Re: [rules-users] Duration attritube and Temporal Operators
Ok, I guessed that, but how is the precise semantics of temporal operator then? The docs uses a bizarre startTimestamp and endTimestamp that are not defined anywhere. Do those relate to timestamp and duration? And how? Thanks, Gil -- View this message in context: http://drools.46999.n3.nabble.com/Duration-attritube-and-Temporal-Operators-tp3810201p3815382.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Duration attritube and Temporal Operators
Well, in everyday life, a duration is what is between start and end. Here's the trivial relation between the notation used in the temporal operators' docs and the @nnotated fields in an event: $x.startTimestamp == @timestamp $x.endTimestamp == @timestamp + @duration I think that the operator definitions are clear enough - do you have any particular problem? -W On 10 March 2012 18:16, mind gil.vegli...@gmail.com wrote: Ok, I guessed that, but how is the precise semantics of temporal operator then? The docs uses a bizarre startTimestamp and endTimestamp that are not defined anywhere. Do those relate to timestamp and duration? And how? Thanks, Gil -- View this message in context: http://drools.46999.n3.nabble.com/Duration-attritube-and-Temporal-Operators-tp3810201p3815382.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Duration attritube and Temporal Operators
Pretty sure I am correct, think the devs are at a conference this week in London. http://blog.athico.com/ 1)Start time , point time interval. 2)Don't know exactly, I think the documentation is just showing what is meant. But it does say you need to set at least the start time and duration. If you don't set the time stamp , it gets a timestamp of the time it was inserting into working memory and duration 0. 3)timestamp is the same as start time. if no duration is set In our rule set , I set a timestamp attribute, duration and also a endtimestamp. You can also do items like this , but reading the docs I am double checking timeEndMs after[-120s,120s] AND0.timeMs , More is in the http://docs.jboss.org/drools/release/5.4.0.Beta2/drools-fusion-docs/html/ch02.html#d0e289 I think the start and endtime time stamp statements in the documentation is for clarity. When working with the rules we have , reading the documentation let me know if the temporal operators is what I needed. On Mar 8, 2012 11:55 AM, mind gil.vegli...@gmail.com wrote: Hello everybody, I recently started using Drools (with C#) and I have some problems in understanding how temporal operators work with the duration field. According to the documentation, the temporal operators work with startTimestamp and endTimestamp of events, the semantics being defined with inequalities. In order to work, temporal operator requires the duration field to be declared. Now the questions: 1. What does @timeStamp stay for? The start or the end timestamp? 2. Does Drools calculate startTimestamp and endTimestamp if I set @timeStamp and @duration attribute from my C# code? If not how can I set them? (like shall I declare like @startTimeStamp(sth) and set from the C# code?) 3. Do temporal operators work if I do not set explicitly the start and end timestamps but just @timeStamp and @duration attributes? In particular, I have this drl file (%VAR% are replaced by other code): declare IntensionalEvent @role(event) @timeStamp(timeStamp) @duration(duration) end rule Expression (%EVENTNAME1%, %OPERATOR%, %EVENTNAME2%, %TIMESPAN%, %TIMEVAR%) dialect mvel when $eventA : IntensionalEvent( name == '%EVENTNAME2%' ) $eventB : IntensionalEvent( this %OPERATOR% $eventA, name == '%EVENTNAME1%' ) over window:time( %TIMESPAN% ) then blah blah... create an IntensionalEvent and set timestamp and duration end Thanks everybody, Gil -- View this message in context: http://drools.46999.n3.nabble.com/Duration-attritube-and-Temporal-Operators-tp3810201p3810201.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Duration attritube and Temporal Operators
1) Ok, I need the precise semantics for interval-based event, not the point events. 2) Well the docs lacks information on the starting time and the ending time of events and then defines the semantics of temporal operators: there must be something missing. Moreover even looking at the example I couldn't fine anything. 3) I want to set the duration though, all my software works with interval-based events... Gil -- View this message in context: http://drools.46999.n3.nabble.com/Duration-attritube-and-Temporal-Operators-tp3810201p3813079.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Duration attritube and Temporal Operators
