Re: [rules-users] Function call in LHS

2012-04-18 Thread San 
Hi 

I am trying to cal a local function getMaturityAge()  in the decision table
condition column like 

RuleTable MaturityAge Validation
CONDITION   
ACTION 
pp:PremiumCalculatorFormBean
getMaturityAge() $1 
System.out.println(invalid maturity age); 
Premium Payment Term Print out
message? 
70 
X 

The method is defined localy using functions key word. 
And moreover whenever I trying to pass pp as the argument to my functions,
its not able to find pp. I am getting  cud not parse knowledge error. 


can anyone pz help me out.

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Re: [rules-users] Function call from LHS in Drools

2011-01-18 Thread Mohod, Akash 
Thanks a lot Wolfgang.

Regards,
Akash


From: rules-users-boun...@lists.jboss.org 
[mailto:rules-users-boun...@lists.jboss.org] On Behalf Of Wolfgang Laun
Sent: Monday, January 17, 2011 9:27 PM
To: Rules Users List
Subject: Re: [rules-users] Function call from LHS in Drools

when
System ($users: users)
$user : User () from $users
eval ( SuperUser.equals( HelperFunction.getUserType($user) ) )

You just cannot bind the result of a method/function call to a variable. Inside 
eval, you are in Java country, so don't use ==.

-W

2011/1/17 Mohod, Akash 
akash.mo...@morganstanley.commailto:akash.mo...@morganstanley.com
Hi,

I want to do something like this in my rule : -

when
System ($users: users)
$user : User () from $users
$userType : HelperFunction.getUserType($user)
eval($userType == SuperUser)
then
System.out.println( User Type is  + $userType);
end

The idea is I want to get the type of user using a static function call in the 
LHS. Is it possible to do so in the LHS.
I am using Drools 5.1 .

Regards,
Akash




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[rules-users] Function call from LHS in Drools

2011-01-17 Thread Mohod, Akash 
Hi,

I want to do something like this in my rule : -

when
System ($users: users)
$user : User () from $users
$userType : HelperFunction.getUserType($user)
eval($userType == SuperUser)
then
System.out.println( User Type is  + $userType);
end

The idea is I want to get the type of user using a static function call in the 
LHS. Is it possible to do so in the LHS.
I am using Drools 5.1 .

Regards,
Akash




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within the meaning of Section 975 of the Dodd-Frank Wall Street Reform and 
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please destroy all electronic and paper copies and notify the sender 
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Re: [rules-users] Function call from LHS in Drools

2011-01-17 Thread Wolfgang Laun 
when

System ($users: users)

$user : User () from $users

eval ( “SuperUser”.equals( *
HelperFunction.getUserType($user)* ) )


You just cannot bind the result of a method/function call to a variable.
Inside eval, you are in Java country, so don't use ==.


-W


2011/1/17 Mohod, Akash akash.mo...@morganstanley.com

  Hi,



 I want to do something like this in my rule : -



 when

 System ($users: users)

 $user : User () from $users

 *$userType : HelperFunction.getUserType($user)*

 eval($userType == “SuperUser”)

 then

 System.out.println(“ User Type is ” + $userType);

 end



 The idea is I want to get the type of user using a static function call in
 the LHS. Is it possible to do so in the LHS.

 I am using Drools 5.1 .



 Regards,

 Akash






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  NOTICE: Morgan Stanley is not acting as a municipal advisor and the
 opinions or views contained herein are not intended to be, and do not
 constitute, advice within the meaning of Section 975 of the Dodd-Frank Wall
 Street Reform and Consumer Protection Act. If you have received this
 communication in error, please destroy all electronic and paper copies and
 notify the sender immediately. Mistransmission is not intended to waive
 confidentiality or privilege. Morgan Stanley reserves the right, to the
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 This message is subject to terms available at the following link:
 http://www.morganstanley.com/disclaimers. If you cannot access these
 links, please notify us by reply message and we will send the contents to
 you. By messaging with Morgan Stanley you consent to the foregoing.

