Re: [rules-users] Guvnor Hates Me
by Ronald Albury
First - I'd like to thank everyone for their help. I am finding Guvnor
less intuitive than I had hoped and I will need your continued patience and
assistance to understand it.
Problem 1:
I added Sample.drl (which contains two rules) from inside Eclipse, and
Guvnor split it into two rules (HelloWorld and GoodBye). I later changed
Sample.drl and when I went to update it thru Eclipse the 'Update' selection
was not highlighted - only the Add was available. So I added it again.
Now in Guvnor I have the two rules from when I first added the file, and
now the Sample.drl file itself. The Sample.drl file has the changes in it
and the two rules do not.
Problem 2:
I modified the Sample.drl file inside Eclipse again and went to update it
in Guvnor. It wouldn't let me update it - I could only Add. So I went
ahead and did an add. I can not find the changes anywhere in Guvnor.
Problem 3:
When I go to validate a rule in Guvnor it complains that it has an error
importing com.scs.test.Message. That is one of the classes in the PoJo jar
file that I have in Guvnor. I wanted the rules to be in com.scs.test.rules
and the Java code to be in com.scs.test. Can someone explain to me where I
have to put the Model, and if the Java classes need to have the same
package as the rules.
I am also having general problems about when to Save things. I originally
thought that when I uploaded something into Guvnor that was enough ... but
it appears that (at least under some conditions) I have to Save as well.
Do I have to Save things I've uploaded from Eclipse too? Guvnor never
seems to have what I think it should have.
14 years, 10 months
Guvnor hates me
by Ronald Albury
Newbie issue:
I created a package, com.scs.test
I added a model to that package (a java Jar file with POJOs in it). The
jar contains com.scs.test.Message and com.scs.test.Person.
I edited the package's "Configuration: Imported Types" to include the two
objects from the model (com.scs.test.Message and com.scs.test.Person).
I go to the package assets and open a business rule. When I click on the
plus sign across from When I get the message "Note: No model has been
defined. Tip: you will want to import or define a model for this user
interface to work !".
I thought I had imported a model. When I look at the package assets, the
model is listed right there. The objects are listed as "Imported Types".
What am I doing wrong?
Thanks
14 years, 10 months
Re: [rules-users] string replace collision problem
by FrankVhh
Hi,
Sorry, but I fogot about you :-(.
It does not work because both wolfgang and I did get your question wrong.
If I were you, I would try to work from the opposite direction and check
whether a String matches S but not SF. Than replace that S by VOL.
A second rule could than safely check for SF and replace that by S.
In short, reverse your salience, check that S is not SF and make sure that
you replace the right S in the RHS of your rules. You do not want to update
the WM.
Regards,
Frank
fiitkar wrote
>
> Sorry, it does not work.
> For input SF I allways get VOLVOLFVOL.
>
> Once again: if the input is S the output should be VOL. But if the input
> string contains SF the output should be S and not VOL.
>
> For example:
> SF --> S
> SSF --> VOLS
> SFSF -> SS
> etc.
>
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14 years, 10 months
org.drools.compiler.DroolsParserException while adding Package from DRL
by ssprick
Hello,
let me give you some context at first:
I'm trying to update my drools engine and guvnor from 5.1M1 to 5.3Final.
I exported my existing rules package via Guvnor 5.1 GUI into xml and
imported it back into a fresh Guvnor 5.3. The package content looks fine in
Guvnor and a package binary can be built successfully.
Now something strange happens:
5.1 engine - 5.1 guvnor --> works fine
5.1 engine - 5.3 guvnor --> works fine
5.3 engine - 5.3 guvnor --> fail
(5.3 engine - 5.1 guvnor --> not tested yet)
Let's assume the case "5.3 engine - 5.3 guvnor":
At first all I got was an unexpected global exception -- the globals aren't
added to the rulebase while reading the package. So the system is right
throwing that exception.
But why aren't they added? I figured out that there were millions of errors
while parsing the URL rule package from DRL.
So many errors, that the parser itself gets into an unhandled state and
throws the exception mentioned below.
To mention that:
I retried the same scenario with an empty package, even without any fact
model inserted but got the same error while parsing the package during
creation of a knowledge session.
My questions is:
Why does the old 5.1 engine just do well with the package from the new 5.3
Guvnor while the new 5.3 engine fails?
As I see it, the binary package creation by the guvnor has to be correct
otherwise the old engine would fail too.
I appreciate any help on resolving if there is anything wrong on my side or
if it is a real error in the parser code as the exception intends. Thank
you!
