Re: [rules-users] sliding window problem

I think you have to follow the structure of accumulate function. Like */<result pattern>/*from accumulate( */<source pattern>/*, init( */<init code>/*), action( */<action code>/*), reverse( */<reverse code>/*), (optional) result( */<result expression>/*) ) examples are: when $order : Order() $total : Number( doubleValue > 100 ) from accumulate( OrderItem( order == $order, $value : value ), init( double total = 0; ), action( total += $value; ), result( total ) ) then # apply discount to $order end As I understand from your code, 1. Make List for Event class, because accumulate will loop through the elements of List<Event> 2. Init (write action codes, i.e. initialize value so you will find how many time it got looped) 3. Write code inside the block of action(//code here) and 4. Update it in result block i.e. result(//update here); Being said, follow the structure 1) init, 2) action, 3) result as above.. *From:*Sandhya Sree [via Drools] [mailto:ml-node+[hidden email] </user/SendEmail.jtp?type=node&node=4028640&i=0>] *Sent:* Tuesday, March 11, 2014 1:51 PM *To:* Gopu Shrestha *Subject:* [rules-users] sliding window problem i have a class called Event which has the following members { name, source, timestamp } with getters ,setters and constructor. i have a rule file which creates Event objects whenever a file is added / deleted in a particular folder. the rule file is as follows |rule "new file"| |when| |$p: RuleContext( $old : getOldContext().getContainedFiles(), $new :getNewContext().getContainedFiles())| |RuleContext( $old != $new)| |accumulate( $s : Object( this not memberOf $old ) from $new, $plus : collectList( $s ) ) | |events : Object() from $plus;| |then| |Event event = new Event("new file added",$p.getOldContext().getParent(),new Date());| |end| | | | | |rule " file deleted"| |when| |$p: RuleContext( $old : getOldContext().getContainedFiles(), $new:getNewContext().getContainedFiles())| |RuleContext( $old != $new)| |accumulate( $t : Object( this not memberOf $new ) from $old, $mins : collectList( $t ) )| |events : Object() from $mins; | |then| |Event event = new Event("file deleted",$p.getOldContext().getParent(),new Date());| |end | (do not confuse with RuleContext and other unknown identifiers.. they r just related with other classes in the project.. these two rules just works fine )..i need to use a sliding time window and create another event if the number of file additions are > 5 over the past 1 minute. my rule file is : |declare Event | |@role( event ) | |end | | | | | |rule "More than 5 additions"| |when | |Number(intValue > 5) | |from accumulate( $tick : Event ( name == "new file added" ) over window:time( 1m ),| | count( $tick ) ) )| |then | | System.out.println("too many additions"); | |end | i have enabled stream mode processing too.. but it doesnt seem to work. what could be the problem? _______________________________________________ rules-users mailing list [hidden email] </user/SendEmail.jtp?type=node&node=4028639&i=0> https://lists.jboss.org/mailman/listinfo/rules-users ------------------------------------------------------------------------ *If you reply to this email, your message will be added to the discussion below:* http://drools.46999.n3.nabble.com/rules-users-sliding-window-problem-tp40... To start a new topic under Drools: User forum, email [hidden email] </user/SendEmail.jtp?type=node&node=4028640&i=1> To unsubscribe from Drools, click here. NAML <http://drools.46999.n3.nabble.com/template/NamlServlet.jtp?macro=macro_vi... ------------------------------------------------------------------------ View this message in context: RE: [rules-users] sliding window problem <http://drools.46999.n3.nabble.com/RE-rules-users-sliding-window-problem-t... Sent from the Drools: User forum mailing list archive <http://drools.46999.n3.nabble.com/Drools-User-forum-f47000.html> at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users