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[rules-users] Function call in LHS

2008-07-11 Thread BINET JEAN-BAPTISTE 
Hello,

I am new to Drools. I have downloaded and installed Drools 4.0.7.
After having read the documentation, I saw that it is possible to create
function in the .drl file.
I succeed in creating a function, calling it in the LHS with eval()
instruction or in the RHS.
But, is it possible to call a function in the LHS out of an eval() ? For
example, I would like to use
a pattern such as : 
$tmp : MyClass( name == MyFunction() )

Thanks in advance.

Regards.

JB
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Re: [rules-users] Function call in LHS

2008-07-11 Thread Mark Proctor 

only inside an eval or return value.

Mark
BINET JEAN-BAPTISTE wrote:


Hello,

I am new to Drools. I have downloaded and installed Drools 4.0.7.
After having read the documentation, I saw that it is possible to 
create function in the .drl file.
I succeed in creating a function, calling it in the LHS with eval() 
instruction or in the RHS.
But, is it possible to call a function in the LHS out of an eval() ? 
For example, I would like to use

a pattern such as :
$tmp : MyClass( name == MyFunction() )

Thanks in advance.

Regards.

JB



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Re: [rules-users] function call

2007-08-29 Thread hypnosat7 

I try and change the dialect but it doesn't work

rule Your First Rule
dialect mvel
when

then
 
drools.rule.dialect=java
System.out.println(drools.getRule().getDialect());
System.out.println(ok+func());


end

the package still invalid :
* (1,6) unable to resolve method using strict-mode:
java.lang.Object.func(...)
* (1,6) unable to resolve method using strict-mode:
java.lang.Object.func(...)



hypnosat7 wrote:
 
 Hi,
 
   I have a simple rule :
 
 function String isTrue() {
   return true;
 }
 
 rule new rule
 dialect mvel
   when
   eval(true)
   then
   System.out.println(passe+isTrue());
 end
 
 But it seems impossible to call function's :
 
 org.mvel.PropertyAccessException: failed to access property:
 System.out.println(passe+isTrue()) in: null
   at
 org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileGetChain(ReflectiveAccessorOptimizer.java:137)
   at
 org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.optimizeAccessor(ReflectiveAccessorOptimizer.java:96)
   at org.mvel.ASTNode.getReducedValueAccelerated(ASTNode.java:194)
   at org.mvel.MVELRuntime.execute(MVELRuntime.java:87)
   at org.mvel.MVEL.executeDebugger(MVEL.java:327)
   at 
 org.drools.base.mvel.MVELConsequence.evaluate(MVELConsequence.java:43)
   at 
 org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:545)
   at org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:509)
   at
 org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:430)
   at
 org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:392)
   at mcmipih.rules.demo.service.TestDraft.main(TestDraft.java:37)
 Caused by: org.mvel.PropertyAccessException: null pointer exception in
 property: isTrue()
   at
 org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileGetChain(ReflectiveAccessorOptimizer.java:143)
   at
 org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.optimizeAccessor(ReflectiveAccessorOptimizer.java:96)
   at org.mvel.ASTNode.getReducedValueAccelerated(ASTNode.java:194)
   at
 org.mvel.ast.BinaryOperation.getReducedValueAccelerated(BinaryOperation.java:20)
   at org.mvel.MVELRuntime.execute(MVELRuntime.java:87)
   at org.mvel.CompiledExpression.getValue(CompiledExpression.java:98)
   at
 org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.getMethod(ReflectiveAccessorOptimizer.java:421)
   at
 org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileGetChain(ReflectiveAccessorOptimizer.java:109)
   ... 10 more
 Caused by: java.lang.NullPointerException
   at
 org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.getMethod(ReflectiveAccessorOptimizer.java:429)
   at
 org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileGetChain(ReflectiveAccessorOptimizer.java:109)
   ... 17 more
 org.drools.spi.ConsequenceException: org.mvel.PropertyAccessException:
 failed to access property: System.out.println(passe+isTrue()) in:
 null
   at 
 org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:549)
   at org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:509)
   at
 org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:430)
   at
 org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:392)
   at mcmipih.rules.demo.service.TestDraft.main(TestDraft.java:37)
 Caused by: org.mvel.PropertyAccessException: failed to access property:
 System.out.println(passe+isTrue()) in: null
   at
 org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileGetChain(ReflectiveAccessorOptimizer.java:137)
   at
 org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.optimizeAccessor(ReflectiveAccessorOptimizer.java:96)
   at org.mvel.ASTNode.getReducedValueAccelerated(ASTNode.java:194)
   at org.mvel.MVELRuntime.execute(MVELRuntime.java:87)
   at org.mvel.MVEL.executeDebugger(MVEL.java:327)
   at 
 org.drools.base.mvel.MVELConsequence.evaluate(MVELConsequence.java:43)
   at 
 org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:545)
   ... 4 more
 Caused by: org.mvel.PropertyAccessException: null pointer exception in
 property: isTrue()
   at
 org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileGetChain(ReflectiveAccessorOptimizer.java:143)
   at
 org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.optimizeAccessor(ReflectiveAccessorOptimizer.java:96)
   at org.mvel.ASTNode.getReducedValueAccelerated(ASTNode.java:194)
   at
 org.mvel.ast.BinaryOperation.getReducedValueAccelerated(BinaryOperation.java:20)
   at org.mvel.MVELRuntime.execute(MVELRuntime.java:87)
   at

