I get $foo can't be resolved error for following rule. Some guidance is appreciated to reference $foo without error. Rule "Foo rule" when exists( $foo: Foo()) then System.out.println($foo); end Thanks in advance. -- View this message in context: http://www.nabble.com/error-when-referening-LHS-%3Eexists-block-var-in-RH... Sent from the drools - user mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users

That's makes Edson. Thank you. Is there way to to sort the facts collected using "collect" in LHS itself? I could not find any hint in the documentation. Edson Tirelli-3 wrote: > > That is expected behavior. > > This is because quantifier CEs like "exists", "not" and "forall" will > evaluate multiple facts at once. So, if your rule has 5 foos in the > working > memory, which one would you expect to print? > > If you want to print each of them, remove the "exists"... if you want > to > print all of them, use "collect" instead of "exists". > > []s > Edson > > 2009/2/17 techy <techluver007(a)gmail.com&gt; > >> >> I get $foo can't be resolved error for following rule. Some guidance is >> appreciated to reference $foo without error. >> >> Rule "Foo rule" >> when >> exists( $foo: Foo()) >> then >> System.out.println($foo); >> end >> >> Thanks in advance. >> -- >> View this message in context: >> http://www.nabble.com/error-when-referening-LHS-%3Eexists-block-var-in-RH... >> Sent from the drools - user mailing list archive at Nabble.com. >> >> _______________________________________________ >> rules-users mailing list >> rules-users(a)lists.jboss.org >> https://lists.jboss.org/mailman/listinfo/rules-users >> > > > > -- > Edson Tirelli > JBoss Drools Core Development > JBoss, a division of Red Hat @ www.jboss.com > > _______________________________________________ > rules-users mailing list > rules-users(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users > > -- View this message in context: http://www.nabble.com/error-when-referening-LHS-%3Eexists-block-var-in-RH... Sent from the drools - user mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users

I think I better more accurate info for my requirement. Is there way to get list of ( or single) Ticker that is close to given timeInMillSec and exact price value ? Class Male { long timeInMillsec; float price; String symbol } rule "Pseudo rule" when ArrayList() from collect( Ticker( price == 20.00 && timeInMillsec is close to 1000000 )) then //do conseq end Thanks. techy wrote: > > That's makes Edson. Thank you. > > Is there way to to sort the facts collected using "collect" in LHS itself? > I could not find any hint in the documentation. > > > > Edson Tirelli-3 wrote: >> >> That is expected behavior. >> >> This is because quantifier CEs like "exists", "not" and "forall" will >> evaluate multiple facts at once. So, if your rule has 5 foos in the >> working >> memory, which one would you expect to print? >> >> If you want to print each of them, remove the "exists"... if you want >> to >> print all of them, use "collect" instead of "exists". >> >> []s >> Edson >> >> 2009/2/17 techy <techluver007(a)gmail.com&gt; >> >>> >>> I get $foo can't be resolved error for following rule. Some guidance is >>> appreciated to reference $foo without error. >>> >>> Rule "Foo rule" >>> when >>> exists( $foo: Foo()) >>> then >>> System.out.println($foo); >>> end >>> >>> Thanks in advance. >>> -- >>> View this message in context: >>> http://www.nabble.com/error-when-referening-LHS-%3Eexists-block-var-in-RH... >>> Sent from the drools - user mailing list archive at Nabble.com. >>> >>> _______________________________________________ >>> rules-users mailing list >>> rules-users(a)lists.jboss.org >>> https://lists.jboss.org/mailman/listinfo/rules-users >>> >> >> >> >> -- >> Edson Tirelli >> JBoss Drools Core Development >> JBoss, a division of Red Hat @ www.jboss.com >> >> _______________________________________________ >> rules-users mailing list >> rules-users(a)lists.jboss.org >> https://lists.jboss.org/mailman/listinfo/rules-users >> >> > > -- View this message in context: http://www.nabble.com/error-when-referening-LHS-%3Eexists-block-var-in-RH... Sent from the drools - user mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users

