[rules-users] Drools 5.0 concat string in matches of regular expression
Edson Tirelli
ed.tirelli at gmail.com
Fri Jan 15 15:18:37 EST 2010
Mike fixed the problem. You can either take an MVEL snapshot or wait for
the release of 2.0.16, update the jar and your should be fine.
Edson
2010/1/15 Edson Tirelli <ed.tirelli at gmail.com>
>
> 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
>
--
Edson Tirelli
JBoss Drools Core Development
JBoss by Red Hat @ www.jboss.com
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