[rules-users] Drools 5.0 concat string in matches of regular expression
Edson Tirelli
ed.tirelli at gmail.com
Fri Jan 15 10:00:18 EST 2010
Ok, thanks for checking. I just opened a ticket:
http://jira.codehaus.org/browse/MVEL-200
Meanwhile, what I can suggest is a workaround, adding a helper method to
the BlacklistItemDRL that returns the pattern ready for use:
onBlackList : ArrayList( size > 0 ) from collect(
BlacklistItemDRL( blacklistItemType matches "MAIL_DOMAIN",
customer.currentContactInformation.partyEmailAddress.email
matches blacklistItemValuePattern )
from blackList.getItems())
As soon as MVEL is fixed, should be just a matter of updating the jar.
Edson
2010/1/15 Lukas Svoboda <lukasvoboda at googlemail.com>
>
> I tried the latest MVELs 2.0.15 and 2.0.16 and no luck.
>
> The error message says now:
> [java] Unable to determine the used declarations.
> [java] [Error: unexpected symbol ' ']
> [java] [Near : {... s.email ~= ( ".*@" + blacklist ....}]
> [java] ^
> [java] [Line: 1, Column: 61] : [Rule name='BL: Block mail domain']
>
>
>
> Edson Tirelli-4 wrote:
> >
> > The error message you reported means that MVEL could not properly
> parse
> > this expression:
> >
> > ".*@" + blacklistItemValue + ".*"
> >
> > What is obviously strange, but that is what the error message says.
> >
> > Quick try is: download and replace the mvel jar you have (should be
> > mvel
> > version 2.0.10) by the newest one from here (2.0.15):
> >
> > http://mvel.codehaus.org/Downloading+MVEL
> >
> > I did not tested the new mvel for regressions, but you might get
> lucky.
> > Otherwise, please open a jira against Drools adding your test case and we
> > will make sure it gets fixed and updated.
> >
> > Thanks,
> > Edson
> >
> > 2010/1/14 Lukas Svoboda <lukasvoboda at googlemail.com>
> >
> >>
> >> I'm not sure whether mvel version matters for compilation of drools,
> >> anyway
> >> I'm using mvel2.jar distributed in drools5.0.1-binaries.
> >>
> >> I'm more suspicious whether it's related to compiler since it requires
> >> eclipse jdt (I'm using org.eclipse.jdt.core_3.4.2.v_883_R34x.jar) unlike
> >> drools 4.0.7 I was using originally.
> >>
> >> Do I have to setup somehow KnowledgeBuilder by creating custom
> >> KnowledgeBuilderConfiguration.
> >>
> >> I assume default is java dialect with Eclipse compiler. Is it right?
> >>
> >> Lukas
> >>
> >>
> >>
> >> Edson Tirelli-4 wrote:
> >> >
> >> > What version of MVEL are you using?
> >> >
> >> > Edson
> >> >
> >> > 2010/1/13 Lukas Svoboda <lukasvoboda at googlemail.com>
> >> >
> >> >>
> >> >> I'm getting some generic not-anything-saying error message:
> >> >> [java] Unable to determine the used declarations.
> >> >> [java] unexpected symbol ' ' : [Rule name='BL: Block mail
> domain']
> >> >>
> >> >> When I remove that concatenated matches expression (".*@" +
> >> >> blacklistItemValue + ".*") it compiles.
> >> >>
> >> >> Complete rule looks like:
> >> >> rule "BL: Block mail domain" ruleflow-group "black-list"
> >> >> salience 1001
> >> >> when
> >> >> not RejectionResult();
> >> >>
> >> >> customer : CustomerPartyDRL();
> >> >> blackList: BlacklistDRL();
> >> >>
> >> >> onBlackList : ArrayList( size > 0 )
> >> >> from collect( BlacklistItemDRL( blacklistItemType
> >> matches
> >> >> "MAIL_DOMAIN" &&
> >> >> customer.currentContactInformation.partyEmailAddress.email
> >> >> matches blacklistItemValue )
> >> >> from blackList.getItems())
> >> >> then
> >> >> auditLogger.addDeclineRule( "BL: Block mail domain " +
> >> >>
> >> >>
> >> >>
> >>
> customer.getCurrentContactInformation().getPartyEmailAddress().getEmailLowercase());
> >> >>
> >> >> RejectionResult rejection = new OrderRejectionResult(
> >> );
> >> >> rejection.setMessage("BL: Block mail domain " +
> >> >>
> >> >>
> >> >>
> >>
> customer.getCurrentContactInformation().getPartyEmailAddress().getEmailLowercase());
> >> >>
> >> >> insert( rejection );
> >> >>
> >> >> end
> >> >>
> >> >>
> >> >> And fragment of the code I'm using to compile rule package is:
> >> >>
> >> >> Reader testSource = new
> >> >>
> >> >>
> >>
> InputStreamReader(RuleCompiler.class.getResourceAsStream("/perthTestRule.drl"));
> >> >> Reader sourceFlow = new
> >> >>
> >> >>
> >>
> InputStreamReader(RuleCompiler.class.getResourceAsStream("/perthScoreCustomerFlow.rf"));
> >> >>
> >> >> // add the package to a rulebase (deploy the rule
> >> >> package).
