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From Joel Bernstein <joels...@gmail.com>
Subject Re: Query based on output from another collection
Date Fri, 05 May 2017 12:24:02 GMT
But /export has to be working to support the gatherNodes() expression.

Joel Bernstein
http://joelsolr.blogspot.com/

On Fri, May 5, 2017 at 7:40 AM, Joel Bernstein <joelsolr@gmail.com> wrote:

> This may work for you:
> https://cwiki.apache.org/confluence/display/solr/Graph+Traversal
>
> Joel Bernstein
> http://joelsolr.blogspot.com/
>
> On Fri, May 5, 2017 at 5:39 AM, Zheng Lin Edwin Yeo <edwinyeozl@gmail.com>
> wrote:
>
>> Hi,
>>
>> I'm using Solr 6.4.2.
>>
>> Is it possible to do a query based on output from another collection in
>> Solr Streaming, so that the entire query can be passed at one go?
>>
>> For example, I have a field called reference_s in collection1. In
>> collection2, I will need to pass what is in the reference_s from
>> collection1 into the search in collection2.
>>
>> Currently, I will need to do a normal query to collection1, to retrieve
>> all
>> the required values in reference_s, and put them into this join query,
>> which is a two step process. This is probably not so effective and also
>> slow down the search.
>>
>>
>> hashJoin(parallel(collection2,
>>                             workers=3,
>>                             sort="id asc",
>>                             innerJoin(search(collection1, q="*:*",
>> fl="id,reference_s",
>>                             sort="id asc", qt="/export",
>> partitionKeys="id"),
>>                                     search(collection2,
>>                                            q="reference_s:?", fl="id,
>> year_i,reference_s", sort="id asc", qt="/export",
>>                                            partitionKeys="id"),
>>                                            on="id")),
>>                                            hashed=search(collection3,
>> q="day_i:7", fl="id, day_i",
>>                                  sort="id asc", qt="/export"),
>>                             on="id")
>>
>>
>> Regards,
>> Edwin
>>
>
>

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