Re: [rules-users] best way to write this rule?
On 28 August 2011 01:23, Warner Onstine warn...@gmail.com wrote: As a player I have: - a list of badges I am in progress of completing And also a list of badges a player already has, to avoid acquiting it over and over again. - something I've just done that could go towards one or more of these badges The or more is essential. I can imagine that certain things need to be done more than once. Is that so? Within the game there are: - a list of potential badges that a player could earn - with a set of things to do to earn each badge (what I'm considering the rules) Notice that the definition of a badge and how to earn it is very similar to what has to be recorded for a player's progress. It is certainly possible to write a rule for each badge to determine whether a player has achieved it. But it could be much simpler if all achievements are tallied individually, because then rules just need to check for each badge whether a player's achievements match the badge's requirements; this can be done with a single rule. -W In short I don't want to have to go through each thing each player has done and try and determine which rule to run, I just want to pass in: - their set of badges (with steps they've completed so far) - what badges are available to earn (to match against) - what they just did Maybe I'm thinking about this the wrong way and there's an easier way to do this. Still trying to figure the best implementation of the rule and rule set. My goal is to load all the rules at load time (and reload when I add a new badge) so that I have a full knowledgebase and can just run it whenever someone does something in the game. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] Drools and OpenJPA
Hi all, I am trying to get Drools working with OpenJPA. Currently I am stuck on the named query ProcessInstancesWaitingForEvent. The term in elements(... seams to be Hibernate specific and can not be compiled by the OpenJPA JPQL compiler. Is there any workaround for this problem? thx Alexander -- View this message in context: http://drools.46999.n3.nabble.com/Drools-and-OpenJPA-tp3290343p3290343.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] java.lang.NoSuchFieldError: DESCR
Am a newbe to the Drools. When am trying http://www.softwarepassion.com/getting-started-with-drools-flow/ tutorial to run the program in this tutorial it is giving this exception Exception in thread main java.lang.NoSuchFieldError: DESCR at org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:539) at org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:28) at com.softwarepassion.droolsflow.SPDroolsFlowExample.readKnowledgeBase(SPDroolsFlowExample.java:30) at com.softwarepassion.droolsflow.SPDroolsFlowExample.main(SPDroolsFlowExample.java:20) how can i resolve this one -- View this message in context: http://drools.46999.n3.nabble.com/java-lang-NoSuchFieldError-DESCR-tp3290363p3290363.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] fireAllRules() doesn't return back
Hi,I'm using drools-5.3.0.Beta1. I've following rule definition: import java.util.*; declare Student name : String @key subjectGradeMap : HashMap end rule Subject grade points dialect mvel when $u : Student() then $u.subjectGradeMap[CompSc] += 100; System.out.println(Marks added); end While executing RHS of above rule, fireAllRules() doesn't return, it hangs.Please help.Thanks,Neel ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] rule parse error for null check
Hi,I'm using drools-5.3.0.Beta1. I've following rule file:
import java.util.*;
declare Student
name : String @key
subjectGradeMap : HashMap
end
rule Subject grade points
dialect mvel
when
$u : Student()
then
if($u.subjectGradeMap == null)
{
$u.subjectGradeMap = new HashMapString,Integer();
}
$u.subjectGradeMap[CompSc] += 100;
System.out.println(Marks added);
end
I get following error while rule compilation:Unable to Analyse Expression
if($u.subjectGradeMap == null);
{
$u.subjectGradeMap = new HashMapString,Integer();
};
$u.subjectGradeMap[CompSc] += 100;
System.out.println(Marks added);:
[Error: was expecting type: java.lang.Object; but found type: Unknown]
[Near : {... if($u.subjectGradeMap == null) }]
^
[Line: 1, Column: 1] : [Rule name='Subject grade points']
Please let me know if this is correct usage in the above scenario.
Thanks,Neel
___
rules-users mailing list
rules-users@lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] fireAllRules() doesn't return back
It hangs? Or the rule get executed once and again? I don't see anything wrong with your rule. Are you sure you are not doing any update() od modify() inside your rule? Can you share with us how are you creating and interacting with the knowledge base? Best Regards, Esteban Aliverti - Developer @ http://www.plugtree.com - Blog @ http://ilesteban.wordpress.com 2011/8/28 Neel neelesh...@yahoo.co.in Hi, I'm using drools-5.3.0.Beta1. I've following rule definition: import java.util.*; declare Student name : String @key subjectGradeMap : HashMap end rule Subject grade points dialect mvel when $u : Student() then $u.subjectGradeMap[CompSc] += 100; System.out.println(Marks added); end While executing RHS of above rule, fireAllRules() doesn't return, it hangs. Please help. Thanks, Neel ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] fireAllRules() doesn't return back
You are adding 100 to a non-existing Map entry. Doing this in Java code like e.g. HashMapString,Integer m = $u.getSubjectGradeMap(); m.put( CompSc, m.get( CompSc ) + 100 ); would have thrown a NullPointerException, and you would have seen the problem. MVEL, with its balmy-barmy way of hiding the realities of programming from you, sinks you in an infinite loop... Verified with current master, and I won't create a JIRA for this one either, as moticated previously. -W 2011/8/28 Neel neelesh...@yahoo.co.in Hi, I'm using drools-5.3.0.Beta1. I've following rule definition: import java.util.*; declare Student name : String @key subjectGradeMap : HashMap end rule Subject grade points dialect mvel when $u : Student() then $u.subjectGradeMap[CompSc] += 100; System.out.println(Marks added); end While executing RHS of above rule, fireAllRules() doesn't return, it hangs. Please help. Thanks, Neel ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] rule parse error for null check
See JBRULES-3064 https://issues.jboss.org/browse/JBRULES-3064, dialect
mvel flouts generic parameters.
If you omit String,Integer after new HashMap all is well. Of course,
this is another MVEL bug or restriction - who knows.
But don't try to work around this by
then
if($u.subjectGradeMap == null){
$u.subjectGradeMap = new HashMap*/*String,Integer*/*();
}
You'll just run into another MVEL bug.
-W
2011/8/28 Neel neelesh...@yahoo.co.in
Hi,
I'm using drools-5.3.0.Beta1. I've following rule file:
import java.util.*;
declare Student
name : String @key
subjectGradeMap : HashMap
end
rule Subject grade points
dialect mvel
when
$u : Student()
then
if($u.subjectGradeMap == null)
{
$u.subjectGradeMap = new HashMapString,Integer();
}
$u.subjectGradeMap[CompSc] += 100;
System.out.println(Marks added);
end
I get following error while rule compilation:
Unable to Analyse Expression if($u.subjectGradeMap == null);
{
$u.subjectGradeMap = new HashMapString,Integer();
};
$u.subjectGradeMap[CompSc] += 100;
System.out.println(Marks added);:
[Error: was expecting type: java.lang.Object; but found type: Unknown]
[Near : {... if($u.subjectGradeMap == null) }]
^
[Line: 1, Column: 1] : [Rule name='Subject grade points']
Please let me know if this is correct usage in the above scenario.
Thanks,
Neel
___
rules-users mailing list
rules-users@lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users
___
rules-users mailing list
rules-users@lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users