url: http://127.0.0.1:8181/drools-guvnor/rest/packages/defaultPackage/binary
java.lang.IndexOutOfBoundsException: Index: 23, Size: 23
at java.util.ArrayList.RangeCheck(Unknown Source)
at java.util.ArrayList.get(Unknown Source)
at org.antlr.runtime.CommonTokenStream.LT(CommonTokenStream.java:103)
at org.drools.lang.ParserHelper.reportError(ParserHelper.java:386)
at org.drools.lang.DRLParser.compilationUnit(DRLParser.java:182)
at org.drools.compiler.DrlParser.compile(DrlParser.java:225)
at org.drools.compiler.DrlParser.parse(DrlParser.java:136)
at org.drools.compiler.DrlParser.parse(DrlParser.java:141)
at
org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java:394)
at
org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:586)
at
org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:37)
at
de.tiq.rules.drools.DrlUrlRuleResource.getKnowledgePackages(DrlUrlRuleResource.java:77)
at
de.tiq.rules.drools.DroolsEngine.createKnowledgeBase(DroolsEngine.java:264)
at de.tiq.rules.drools.DroolsEngine.run(DroolsEngine.java:95)
at de.tiq.rules.TIQRulesEngine.executeRuleResource(TIQRulesEngine.java:178)
at de.tiq.quartz.QuartzTaskExecutor.execute(QuartzTaskExecutor.java:173)
at org.quartz.core.JobRunShell.run(JobRunShell.java:199)
at
org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:546)
ERROR JobRunShell - Job TIQRULES_PROJECT4.TIQRULES_PROJECT4 threw an
unhandled Exception:
java.lang.RuntimeException: org.drools.compiler.DroolsParserException:
Unexpected exception raised while parsing. This is a bug. Please contact the
Development team :
Index: 23, Size: 23
at
org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:692)
at
org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:37)
at
de.tiq.rules.drools.DrlUrlRuleResource.getKnowledgePackages(DrlUrlRuleResource.java:77)
at
de.tiq.rules.drools.DroolsEngine.createKnowledgeBase(DroolsEngine.java:264)
at de.tiq.rules.drools.DroolsEngine.run(DroolsEngine.java:95)
at de.tiq.rules.TIQRulesEngine.executeRuleResource(TIQRulesEngine.java:178)
at de.tiq.quartz.QuartzTaskExecutor.execute(QuartzTaskExecutor.java:173)
at org.quartz.core.JobRunShell.run(JobRunShell.java:199)
at
org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:546)
Caused by: org.drools.compiler.DroolsParserException: Unexpected exception
raised while parsing. This is a bug. Please contact the Development team :
Index: 23, Size: 23
at org.drools.compiler.DrlParser.compile(DrlParser.java:242)
at org.drools.compiler.DrlParser.parse(DrlParser.java:136)
at org.drools.compiler.DrlParser.parse(DrlParser.java:141)
at
org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java:394)
at
org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:586)
... 8 more
ERROR ErrorLogger - Job (TIQRULES_PROJECT4.TIQRULES_PROJECT4 threw an
exception.
org.quartz.SchedulerException: Job threw an unhandled exception. [See nested
exception: java.lang.RuntimeException:
org.drools.compiler.DroolsParserException: Unexpected exception raised while
parsing. This is a bug. Please contact the Development team :
Index: 23, Size: 23]
at org.quartz.core.JobRunShell.run(JobRunShell.java:210)
at
org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:546)
Caused by: java.lang.RuntimeException:
org.drools.compiler.DroolsParserException: Unexpected exception raised while
parsing. This is a bug. Please contact the Development team :
Index: 23, Size: 23
at
org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:692)
at
org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:37)
at
de.tiq.rules.drools.DrlUrlRuleResource.getKnowledgePackages(DrlUrlRuleResource.java:77)
at
de.tiq.rules.drools.DroolsEngine.createKnowledgeBase(DroolsEngine.java:264)
at de.tiq.rules.drools.DroolsEngine.run(DroolsEngine.java:95)
at de.tiq.rules.TIQRulesEngine.executeRuleResource(TIQRulesEngine.java:178)
at de.tiq.quartz.QuartzTaskExecutor.execute(QuartzTaskExecutor.java:173)
at org.quartz.core.JobRunShell.run(JobRunShell.java:199)
... 1 more
Caused by: org.drools.compiler.DroolsParserException: Unexpected exception
raised while parsing. This is a bug. Please contact the Development team :
Index: 23, Size: 23
at org.drools.compiler.DrlParser.compile(DrlParser.java:242)
at org.drools.compiler.DrlParser.parse(DrlParser.java:136)
at org.drools.compiler.DrlParser.parse(DrlParser.java:141)
at
org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java:394)
at
org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:586)
... 8 more
applicationinstance: de.tiq.web.Application@312737
StatusProcessor: de.tiq.quartz.monitoring.StatusProcessor@1059849
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14 years, 10 months
Guvnor cluster problems
by jayadev
One of our business users made changes to a rule package - added an excel
sheet, modified few existing excel sheets, but, his changes are not
reflected on the second server [load balancer took him to server1] On his
screen he can see the total number of excel sheets as 41, but, when I login
[and load balancer took me to server2] I see total number of excel sheets as
40.
So, I added a new excel sheet with that name on server2. Now when business
user tries to pull the list of excel sheets he gets an
"InvocationTargetException" What could be the problem?
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14 years, 10 months
multi-factor rule
by Ronald Albury
Hi - I am a Drools newbie and I apologize in advance if the answer to my
question is intuitively obvious to the casual user.
I have an object that has two fields: location(there are more than 50
locations) and age. I am having difficulty building clean rules for the
following pseudo-code
// Rule One
if(location == "A") {
if(age > 60)
do_something();
}
// Rule Two
else if(location == "B") {
if(age > 70)
do_something();
}
// Rule Three
else if(location == "C") {
if(age > 80)
do_something();
}
// Rule Four
else {
if(age > 65)
do_something();
}
The issue comes with Rule Four. How do I avoid writing the rule so that I
don't have to say (location!="A"&&location!="B"&&location!="C") ? I also
don't want to have to write an explicit rule for every possible location.
I considered an activation-group with salience to have the rules executed
in order, but the problem is that if rules 1-3 do not fire, then rule 4
fires for all locations - I can get a hit if location=="C" and age==70.
Is it possible to have a 'Map' and do something like
(age>map.get(location)) ? I could live with creating a map with all
possible locations for key, although I'd rather not go this route.
This problem is typical for the types of rules I'll be writing ... there
can be completely different sets of rule criteria depending on location.
Thanks in advance for your suggestions and your patience.
14 years, 10 months
