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using if statement in a rule ? [message #892742]

Fri, 29 June 2012 09:05

Kosala Yapa
Messages: 133
Registered: September 2010

Senior Member

rule rule_getDevice{
from
a: source!DeviceItem
to
p:target!Device(
name <- a.Name,
s7DeviceReference<-a.DeviceReference,
isSelectedWithinStep7<-a.IsSelected,
if (a.IsSelected = 'true'){
HeadModule<-a.ModuleList.ModuleItem->select(mi|mi.getSlotValue()='0')->collect(e|thisModule.rule_getHeadModule(e))->first();
Module<-a.ModuleList.ModuleItem->select(mi|mi.getSlotValue()<>'0')->sortedBy(mi|mi.getSlotValue().toInteger())->collect(e|thisModule.rule_getModule(e));
}
)
}

syntax error: no viable alternative at input.

can someone help me to resolve this issue?

Thanks in advance.
Kosala

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Re: using if statement in a rule ? [message #893343 is a reply to message #892742]

Tue, 03 July 2012 12:00

Fernanda R.F.
Messages: 64
Registered: May 2012

Member

Hi,

I'm not really sure about it, but I think isn't possible to use if condition into rules.
You will need to do a helper and then call it in the rule.

Example:


helper x1 (value: Integer): Boolean =

if (value = 1) then
 true
else
 false;


rule xxx {

from a: input!bla

to b: output!bla {

bool <- a.x1(2);

}

I hope it help you.

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