Re: [rules-users] [rules-dev] DRL - Local objects
Adhir,
Im facing the same challenge using rules in a ETL process where
performance is a main concern (some millisecs do the different when you have
millions of executions), so I'm using Globals to keep data in the session.
You can add a global object as a global variable in the session scope and
all
the rules will have access to it in conditions and actions.
MyHelperClass helper = new MyHelperClass();
StatelessKnowledgeSession statelessSession =
kb.newStatelessKnowledgeSession();
if (statelessSession == null){
log.error("Session was not created.");
return;
}
statelessSession.setGlobal("myHelper", helper);
In the DRL you import the class and define the global. You can also define
some static (or not) methods in the helper class to assit you and use them
as functions in your rules (if used as functions, methods needs to be
static, if no static, then they can be used as methods of the global
instance in
the consequence block)
import com.mycompany.rules.helpers.MyHelperClass;
import function
com.mycompany.helpers.MyHelperClass.SOME_FUNCTION;
global com.emycompany.helpers.MyHelperClass helper;
This solution is not ideal, because you relay on java classes (code outside
of the rules and RETE) to perform evaluations (functions with evals in
conditions) and
the consequence hide some code in java classes, which is not so good because
one of the main features of a rule engine is the separation of the logic
from the
static code... but it works and it helps sometimes.
Good luck.
On Wed, Mar 23, 2011 at 7:55 AM, Adhir Mehta wrote:
> Thanks for the reply.
>
> I think I was not up to the point. Modifying facts re-executes the rules to
> maintain the truth. In my case, I want to pass the data between the rules
> and also do not want rules to execute again. I know if no-loop option is
> specified, it will not be re-executed however I do not want rule engine to
> even go & check for no-loop option (which is additional work).
>
> I may be wrong as I am new to drools.
>
> Thanks,
> Adhir
>
>
> On Wed, Mar 23, 2011 at 11:48 AM, Mark Proctor wrote:
>
>> On 23/03/2011 05:46, Adhir Mehta wrote:
>>
>> Hi,
>>
>> I have written the rule DRL file having around 30 rules in it. Some of
>> the rules do intermediate calculation and those calculation result is
>> expected in the other rules in same DRL file. I can do this by modifying the
>> facts objects in one rule and get the value in other rule. However,
>> modifying the facts object rebuild the RETE tree and affects the
>> performance. Is there any way by which I can pass the data across the rules
>> in same DRL file without rebuilding the RETE tree. (I am more concerned
>> about the performance)
>>
>> Please continue this conversation on the USER mailing list
>> http://www.jboss.org/drools/lists.html
>>
>> Modifying facts does not rebuild the rete. Adding/Removing rules causes
>> changes to Rete tree.
>>
>>
>> Thanks,
>> Adhir
>>
>>
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[rules-users] Question about the FROM feature in RETE
Hi all, Has been so long since the last time I posted something in this email list is nice to write again here, even if is a silly question. Please if this question has being answered before don't be angry, and just say so to make a better search, because looking for it in the group gave me no results. About the "from": If I have 2 rules containing a "from a list" sentence in the LHS, and happens that the from is from the same list, will RETE share that in the same node? I mean, will drools go through the list once or twice? I wanna optimize the access to the list. My first impression is that you guys made a great job and the "from ..." should be treated as any other conditional item and share nodes... but I just wanna be sure, because if not, then the best approach is to extract all the elements in one rule and make the other rules to just check for each element. Thanks. -- ----- Felipe Piccolini felipe.piccol...@gmail.com ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] template 101
Im not sure if you can find a complete standalone example for this, but I
think your problem now is with eval().
Can you copy your stackTrace here?
I think you can not do eval( literal == literal),
but you could make a function to test that if you wanna use eval and give
the function the value of @{symbol}
2010/4/27 Stefan Marconi
> Hi Felipe,
>
> thank you for your reply. I have now added the extra quotes but to no
> avail. I still get the same errors.
>
> Is there somewhere a stand-alone example with the compile instructions to
> check that everything works? I have the impression that I'm having troubles
> with the whole eclipse config and plugin.
>
> Thanks! Stefan
>
>
> 2010/4/26 Felipe Piccolini
>
> Using template you will see that the @{} is replaced "just as is" from the
>> data (for example from a spreadsheet), so
>> if you have a value in the example will be replaced as text in the rule
>> and you will have something like this:
>>
>> if @{symbol} == "THE_SYMBOL"
>>
>> ==>
>>
>> rule "A stand alone rule THE_SYMBOL"
>> dialect "mvel"
>> when
>> eval(THE_SYMBOL == "AAA")
>> then
>> System.out.println("this symbol is" + THE_SYMBOL)
>> end
>> --
>>
>> So as you can see, the variable is no more a variable in the generated
>> rule, just text, so if you wanna use it as a string, you should add
>> double-quote
>> (")
>>
>> your rule template should be something like this:
>>
>>
>> rule "A stand alone rule @{symbol}"
>> dialect "mvel"
>> when
>> eval("@{symbol}" == "AAA")
>> then
>> System.out.println("this symbol is" + "@{symbol}")
>> end
>>
>>
>>
>>
>> 2010/4/22 Stefan Marconi
>>
>>> Hi,
>>>
>>> just starting using drools and need to use templates but having error
>>> messages (described in comments in the code below).
>>> I checked the meaning of the error messages but still can't figure it
>>> out.
>>> I modified an simple rule according to the template section of the drools
>>> manual: btw I use the eclipse with the drools-core plugin.
>>>
>>> Thanks for your help. Stefan
>>>
>>> template header
>>> symbol
>>>
>>> package com.test.processor; # [ERR 102] Line 4:26 mismatched input ';'
>>> expecting 'identifier' in template header
>>> template "test"
>>> rule "A stand alone rule @{symbol}"
>>> dialect "mvel"
>>> when
>>> eval(@{symbol} == "AAA")
>>> then
>>> System.out.println("this symbol is" + @{symbol})
>>> end
>>> end template # Multiple markers at this line
>>> # - [ERR 103] Line 13:0 rule 'rule_key' failed predicate:
>>> {(validateIdentifierKey(DroolsSoftKeywords.RULE))}? in rule
>>> # - [ERR 101] Line 13:4 no viable alternative at input 'template' in rule
>>> end
>>>
>>>
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>>>
>>
>>
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>> -
>> Felipe Piccolini
>> felipe.piccol...@gmail.com
>>
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Re: [rules-users] template 101
Using template you will see that the @{} is replaced "just as is" from the
data (for example from a spreadsheet), so
if you have a value in the example will be replaced as text in the rule and
you will have something like this:
if @{symbol} == "THE_SYMBOL"
==>
rule "A stand alone rule THE_SYMBOL"
dialect "mvel"
when
eval(THE_SYMBOL == "AAA")
then
System.out.println("this symbol is" + THE_SYMBOL)
end
--
So as you can see, the variable is no more a variable in the generated rule,
just text, so if you wanna use it as a string, you should add double-quote
(")
your rule template should be something like this:
rule "A stand alone rule @{symbol}"
dialect "mvel"
when
eval("@{symbol}" == "AAA")
then
System.out.println("this symbol is" + "@{symbol}")
end
2010/4/22 Stefan Marconi
> Hi,
>
> just starting using drools and need to use templates but having error
> messages (described in comments in the code below).
> I checked the meaning of the error messages but still can't figure it out.
> I modified an simple rule according to the template section of the drools
> manual: btw I use the eclipse with the drools-core plugin.
>
> Thanks for your help. Stefan
>
> template header
> symbol
>
> package com.test.processor; # [ERR 102] Line 4:26 mismatched input ';'
> expecting 'identifier' in template header
> template "test"
> rule "A stand alone rule @{symbol}"
> dialect "mvel"
> when
> eval(@{symbol} == "AAA")
> then
> System.out.println("this symbol is" + @{symbol})
> end
> end template # Multiple markers at this line
> # - [ERR 103] Line 13:0 rule 'rule_key' failed predicate:
> {(validateIdentifierKey(DroolsSoftKeywords.RULE))}? in rule
> # - [ERR 101] Line 13:4 no viable alternative at input 'template' in rule
> end
>
>
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Re: [rules-users] Reading DRL file with large number of rules
> > FieldConstraintDescr("message");
> > LiteralRestrictionDescr restr = new
> > LiteralRestrictionDescr("==",String.valueOf( i ));
> > constr.addRestriction( restr );
> > pat.addConstraint( constr );
> > lhs.addDescr( pat );
> > rule.addAttribute( dialect );
> > rule.setLhs( lhs );
> > rule.setConsequence( "System.out.println("+i+");\n" );
> > result.addRule( rule );
> > }
> > return result;
> > }
> >
> > public static class Message {
> >
> > public static final int HELLO = 0;
> > public static final int GOODBYE = 1;
> >
> > private String message;
> >
> > private int status;
> >
> > public String getMessage() {
> > return this.message;
> > }
> >
> > public void setMessage(String message) {
> > this.message = message;
> > }
> >
> > public int getStatus() {
> > return this.status;
> > }
> >
> > public void setStatus(int status) {
> > this.status = status;
> > }
> >
> > }
> >
> > }
> >
> >
> >
> > 2010/2/6 Wolfgang Laun
> >>
> >> Have you tried increasing the heap size for the JVM?
> >>
> >> "20K rules [of the same] simple form" sounds as if you are
> >> trying to use a hammer where a screwdriver would be appropriate.
> >> If your description is correct, these 20K rules would be nothing
> >> but 20K if statements, in disguised form. There is nothing
> >> in that which would gain from Drools' Rete algorithm with
> >> its superior "many-patterns-many-object" matching capabilities.
> >>
> >> -W
> >>
> >> On Sat, Feb 6, 2010 at 12:42 PM, kpowerinfinity
> >> wrote:
> >> > Hello,
> >> >
> >> > We are trying to run a DRL file that has more than 20K rules, all of
> >> > which have the simple form:
> >> >
> >> >
> >> >
> >> > rule "testpeoplenumber"
> >> >salience 100
> >> >dialect "mvel"
> >> >when
> >> >LineItem( inventoryItemCode == "8903210392090")
> >> > then
> >> >InventoryItem fact0 = new InventoryItem();
> >> >fact0.setCategoryCode( "ONPROMO" );
> >> >insert(fact0 );
> >> > end
> >> >
> >> > However, the rule file is not getting parsed by the builder, and
> >> > either takes a very long time (well over half an hour), or gives a
> >> > Heap Overflow exception. We tried with a smaller file (about 1K rules,
> >> > and the situation is the same).
> >> >
> >> > The parsing code is:
> >> > org.drools.KnowledgeBaseConfiguration kbc =
> >> > org.drools.KnowledgeBaseFactory.newKnowledgeBaseConfiguration(null,
> >> > cl);
> >> >org.drools.KnowledgeBase kbase =
> >> > org.drools.KnowledgeBaseFactory.newKnowledgeBase(kbc);
> >> >org.drools.builder.KnowledgeBuilderConfiguration
> >> > knowledgeBuilderConfig =
> >> >
> >> >
> org.drools.builder.KnowledgeBuilderFactory.newKnowledgeBuilderConfiguration(null,
> >> > cl);
> >> >org.drools.builder.KnowledgeBuilder builder =
> >> > org.drools.builder.KnowledgeBuilderFactory.newKnowledgeBuilder(kbase,
> >> > knowledgeBuilderConfig);
> >> >org.drools.builder.impl.KnowledgeBuilderImpl builderImpl =
> >> > builder as org.drools.builder.impl.KnowledgeBuilderImpl;
> >> >
> >> >
> >> > builder.add(org.drools.io.ResourceFactory.newFileResource(filename),
> >> >org.drools.builder.ResourceType.DRL);
> >> >
> >> > We are using Drools v5. We've tried both with the java jar as well as
> >> > in .NET (using IKVM to compile it).