Hi all, i have the same problem, i haven't well understood meaning and use of timestamp and duration fields. From my understanding, timestamp field is start time and duration is difference between end time and start time. Is it rigth? On the other hand, i know that it is a good practice don't change these 2 fields. I mean, it isn't suggested to modify duration or timestamp after that the event is inserted in session (is it right?) Furthermore, it is bad practice to insert an event with old timestamp, compared to system time. So, i don't understand, how is it possible to manage event with duration. If i have an event with timestamp t1 and duration 5s, of course i know it when it is finished, so i have to insert it into session with old timestamp. Sorry for bad English, i hope i was clear. Thanks a lot, On Fri, Mar 9, 2012 at 5:08 PM, mind gil.vegli...@gmail.com wrote: 1) Ok, I need the precise semantics for interval-based event, not the point events. 2) Well the docs lacks information on the starting time and the ending time of events and then defines the semantics of temporal operators: there must be something missing. Moreover even looking at the example I couldn't fine anything. 3) I want to set the duration though, all my software works with interval-based events... Gil -- View this message in context: http://drools.46999.n3.nabble.com/Duration-attritube-and-Temporal-Operators-tp3810201p3813079.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Duration attritube and Temporal Operators
There are two values that Drools uses with facts that have been given @role(event): timestamp and duration. The timestamp may be a fact field, provided by you, or added automatically (in a hidden location) by Drools. If it is a field called x, you must say @timestamp( x ) in the declare. The duration field must be provided as a fact field, say y, so you must say @duration( y ) in the declare, or else duration is 0. @timestamp and @duration cannot be changed after the event's insertion. If you have an event whose end you don't know when you are informed about it's beginning, then you'll have to make do with two events, one marking the start and the other one the end. If you're in CLOUD mode, you can combine a start and a matching end event to one with a start and a duration and continue to reason with that. -W 2012/3/9 Matteo Cusmai cusmaimat...@gmail.com Hi all, i have the same problem, i haven't well understood meaning and use of timestamp and duration fields. From my understanding, timestamp field is start time and duration is difference between end time and start time. Is it rigth? On the other hand, i know that it is a good practice don't change these 2 fields. I mean, it isn't suggested to modify duration or timestamp after that the event is inserted in session (is it right?) Furthermore, it is bad practice to insert an event with old timestamp, compared to system time. So, i don't understand, how is it possible to manage event with duration. If i have an event with timestamp t1 and duration 5s, of course i know it when it is finished, so i have to insert it into session with old timestamp. Sorry for bad English, i hope i was clear. Thanks a lot, On Fri, Mar 9, 2012 at 5:08 PM, mind gil.vegli...@gmail.com wrote: 1) Ok, I need the precise semantics for interval-based event, not the point events. 2) Well the docs lacks information on the starting time and the ending time of events and then defines the semantics of temporal operators: there must be something missing. Moreover even looking at the example I couldn't fine anything. 3) I want to set the duration though, all my software works with interval-based events... Gil -- View this message in context: http://drools.46999.n3.nabble.com/Duration-attritube-and-Temporal-Operators-tp3810201p3813079.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] Duration attritube and Temporal Operators
Hello everybody, I recently started using Drools (with C#) and I have some problems in understanding how temporal operators work with the duration field. According to the documentation, the temporal operators work with startTimestamp and endTimestamp of events, the semantics being defined with inequalities. In order to work, temporal operator requires the duration field to be declared. Now the questions: 1. What does @timeStamp stay for? The start or the end timestamp? 2. Does Drools calculate startTimestamp and endTimestamp if I set @timeStamp and @duration attribute from my C# code? If not how can I set them? (like shall I declare like @startTimeStamp(sth) and set from the C# code?) 3. Do temporal operators work if I do not set explicitly the start and end timestamps but just @timeStamp and @duration attributes? In particular, I have this drl file (%VAR% are replaced by other code): declare IntensionalEvent @role(event) @timeStamp(timeStamp) @duration(duration) end rule Expression (%EVENTNAME1%, %OPERATOR%, %EVENTNAME2%, %TIMESPAN%, %TIMEVAR%) dialect mvel when $eventA : IntensionalEvent( name == '%EVENTNAME2%' ) $eventB : IntensionalEvent( this %OPERATOR% $eventA, name == '%EVENTNAME1%' ) over window:time( %TIMESPAN% ) then blah blah... create an IntensionalEvent and set timestamp and duration end Thanks everybody, Gil -- View this message in context: http://drools.46999.n3.nabble.com/Duration-attritube-and-Temporal-Operators-tp3810201p3810201.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
