SAP BRM - execution of different rules one after another

[Former Member]

Hi at all,

I want to set up rules which get information from a rule fact named 'SpecParameter', process it and store it in the rule fact 'LocalParameter'.

So I have the following rule facts:

'SpecParameter' with the attributes 'name', 'description', 'unit', 'lsl' and 'usl',

'LocalParameter' with the attributes 'name', 'description', 'unit', 'lsl' and 'usl',

Additionally I have a rule fact named 'RuleFact' to store information about the execution of the rules itself:
'RuleFact' with the attributes 'ruleName', 'amountChecked' and 'amountExecuted'.

Before I process the attributes 'lsl' and 'usl' I want to fill the attribute 'unit' of the 'LocalParameter' if this attribute is empty.

Because there are special 'SpecParameter' and 'LocalParameter' identified by the name, I created three rules corresponding to these names:

Unit_RES,
Unit_RRG1 and

Unit_RRG2

So what I want is the following:

First execute the rule Unit_RES then Unit_RRG1 and then Unit_RRG2, every rule with the possibility of multiple execution.

For that goal I have created a rule flow in which the three single rules are lined up.

For every single rule I set the property loop and list the three different input objects.

But I got the following result:

<ruleFacts>

        <ruleName>Units_RES</ruleName>

        <amountChecked>63</amountChecked>

        <amountExecuted>2</amountExecuted>

</ruleFacts>

<ruleFacts>

        <ruleName>Units_RRG1</ruleName>

        <amountChecked>0</amountChecked>

        <amountExecuted>0</amountExecuted>

</ruleFacts>

<ruleFacts>

        <ruleName>Units_RRG2</ruleName>

        <amountChecked>0</amountChecked>

        <amountExecuted>0</amountExecuted>

</ruleFacts>

The exemplary rule for Unit_RES is as follow:

IF

{

    {

        RuleFact.getRuleName  Equals  Units_RES  

        and  RuleFact.increaseAmountChecked  Equals  true  

    }

    and

    {

        SpecParameter.getName  Equals  RES  

        and  FunctionsUtil.checkIfStringIsEmpty (   SpecParameter.getUnit   )  Equals  false  

    }

    and

    {

        FunctionsUtil.match (   RES.*   ,   LocalParameter.getName   )  Equals  true   

        and  FunctionsUtil.checkIfStringIsEmpty (   LocalParameter.getUnit   )  Equals  true  

    }

}

THEN

Execute :: FunctionsUtil.logMessageAsInfoUnsecure ( Rule Units_RES was fired. (A unit of a localParameter was set.)   )  

Execute :: RuleFact.increaseAmountExecuted  

Execute :: LocalParameter.setUnit ( SpecParameter.getUnit   )  

My Question is:
Why is only the first listed rule (in the rule flow) checked and executed and the other two rules are even never be checked.

Falk

[Former Member]

Somehow when I use a rule flow to invoke the three rules one after another only one rule is checked and executed.

When I put all three rules into a rule set and invoke these rules from an external direct call by 'ruleEngine.invokeRuleset(PROJECT_NAME, RULE_SET_NAME, inputObjects)' everything works as expected.

So my conclution is:
If I can not get the version with the rule flow to work (or someone give me a hint), I have to call the rule engine several times with different rule sets to reach the goal of invoking groups of rules one after another.

Falk