> >> >
> >> > Any help in understanding why this is happening and how it can be
> >> > avoided will be appreciated.
> >> >
> >> > Warm Regards
> >> > Krishna.
> >> >
> >> > --
> >> > http://kpowerinfinity.wordpress.com
> >> > http://www.linkedin.com/in/kpowerinfinity
> >> > ___
> >> > rules-users mailing list
> >> > rules-users@lists.jboss.org
> >> > https://lists.jboss.org/mailman/listinfo/rules-users
> >> >
> >>
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> >
> >
> >
> > --
> > Edson Tirelli
> > JBoss Drools Core Development
> > JBoss by Red Hat @ www.jboss.com
> >
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> >
> >
>
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Re: [rules-users] MVEL VariableResolverFactory problem on eclipse
ekke, thanks for the tip... ill try that. anyways, the error appears in the "problems" tab, the rules compile with no problems... thats odd... about the emails...please tell me if Im sending double emails by mistake. Thanks again. On 04-10-2007, at 11:12, ekke wrote: felipe, perhaps something went wrong ? I really got mails from you twice, but have deleted them in the meantime, I'll watch it and if it happens again I'll tell you. back to your problem: -clean helps in many cases after upgrading plugins, but you have done it. so perhaps there are anywhere incompatible MVEL jars on your classpath ? what if you try it with a fresh eclipse install ? same happens ? ekke Felipe Piccolini wrote: wow sorry, but I detect some aggresivity in the air... I didnt sent any private massage AND to the list. (except for the one trying to clarify something with mark) what r u talking about?... and of course I did -clean. I thought this list was meant to let users interact providing feedback and ask for problems about drools.. and thats exactly what I did. If u cant help me with this, then just dont. Some people has sent me emails asking me about problems I report on the list and noone answers. I hope the good community frienship dont be broke for this kind of missunderstanding. :) On 03-10-2007, at 16:02, ekke wrote: felipe, please DON'T send your messages to the list AND to private mail- accounts ! .have you started eclipse with -clean ? ekke Felipe Piccolini wrote: updated to 4.0.1 and creating a new drools project. Any .drl file (and also rule flows) shows errors with this info on problems tab on eclipse: org/mvel/integration/VariableResolverFactory no more info, actualy I can run the rules (from the Sample.drl) but it shows the problem. I tried changing libraries and jdt dependencies, but not succes... what can it be?...anyone has this problem too? Thanks. Felipe Piccolini M. [EMAIL PROTECTED] ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users -- View this message in context: http://www.nabble.com/MVEL- VariableResolverFactory-problem-on-eclipse-tf4563677.html#a13026772 Sent from the drools - user mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users Felipe Piccolini M. [EMAIL PROTECTED] ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users -- View this message in context: http://www.nabble.com/MVEL- VariableResolverFactory-problem-on-eclipse-tf4563677.html#a13042068 Sent from the drools - user mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users Felipe Piccolini M. [EMAIL PROTECTED] ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] BRMS - how to use variables on Action part?
Shahad, Thanks for the complete guide, but I already did all that, the problem is in the text box on the set/update action part... I cant enter any text there, just numbers or 1.2 and I assume is a restriction because the field was declared as Number type (Long or Double). If i declare the field as String the text box let me enter any text, but it sorrounds it with "" so the text is converted to a String when I see the code (view source). Thanks anyways. Trying to define a formula on the LHS (where it can be defined) didnt help me because I dont know how to use it. On 04-10-2007, at 11:17, Shahad Ahmed wrote: Hi Felipe, When you define your LHS in the BRMS, there is an option to assign a variable to the expression. In the When part, there should be a little green triangle beside Person. Click on this to get a dialog called "Modify constraints for Person". At the bottom of this dialog is an option to set a variable name to bind to Person. Type p, or whatever you want into the text box and then click the Set button beside the text box. You should now have a LHS constraint of the form p:Person(...). Now create a Then action by clicking the + at the RHS of the Then part. A dialog will appear called "Add a new action". The first two option allows you to pick the variable p you just created - you probably want the second option of "modify a fact" as you want to call update(p) after modifying p. You should now see something like Set [p] in the Then part. Click on the Green triangle above Set [p] and you will get a dialog called "Add a field" with a list of the fields in the Person class. Choose the one you want to set (approvedMount?). What this does is actually call the method called setApprovedMount (Press View Source button to see). The Set action should now have a text box where you can enter the parameter $income * 1.2. I've had a look at the source code for this functionality and it only allows Setter methods to be called - unfortunately you cannot call any other methods on Person. Regards Shahad On 10/3/07, Felipe Piccolini <[EMAIL PROTECTED]> wrote: Ok, so to fit on the "not ignored emails" from the list Mark posted, I changed the title. However I following in the list anyways beacuse Im resending this email in less than 3 days. Note: Im not desperate, nor this is for today. This just came out today yesterday and well... its important to me, but I think I can get a work around for now. So here is the real on-topic question. - Anyone knows how to use variables (from fields) setted on LHS, to modify a field on the RHS using the GUI editor from BRMS? What I need is to write this rule on BRMS. rule "Set approvedMount for a women" no-loop true when $p: Person($sex: sex == "F", $income: incomeMount) then $p.setApprovedMount($income * 1.2); update ($p); end I know I can use formulas, but I only know how to set those on LHS, I dont know how to put a formula on RHS (setter of the field to modify). Thanks. Felipe Piccolini M. [EMAIL PROTECTED] ___ 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 Felipe Piccolini M. [EMAIL PROTECTED] ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] MVEL VariableResolverFactory problem on eclipse
wow sorry, but I detect some aggresivity in the air... I didnt sent any private massage AND to the list. (except for the one trying to clarify something with mark) what r u talking about?... and of course I did -clean. I thought this list was meant to let users interact providing feedback and ask for problems about drools.. and thats exactly what I did. If u cant help me with this, then just dont. Some people has sent me emails asking me about problems I report on the list and noone answers. I hope the good community frienship dont be broke for this kind of missunderstanding. :) On 03-10-2007, at 16:02, ekke wrote: felipe, please DON'T send your messages to the list AND to private mail- accounts ! .have you started eclipse with -clean ? ekke Felipe Piccolini wrote: updated to 4.0.1 and creating a new drools project. Any .drl file (and also rule flows) shows errors with this info on problems tab on eclipse: org/mvel/integration/VariableResolverFactory no more info, actualy I can run the rules (from the Sample.drl) but it shows the problem. I tried changing libraries and jdt dependencies, but not succes... what can it be?...anyone has this problem too? Thanks. Felipe Piccolini M. [EMAIL PROTECTED] ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users -- View this message in context: http://www.nabble.com/MVEL- VariableResolverFactory-problem-on-eclipse-tf4563677.html#a13026772 Sent from the drools - user mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users Felipe Piccolini M. [EMAIL PROTECTED] ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] BRMS - how to use variables on Action part?
Ok, so to fit on the "not ignored emails" from the list Mark posted, I changed the title. However I following in the list anyways beacuse Im resending this email in less than 3 days. Note: Im not desperate, nor this is for today. This just came out today yesterday and well... its important to me, but I think I can get a work around for now. So here is the real on-topic question. - Anyone knows how to use variables (from fields) setted on LHS, to modify a field on the RHS using the GUI editor from BRMS? What I need is to write this rule on BRMS. rule "Set approvedMount for a women" no-loop true when $p: Person($sex: sex == "F", $income: incomeMount) then $p.setApprovedMount($income * 1.2); update($p); end I know I can use formulas, but I only know how to set those on LHS, I dont know how to put a formula on RHS (setter of the field to modify). Thanks. Felipe Piccolini M. [EMAIL PROTECTED] ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] MVEL VariableResolverFactory problem on eclipse
updated to 4.0.1 and creating a new drools project. Any .drl file (and also rule flows) shows errors with this info on problems tab on eclipse: org/mvel/integration/VariableResolverFactory no more info, actualy I can run the rules (from the Sample.drl) but it shows the problem. I tried changing libraries and jdt dependencies, but not succes... what can it be?...anyone has this problem too? Thanks. Felipe Piccolini M. [EMAIL PROTECTED] ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] URGENT: BRMS - how to use variables on Action part?
Anyone knows how to use variables (from fields) setted on LHS, to modify a field on the RHS using the GUI editor from BRMS? What I need is to write this rule on BRMS. rule "Set approvedMount for a women" no-loop true when $p: Person($sex: sex == "F", $income: incomeMount) then $p.setApprovedMount($income * 1.2); update($p); end I know I can use formulas, but I only know how to set those on LHS, I dont know how to put a formula on RHS (setter of the field to modify). Thanks. Felipe Piccolini M. [EMAIL PROTECTED] ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] update Fact on BRMS bad restriction. Please change.
Mark, Im sorry, I never try to say the work u did is useless. I think the work is great and I thank u guys for doing this. The problem I have is that I need to use the GUI the way the business guy write the logic and I cant find the easy way to do this. Maybe is my fault because I dont know how to use the tool, but if you could help me to do this (you say using formulas) I'll be very thankful. On 02-10-2007, at 18:49, Mark Proctor wrote: Felipe Piccolini wrote: Using the GUI editor for rules is a nice way to make rules, however the editor put restrictions on what u can fill on the textfields for a type of attribute, ie. if I have a Double attribute (approvedMount) in a bean (Person) I cant make the update of this field based on another field ... what I wanna do (and cant on BRMS GUI) is: rule "Set approvedMount for a women" no-loop true when $p: Person($sex: sex == "F", $income: incomeMount) then $p.setApprovedMount($income * 1.2); update($p); end Where my Person class has incomeMount and approvedMount as Double. BRMS GUI only let me put 1.2 but no words to refer the $income variable. What can I do?... where will be this possible?... it is quite useless if I cant do what I want, because it force me to rebuild the bean Yes all the work we do is totally useless. did you try specifying a formula? to have fields names like "approvedMountIncresedBasedOnIncome" and make a formula inside the setter, which is exactly the code I wanna put on rules, because is the bussines logic. Felipe Piccolini M. [EMAIL PROTECTED] ___ 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 Felipe Piccolini M. [EMAIL PROTECTED] ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] update Fact on BRMS bad restriction. Please change.