> >> >> KnowledgeBase kbase =
> >> >> KnowledgeBaseFactory.newKnowledgeBase();
> >> >> KnowledgeBuilder kbuilder =
> >> >> KnowledgeBuilderFactory.newKnowledgeBuilder();
> >> >>
> >> >>
> >> >> kbuilder.add(ResourceFactory.newReaderResource(testSource),
> >> >> ResourceType.DRL);
> >> >>
> >> >> kbuilder.add(ResourceFactory.newReaderResource(sourceFlow),
> >> >> ResourceType.DRF);
> >> >>
> >> >> System.out.println(kbuilder.getErrors().toString());
> >> >>
> >> >> Collection<KnowledgePackage> pkgs =
> >> >> kbuilder.getKnowledgePackages();
> >> >>
> >> >> try {
> >> >> kbase.addKnowledgePackages(pkgs);
> >> >>
> >> >> StatefulKnowledgeSession ksession =
> >> >> kbase.newStatefulKnowledgeSession();
> >> >>
> >> >> System.out.println("Knowladge session
> >> >> initialized...");
> >> >> } catch (Exception e) {
> >> >> e.printStackTrace();
> >> >> }
> >> >>
> >> >>
> >> >> Edson Tirelli-4 wrote:
> >> >> >
> >> >> > It should work... what error do you see?
> >> >> >
> >> >> > Edson
> >> >> >
> >> >> > 2010/1/13 Lukas Svoboda <lukasvoboda at googlemail.com>
> >> >> >
> >> >> >>
> >> >> >> How can I get drools 5.0.1 compiled if I have regular expression
> >> >> matches
> >> >> >> part
> >> >> >> concat from static text + dynamic string?
> >> >> >>
> >> >> >> See example:
> >> >> >> onBlackList : ArrayList( size > 0 )
> >> >> >> from collect( BlacklistItemDRL( blacklistItemType
> >> >> matches
> >> >> >> "MAIL_DOMAIN" &&
> >> >> >> customer.currentContactInformation.partyEmailAddress.email
> >> >> >> matches (".*@" + blacklistItemValue + ".*") )
> >> >> >> from blackList.getItems())
> >> >> >>
> >> >> >>
> >> >> >> Problem is when I'm trying to do email matches (".*@" +
> >> >> >> blacklistItemValue
> >> >> >> +
> >> >> >> ".*"), which worked in drools 4.0.7 but can't be compiled now in
> >> 5.0.1
> >> >> >>
> >> >> >> Is there any way how to use in matches part of reg exp dynamic
> >> >> property
> >> >> >> value plus static string?
> >> >> >>
> >> >> >> Thanks,
> >> >> >> Lukas
> >> >> >> --
> >> >> >> View this message in context:
> >> >> >>
> >> >>
> >>
> http://n3.nabble.com/Drools-5-0-concat-string-in-matches-of-regular-expression-tp119197p119197.html
> >> >> >> Sent from the Drools - User mailing list archive at Nabble.com.
> >> >> >> _______________________________________________
> >> >> >> rules-users mailing list
> >> >> >> rules-users at 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 at lists.jboss.org
> >> >> > https://lists.jboss.org/mailman/listinfo/rules-users
> >> >> >
> >> >> >
> >> >>
> >> >> --
> >> >> View this message in context:
> >> >>
> >>
> http://n3.nabble.com/Drools-5-0-concat-string-in-matches-of-regular-expression-tp119197p119353.html
> >> >> Sent from the Drools - User mailing list archive at Nabble.com.
> >> >> _______________________________________________
> >> >> rules-users mailing list
> >> >> rules-users at 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 at lists.jboss.org
> >> > https://lists.jboss.org/mailman/listinfo/rules-users
> >> >
> >> >
> >>
> >> --
> >> View this message in context:
> >>
> http://n3.nabble.com/Drools-5-0-concat-string-in-matches-of-regular-expression-tp119197p120451.html
> >> Sent from the Drools - User mailing list archive at Nabble.com.
> >> _______________________________________________
> >> rules-users mailing list
> >> rules-users at 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 at lists.jboss.org
> > https://lists.jboss.org/mailman/listinfo/rules-users
> >
> >
>
> --
> View this message in context:
> http://n3.nabble.com/Drools-5-0-concat-string-in-matches-of-regular-expression-tp119197p121944.html
> Sent from the Drools - User mailing list archive at Nabble.com.
> _______________________________________________
> rules-users mailing list
> rules-users at lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users
>
--
Edson Tirelli
JBoss Drools Core Development
JBoss by Red Hat @ www.jboss.com
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