Dear Folks, I've filed following JIRA for this: https://issues.apache.org/jira/browse/APEXMALHAR-2082
Thanks, Pradeep A. Dalvi On Mon, May 9, 2016 at 9:42 PM, Pradeep A. Dalvi <[email protected]> wrote: > Mea Culpa! Yes. An error is certainly considered. I forgot to mention in > the proposal. > > Thanks, > Pradeep A. Dalvi > > On Mon, May 9, 2016 at 6:05 PM, Sandeep Deshmukh <[email protected]> > wrote: > >> + 1 >> >> An error port can be added to redirect tuples for which expression >> evaluation failed. >> >> Regards, >> Sandeep >> >> On Mon, May 9, 2016 at 6:02 PM, Shubham Pathak <[email protected]> >> wrote: >> >> > + 1 for having a filter operator. >> > >> > Thanks, >> > Shubham >> > >> > On Sun, May 8, 2016 at 10:50 AM, Mohit Jotwani <[email protected]> >> > wrote: >> > >> > > +1 >> > > >> > > Regards, >> > > Mohit >> > > On 8 May 2016 03:04, "Pradeep A. Dalvi" <[email protected]> wrote: >> > > >> > > > Dear Folks, >> > > > >> > > > We are working on Filter Operator which will allow apex users to >> filter >> > > > (select/drop) tuples based on the certain condition from incoming >> > stream. >> > > > >> > > > >> > > > Use case: >> > > > >> > > > ------------- >> > > > >> > > > In many cases, not all tuples are of interest for the downstream >> > > operators. >> > > > In such cases, one may want select/filter out tuples to downstream. >> > Also >> > > > one may want to process tuples which did not meet the >> > > condition/expression. >> > > > >> > > > >> > > > Functionality: >> > > > >> > > > ----------------- >> > > > >> > > > 1. Filter operator shall receive POJO as input tuple and emit POJO >> on >> > > > either of output ports i.e. true and false. As the output ports' >> name >> > > > signify, when condition is met then the POJO shall be emitted on >> true >> > > port >> > > > and if condition is not met then that POJO shall be emitted on false >> > > port. >> > > > >> > > > 2. Operator needs condition/expression as a input param. This >> condition >> > > is >> > > > based on expression language support we already have in Malhar. >> > > > >> > > > >> > > > Please feel free to let me know your thoughts on this. >> > > > >> > > > >> > > > Thanks, >> > > > >> > > > -- >> > > > Pradeep A. Dalvi >> > > > >> > > >> > >> > > -- Pradeep A. Dalvi Software Engineer DataTorrent (India)