Using the GUI editor for rules is a nice way to make rules, however the editor put restrictions on what u can fill on the textfields for a type of attribute, ie. if I have a Double attribute (approvedMount) in a bean (Person) I cant make the update of this field based on another field ... what I wanna do (and cant on BRMS GUI) is: rule "Set approvedMount for a women" no-loop true when $p: Person($sex: sex == "F", $income: incomeMount) then $p.setApprovedMount($income * 1.2); update($p); end Where my Person class has incomeMount and approvedMount as Double. BRMS GUI only let me put 1.2 but no words to refer the $income variable. What can I do?... where will be this possible?... it is quite useless if I cant do what I want, because it force me to rebuild the bean to have fields names like "approvedMountIncresedBasedOnIncome" and make a formula inside the setter, which is exactly the code I wanna put on rules, because is the bussines logic. Felipe Piccolini M. [EMAIL PROTECTED] ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] BRMS Business rules Editor - RHS using variables and functions
How can I use variables from LHS to modify an attribute in RHS using business rules editor GUI?? Also I added a new function trying to work around but didnt work I need to get this using business rules editor (GUI): rule "my rule" no-loop true when $f: Fact(number >= 10, $s: score) then $f.setScore($s + 5); update($f); end Thanks. Felipe Piccolini M. [EMAIL PROTECTED] ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] Problem with BRMS (null and modify with variable)
Hi, When I try to compare an attribute against a null I got a "null" instead... the field is an Object. (Date). When I try to modify an attribute using the last value captured on LHS, I cant use the variable name in the textfield. The field type is numeric, but I need to use a formula ($var + 1) to modify the value in the BRMS.rule "Age uninformed" no-loop true ruleflow-group "age" when $p: Person(birthDate == null, $score: score) then $p.setScore($score + 5); update($p);endDo I have to open a Jira for this?Also: I didnt see a Jira, but Is it possible in the business rules editor to add new multiple comparators in new lines???Like this:$p: Person(codProfession == 103 || == 201 || == 203 || == 204 || == 211 || == 218 || == 220 || == 403 )Because actually this is aranged in the right side making it dificult to manage when you have several comparatos... Picture 1.png Description: application/applefile <>Thanks. Felipe Piccolini M.[EMAIL PROTECTED] ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Minor Issue in writing DSL
Edson, What about sugar to be able to write DSLs dor this: DLS: A Person - having age equals to 10 - or equals to 15 - or greather than 20 DRL: p: Person( age == 10 || == 15 || > 20) Right now, the " - " put a 'comma' at the end of the line making this: p: Person( age == 10, || == 15, || > 20) What throws errors... Is it possible to do that? I love the || == thing in each line... Thanks. On 21-08-2007, at 16:14, Saleem Lakhani wrote: Thanks Edson. That helped. One more thing, can’t we execute something simple like: ObjectA(units != families) When both units & families are defined as int in ObjectA with their public get and set methods. This is the exception I am receiving. org.drools.rule.InvalidRulePackage: Unable to return Declaration for identifier 'families' : [Rule name=Rule6, agendaGroup=Rating, salience=0, no-loop=false] Its even showing correctly in drl editor. If I swap the positions of units & families then the same exception is thrown for ‘units’. regards, saleem -Original Message- From: [EMAIL PROTECTED] [mailto:rules-users- [EMAIL PROTECTED] On Behalf Of Edson Tirelli Sent: Tuesday, August 21, 2007 1:56 PM To: Rules Users List Subject: Re: [rules-users] Minor Issue in writing DSL Saleem, For sure, your mapping must have some typo or mistake. A rule like this works and is correct: rule XYZ when ObjectA( application==true || banker==true || officer==true ) then // do something end Drools does NOT inspect object fields... only public methods. If you are using a DSL, make sure your "drl" file is named "dslr" (this is new in 4.0), so when you open it in eclipse, you have a tab that shows you the result of the DSL template processing. This way you will be able to see any eventual mapping mistake. []s Edson 2007/8/21, Saleem Lakhani < [EMAIL PROTECTED]>: When I use the syntax below and write like: [when]ABC=ObjectA(application==true || banker==true || officer==true) on drl it gives me the following error: Multiple markers at this line: -unknown:116:39 Unexpected token '==' -unknown:116:25 Unexpected token '||' -unknown:116:64 Unexpected token '==' Again, there are NO attributes in ObjectA named application, banker or officer. Thanks -Original Message- From: [EMAIL PROTECTED] [mailto: rules-users- [EMAIL PROTECTED] On Behalf Of Edson Tirelli Sent: Tuesday, August 21, 2007 9:49 AM To: Rules Users List Subject: Re: [rules-users] Minor Issue in writing DSL Drools respects encapsulation, so it works with javabean method name conventions. If you have a method isApplication() that returns a boolean, does not matter how your class calculates the return value. Same for any other method. In 4.0, you can write: ObjectA( application == true || banker == true ) To map that as a DSL, just follow your usual procedure and syntax. []s Edson 2007/8/21, Saleem Lakhani < [EMAIL PROTECTED]>: Hi, If I had a rule written in DSL using Drools 3.0 like; 1. [when] when1=r : ObjectA( ) 2. [when] when2=eval(r.isApplication() || r.isBanker()) There are no attributes in class Object with name application and banker but there are methods in ObjectA with names isApplication() & isBanker() which does some work and return Boolean based on some facts. What is the correct way of writing the same rule using Drools 4.0 ? Also, if the above attributes were present in ObjectA what would have been the best way to write it in DSL using Drools 4.0 Thanks, ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users -- Edson Tirelli Software Engineer - JBoss Rules Core Developer Office: +55 11 3529-6000 Mobile: +55 11 9287-5646 JBoss, a division of Red Hat @ www.jboss.com ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users -- Edson Tirelli Software Engineer - JBoss Rules Core Developer Office: +55 11 3529-6000 Mobile: +55 11 9287-5646 JBoss, a division of Red Hat @ www.jboss.com ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users Felipe Piccolini M. [EMAIL PROTECTED] ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] Problems using Packages from BRMS (urls, serialization, enums..)
(ObjectInputStream.java:348) at org.drools.rule.Package.readExternal(Package.java:184) at java.io.ObjectInputStream.readExternalData(ObjectInputStream.java: 1755) at java.io.ObjectInputStream.readOrdinaryObject (ObjectInputStream.java:1717) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1305) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:348) at org.drools.util.BinaryRuleBaseLoader.addPackage (BinaryRuleBaseLoader.java:82) ... 3 more Thanks for help... I really need to use enums in my model... :) Felipe Piccolini M. [EMAIL PROTECTED] ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Problems with BRMS
I still have the problem in stand alone version trying to save an uploaded jar with model classes... This works fine in brms.war version in jbossAS 4.0.5. What am I doing wrong?...What can I do to solve this?... I like the way extra constrains are added down side (not in the right side) of the constraint, like this: $p: Person(code == 101 || == 102 || == 104 || == 105 || == 106 || == 107 || because in the actual BRMS GUI this is added aside...making the window larger to the right. and that is awful. Thanks Im having problems using the BRMS 4.0GA and BRMS 4.0 stand alone (v 1.0). Things just crash without reason... importing models crash sometimes, and trying to create LHS in business rules got stall... not showing any option to add fact or whatever... In standalone version I have this error trying to load a model jar: ERROR 13-08 18:14:32,552 (ApplicationContext.java:log:675) Exception while dispatching incoming RPC call com.google.gwt.user.client.rpc.SerializationException: java.lang.ClassNotFoundException: org.drools.brms.client.rpc.RuleAsset at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamReader.d eserialize(ServerSerializationStreamReader.java:156) at com.google.gwt.user.client.rpc.impl.AbstractSerializationStreamReader .readObject(AbstractSerializationStreamReader.java:61) at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamReader.d eserializeValue(ServerSerializationStreamReader.java:70) at org.jboss.seam.remoting.gwt.GWTRemoteServiceServlet.processCall (GWTRemoteServiceServlet.java:285) at org.jboss.seam.remoting.gwt.GWTRemoteServiceServlet.doPost (GWTRemoteServiceServlet.java:181) at javax.servlet.http.HttpServlet.service(HttpServlet.java: 709) at javax.servlet.http.HttpServlet.service(HttpServlet.java: 802) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter (ApplicationFilterChain.java:252) at org.apache.catalina.core.ApplicationFilterChain.doFilter (ApplicationFilterChain.java:173) at org.jboss.seam.web.ContextFilter.doFilter (ContextFilter.java:56) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter (ApplicationFilterChain.java:202) at org.apache.catalina.core.ApplicationFilterChain.doFilter (ApplicationFilterChain.java:173) at org.apache.catalina.core.StandardWrapperValve.invoke (StandardWrapperValve.java:213) at org.apache.catalina.core.StandardContextValve.invoke (StandardContextValve.java:178) at org.apache.catalina.core.StandardHostValve.invoke (StandardHostValve.java:126) at org.apache.catalina.valves.ErrorReportValve.invoke (ErrorReportValve.java:105) at org.apache.catalina.core.StandardEngineValve.invoke (StandardEngineValve.java:107) at org.apache.catalina.valves.AccessLogValve.invoke (AccessLogValve.java:541) at org.apache.catalina.connector.CoyoteAdapter.service (CoyoteAdapter.java:148) at org.apache.coyote.http11.Http11Processor.process (Http11Processor.java:869) at org.apache.coyote.http11.Http11BaseProtocol $Http11ConnectionHandler.processConnection(Http11BaseProtocol.java: 664) at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket (PoolTcpEndpoint.java:527) at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt (LeaderFollowerWorkerThread.java:80) at org.apache.tomcat.util.threads.ThreadPool $ControlRunnable.run(ThreadPool.java:684) at java.lang.Thread.run(Thread.java:613) Caused by: java.lang.ClassNotFoundException: org.drools.brms.client.rpc.RuleAsset at java.net.URLClassLoader$1.run(URLClassLoader.java:200) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:188) at java.lang.ClassLoader.loadClass(ClassLoader.java:306) at java.lang.ClassLoader.loadClass(ClassLoader.java:251) at java.lang.ClassLoader.loadClassInternal (ClassLoader.java:319) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:242) at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamReader.d eserialize(ServerSerializationStreamReader.java:135) ... 24 more PD: I checked the classes/enums in my model jar and all of them are Serializable... PD2: Also have this error trying to show rule source from a business rule in the insurance example which is included with the stand alone brms. Thanks Felipe Piccolini M. [EMAIL PROTECTED] ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman
Re: [rules-users] Problems with BRMS