Re: [rules-users] function call

2007-08-29 Thread Mark Proctor 
unfortunately not, due to the build life cycle and classpath issues mvel 
cannot call functions defined in the DRL, although it can call normal 
static methods of existing classes ok.


Mark
Edson Tirelli wrote:


   I believe this problem is already fixed in trunk. You can download 
latest build from here:


http://cruisecontrol.jboss.com/cc/artifacts/jboss-rules 
http://cruisecontrol.jboss.com/cc/artifacts/jboss-rules


[]s
Edson

2007/8/29, hypnosat7 [EMAIL PROTECTED] mailto:[EMAIL PROTECTED]:


I try and change the dialect but it doesn't work

rule Your First Rule
dialect mvel
when

then

drools.rule.dialect=java
System.out.println(drools.getRule().getDialect());
System.out.println(ok+func());


end

the package still invalid :
* (1,6) unable to resolve method using strict-mode:
java.lang.Object.func(...)
* (1,6) unable to resolve method using strict-mode:
java.lang.Object.func(...)



hypnosat7 wrote:

 Hi,

   I have a simple rule :

 function String isTrue() {
   return true;
 }

 rule new rule
 dialect mvel
   when
   eval(true)
   then
   System.out.println (passe+isTrue());
 end

 But it seems impossible to call function's :

 org.mvel.PropertyAccessException: failed to access property:
 System.out.println(passe+isTrue()) in: null
   at


org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileGetChain(ReflectiveAccessorOptimizer.java:137)
   at

org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.optimizeAccessor
(ReflectiveAccessorOptimizer.java:96)
   at
org.mvel.ASTNode.getReducedValueAccelerated(ASTNode.java:194)
   at org.mvel.MVELRuntime.execute(MVELRuntime.java:87)
   at org.mvel.MVEL.executeDebugger (MVEL.java:327)
   at
org.drools.base.mvel.MVELConsequence.evaluate(MVELConsequence.java:43)
   at
org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:545)
   at org.drools.common.DefaultAgenda.fireNextItem
(DefaultAgenda.java:509)
   at


org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:430)
   at


org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java
:392)
   at
mcmipih.rules.demo.service.TestDraft.main(TestDraft.java:37)
 Caused by: org.mvel.PropertyAccessException: null pointer
exception in
 property: isTrue()
   at

org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileGetChain
(ReflectiveAccessorOptimizer.java:143)
   at


