apex-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Shubham Pathak <shub...@datatorrent.com>
Subject Re: Data Filter Operator in Malhar
Date Mon, 09 May 2016 12:32:25 GMT
+ 1 for having a filter operator.

Thanks,
Shubham

On Sun, May 8, 2016 at 10:50 AM, Mohit Jotwani <mohit@datatorrent.com>
wrote:

> +1
>
> Regards,
> Mohit
> On 8 May 2016 03:04, "Pradeep A. Dalvi" <prad@apache.org> 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
> >
>

Mime
  • Unnamed multipart/alternative (inline, None, 0 bytes)
View raw message