Its me again I have to apologize...it seems it was my fault... as far as I can get, the problem was some classes not having right libraries or imports... jodatime for example... but the halt on modal window and the lack of good error report had me on limbo... Thanks anyway. On 13-08-2007, at 19:03, Felipe Piccolini wrote: Using the last brms from snapshot repo (http:// cruisecontrol.jboss.com/cc/artifacts/jboss-rules) I can load a model jar but it never show me the options to create LHS or RHS ... this is a picture of how it stay for ever and ever... I really need to use the brms, we like it very much but still can use it right... Thanks. On 13-08-2007, at 18:17, Felipe Piccolini wrote: Im having problems using the BRMS 4.0GA and BRMS 4.0 stand alone (v 1.0). Things just crash without reason... importing models crash sometimes, and trying to create LHS in business rules got stall... not showing any option to add fact or whatever... In standalone version I have this error trying to load a model jar: ERROR 13-08 18:14:32,552 (ApplicationContext.java:log:675) Exception while dispatching incoming RPC call com.google.gwt.user.client.rpc.SerializationException: java.lang.ClassNotFoundException: org.drools.brms.client.rpc.RuleAsset at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamReader.d eserialize(ServerSerializationStreamReader.java:156) at com.google.gwt.user.client.rpc.impl.AbstractSerializationStreamReader .readObject(AbstractSerializationStreamReader.java:61) at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamReader.d eserializeValue(ServerSerializationStreamReader.java:70) at org.jboss.seam.remoting.gwt.GWTRemoteServiceServlet.processCall (GWTRemoteServiceServlet.java:285) at org.jboss.seam.remoting.gwt.GWTRemoteServiceServlet.doPost (GWTRemoteServiceServlet.java:181) at javax.servlet.http.HttpServlet.service(HttpServlet.java: 709) at javax.servlet.http.HttpServlet.service(HttpServlet.java: 802) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter (ApplicationFilterChain.java:252) at org.apache.catalina.core.ApplicationFilterChain.doFilter (ApplicationFilterChain.java:173) at org.jboss.seam.web.ContextFilter.doFilter (ContextFilter.java:56) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter (ApplicationFilterChain.java:202) at org.apache.catalina.core.ApplicationFilterChain.doFilter (ApplicationFilterChain.java:173) at org.apache.catalina.core.StandardWrapperValve.invoke (StandardWrapperValve.java:213) at org.apache.catalina.core.StandardContextValve.invoke (StandardContextValve.java:178) at org.apache.catalina.core.StandardHostValve.invoke (StandardHostValve.java:126) at org.apache.catalina.valves.ErrorReportValve.invoke (ErrorReportValve.java:105) at org.apache.catalina.core.StandardEngineValve.invoke (StandardEngineValve.java:107) at org.apache.catalina.valves.AccessLogValve.invoke (AccessLogValve.java:541) at org.apache.catalina.connector.CoyoteAdapter.service (CoyoteAdapter.java:148) at org.apache.coyote.http11.Http11Processor.process (Http11Processor.java:869) at org.apache.coyote.http11.Http11BaseProtocol $Http11ConnectionHandler.processConnection(Http11BaseProtocol.java: 664) at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket (PoolTcpEndpoint.java:527) at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt (LeaderFollowerWorkerThread.java:80) at org.apache.tomcat.util.threads.ThreadPool $ControlRunnable.run(ThreadPool.java:684) at java.lang.Thread.run(Thread.java:613) Caused by: java.lang.ClassNotFoundException: org.drools.brms.client.rpc.RuleAsset at java.net.URLClassLoader$1.run(URLClassLoader.java:200) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:188) at java.lang.ClassLoader.loadClass(ClassLoader.java:306) at java.lang.ClassLoader.loadClass(ClassLoader.java:251) at java.lang.ClassLoader.loadClassInternal (ClassLoader.java:319) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:242) at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamReader.d eserialize(ServerSerializationStreamReader.java:135) ... 24 more PD: I checked the classes/enums in my model jar and all of them are Serializable... PD2: Also have this error trying to show rule source from a business rule in the insurance example which is included with the stand alone brms. Thanks Felipe Piccolini M. [EMAIL PROTECTED] ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo
[rules-users] Problems with BRMS
Im having problems using the BRMS 4.0GA and BRMS 4.0 stand alone (v 1.0). Things just crash without reason... importing models crash sometimes, and trying to create LHS in business rules got stall... not showing any option to add fact or whatever... In standalone version I have this error trying to load a model jar: ERROR 13-08 18:14:32,552 (ApplicationContext.java:log:675) Exception while dispatching incoming RPC call com.google.gwt.user.client.rpc.SerializationException: java.lang.ClassNotFoundException: org.drools.brms.client.rpc.RuleAsset at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamReader.dese rialize(ServerSerializationStreamReader.java:156) at com.google.gwt.user.client.rpc.impl.AbstractSerializationStreamReader.re adObject(AbstractSerializationStreamReader.java:61) at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamReader.dese rializeValue(ServerSerializationStreamReader.java:70) at org.jboss.seam.remoting.gwt.GWTRemoteServiceServlet.processCall (GWTRemoteServiceServlet.java:285) at org.jboss.seam.remoting.gwt.GWTRemoteServiceServlet.doPost (GWTRemoteServiceServlet.java:181) at javax.servlet.http.HttpServlet.service(HttpServlet.java:709) at javax.servlet.http.HttpServlet.service(HttpServlet.java:802) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter (ApplicationFilterChain.java:252) at org.apache.catalina.core.ApplicationFilterChain.doFilter (ApplicationFilterChain.java:173) at org.jboss.seam.web.ContextFilter.doFilter (ContextFilter.java:56) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter (ApplicationFilterChain.java:202) at org.apache.catalina.core.ApplicationFilterChain.doFilter (ApplicationFilterChain.java:173) at org.apache.catalina.core.StandardWrapperValve.invoke (StandardWrapperValve.java:213) at org.apache.catalina.core.StandardContextValve.invoke (StandardContextValve.java:178) at org.apache.catalina.core.StandardHostValve.invoke (StandardHostValve.java:126) at org.apache.catalina.valves.ErrorReportValve.invoke (ErrorReportValve.java:105) at org.apache.catalina.core.StandardEngineValve.invoke (StandardEngineValve.java:107) at org.apache.catalina.valves.AccessLogValve.invoke (AccessLogValve.java:541) at org.apache.catalina.connector.CoyoteAdapter.service (CoyoteAdapter.java:148) at org.apache.coyote.http11.Http11Processor.process (Http11Processor.java:869) at org.apache.coyote.http11.Http11BaseProtocol $Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664) at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket (PoolTcpEndpoint.java:527) at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt (LeaderFollowerWorkerThread.java:80) at org.apache.tomcat.util.threads.ThreadPool $ControlRunnable.run(ThreadPool.java:684) at java.lang.Thread.run(Thread.java:613) Caused by: java.lang.ClassNotFoundException: org.drools.brms.client.rpc.RuleAsset at java.net.URLClassLoader$1.run(URLClassLoader.java:200) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:188) at java.lang.ClassLoader.loadClass(ClassLoader.java:306) at java.lang.ClassLoader.loadClass(ClassLoader.java:251) at java.lang.ClassLoader.loadClassInternal(ClassLoader.java: 319) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:242) at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamReader.dese rialize(ServerSerializationStreamReader.java:135) ... 24 more PD: I checked the classes/enums in my model jar and all of them are Serializable... PD2: Also have this error trying to show rule source from a business rule in the insurance example which is included with the stand alone brms. Thanks Felipe Piccolini M. [EMAIL PROTECTED] ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] no-loop using PropertyChangeListeners instead of update() in rules...doesnt work
Hi, I have a problem with no-loop, I run the integration test for no- loop and it works fine because it uses "update" and the fact dont use propertychangelisteners... But if I run the same test but the rule doesnt have update(cheese) and Chesse has propertyChangeListeners to notify when an attribute change/is-updated then no-loop doesnt work... Is this a bug or do i have to look another way to write my rules? I really likes the way beans can control property changes using listeners and dont have to force business ppl to write update in rules :) Thanks. PD: I copied this email because used a reply for an old email (and I dont wanna be lost in time) :) On 26-04-2006, at 8:30, Mark Proctor wrote: no-loop is in the integration tests and works fine. think it has for a while. We will be releasing RC3 any day now, try it then and if its still a problem let us know. Mark Unknown wrote: I try to use the rule attribute no-loop but it seems not to function... I set it to true but each rule is evaluated two or several times. Is it OK with the RC2?? Thank you Felipe Piccolini M. [EMAIL PROTECTED] ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] RuleFlow group as default or MAIN?
Well I guess I got it wrong... startProcess is not about what
ruleflow-group start the process, is about what ruleflow definition
start firing all rules... but this leads me to the point that this is
useful if you have several ruleflows (definitions and files) in the same
ruleBase... why somebody would like to have that?... to control flow?
or to try to fire a specific rule and then fire subsequent rules
in a flow?...
My problem is that I dont wanna have many ruleflows definitions for 1
ruleBase, if I would, then I'll use sub-flows...
If I have just 1 ruleflow file, then I dont wanna do startProcess()
and I still wanna put rules without ruleflow-group defined so they all
belong to the MAIN/DEFAULT group.
Thanks.
On 08-08-2007, at 12:33, Felipe Piccolini wrote:
Is there anyway to set a default ruleflow-group or a MAIN one so I
can put rules without
ruleflow-group in the same drl as those with ruleflow-group defined
and use a .rf where I define
a flow in the way that all rules without ruleflow-group (MAIN/
DEFAULT) are fired and then a
specific ruleflow-group?
In this way could be not necessary to use session.startProcess
("my_ruleflowgroup") in java, just
call fireAllRules() and design the process creating a RuleFlowGroup
called/id as "MAIN".
Actually I can do this programatic, but I'm forced to put ruleflow-
group in every rule... if I dont wanna to
group some rules in a specific ruleflow-group I have to call them
as ruleflow-group "MAIN"... and I dont
wanna the business people to worry about flows when they write
rules if they dont need to...
Thanks.
Felipe Piccolini M.
[EMAIL PROTECTED]
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Felipe Piccolini M.
[EMAIL PROTECTED]
___
rules-users mailing list
rules-users@lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] RuleFlow group as default or MAIN?
Is there anyway to set a default ruleflow-group or a MAIN one so I
can put rules without
ruleflow-group in the same drl as those with ruleflow-group defined
and use a .rf where I define
a flow in the way that all rules without ruleflow-group (MAIN/
DEFAULT) are fired and then a
specific ruleflow-group?
In this way could be not necessary to use session.startProcess
("my_ruleflowgroup") in java, just
call fireAllRules() and design the process creating a RuleFlowGroup
called/id as "MAIN".
Actually I can do this programatic, but I'm forced to put ruleflow-
group in every rule... if I dont wanna to
group some rules in a specific ruleflow-group I have to call them as
ruleflow-group "MAIN"... and I dont
wanna the business people to worry about flows when they write rules
if they dont need to...
Thanks.
Felipe Piccolini M.
[EMAIL PROTECTED]
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rules-users mailing list
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[rules-users] How to accumulate from objects in a collection?
Hi, this is just a dumb question for drools-languaje gurus... like Edson :) How ca I write a rule (CE in LHS) for accumulate atributes inside an object, but this objects are not facts, they are inside a collection which is an attribute from a fact... pretty messy right?...lol.. well, the business problem is this. I need to count (accumulate) vacation days used on previous vacation requests. I have an User (which is one fact) having a collection of oldVacationRequests and an actual VacationRequest (the another fact). So the rules is like this: discount to the available days for vacation those used in previous vacation request, and those days are the days between initDate and endDate in each old vacation request with isAproved seted true and having endDate before the actual vacation request initDate. did I explain myself?... so I need to know if this is possible I was trying to do something like this...but is obviously wrong...:) rule "remove used vacation days" no-loop when vr: VacationRequestVO($days: availableDays , $iniDate: initDate ) $u: UserVO( $vacReqList: vacationRequestList ) $usedDays: Number (intValue > 1) from accumulate ( $ovr: VacationRequestVO( isAproved == true, endDate < $iniDate, $uDays: usedDays), from $vacReqList, count($uDays)) then vr.setAvailableDays($days - $usedDays); end Thanks... Felipe Piccolini M. [EMAIL PROTECTED] ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Quick syntax question
This works:
if your fact is:
cl = Class.forName("java.lang.String");
And the rule is:
rule "Test Class type"
when
$cl: Class(this == (String.class))
then
System.out.println("Test Class: OK");
end
On 26-07-2007, at 12:11, Eric Miles wrote:
Eh, I need a marker fact that identifies if a certain rule needs to
be run. So I'm inserting a java.lang.Class object into the
session. The T determines if a rule is activated. Does that make
sense?
