[rules-users] Arrays help

[Bhattacharya, Sougata]

Yes that's the simple one, but I can't send the NameValue, I will send
only the LineItem

 

________________________________

From: rules-users-bounces at lists.jboss.org
[mailto:rules-users-bounces at lists.jboss.org] On Behalf Of Anstis,
Michael (M.)
Sent: Wednesday, October 03, 2007 5:36 PM
To: Rules Users List
Subject: RE: [rules-users] Arrays help

 

I forgot to mention, this assumes you want to maintain the
relationships. If you're not interested in these but merely want to
process all NameValue objects then a simple rule works fine:-

 

rule "don't worry about preserving relationships"

    when

        $n : NameValue ( )

    then

        ...

end

 

Simply assert all NameValue objects.

	 

	
________________________________


	From: Anstis, Michael (M.) 
	Sent: 03 October 2007 12:48
	To: 'Rules Users List'
	Subject: RE: [rules-users] Arrays help

	There are a number of ways...

	 

	Java dialect [requires LineItem, Parameter and NameValue to be
asserted into working memory]

	 

	rule "a - requires object model change for parent property"

	    when

	        $l : LineItem( )

	        $p : Parameter ( parent == $l )

	        $n : NameValue( parent == $p )

	    then

	        ...

	end

	 

	rule "b"

	    when

	        $n : NameValue( )

	        $p : Parameter ( nameValues contains $n )

	        $l : LineItem( parameters contains $p )

	    then

	        ...

	end

	 

	MVEL dialect

	 

	rule "c"

	    dialect mvel

	    when

	        $n :
my-mvel-syntax-lets-me-down-but-I-know-you-can-traverse-object-graphs-us
ing-it

	    then

	        ...

	end

	 

		 

		
________________________________


		From: rules-users-bounces at lists.jboss.org
[mailto:rules-users-bounces at lists.jboss.org] On Behalf Of Bhattacharya,
Sougata
		Sent: 03 October 2007 12:37
		To: Rules Users List
		Subject: [rules-users] Arrays help

		Hi All,

		  I have a object graph like this

		LineItem has array of Parameter and each Parameter has
array of  NameValue and Namevalue object has name and value.

		Now I have LineItem object in working memory, how to
test the value of each value of NameValue object.

		 

		LineItem-->getParameters() returns Parameter[]

		Parameter->getNameValueArray() return NameValue[]

		Each NameValue has name and value attribute

		Any help?

		 

		Ta

		Sougata

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