Re: [rules-users] Custom operator

The instantiation is done automatically, based on configuration or API call. More details in here: http://blog.athico.com/2010/06/creating-pluggable-oprators.html But basically, for eclipse to pick it up, best to add to a configuration file: drools.evaluator.MyIdentifierForMyOperators = my.pkg.MyEvaluatorDefinition Please note that all drools operators are implemented like that and wired through configuration file as seen here: https://svn.jboss.org/repos/labs/labs/jbossrules/trunk/drools-compiler/sr... So, adding your own custom operators is no different. Just define your own configuration file in the META-INF directory of your application package and it will work. Edson 2010/10/25 Swindells, Thomas <TSwindells(a)nds.com&gt;: > For that to work the class also needs to be instantiated - ie it would only get created once something in eclipse has touched the class. > > Thomas > > >> -----Original Message----- >> From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users- >> bounces(a)lists.jboss.org] On Behalf Of Edson Tirelli >> Sent: 25 October 2010 14:58 >> To: Rules Users List >> Subject: Re: [rules-users] Custom operator >> >> If you look at the implementation of one of the existing operators >> (e.g. MatchesEvaluatorDefinition) you will see this in the beginning >> of the class: >> >> public static final Operator MATCHES = >> Operator.addOperatorToRegistry( "matches", false ); >> >> Do the same on your own implementations and it should be fine. >> >> Edson >> >> >> >> 2010/10/25 Bruno Freudensprung <bruno.freudensprung(a)temis.com&gt;: >> >>> Hello, >>> >>> It seems that the logic behind the "operator" drop-down list comes from >>> the >>> "org.drools.ide.common.client.modeldriven.SuggestionCompletionEngine" >>> and "org.drools.eclipse.rulebuilder.modeldriven.HumanReadable" classes. >>> That's for the "rule authoring" perspective. >>> I've also seen that the business rule editor involves the DrlParser >>> class. So, in a "rule parsing" perspective, I guess I need to find a way >>> to register my custom operator into the EvaluatorRegistry used by the >>> Eclipse plugin (and I don't know where this can be done). >>> >>> Do you think I am on the right track? Is there a risk that code >>> modifications will involve so many classes that, in the end, adding a >>> custom operator to the business rule editor will be a difficult task for >>> someone very new to Drools (like me)? >>> >>> Thanks in advance, >>> Best regards, >>> >>> Bruno. >>> >>> Bruno Freudensprung a écrit : >>> >>>> Hello, >>>> >>>> I'd like to implement a custom "lucenematches" operator that would >>>> enable writing conditions like: >>>> $d : Doc(text lucenematches "(foo AND bar) OR roam~0.8") >>>> >>>> As I've taken a look at the following post on athico >>>> (http://blog.athico.com/2009/05/imperfect-evaluations.html), and seen >>>> that the appendix B of the "Drools JBoss Rules 5.0 Developer's Guide" >>>> book that deals with custom operators, I am rather confident that I will >>>> find my way in implementing my operator (if not, I'll post here again :-)). >>>> >>>> However, I wonder if it will be possible to add my "lucenematches" >>>> operator to the "operator" drop-down list of the Eclipse's Business Rule >>>> Editor. >>>> Does anyone have an idea? >>>> >>>> Best regards, >>>> >>>> Bruno. >>>> _______________________________________________ >>>> rules-users mailing list >>>> rules-users(a)lists.jboss.org >>>> https://lists.jboss.org/mailman/listinfo/rules-users >>>> >>>> >>>> >>> _______________________________________________ >>> rules-users mailing list >>> rules-users(a)lists.jboss.org >>> https://lists.jboss.org/mailman/listinfo/rules-users >>> >>> >> >> -- >> Edson Tirelli >> JBoss Drools Core Development >> JBoss by Red Hat @ www.jboss.com >> >> _______________________________________________ >> rules-users mailing list >> rules-users(a)lists.jboss.org >> https://lists.jboss.org/mailman/listinfo/rules-users >> > ************************************************************************************** > This message is confidential and intended only for the addressee. If you have received this message in error, please immediately notify the postmaster(a)nds.com and delete it from your system as well as any copies. The content of e-mails as well as traffic data may be monitored by NDS for employment and security purposes. To protect the environment please do not print this e-mail unless necessary. > > NDS Limited. Registered Office: One London Road, Staines, Middlesex, TW18 4EX, United Kingdom. A company registered in England and Wales. Registered no. 3080780. VAT no. GB 603 8808 40-00 > ************************************************************************************** > > _______________________________________________ > rules-users mailing list > rules-users(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users > >