On Thu, 2007-07-26 at 16:06 +0100, Anstis, Michael (M.) wrote:
Surely this LHS is matched by the pattern
$sc : SomeClass()
???
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Eric Miles
Sent: 26 July 2007 15:19
To: rules-users@lists.jboss.org
Subject: [rules-users] Quick syntax question
Is there an easier way to write this LHS?
Class(name == 'com.mycompany.SomeClass')
It would be nice to do something like this:
Class(name == SomeClass.class.getName())
Suggestions?
Thanks all!
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Re: [rules-users] JBoss Drools 4.0 Released
Congratz to all the team!!! Amazing work, really fast and hard work done in last months :) On 25-07-2007, at 5:04, Mark Proctor wrote: JBoss Drools 4.0 has just been released :) We are really proud of what we have done here. We believe that we now have the best and most powerful declarative rule language, bar none; commercial or open source. The Rule Flow is excellent and I really enjoyed updating the Conway's Game of Life to Rule Flow; sub Rule Flows and milestone support will be coming in a point release soon. The BRMS has long been requested and we put a lot of effort into the ajax based design. The Eclipse improvements for the debug points and guided editor should help reduce learning curves, opening us to new audiences. Of course performance is now much better, especially for complex rules and the new Sequential Mode should be very popular with decision services. Boss Drools 4.0 can be summarised as: * More expressiveness. * More powerful declarative keywords. * Hibernate ready, with 'from' keyword for evaluating external data. * Pluggable dialects, with new MVEL dialect. * New Rule Flow and Eclipse modeller. * Better Performance. * IDE Improvements. * Enterprise Ready with Web 2.0 Business Rules Management Studio. Resources: * Presentation from Skills Matter http://wiki.jboss.org/wiki/attach? page=JBossRules%2FSkillsMatter20070711.pdf * What's new in JBoss Rules 4.0 http://wiki.jboss.org/wiki/attach? page=JBossRules%2Fwhats_new_in_jbossrules_4.0.pdf Enjoy :) The Drools Team Mark Proctor, Michael Neale, Edson Tirelli, Kris Verlaenen, Fernando Meyer http://blog.athico.com Here is a more detailed enhancements list: Language Expressiveness Enhancements * New Conditional Elements: from(hibernate ready), collect, accumulate and forall * New Field Constraint operators: not matches, not contains, in, not in, memberOf, not memberOf * New Implicit Self Reference field: this * Full support to Conditional Elements nesting, for First Order Logic completeness. * Support to multi-restrictions and constraint connectives && and || * Parser improvements to remove previous language limitations, like character escaping and keyword conflicts * Support to pluggable dialects and built-in support to Java and MVEL * Complete rewrite of DSL engine, allowing for full l10n * Fact attributes auto-vivification for return value restrictions and inline-eval constraints * Support to nested accessors, property navigation and simplified collection, arrays and maps syntax * Improved support to XML rules * Experimental Clips parser support Core Engine Enhancements * Native support to primitive types, avoiding constant autoboxing * Transparent optional Shadow Facts * Rete Network performance improvements for complex rules * Rule-Flow * Stateful and Stateless working memories (rule engine sessions) * Support for Asynchronous Working Memory actions * Rules Engine Agent for hot deployment and BRMS integration * Pluggeable dialects and and full support to MVEL scripting language * Dynamic salience for rules conflict resolution * Parameterized Queries * halt command * Sequential execution mode, faster performance and uses less memory * Pluggable global variable resolver IDE Enhancements * Support for rule break-points on debugging * WYSIWYG support to rule-flows * New guided editor for rules authoring * Upgrade to support all new engine features Business Rules Management System - BRMS * User friendly web interface with nice WEB 2.0 ajax features (GWT) * Package configuration * Rule Authoring easy to edit rules both with guided editor ( drop- down menus ) and text editor * Package compilation and deployment * Easy deployment with Rule Agent * Easy to organize with categories and search assets * Versioning enabled, you can easily replace yours assets with previously saved * JCR compliant rule assets repository Miscellaneous Enhancements * Slimmed down dependencies and smaller memory footprint ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users Felipe Piccolini M. [EMAIL PROTECTED] ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] How to write constraint about a Map inside a Map?
Edson,
Im so sorry, stupid me I dont know what happened but this
doesnt worked yesterday...
dont remember the error, but now is working... must be murphy and his
dominating laws :)
Thanks for reply :)
Confirm: $mf: MyFact( map['mapKey']['innerKey'] == "InnerValue" ) //
DOes work !! :)
On 25-07-2007, at 8:53, Edson Tirelli wrote:
What error are you getting?
I just tested this in MVELSH and it works:
mvel$ map["outerKey"]["innerKey"]
OUT: innerValue
[]s
Edson
2007/7/24, Felipe Piccolini <[EMAIL PROTECTED]>:
Suppouse I have a Map attribute and one of the values is another
Map...how can I check a member of the inner Map?
class MyFact{
Map map;
public MyFact(){
this.map = new HashMap();
}
setter and getter...
}
-- test --
MyFact myFact = new MyFact();
Map innerMap = new HashMap();
innerMap.put("innerKey", new String("InnerValue"));
Map map = new HashMap();
map.put("mapKey", innerMap);
myFact.setMap(map);
set the RuleBase and insert myFact as a fact for the
WorkingMemory...
---
Now... how should I write the rule to check the innerKey ??
rule "test InnerMap"
when
$mf: MyFact( map['mapKey']['innerKey'] ==
"InnerValue" ) // doesnt work...
$mf: MyFact( map['mapKey'].this['innerKey'] ==
"InnerValue" ) // doesnt work...
$mf: MyFact( map['mapKey'].['innerKey'] == "InnerValue" ) //
doesnt work...
$mf: MyFact( $innerMap: map['mapKey'], $innerMap['innerKey'] ==
"InnerValue" ) // doesnt work...
$mf: MyFact( $innerMap: map['mapKey'] -> ($innerMap
['innerKey'] == "InnerValue" )) // doesnt work...
Thanks.
Felipe Piccolini M.
[EMAIL PROTECTED]
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Office: +55 11 3529-6000
Mobile: +55 11 9287-5646
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[rules-users] How to write constraint about a Map inside a Map?
Suppouse I have a Map attribute and one of the values is another
Map...how can I check a member of the inner Map?
class MyFact{
Map map;
public MyFact(){
this.map = new HashMap();
}
setter and getter...
}
-- test --
MyFact myFact = new MyFact();
Map innerMap = new HashMap();
innerMap.put("innerKey", new String("InnerValue"));
Map map = new HashMap();
map.put("mapKey", innerMap);
myFact.setMap(map);
set the RuleBase and insert myFact as a fact for the
WorkingMemory...
---
Now... how should I write the rule to check the innerKey ??
rule "test InnerMap"
when
$mf: MyFact( map['mapKey']['innerKey'] ==
"InnerValue" ) // doesnt work...
$mf: MyFact( map['mapKey'].this['innerKey'] ==
"InnerValue" ) // doesnt work...
$mf: MyFact( map['mapKey'].['innerKey'] == "InnerValue" ) //
doesnt work...
$mf: MyFact( $innerMap: map['mapKey'], $innerMap['innerKey'] ==
"InnerValue" ) // doesnt work...
$mf: MyFact( $innerMap: map['mapKey'] -> ($innerMap
['innerKey'] == "InnerValue" )) // doesnt work...
Thanks.
Felipe Piccolini M.
[EMAIL PROTECTED]
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[rules-users] How to compare to Class type in LHS??
Hi,
Im trying to compare a field to a Class type but when parsing I
get NPE and when I debug,
the constraint is a ReturnValueConstraint but the
restriction.getRequiredDeclarations()
return a Declaration[] array initializated, but empty, so I can't get
the declaration evaluated...
I needed because I'm working on a kind of parser for the rules for
analisys and testing... but using
the already parsed package.
Here is a pseudo rule for test...
rule "Test A"
when
$mf: MyFact(clazz == (SomeClass.class))
then
System.out.println("Test A: OK");
end
Actualy, the rule compiles (with the NPE output, not stackTrace, just
the java.lang.NullPointerException,
and it works fine.. I mean I get "Test A: OK" as output, but cant get
the SomeClass.class reference when I
look into the debugger.
Is this the right way to compare clases? if not, whats the right way?
(Im trying to not do == "SomeClass")
Felipe Piccolini M.
[EMAIL PROTECTED]
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Re: [rules-dev] Re: [rules-users] Problem with update(fact)
...Always change the huge signature... sorry...
Edson,
I tried what you said, but it is not the same... cant get the
expected result.
With agenda-group the can control de flow, but outside the rules
(auto-focus didnt work well),
and before that I prefer to use rule-flow-group (and use the GUI).
What Im trying to get is a set of rules that dont depend on flows or
sequences to work together, because
this set of rules can be large and I dont want the business user have
to check all rules to know how to write
the next rule... they must be writen in an independent way, but work
together...
lock-on-active didnt work either to get that result, because when I
use it stops activations, so the update(fact) actually
has no effect on other rules... I need to put wm.setFocus
("group1");wm.setFocus("group2");..etc. at the java code...
I dont want to do that...
Maybe you can help me...
an example will be this...(pseudo code)
rule "base vacation days"
when
e: Employee( yearsInCompany > 1)
then
e.setVacationDays(10);
update(e);
end
rule "seniors extra vacation days"
when
e: Employee( yearsInCompany > 4, vd: vacationDays)
then
e.setVacationDays(vd+2);
update(e);
end
rule "old-employee extra vacation days"
when
e: Employee( yearsInCompany > 10, vd: vacationDays)
then
e.setVacationDays(vd+4);
update(e);
end
and so on
So I need the business ppl write this rules without knowing the rest
of the rules... I think this is
the idea of having a rule-system...
Thanks.
On 03-07-2007, at 16:40, Edson Tirelli wrote:
Felipe,
Thanks. I'm working on it.
BTW, I forgot to mention, what you are doing to control rules is
a not a good way to do it. You should try agenda-group+lock-on-
active rule attributes instead.
Look at the conway's game of life as an example, and maybe help
us document the feature... :)
[]s
Edson
2007/7/3, Felipe Piccolini < [EMAIL PROTECTED]>:
Edson,
Thanks for the reply... it is nasty...
Jira created...
http://jira.jboss.com/jira/browse/JBRULES-966
Thanks
PD: duplicated email because I forgot to cut the huge-company-
signature... :)
On 03-07-2007, at 14:18, Edson Tirelli wrote:
Felipe,
Ok, this is a nasty damn bug. :(
I'm working on a solution for it right now. May I ask you
please to open a JIRA for it and attach your code bellow?
Thank you,
Edson
2007/7/3, Felipe Piccolini < [EMAIL PROTECTED]>:
I know I already asked this in a previous email, but no answer and
diferent subject... so I'll ask again
I have an issue using update in 2 rules that update the same
object... a loop is created even when I try to
avoid the loop adding an extra condition to each rule... Im
inserting an ArrayList as a fact too, so I can check
the extra condition...
Can anyone tell me how to fix this?
