Re: [rules-users] Rule template shortcut needed
On 18 August 2010 13:31, djb <dbrownell83(a)hotmail.com> wrote:
Hi there,
My question is related to the ability to remove criterion in a rule template
by a cunning commenting trick so that if the variable @{VAR} is blank, the
line will be blank. Wolfgang wrote the code, I believe.
Not true, if you mean the template-+spreadsheet rule expansion code.
But I did write the classes for the instantiation of templates where
parameters come from Beans or Maps.
I've got a situation where I've got DB rows where i've got:
TYPE | CODE | TYPE2 | CODE2_FROM | CODE2_TO
there are 17 types. So it lets us have rules like
Type U code 123 cannot be charged with Type V codes 234 to 236.
I need the rules to compare the correct property, but I don't want to lose
the advantage of the RETE algorithm by using a getValue("type1") function.
I see one solution:
2. Make a template with 17 + 17 + 17 = 51 columns, where each one uses the
// @{VAR} trick.
Notice that *any* part of a template can be a formal parameter. So a line could
also be s.th. like
@{CLASS} ( @{FIELD} == @{VALUE} )
-W
Is there a better way? Or, should I just do getValue("type")?
Thanks
Daniel
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