Thanks Edson. 1.I use drools 4.X and. for following condition, drools gives compilation error. I'm not sure what i do wrong. Some working example would help. "ArrayList() from collect( Ticker( price == 20.00, timeInMillsec before[1ms,10m] 1000000 ))" 2.If I just to want to find "close" ticker for given timestamp without having "how close", I can think of writing some utility function in java class and use it in drools. any other idea here? Thanks again! Edson Tirelli-3 wrote: > > As long as you can say "how close" you want using an absolute > number, > it is possible: let's say you want all tickers that happened up to 10 > minutes before a given timestamp: > > rule "Pseudo rule" > when > ArrayList() from collect( Ticker( price == 20.00, timeInMillsec > before[1ms,10m] 1000000 )) > then > //do conseq > end > > You can replace your timestamp (1000000) above with a Date variable or > something like it. > > []s > Edson > > 2009/2/17 techy <techluver007(a)gmail.com&gt; > >> >> I think I better more accurate info for my requirement. >> >> Is there way to get list of ( or single) Ticker that is close to given >> timeInMillSec and exact price value ? >> >> Class Male >> { >> long timeInMillsec; >> float price; >> String symbol >> } >> >> rule "Pseudo rule" >> when >> ArrayList() from collect( Ticker( price == 20.00 && timeInMillsec is >> close >> to 1000000 )) >> then >> //do conseq >> end >> >> >> Thanks. >> >> >> techy wrote: >> > >> > That's makes Edson. Thank you. >> > >> > Is there way to to sort the facts collected using "collect" in LHS >> itself? >> > I could not find any hint in the documentation. >> > >> > >> > >> > Edson Tirelli-3 wrote: >> >> >> >> That is expected behavior. >> >> >> >> This is because quantifier CEs like "exists", "not" and "forall" >> will >> >> evaluate multiple facts at once. So, if your rule has 5 foos in the >> >> working >> >> memory, which one would you expect to print? >> >> >> >> If you want to print each of them, remove the "exists"... if you >> want >> >> to >> >> print all of them, use "collect" instead of "exists". >> >> >> >> []s >> >> Edson >> >> >> >> 2009/2/17 techy <techluver007(a)gmail.com&gt; >> >> >> >>> >> >>> I get $foo can't be resolved error for following rule. Some guidance >> is >> >>> appreciated to reference $foo without error. >> >>> >> >>> Rule "Foo rule" >> >>> when >> >>> exists( $foo: Foo()) >> >>> then >> >>> System.out.println($foo); >> >>> end >> >>> >> >>> Thanks in advance. >> >>> -- >> >>> View this message in context: >> >>> >> http://www.nabble.com/error-when-referening-LHS-%3Eexists-block-var-in-RH... >> >>> Sent from the drools - user mailing list archive at Nabble.com. >> >>> >> >>> _______________________________________________ >> >>> rules-users mailing list >> >>> rules-users(a)lists.jboss.org >> >>> https://lists.jboss.org/mailman/listinfo/rules-users >> >>> >> >> >> >> >> >> >> >> -- >> >> Edson Tirelli >> >> JBoss Drools Core Development >> >> JBoss, a division of Red Hat @ www.jboss.com >> >> >> >> _______________________________________________ >> >> rules-users mailing list >> >> rules-users(a)lists.jboss.org >> >> https://lists.jboss.org/mailman/listinfo/rules-users >> >> >> >> >> > >> > >> >> -- >> View this message in context: >> http://www.nabble.com/error-when-referening-LHS-%3Eexists-block-var-in-RH... >> Sent from the drools - user mailing list archive at Nabble.com. >> >> _______________________________________________ >> rules-users mailing list >> rules-users(a)lists.jboss.org >> https://lists.jboss.org/mailman/listinfo/rules-users >> > > > > -- > Edson Tirelli > JBoss Drools Core Development > JBoss, a division of Red Hat @ www.jboss.com > > _______________________________________________ > rules-users mailing list > rules-users(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users > > -- View this message in context: http://www.nabble.com/error-when-referening-LHS-%3Eexists-block-var-in-RH... Sent from the drools - user mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users