Hi Adrien,

Thanks for the reply.

I am able to retrieve the child docId's using the .ToChildBlockJoinQuery.
Now for me to do aggregates i need to find the document using
reader.document(int docID) right?. If that is the case won't getting all
the documents would be a costly operation and then finally doing the
aggregates.

Is there any other way around this?

Thanks
Gopal Sharma







On Mon, Nov 15, 2021 at 10:36 PM Adrien Grand <jpou...@gmail.com> wrote:

> It's not straightforward as we don't provide high-level tooling to do this.
> You need to use the BitSetProducer that you pass to the
> ToParentBlockJoinQuery in order to resolve the range of child doc IDs for a
> given parent doc ID (see e.g. how ToChildBlockJoinQuery does it), and then
> aggregate over these child doc IDs.
>
> On Mon, Nov 15, 2021 at 6:06 AM Gopal Sharma
> <gopal.sha...@algonomy.com.invalid> wrote:
>
> > Hi Team,
> >
> > I have a document structure as a customer which itself has few attributes
> > like gender, location etc.
> >
> > Each customer will have a list of facts like transaction, product views
> > etc.
> >
> > I want to do an aggregation of the facts. For example find all customers
> > who are from a specific location and have done transactions worth more
> than
> > 500$ between two date ranges.
> >
> > The queries can go deeper than this.
> >
> > Thanks in advance.
> >
> > Gopal Sharma
> >
>
>
> --
> Adrien
>

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