org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.optimizeAccessor(ReflectiveAccessorOptimizer.java:96)
   at org.mvel.ASTNode.getReducedValueAccelerated
(ASTNode.java:194)
   at


org.mvel.ast.BinaryOperation.getReducedValueAccelerated(BinaryOperation.java:20)
   at org.mvel.MVELRuntime.execute(MVELRuntime.java:87)
   at org.mvel.CompiledExpression.getValue
(CompiledExpression.java:98)
   at


org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.getMethod(ReflectiveAccessorOptimizer.java:421)
   at

org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileGetChain
(ReflectiveAccessorOptimizer.java:109)
   ... 10 more
 Caused by: java.lang.NullPointerException
   at


org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.getMethod(ReflectiveAccessorOptimizer.java
:429)
   at


org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileGetChain(ReflectiveAccessorOptimizer.java:109)
   ... 17 more
 org.drools.spi.ConsequenceException:
org.mvel.PropertyAccessException :
 failed to access property:
System.out.println(passe+isTrue()) in:
 null
   at
org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:549)
   at
org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:509)
   at


org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:430)
   at
 org.drools.common.AbstractWorkingMemory.fireAllRules
(AbstractWorkingMemory.java:392)
   at
mcmipih.rules.demo.service.TestDraft.main(TestDraft.java:37)
 Caused by: org.mvel.PropertyAccessException: failed to access
property:
 System.out.println (passe+isTrue()) in: null
   at


org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileGetChain(ReflectiveAccessorOptimizer.java:137)
   at

org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.optimizeAccessor
(ReflectiveAccessorOptimizer.java:96)
   at

Re: [rules-users] function call

2007-08-29 Thread Edson Tirelli 
   Hi,

   Mark just told me there is a problem with MVEL calling functions... I
believe he is working on that...

[]s
Edson


2007/8/29, hypnosat7 [EMAIL PROTECTED]:


 I still have the same problem :

 * (1,6) unable to resolve method using strict-mode:
 java.lang.Object.func(...)
 * (1,6) unable to resolve method using strict-mode:
 java.lang.Object.func(...)
 package validity :false
 org.drools.rule.InvalidRulePackage: Unable to build expression for
 'consequence' '
 drools.rule.dialect=java
 System.out.println(drools.getRule().getDialect());
 System.out.println(ok+func());


 ' : [Rule name=Your First Rule, agendaGroup=MAIN, salience=0,
 no-loop=false]

 at org.drools.rule.Package.checkValidity(Package.java:416)
 at org.drools.common.AbstractRuleBase.addPackage(
 AbstractRuleBase.java:292)
 at mcmipih.rules.demo.service.TestDraft.main(TestDraft.java:34)


 my rule :

 rule Your First Rule
 dialect mvel
 when
 eval(true)
 then

 drools.rule.dialect=java
 System.out.println(drools.getRule().getDialect());
 System.out.println(ok+func());


 end



 Edson Tirelli-3 wrote:
 
 I believe this problem is already fixed in trunk. You can download
  latest
  build from here:
 
  http://cruisecontrol.jboss.com/cc/artifacts/jboss-rules
 
  []s
  Edson
 
  2007/8/29, hypnosat7 [EMAIL PROTECTED]:
 
 
  I try and change the dialect but it doesn't work
 
  rule Your First Rule
  dialect mvel
  when
 
  then
 
  drools.rule.dialect=java
  System.out.println(drools.getRule().getDialect());
  System.out.println(ok+func());
 
 
  end
 
  the package still invalid :
  * (1,6) unable to resolve method using strict-mode:
  java.lang.Object.func(...)
  * (1,6) unable to resolve method using strict-mode:
  java.lang.Object.func(...)
 