Consider this:
//---RULES-
package cl.bluesoft.test
#list any import classes here.
import java.util.List
import java.util.ArrayList
import cl.bluesoft.test.rules.Fact
#declare any global variables here
rule "test update A"
salience 699
no-loop
when
$f : Fact($n: number > 0)
$list: ArrayList( this excludes "key1" )
then
System.out.println( "A-fact number1:"+$f.getNumber()+ " list
1:"+$list);
$list.add( "key1" );
$f.setNumber($n + 1);
update ($f);
update ($list);
System.out.println("A-fact number2:" +$f.getNumber()+" list
2:" +$list);
end
rule "test update B"
salience 699
no-loop
when
$f : Fact($n: number > 1)
$list: ArrayList( this excludes "key2" )
then
System.out.println( "B-fact number1:" +$f.getNumber()+" list
1:" +$list);
$list.add("key2" );
$f.setNumber($n + 1);
update ($f);
update ($list);
System.out.println("B-fact number2:" +$f.getNumber()+ " list
2:"+$list);
end
//---FACT-
public class Fact implements Serializable {
private static final long serialVersionUID = 331627137981862975L;
private int number;
public Fact(int number){
this.number = number;
}
public Fact(){
this(0);
}
/**
* @return the number
*/
public int getNumber() {
return number;
}
/**
* @param number the num
Re: [rules-users] Problem with update(fact)
Edson,
Thanks for the reply... it is nasty...
Jira created...
http://jira.jboss.com/jira/browse/JBRULES-966
Thanks
PD: duplicated email because I forgot to cut the huge-company-
signature... :)
On 03-07-2007, at 14:18, Edson Tirelli wrote:
Felipe,
Ok, this is a nasty damn bug. :(
I'm working on a solution for it right now. May I ask you please
to open a JIRA for it and attach your code bellow?
Thank you,
Edson
2007/7/3, Felipe Piccolini <[EMAIL PROTECTED]>:
I know I already asked this in a previous email, but no answer and
diferent subject... so I'll ask again
I have an issue using update in 2 rules that update the same
object... a loop is created even when I try to
avoid the loop adding an extra condition to each rule... Im
inserting an ArrayList as a fact too, so I can check
the extra condition...
Can anyone tell me how to fix this?
Consider this:
//---RULES-
package cl.bluesoft.test
#list any import classes here.
import java.util.List
import java.util.ArrayList
import cl.bluesoft.test.rules.Fact
#declare any global variables here
rule "test update A"
salience 699
no-loop
when
$f : Fact($n: number > 0)
$list: ArrayList( this excludes "key1")
then
System.out.println("A-fact number1:"+$f.getNumber()+ " list 1:"+
$list);
$list.add( "key1");
$f.setNumber($n + 1);
update ($f);
update ($list);
System.out.println("A-fact number2:" +$f.getNumber()+" list 2:" +
$list);
end
rule "test update B"
salience 699
no-loop
when
$f : Fact($n: number > 1)
$list: ArrayList( this excludes "key2" )
then
System.out.println( "B-fact number1:"+$f.getNumber()+" list 1:" +
$list);
$list.add("key2" );
$f.setNumber($n + 1);
update ($f);
update ($list);
System.out.println("B-fact number2:" +$f.getNumber()+" list 2:"+
$list);
end
//---FACT-
public class Fact implements Serializable {
private static final long serialVersionUID = 331627137981862975L;
private int number;
public Fact(int number){
this.number = number;
}
public Fact(){
this(0);
}
/**
* @return the number
*/
public int getNumber() {
return number;
}
/**
* @param number the number to set
*/
public void setNumber(int number) {
this.number = number;
}
}
//--TEST-
public class TestUpdateFact implements Serializable {
private static final long serialVersionUID = -574789596641083743L;
/**
* @param args
*/
public static void main(String[] args) {
RuleBase ruleBase = RuleBaseFactory.newRuleBase();
Package pkg = builder.getPackage();
WorkingMemory session = ruleBase.getStatefulSession();
...etc etc...
List list = new ArrayList();
Fact fact1 = new Fact(1);
session.fireAllRules();
etc, etc...
}
}
//OUTPUT
A-fact number1:1 list 1:[]
A-fact number2:2 list 2:[key1]
B-fact number1:2 list 1:[key1]
B-fact number2:3 list 2:[key1, key2]
A-fact number1:3 list 1:[key1, key2]
A-fact number2:4 list 2:[key1, key2, key1]
B-fact number1:4 list 1:[key1, key2, key1]
B-fact number2:5 list 2:[key1, key2, key1, key2]
A-fact number1:5 list 1:[key1, key2, key1, key2]
A-fact number2:6 list 2:[key1, key2, key1, key2, key1]
B-fact number1:6 list 1:[key1, key2, key1, key2, key1]
B-fact number2:7 list 2:[key1, key2, key1, key2, key1, key2]
A-fact number1:7 list 1:[key1, key2, key1, key2, key1, key2]
A-fact number2:8 list 2:[key1, key2, key1, key2, key1, key2, key1]
B-fact number1:8 list 1:[key1, key2, key1, key2, key1, key2, key1]
for ever.
So I have a loop... only when I use update and both rules...
condition about the
list not containing "key1" and "key2" seems not properly chequed...
I dont know...
Can somebody help me? Am I missing something here?
Thanks.
Felipe Piccolini M.
[EMAIL PROTECTED]
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Software Engineer - JBoss Rules Core Developer
Office: +55 11 3529-6000
Mobile: +55 11 9287-5646
JBoss, a division of Red Hat @ www.jboss.com
_
[rules-users] Problem with update(fact)
I know I already asked this in a previous email, but no answer and
diferent subject... so I'll ask again
I have an issue using update in 2 rules that update the same
object... a loop is created even when I try to
avoid the loop adding an extra condition to each rule... Im inserting
an ArrayList as a fact too, so I can check
the extra condition...
Can anyone tell me how to fix this?
Consider this:
//---RULES-
package cl.bluesoft.test
#list any import classes here.
import java.util.List
import java.util.ArrayList
import cl.bluesoft.test.rules.Fact
#declare any global variables here
rule "test update A"
salience 699
no-loop
when
$f : Fact($n: number > 0)
$list: ArrayList( this excludes "key1")
then
System.out.println("A-fact number1:"+$f.getNumber()+" list
1:"+$list);
$list.add("key1");
$f.setNumber($n + 1);
update ($f);
update ($list);
System.out.println("A-fact number2:"+$f.getNumber()+" list
2:"+$list);
end
rule "test update B"
salience 699
no-loop
when
$f : Fact($n: number > 1)
$list: ArrayList( this excludes "key2")
then
System.out.println("B-fact number1:"+$f.getNumber()+" list
1:"+$list);
$list.add("key2");
$f.setNumber($n + 1);
update ($f);
update ($list);
System.out.println("B-fact number2:"+$f.getNumber()+" list
2:"+$list);
end
//---FACT-
public class Fact implements Serializable {
private static final long serialVersionUID = 331627137981862975L;
private int number;
public Fact(int number){
this.number = number;
}
public Fact(){
this(0);
}
/**
* @return the number
*/
public int getNumber() {
return number;
}
/**
* @param number the number to set
*/
public void setNumber(int number) {
this.number = number;
}
}
//--TEST-
public class TestUpdateFact implements Serializable {
private static final long serialVersionUID = -574789596641083743L;
/**
* @param args
*/
public static void main(String[] args) {
RuleBase ruleBase = RuleBaseFactory.newRuleBase();
Package pkg = builder.getPackage();
WorkingMemory session = ruleBase.getStatefulSession();
...etc etc...
List list = new ArrayList();
Fact fact1 = new Fact(1);
session.fireAllRules();
etc, etc...
}
}
//OUTPUT
A-fact number1:1 list 1:[]
A-fact number2:2 list 2:[key1]
B-fact number1:2 list 1:[key1]
B-fact number2:3 list 2:[key1, key2]
A-fact number1:3 list 1:[key1, key2]
A-fact number2:4 list 2:[key1, key2, key1]
B-fact number1:4 list 1:[key1, key2, key1]
B-fact number2:5 list 2:[key1, key2, key1, key2]
A-fact number1:5 list 1:[key1, key2, key1, key2]
A-fact number2:6 list 2:[key1, key2, key1, key2, key1]
B-fact number1:6 list 1:[key1, key2, key1, key2, key1]
B-fact number2:7 list 2:[key1, key2, key1, key2, key1, key2]
A-fact number1:7 list 1:[key1, key2, key1, key2, key1, key2]
A-fact number2:8 list 2:[key1, key2, key1, key2, key1, key2, key1]
B-fact number1:8 list 1:[key1, key2, key1, key2, key1, key2, key1]
for ever.
So I have a loop... only when I use update and both rules...
condition about the
list not containing "key1" and "key2" seems not properly chequed... I
dont know...
Can somebody help me? Am I missing something here?
Thanks.
Felipe Piccolini M.
[EMAIL PROTECTED]
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Re: [rules-users] Dynamic JavaBeans
Mark,
I'v been trying to get the way to patch that, but I must confess
that is way too complex for me now.. My best
guess is that when the update(retract/insert) is done, it just take
the factHandle modified to rebuild the ReteRuleBase
so when the activations are setted in place this doesnt care about
another fact update to fill the AgendaGroupImpl.
I dont really know the best way to modify the code... I bow before
u guys...
Also tried your suggestion using something like : modify ( cheese )
{ price = 25, quality = premium }
But I get compilation erros saying that "modify(myFact) is not
defined"... so I dont really know how to use
this MVEL functionality... got ur "what is new in drools 4.0", search
at examples and mailing-list, but cant get the right way
to make that work.
If you could help me with any working example, or maybe a work-
around... I sont wanna use a set of rules that must be writen in a
sequence mode using salience I need to write a lot of rules in an
independent way.
Sorry for my english, and thank you very much.
On 28-06-2007, at 16:43, Mark Proctor wrote:
feel free to work on a patch for us and let us know what you come
up with.
Mark
Felipe Piccolini wrote:
Mark,
What about my previous mail where I report an issue with update
using dynamic JavaBeans (using propertyListeners)?
The problem is that when the engine is fired again from an
propertyListener the evaluations on conditions (seems to me)
dont take the new state of the Facts changed in the set
call.
I will try using MVEL modify, but thats not the better solution,
because the feature of propertyListerners inside javaBeans let
me write my rules in a cleaner way from BRMS/bussines editor.
Thanks.
On 28-06-2007, at 8:28, Mark Proctor wrote:
If it can be done cleanly I'm not averse to it. however there is
something else...
In the new MVEL dialect you no longer need
propertychangelisteners if you don't want to call update()
modify ( cheese ) { price = 25, quality = premium }
This will modify all the setters and notify the engine at the end
of the block setter. Is that good enough for you?
Mark
Yuri de Wit wrote:
Mark,
btw, If this is a feature that makes sense from Drools pov I
wouldnt
mind giving a shot at implementing it and contributing it back to
Drools.
-- yuri
On 6/28/07, Yuri de Wit <[EMAIL PROTECTED]> wrote:
Sure. The solution I am taking right now is dont use dynamic
properties, which is not optimal (depending on the problem
property
changes not being batched defeats the purpose of dynamic beans).
The bottom line is that I was hoping that this feature would (1)
either already be taken care of in 4.0 or (2) become a feature
request
for future releases.
-- yuri
On 6/28/07, Mark Proctor <[EMAIL PROTECTED]> wrote:
> No we don't do anything to batch property change listener
results. But
> maybe you can do this yourself.
