[rules-users] ClassCastException when comparing date type with literal

[Zeke]

It seems not work.
When I try
*$msg : Message($date : date)
Order ( $date > "Mar-01-2012" )*
I meet error "Unable to create Field Extractor for '$date' of
'[ClassObjectType class=org.drools.examples.HelloWorldExample$Second]' in
rule 'default' : [Rule name=default, agendaGroup=MAIN, salience=0,
no-loop=false]"

When I try
*$msg : Message($date : date)
eval ( $date > "Mar-01-2012" )*
If the dialect is "java", I meet error "Rule Compilation error : [Rule
name=default, agendaGroup=MAIN, salience=0, no-loop=false]
    org/drools/examples/test/Rule_default_0.java (8:354) : The operator >
is undefined for the argument type(s) Date, String"
If the dialect is "mvel", I meet the same ClassCastException.

On 29 March 2012 22:28, FrankVhh <frank.vanhoenshoven at agserv.eu> wrote:

> This may sound a bit rude, but... why would you want to do such a thing?
>
> If there is a constraint on the message, then why not put that constraint
> in
> the message structure?
>
> Btw, I think it would work by using eval($date < "...") but see no use for
> it either.
>
>
> Joe Zendle wrote
> >
> > did you try:
> >
> >  *$msg : Message($date : date)
> > Order ( $date > "Mar-01-2012" )*
> >
> >
> >
> > 2012/3/29 Zeke &lt;xanadu860122@&gt;
> >
> >> Hi, guys:
> >>   I meet a strange issue and need your help again... I am using Drools
> >> 4.0.7.
> >>   When my rule condition is as *Message( date > "Mar-01-2012" )*,
> >> everything is OK. But if I change it to be as below:
> >>   *$msg : Message()
> >>   Order ( $msg.date > "Mar-01-2012" )*
> >>   I will meet "java.lang.String cannot be cast to java.util.Date"
> >> ClassCastException. "Order" is another fact. I attach the exception call
> >> stack. Please check it. It looks like a bug to me. Do we fix it in later
> >> release? If so, can you tell me which release contains the fix? Thanks!
> >>
> >> _______________________________________________
> >> rules-users mailing list
> >> rules-users at .jboss
> >> https://lists.jboss.org/mailman/listinfo/rules-users
> >>
> >>
> >
> > _______________________________________________
> > rules-users mailing list
> > rules-users at .jboss
> > https://lists.jboss.org/mailman/listinfo/rules-users
> >
>
>
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