________________________________________ > rules-users mailing list > [hidden email] <http://user/SendEmail.jtp?type=node&node=1360000&i=1> > https://lists.jboss.org/mailman/listinfo/rules-users > > > _______________________________________________ > rules-users mailing list > [hidden email] <http://user/SendEmail.jtp?type=node&node=1360000&i=2> > https://lists.jboss.org/mailman/listinfo/rules-users > > > > _______________________________________________ > rules-users mailing list > [hidden email] <http://user/SendEmail.jtp?type=node&node=1360000&i=3> > https://lists.jboss.org/mailman/listinfo/rules-users > > > ------------------------------ > View message @ > http://drools-java-rules-engine.46999.n3.nabble.com/Drools-and-Java-EE-tp... > To unsubscribe from Drools and Java EE, click here<http://drools-java-rules-engine.46999.n3.nabble.com/template/TplS...;. > > > -- View this message in context: http://drools-java-rules-engine.46999.n3.nabble.com/Drools-and-Java-EE-tp... 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