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From David Smiley <david.w.smi...@gmail.com>
Subject Re: Negative Date Query for Local Params in Solr
Date Wed, 21 Sep 2016 03:38:22 GMT
So that page referenced describes local-params, and describes the special
"v" local-param.  But first, see a list of all query parsers (which lists
"field"): https://cwiki.apache.org/confluence/display/solr/Other+Parsers
and
https://cwiki.apache.org/confluence/display/solr/The+Standard+Query+Parser for
the "lucene" one.

The "op" param is rather unique... it's not defined by any query parser.  A
trick is done in which a custom field type (DateRangeField in this case) is
able to inspect the local-params, and thus define and use params it needs.
https://cwiki.apache.org/confluence/display/solr/Working+with+Dates "More
DateRangeField Details" mentions "op".  {!lucene df=dateRange
op=Contains}... would also work.  I don't know of any other local-param
used in this way.

On Tue, Sep 20, 2016 at 11:21 PM David Smiley <david.w.smiley@gmail.com>
wrote:

> Personally I learned this by pouring over Solr's source code some time
> ago.  I suppose the only official reference to this stuff is:
>
> https://cwiki.apache.org/confluence/display/solr/Local+Parameters+in+Queries
> But that page doesn't address the implications for when the syntax is a
> clause of a larger query instead of being the whole query (i.e. has "{!"...
> but but not at the first char).
>
> On Tue, Sep 20, 2016 at 2:06 PM Sandeep Khanzode
> <sandeep_khanzode@yahoo.com.invalid> wrote:
>
>> Wow. Simply awesome!
>> Where can I read more about this? I am not sure whether I understand what
>> is going on behind the scenes ... like which parser is invoked for !field,
>> how can we know which all special local params exist, whether we should
>> prefer edismax over others, when is the LuceneQParser invoked in other
>> conditions, etc? Would appreciate if you could indicate some references to
>> catch up.
>> Thanks a lot ...  SRK
>>
>>   Show original message     On Tuesday, September 20, 2016 5:54 PM, David
>> Smiley <david.w.smiley@gmail.com> wrote:
>>
>>
>>  OH!  Ok the moment the query no longer starts with "{!", the query is
>> parsed by defType (for 'q') and will default to lucene QParser.  So then
>> it
>> appears we have a clause with a NOT operator.  In this parsing mode,
>> embedded "{!" terminates at the "}".  This means you can't put the
>> sub-query text after the "}", you instead need to put it in the special
>> "v"
>> local-param.  e.g.:
>> -{!field f=schedule op=Contains v='[2016-08-26T12:00:12Z TO
>> 2016-08-26T15:00:12Z]'}
>>
>> On Tue, Sep 20, 2016 at 8:15 AM Sandeep Khanzode
>> <sandeep_khanzode@yahoo.com.invalid> wrote:
>>
>> > This is what I get ...
>> > { "responseHeader": { "status": 400, "QTime": 1, "params": { "q":
>> > "-{!field f=schedule op=Contains}[2016-08-26T12:00:12Z TO
>> > 2016-08-26T15:00:12Z]", "indent": "true", "wt": "json", "_":
>> > "1474373612202" } }, "error": { "msg": "Invalid Date in Date Math
>> > String:'[2016-08-26T12:00:12Z'", "code": 400 }}
>> >  SRK
>> >
>> >    On Tuesday, September 20, 2016 5:34 PM, David Smiley <
>> > david.w.smiley@gmail.com> wrote:
>> >
>> >
>> >  It should, I think... what happens? Can you ascertain the nature of the
>> > results?
>> > ~ David
>> >
>> > On Tue, Sep 20, 2016 at 5:35 AM Sandeep Khanzode
>> > <sandeep_khanzode@yahoo.com.invalid> wrote:
>> >
>> > > For Solr 6.1.0
>> > > This works .. -{!field f=schedule op=Intersects}2016-08-26T12:00:56Z
>> > >
>> > > This works .. {!field f=schedule op=Contains}[2016-08-26T12:00:12Z TO
>> > > 2016-08-26T15:00:12Z]
>> > >
>> > >
>> > > Why does this not work?-{!field f=schedule
>> > > op=Contains}[2016-08-26T12:00:12Z TO 2016-08-26T15:00:12Z]
>> > >  SRK
>> >
>> > --
>> > Lucene/Solr Search Committer, Consultant, Developer, Author, Speaker
>> > LinkedIn: http://linkedin.com/in/davidwsmiley | Book:
>> > http://www.solrenterprisesearchserver.com
>> >
>> >
>> >
>>
>> --
>> Lucene/Solr Search Committer, Consultant, Developer, Author, Speaker
>> LinkedIn: http://linkedin.com/in/davidwsmiley | Book:
>> http://www.solrenterprisesearchserver.com
>>
>>
>>
>
> --
> Lucene/Solr Search Committer, Consultant, Developer, Author, Speaker
> LinkedIn: http://linkedin.com/in/davidwsmiley | Book:
> http://www.solrenterprisesearchserver.com
>
-- 
Lucene/Solr Search Committer, Consultant, Developer, Author, Speaker
LinkedIn: http://linkedin.com/in/davidwsmiley | Book:
http://www.solrenterprisesearchserver.com

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