[rules-users] Arrays help

[Anstis, Michael (M.)]

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-using-
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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