> instead of calling modify, add it to a transaction list (that
you make
> available in the current context). Then at the end of the
consequence
> you can iterate that list and call modify on each object. Or
> alternatively don't use dynamic properties.
>
> Mark
> Yuri de Wit wrote:
> > I am not talking about assert, but modify. I have a dynamic
fact
> > already asserted but now I need to perform N changes on N
different
> > properties on the same object on the same consequence.
Drools is going
> > to traverse the RETE network N times once for each time the
> > PropertiesListener is called (each setProperty called).
> >
> > -- yuri
> >
> > On 6/28/07, Mark Proctor <[EMAIL PROTECTED]> wrote:
> >> Why would doing the assert work at the end of the
consequence be any
> >> quicker than doing it during the consequence?
> >>
> >> Mark
> >> Yuri de Wit wrote:
> >> > I noticed that changes performed on facts asserted
dynamically causes
> >> > the fact to be modified right away and therefore
triggering a RETE
> >> > network traversal and rule schedulings.
> >> >
> >> > For apps with a large number of facts this could be a
significant
> >> > scalability problem. At least in my case, I would like
to be able to
> >> > use dynamic facts and perform any number of updates and
have those
> >> > updates commited to working memory only when the rule
consequence is
> >> > completed.
> >> >
> >> > Looking at the code, it seems that it would not be a
major effort to
> >> > collect the facts received by the
ReteooWorkingMemory.propertyChange
> >> > and perform the actual modifyObject() only when the
consequence
> >> > evaluation is actually completed.
&g
Re: [rules-users] Dynamic JavaBeans
Mark,
What about my previous mail where I report an issue with update
using dynamic JavaBeans (using propertyListeners)?
The problem is that when the engine is fired again from an
propertyListener the evaluations on conditions (seems to me)
dont take the new state of the Facts changed in the set call.
I will try using MVEL modify, but thats not the better solution,
because the feature of propertyListerners inside javaBeans let
me write my rules in a cleaner way from BRMS/bussines editor.
Thanks.
On 28-06-2007, at 8:28, Mark Proctor wrote:
If it can be done cleanly I'm not averse to it. however there is
something else...
In the new MVEL dialect you no longer need propertychangelisteners
if you don't want to call update()
modify ( cheese ) { price = 25, quality = premium }
This will modify all the setters and notify the engine at the end
of the block setter. Is that good enough for you?
Mark
Yuri de Wit wrote:
Mark,
btw, If this is a feature that makes sense from Drools pov I wouldnt
mind giving a shot at implementing it and contributing it back to
Drools.
-- yuri
On 6/28/07, Yuri de Wit <[EMAIL PROTECTED]> wrote:
Sure. The solution I am taking right now is dont use dynamic
properties, which is not optimal (depending on the problem property
changes not being batched defeats the purpose of dynamic beans).
The bottom line is that I was hoping that this feature would (1)
either already be taken care of in 4.0 or (2) become a feature
request
for future releases.
-- yuri
On 6/28/07, Mark Proctor <[EMAIL PROTECTED]> wrote:
> No we don't do anything to batch property change listener
results. But
> maybe you can do this yourself.
> instead of calling modify, add it to a transaction list (that
you make
> available in the current context). Then at the end of the
consequence
> you can iterate that list and call modify on each object. Or
> alternatively don't use dynamic properties.
>
> Mark
> Yuri de Wit wrote:
> > I am not talking about assert, but modify. I have a dynamic fact
> > already asserted but now I need to perform N changes on N
different
> > properties on the same object on the same consequence. Drools
is going
> > to traverse the RETE network N times once for each time the
> > PropertiesListener is called (each setProperty called).
> >
> > -- yuri
> >
> > On 6/28/07, Mark Proctor <[EMAIL PROTECTED]> wrote:
> >> Why would doing the assert work at the end of the
consequence be any
> >> quicker than doing it during the consequence?
> >>
> >> Mark
> >> Yuri de Wit wrote:
> >> > I noticed that changes performed on facts asserted
dynamically causes
> >> > the fact to be modified right away and therefore
triggering a RETE
> >> > network traversal and rule schedulings.
> >> >
> >> > For apps with a large number of facts this could be a
significant
> >> > scalability problem. At least in my case, I would like to
be able to
> >> > use dynamic facts and perform any number of updates and
have those
> >> > updates commited to working memory only when the rule
consequence is
> >> > completed.
> >> >
> >> > Looking at the code, it seems that it would not be a major
effort to
> >> > collect the facts received by the
ReteooWorkingMemory.propertyChange
> >> > and perform the actual modifyObject() only when the
consequence
> >> > evaluation is actually completed.
> >> >
> >> > Does that makes sense? Or are there side effects I am not
seeing? Is
> >> > this a problem that 4.0 already resolves?
> >> >
> >> > thanks in advance,
> >> >
> >> > -- yuri
> >> > ___
> >> > 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
> >>
> > ___
> > rules-users mailing list
> > rules-users@lists.jboss.org
> > https://lists.jboss.org/mailman/listinfo/rules-users
> >
>
> ___
> rules-users mailing list
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> https://lists.jboss.org/mailman/listinfo/rules-users
>
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[rules-users] Dynamic JavaBeans evaluate again, and again...
Hi, I dont know if this is reported or maybe its just my mistake... but when I use dynamic JavaBeans and PropertyListeners the re-evaluation of the rules seems to skip the condition evaluation, so they fire again.. and again, and again.. I have a couple of rules where the conditions are true then I change the value of an attribute and the rules re-evaluate again... and so on. I putted a special constraint in the conditions of that rule so when it is fired, it modify an atribute of another fact (tested with the another attribute of the same fact but it happens anyway), so I try to be sure that rule will not fire again... but it does ignoring the constraints... checked with the logger and the debugger... Is this a bug or it is supposed to be so, and I need to think another way to write my rules?... I want to use the dynamic JavaBeans, so no need to write inserts/ updates... When I set the insert(Object, FALSE) the problem dissapears. Thanks. Felipe Piccolini M. [EMAIL PROTECTED] ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] RuleFlow Constraint Editor and Code Completion (includes screenshots)
Thanks Mark, I'll be waiting for it :) On 22-06-2007, at 11:41, Mark Proctor wrote: Yes trunk, you can get the last successful build from here: http://dev45.qa.atl.jboss.com:8585/hudson/job/jboss-rules/ I'll be doing MR3 over the weekend. Mark Felipe Piccolini wrote: Is this (constraint editor) just available on SVN trunk? because I downloaded the 4.0.0.11754MR2 from the web and the editor of ruleflow doesnt show the constraint thing on the Properties View (eclipse). On 21-06-2007, at 23:07, Mark Proctor wrote: http://markproctor.blogspot.com/2007/06/ruleflow-constraint- editor-and-code.html - To unsubscribe from this list please visit: http://xircles.codehaus.org/manage_email Felipe Piccolini M. [EMAIL PROTECTED] ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users Felipe Piccolini M. [EMAIL PROTECTED] ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] BRMS - How to access rules packages driectly from the repository - Rule Base Deployment
But this is not the answer for his question. He is asking a way to
get the package deployen in the REPOSITORY
not as a file.
Your code gets the .pkg FILE and compile it into a rulebase (which
can be serializated into JNDI or something else)
But the question is: How (API, example) can I access to a package
defined using the BRMS gui and located in the
repository???... becase if anyone is going to design and develope a
kind of rules server or something like that, you
need a way to access rules (packages or rulebases) automaticaly.
Thx.
PD: This is a repeated reply because the older cant get it to the
list because I forgot to change the extremly-large-work-signature
On 07-06-2007, at 14:24, Fernando Meyer wrote:
You MUST use the org.drools.util.BinaryRuleBaseLoader to load a
precompiled binary package into your RE classes.
public void testLoadAndExecBinary() throws Exception {
Person p = new Person();
BinaryRuleBaseLoader loader = new BinaryRuleBaseLoader();
loader.addPackage( this.getClass().getResourceAsStream( "/
RepoBinPackage.pkg" ) );
RuleBase rb = loader.getRuleBase();
StatelessSession sess = rb.newStatelessSession();
sess.execute( p );
assertEquals(42, p.getAge());
}
ps: im going to create a wiki entry for this.
Fernando Meyer
[EMAIL PROTECTED]
GPG: 5A6D 3374 B055 A513 9A02 A03B 3DB3 7485 D804 DDFB
On Jun 7, 2007, at 2:48 PM, philokratis wrote:
We need to load rule packages (snapshots) directly from the
repository, preferably from a jmx service in order
build a rulebase and cache the rulebase in JNDI.
How can we access a package snapshot directly from the repository ?
Is there another way besides downloading the package through http
request?
Michael, regarding the rulebase caching is the use of JNDI the
reccomended approach
What are the plans for BRMS regarding this part?
Thank you
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[rules-users] Problems with int and Integer inside Return Value and Predicate Expression
The Solicitud object has sumaMontoLCG and sumaMontoGarantia atts as
int (primitives).
Im using 3.0.6 and java 1.5
I have this simple rule:
rule "montos maximos y minimos"
salience 888
when
a: Actor(tipo :tipoActor == Actor.JefeOficina, max: limiteMaximo,
min: limiteMinimo)
s: Solicitud( sumaLCG: sumaMontoLCG < max, sumaGTIA:
sumaMontoGarantia -> ( (sumaLCG.intValue() - sumaGTIA.intValue()) <
min.intValue()) )
then
System.out.println("Suma LCG:"+sumaLCG);
System.out.println("Actor lim max:"+max);
System.out.println("Actor tipo:"+tipo);
end
Fire the rule shows me this error:
org.drools.RuntimeDroolsException:
java.lang.ArrayIndexOutOfBoundsException: 1
at org.drools.rule.PredicateConstraint.isAllowed(Unknown Source)
at org.drools.common.BetaNodeBinder.isAllowed(Unknown Source)
at org.drools.reteoo.TupleSource.attemptJoin(Unknown Source)
at org.drools.reteoo.JoinNode.assertTuple(Unknown Source)
at org.drools.reteoo.LeftInputAdapterNode.createAndAssertTuple
(Unknown Source)
at org.drools.reteoo.LeftInputAdapterNode.assertObject(Unknown Source)
at org.drools.reteoo.ObjectSource.propagateAssertObject(Unknown Source)
at org.drools.reteoo.AlphaNode.assertObject(Unknown Source)
at org.drools.reteoo.ObjectSource.propagateAssertObject(Unknown Source)
at org.drools.reteoo.ObjectTypeNode.assertObject(Unknown Source)
at org.drools.reteoo.Rete.assertObject(Unknown Source)
at org.drools.reteoo.ReteooRuleBase.assertObject(Unknown Source)
at org.drools.reteoo.ReteooWorkingMemory.doAssertObject(Unknown Source)
at org.drools.common.AbstractWorkingMemory.assertObject(Unknown Source)
at org.drools.common.AbstractWorkingMemory.assertObject(Unknown Source)
at
cl.bluesoft.jbrules.loader.solcred.SolcredRulesPoC.fireRulesSOLCRED
(SolcredRulesPoC.java:85)
at cl.bluesoft.jbrules.loader.solcred.SolcredRulesPoC.main
(SolcredRulesPoC.java:40)
Caused by: java.lang.ArrayIndexOutOfBoundsException: 1
at org.drools.reteoo.FactHandleList.get(Unknown Source)
at org.drools.reteoo.TupleKey.get(Unknown Source)
at org.drools.reteoo.ReteTuple.get(Unknown Source)
at org.drools.reteoo.ReteTuple.get(Unknown Source)
at
cl.bluesoft.jbrules.rules.solcred.Rule_montos_maximos_y_minimos_0Predica
te0Invoker.evaluate
(Rule_montos_maximos_y_minimos_0Predicate0Invoker.java:14)
... 17 more
When I change the column to:
s: Solicitud( sumaLCG: sumaMontoLCG < max, sumaGTIA:
sumaMontoGarantia -> ( (sumaLCG - sumaGTIA) < min) )
its shows this error:
org.drools.rule.InvalidRulePackage: Rule Compilation error The
operator - is undefined for the argument type(s) java.lang.Integer,
java.lang.Integer
at org.drools.rule.Package.checkValidity(Unknown Source)
at org.drools.common.AbstractRuleBase.addPackage(Unknown Source)
at cl.bluesoft.jbrules.loader.solcred.SolcredRulesPoC.readRule
(SolcredRulesPoC.java:60)
at cl.bluesoft.jbrules.loader.solcred.SolcredRulesPoC.main
(SolcredRulesPoC.java:36)
This happens in a predicate or in a value expression, so I cant use
this formula... What is wrong?