 
 
  hypnosat7 wrote:
  
   Hi,
  
 I have a simple rule :
  
   function String isTrue() {
 return true;
   }
  
   rule new rule
   dialect mvel
 when
 eval(true)
 then
 System.out.println(passe+isTrue());
   end
  
   But it seems impossible to call function's :
  
   org.mvel.PropertyAccessException: failed to access property:
   System.out.println(passe+isTrue()) in: null
 at
  
 
 org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileGetChain(
  ReflectiveAccessorOptimizer.java:137)
 at
  
 
 org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.optimizeAccessor
  (ReflectiveAccessorOptimizer.java:96)
 at org.mvel.ASTNode.getReducedValueAccelerated(ASTNode.java
 :194)
 at org.mvel.MVELRuntime.execute(MVELRuntime.java:87)
 at org.mvel.MVEL.executeDebugger(MVEL.java:327)
 at org.drools.base.mvel.MVELConsequence.evaluate(
  MVELConsequence.java:43)
 at org.drools.common.DefaultAgenda.fireActivation(
  DefaultAgenda.java:545)
 at
  org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java
  :509)
 at
   org.drools.common.AbstractWorkingMemory.fireAllRules(
  AbstractWorkingMemory.java:430)
 at
   org.drools.common.AbstractWorkingMemory.fireAllRules(
  AbstractWorkingMemory.java:392)
 at mcmipih.rules.demo.service.TestDraft.main(TestDraft.java:37)
   Caused by: org.mvel.PropertyAccessException: null pointer exception
 in
   property: isTrue()
 at
  
 
 org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileGetChain(
  ReflectiveAccessorOptimizer.java:143)
 at
  
 
 org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.optimizeAccessor
  (ReflectiveAccessorOptimizer.java:96)
 at org.mvel.ASTNode.getReducedValueAccelerated(ASTNode.java
 :194)
 at
   org.mvel.ast.BinaryOperation.getReducedValueAccelerated(
  BinaryOperation.java:20)
 at org.mvel.MVELRuntime.execute(MVELRuntime.java:87)
 at org.mvel.CompiledExpression.getValue(CompiledExpression.java
  :98)
 at
   org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.getMethod(
  ReflectiveAccessorOptimizer.java:421)
 at
  
 
 org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileGetChain(
  ReflectiveAccessorOptimizer.java:109)
 ... 10 more
   Caused by: java.lang.NullPointerException
 at
   org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.getMethod(
  ReflectiveAccessorOptimizer.java:429)
 at
  
 
 org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileGetChain(
  ReflectiveAccessorOptimizer.java:109)
 ... 17 more
   org.drools.spi.ConsequenceException: org.mvel.PropertyAccessException
 :
   failed to access property: System.out.println(passe+isTrue())
 in:
   null
 at org.drools.common.DefaultAgenda.fireActivation(
  DefaultAgenda.java:549)
 at

[rules-users] Function Call in LHS

2007-08-17 Thread Rafael Alcemar 
Hello guys! This is my first question for the list. I've defined a function
in my DRL file to evaluate if a user can do a specific operation in my
system. This function returns a boolean result. My question is if I can use
this function in the test of LHS.

For example:

rule Cliente pode alugar
when
eval(teste)
then
System.out.println(XX);
 end


function boolean teste( ) {
return true;
}


Please, if anybody has some help, send me.

Thanks!
Rafael Alcemar
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Re: [rules-users] Function Call in LHS

2007-08-17 Thread Kris Verlaenen 
You should also use the parentheses for functions, as in normal Java code:

eval ( teste() )

Of course you can add parameters etc. to your functions like this as well.

Kris

  - Original Message - 
  From: Rafael Alcemar 
  To: rules-users@lists.jboss.org 
  Sent: Friday, August 17, 2007 4:02 PM
  Subject: [rules-users] Function Call in LHS


  Hello guys! This is my first question for the list. I've defined a function 
in my DRL file to evaluate if a user can do a specific operation in my system. 
This function returns a boolean result. My question is if I can use this 
function in the test of LHS. 

  For example:

  rule Cliente pode alugar
  when
  eval(teste)
  then
  System.out.println(XX);
   end


  function boolean teste( ) {
  return true; 
  }


  Please, if anybody has some help, send me.

  Thanks!
  Rafael Alcemar



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