Re: [rules-users] NPE from LHS of rule is not returned by Drools to calling program

Consider these rules: rule kickOff when then Inner square1 = new Inner( "inner", "4", "4" ); Outer namedSquare1 = new Outer( "4x4", square1 ); insert( namedSquare1 ); Inner square2 = new Inner( "inner", "5", "5" ); Outer namedSquare2 = new Outer( "5x5", null /* square2 */ );

Re: [rules-users] how to use not in oparator in guided decision table in 5.2 version of Guvnor ?

Mike, Thanks. I will submit one . - Ram -- View this message in context: http://drools.46999.n3.nabble.com/how-to-use-not-in-oparator-in-guided-decision-table-in-5-2-version-of-Guvnor-tp3865331p3866199.html Sent from the Drools: User forum mailing list archive at Nabble.com. __

Re: [rules-users] In drools what is the exact difference between Insert and Update ??

Dear Bhushan, the recommendations you got from your architect should be intended as best practices, not as strict instructions. Indeed, it depends on what kind of rules you are writing and their business logic. I agree that functions and globals should not be abused, and that salience and groups s

Re: [rules-users] NPE from LHS of rule is not returned by Drools to calling program

I understand that I cannot expect to catch NPE in my calling java program. I am actually catching java.lang.Exception. I simply continued to call it an NPE because that was the true issue. My issue can easily be broadened to apply to any RuntimeException thrown from LHS. -- View this message in

[rules-users] Clarification of how the Persistence Manager works

Hello All I understand that Guvnor uses the PersistenceManager in JackRabbit to persist data but I would like confirmation of how it works. Namely the following. * What actions cause the PersistenceManager to persist data? * When a back end java process connects to the Guvnor server

[rules-users] test

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Re: [rules-users] NPE from LHS of rule is not returned by Drools to calling program

It isn't thrown as a NPE, the trace says java.lang.RuntimeException. -W On 28 March 2012 22:42, scottleff wrote: > No, the NPE is not thrown up to my java class that calls fireAllRules(), > that > is the problem. I'm hoping someone who has lots of experience with > Exception Handing in LHS of D

Re: [rules-users] In drools what is the exact difference between Insert and Update ??

Hi Vincent Legendre Thanks for you valuable reply. We had implemented new technologies in our legacy project one of them is drools(separated our business logic).We had implemented many rules and also used UPDATE in that. But from client (Architect) we got strict instruction that we should not used

Re: [rules-users] NPE from LHS of rule is not returned by Drools to calling program

No, the NPE is not thrown up to my java class that calls fireAllRules(), that is the problem. I'm hoping someone who has lots of experience with Exception Handing in LHS of Drools rules can chime in here and say whether this is the default behavior for Drools. If not, what might be causing the ex

Re: [rules-users] NPE from LHS of rule is not returned by Drools to calling program

But isn't the java.lang.runtimeException thrown up to the point where you call fireAllrules() in your RulesEngine.java at line 318? Just catching NPE is a little dodgy since you can't know what might happen. -W On 28 March 2012 18:35, scottleff wrote: > During development of our Drools rule base

Re: [rules-users] In drools what is the exact difference between Insert and Update ??

Quick summary of : http://docs.jboss.org/drools/release/5.4.0.Beta2/drools-expert-docs/html_single/index.html#d0e5989 insert = inserts a new object in the working memory update = tells the engine that an existing object in the working memory has changed Unexpected question from someone that "h

Re: [rules-users] how to use not in oparator in guided decision table in 5.2 version of Guvnor ?

This is not possible in 5.2 In 5.4 you can use BRL fragments as columns (consequentially free-form DRL too). This is not an unreasonable expectation though, so please open a JIRA and I'll endeavor to add as soon as possible (but not back-port to 5.2). https://issues.jboss.org/browse/GUVNOR With

[rules-users] I am writing rules in DSL .I would like to know how to configure it's debugger in Eclipse?

I had successfully configured debugger when I had written normal rules.But currently I have been writing rules in DSL and also trying to configure debugger(in eclipse) but I haven't got any success yet.Please help me -- View this message in context: http://drools.46999.n3.nabble.com/I-am-writi

[rules-users] In drools what is the exact difference between Insert and Update ??

what is the exact difference between Insert and Update ?? I am little confused here when to used insert and when to use update ?? and is it possible to retrieved updated object from working memory without using *UPDATE* keyword -- View this message in context: http://drools.46999.n3.nabble.com/I

[rules-users] In drools what is the exact difference between Insert and Update ??

what is the exact difference between Insert and Update ?? I am little confused here when to used insert and when to use update ?? and is it possible to retrieved updated object from working memory without using *UPDATE* keyword -- View this message in context: http://drools.46999.n3.nabble.com/I

[rules-users] Is it possible to extend rules using DRL and DSL if yes can any one please share me it's sample example ??

I had written many rules in my previous project and also successfully applied it's (Drools) most of the features .One of them is extend feature.But Currently I am writing rules using DSL but *I am not able to use extend feature using DSL Always getting Exception like root points to NULL expecting T

[rules-users] how to use not in oparator in guided decision table in 5.2 version of Guvnor ?

Hi, how do we specify the condition field1 not in (A,B,C) in a guided decision table in Guvnor 5.2? I can use field1 in (A,B,C) but no option to specify not in (A,B,C) if no other option within the guided decision table, I suppose I would have to go the template route. unfortunately, we have

Re: [rules-users] MVEL interpretation

MVEL compiles the string to it's own evaluation tree, it then "evaluates" that tree at runtime so simulate runtime code. We do a further optimisation for performance where after MVEL executes a statement so many times, we'll JIT it to bytecode to get improved execution performance. Mark On 26

[rules-users] NPE from LHS of rule is not returned by Drools to calling program

During development of our Drools rule base I had a case where a rule compiled fine, but at runtime a NPE is thrown by MVEL when applying the predicate (LHS) because the Coverage.vehicleSupplement attribute was NULL. I had expected the NPE to be returned to my calling java program so that my try/ca

Re: [rules-users] Import statement in WebGuided DecisonTable

The view source for the package shows *all* DRL including imports, globals, rules etc. The view source for an individual asset just shows the rule (or whatever) DRL. You don't normally need to worry that the decision table source does not show an import - unless you are retrieving the source throu

Re: [rules-users] Import statement in WebGuided DecisonTable

Thanks Manstis,It is working fine when i click ViewSource for package,the import statements which I added are displaying import java.util.List;... But,When I navigate to decisontable(rule),and click ViewSource,the import statements are not displaying.I need to add import statements in that rule(g

Re: [rules-users] Import statement in WebGuided DecisonTable

Sure. You need to add the import statement to the package (in which the Web Guided Decision Table asset resides) definition. Click on the package (where in the LHS "Knowledge Bases" tree view), click on "Edit" tab and add the required import in the top section. On 28 March 2012 13:46, srinivasas

[rules-users] PostGIS Drools Integration

Hi, We have a system which streams data containing geospatial information that represents aircraft into a PostGIS database where we also store geographic areas of interest. We would like to create, with Drools, rules which utilise the PostGIS geospatial functions as part of the Rules that we deve

[rules-users] Import statement in WebGuided DecisonTable

Hi, Is it possible to write Import Statement like import java.util.List in WebGuided DecisonTable.If it is possible,can you suggest me,how to write that import statement.Please Thanks Sanda -- View this message in context: http://drools.46999.n3.nabble.com/Import-statement-in-WebGuided-DecisonT