Thx.
Felipe Piccolini M.
[EMAIL PROTECTED]
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[rules-users] DSL not working on 3.1 M1
Hi, I dont know if this is for User or for developer list, but I'm having problems with dsl expanders on drl file. Using 3.1 M1 plugin and 3.1 M1 core (all with deps) a simple example using a .dsl expander file compile and fire rules, but doesnt activate any. The same example not using expander works fine (I have to put the drl code on drl file and comment the expander line on the drl file). Its seems that the expander is not working properly. Changing the project classpath to use 3.0.6 libs makes all works fine, the problem is I need to use some functionality I think is just working on 3.1. Thx. Felipe Piccolini M. [EMAIL PROTECTED] ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] (no subject)
Hi, I dont know if this is for User or for developer list, but Im having problems with dsl expanders on drl file. Using 3.1 M1 plugin and 3.1 M1 core (all with deps) a simple example using a .dsl expander file compile and fire rules, but doesnt activate any. The same example not using expander works fine (I have to put the drl code on drl file and comment the expander line on the drl file). Its seems that the expander is not working properly. Thx. Felipe Piccolini M. [EMAIL PROTECTED] ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] Help writing LHS
Hello,
Im working in 2 rules and I'm having some problems writing the LHS
in a way the final
user can understand reading the drl (which uses a dsl expander).
The first rule is something like this:
Two facts: User and Form.
The rule is something like this:
'If the User is "User1" or "User2" or "User3" then The Form can
be approved if the amount of Credit1(defined in the Form)
is less than the User's maximum limit and the amount of
Guarantee (another amount of money) is less than User's minum limit"
I try to write it in a DSL:
A user the type User1,User2 or User3=u: User(type=User1|=User2|
=User3, max: maximumLimit, min: minimumLimit)
A Form for a credit=f : Form(cred: creditAmount, guar:
guaranteeAmount)
The Credit amount is less than User's Maximum Limit=cred < max
The Guarantee amount must be less than the User's Minimum
Limit=guar < min
But it doesn't work, I know it shoudnt work, but How can I write the
sentences in a way that can be used all in a rule, but also can be
readed separatedly?
The other rule I need help is something like this:
Having a List with some objects (lets say Credit is the object
with name, value and period as attributes)
"The List only contains Credits of this types: {Credit
(type=1,period=36, value=80) or Credit(type=2,period=48,value=100)
or ... etc, etc)"
How can I write the LHS of something like this if the fact is
the List of Credits?
I have Edson's words in my mind all the time: "eval is EVIL"
So the question is how can I do this without eval and using DSL
templates
so the templates can be readed properly from a human been?
Thanks for your help.
Felipe Piccolini M.
[EMAIL PROTECTED]
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Re: [rules-users] Changing rules at runtime
We are working on a solution using Topic JMS with spring, so we build a RuleBase and publish it as a 'post' with one topic, while the 'client' which is a WorkingMemoryFactory is listening on the topic all the time (configurable) so when the topic is refreshed, the client automagicaly refresh his own -singleton- RuleBase and (as is a Factory) is able to returns a newWorkingMemory from that RuleBase. We will send the code with examples in few weeks, I think. Good Luck. On 21-03-2007, at 9:01, jdepaul wrote: I don't have an application in PROD yet, I'm just working on a Proof of Concept with Drools 3.1.0M1 and Spring 1.2.8 but I have a similar situation as you in that I'll need to periodically reload Rules without restarting the App. This is what I've discover will work for us - not sure in your case, but here it is: I have objects called EventRuleBase objects which basically wrap RuleBase objects. Each instance of EventRuleBase object is tied to a resource (*.drl file on the file system for now, but in the future it may come from a DB). I then have a notion of RuleBaseManager object which is in charge of managing the collection of EventRuleBase objects. I use Spring to initialize and load all EventRuleBase objects individually and then register themselves with the RuleBaseManager object which records their instances in HashMap. The RuleBaseManager implements several methods: getWorkingMemory(...) and ruleChange(newEventRuleBase). The RuleBaseManager is a Singleton and the EventRuleBase objects are NOT singletons In my testing, I've discovered that when it's time to reload rules (some type of triggering mechanism must invoke this), I can ask Spring for a new instance of the EventRuleBase object by name (i.e. appContext.getBean(LOAD_rulebase) - it will fetch a brand new object which it will automatically reload from the underlying Resource (on the filesystem) - note that "singleton=false" bean configuration in Spring config is key for this. I can then hand the new instance of the new EventRuleBase object to the ruleChange(newEventRuleBase) method which it will then synchronize and 'swap-in' the new object into the HashMap it maintains. The clients that invoke subsequent getNewWorkingMemory () methods on the new EventRuleBase object will then start getting references to new object with NEW rules. I figured I'll need to protect the integrity of the hashmap using the JDK 1.5 implementation of ConcurrentHashMap which is very much possible using Spring 2.x - check out the documentation. Hope this helps. Regards - James' Carlos Henriquez wrote: We want to change rules at runtime without redeploying the whole application. -- View this message in context: http://www.nabble.com/Changing-rules- at-runtime-tf3392187.html#a9593359 Sent from the drools - user mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users Felipe Piccolini M. [EMAIL PROTECTED] ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Question on data safety and threading...
jdepaul, We are implementing a diferent solution for that. We are using a Topic JMS using spring, so we have build diferent RuleBases and publish them in this topicJMS as a post, then a WorkingMemoryFactory has a listener for changes on the topics, and when that happens the factory refresh the singleton reference to the RuleBase (sincronyzed) and provides a newWorkingMemory... no maps, one factory for each rulebase (we have them identified) and the diferent ruleBases are managed by diferent topic-beans-names in the spring configuration. I guess it can be managed by maps too. We will send the code in 3 weeks when we have it tested and operative. Good luck!. On 13-03-2007, at 19:32, Michael Neale wrote: in your case - as you are swapping out the RuleBase - I woudl suggest locking or syncing things when swapping - not sure how to do that given that spring is in control. Also, i would suggest you use RuleBase#newWorkingMemory(false) so that it doesn't keep a weakhashmap around pointint back to the working memories, as you don't need it (it will mean less big GC pauses under heavy load in your case). Michael. On 3/13/07, jdepaul <[EMAIL PROTECTED]> wrote: I know the threading topic has been discussed quite extensively, but I still need some guidance in the following case: My application has a RuleManager object that maintains references to many RuleBase objects in a HashMap. I'm using Spring Framework to wire the bean relationships together. The RulesManager is typically busy servicing client requests for instances of WorkingMemory objects which it fetches from the individual RuleBase objects it maintains in its Hash ( wm.newWorkingMemory() ). >From time to time, I'll need RulesManager to reaload the rules that are associated with the individual RuleBase object - for that, I'm going to create a new instance of the RuleBase object and then I need an efficient and safe way to 'swap' this new RuleBase object for the old object reference in the RulesManager's map. My question is: should I synchronize the getWorkingMemory(..) method inside my RulesManager object that uses the hashmap, AND also synchronize the code that does the object swap - would that be sufficient?! How would I do it using Collections.synchronizedMap() - remember that I don't have that much control over the creation of the Map since Spring controls that part of populating hashmap at startup. The critical factors for me are speed and efficiency in servicing regular client requests for WorkingMemory - ideally, I'd synchronize only the method that does the object swap, but I'm sure that may have some bad consequences... though as long as I can avoid the race condition I could probably live with it. Thanks in advance for ideas - -- View this message in context: http://www.nabble.com/Question-on- data-safety-and-threading...-tf3396050.html#a9454823 Sent from the drools - user 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 mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users Felipe Piccolini M. [EMAIL PROTECTED] ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Detecting partial matches
You can use EventListener to check Facts asserted. maybe that is not what your looking for, but its good to know that you can check events inside the rule engine execution... On 11-01-2007, at 13:08, Kevin J. Schmidt wrote: I'm using JBoss Rules 3.0.5 and want to know if there is a way to detect when a rule partially matches. For example, let's say I have the following rule: rule "My Rule" no-loop true when myo1: MyObject(id==12) myo2: MyObject(id==45) then // do something with myo1 and myo2 end This rule is looking for one MyObject with an id of 12 and another MyObject with an id of 45. A MyObject with id 12 may come into working memory before the one with an id of 45. Is there a way, either in Java code or in the rules file itself, to know when the rule is partially matched? Thanks, -- Kevin J. Schmidt <[EMAIL PROTECTED]> A wise and frugal government, which shall leave men free to regulate their own pursuits of industry and improvement, and shall not take from the mouth of labor and bread it has earned - this is the sum of good government. --Thomas Jefferson ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users Felipe Piccolini M. [EMAIL PROTECTED] ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Re: [drools-user] Is the maling list active?
Yes... I can here you... omg I felt myself so lonely... :( Im glad to here u guys :) On 05-01-2007, at 17:52, Michael Neale wrote: Echooo. this list should be active. Can you hear me ?? ;) On 1/5/07, Felipe Piccolini <[EMAIL PROTECTED] > wrote: I have been notified about unsubscription to the mailing list and I didnt make it... Also received a subscription email to the rules-users/ [EMAIL PROTECTED] list all cool until now... but I havent received any mail from anybody today (almost) so I presume that the list is inactive? Anyone can say something?... I cant hear you guys :) Felipe Piccolini M. [EMAIL PROTECTED] ___ rules-users mailing list [EMAIL PROTECTED] https://lists.jboss.org/mailman/listinfo/rules-users Felipe Piccolini M. [EMAIL PROTECTED] ___ rules-users mailing list [EMAIL PROTECTED] https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] Is the maling list active?
I have been notified about unsubscription to the mailing list and I didnt make it... Also received a subscription email to the rules-users/ [EMAIL PROTECTED] list all cool until now... but I havent received any mail from anybody today (almost) so I presume that the list is inactive? Anyone can say something?... I cant hear you guys :) Felipe Piccolini M. [EMAIL PROTECTED] ___ rules-users mailing list [EMAIL PROTECTED] https://lists.jboss.org/mailman/listinfo/rules-users
