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From "Yonik Seeley (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (SOLR-11244) Query DSL for Solr
Date Fri, 18 Aug 2017 14:59:00 GMT

    [ https://issues.apache.org/jira/browse/SOLR-11244?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16133075#comment-16133075
] 

Yonik Seeley edited comment on SOLR-11244 at 8/18/17 2:58 PM:
--------------------------------------------------------------

bq. It would be great if we could also support multiple queries in a single request. 

I think this JIRA is more about a JSON query representation that can be used anywhere a normal
query can be used (and natively used within a JSON request of course).

Our normal request and response formats do not lend themselves to multiple queries.  The JSON
Facet API does, however.  One can already facet on multiple different queries in the same
request.  We just need to be able to grab the top N documents for each of the queries (SOLR-7830)


was (Author: yseeley@gmail.com):
bq. It would be great if we could also support multiple queries in a single request. 

I think this is more about a JSON query representation that can be used anywhere a normal
query can be used (and natively used within a JSON request of course).

Our normal request and response formats do not lend themselves to multiple queries.  The JSON
Facet API does, however.  One can already facet on multiple different queries in the same
request.  We just need to be able to grab the top N documents for each of the queries (SOLR-7830)

> Query DSL for Solr
> ------------------
>
>                 Key: SOLR-11244
>                 URL: https://issues.apache.org/jira/browse/SOLR-11244
>             Project: Solr
>          Issue Type: Improvement
>      Security Level: Public(Default Security Level. Issues are Public) 
>            Reporter: Cao Manh Dat
>            Assignee: Cao Manh Dat
>         Attachments: SOLR-11244.patch, Solr Query DSL - examples.html
>
>
> It will be great if Solr has a powerful query DSL. This ticket is an extension of [http://yonik.com/solr-json-request-api/].
> Here are several examples of Query DSL
> {code}
> curl -XGET http://localhost:8983/solr/query -d '
> {
>     "query" : {
>         "lucene" : {
>             "df" : "content",
>             "query" : "solr lucene"
>         }
>     }
> }
> {code}
> the above example can be rewritten as (because lucene is the default qparser)
> {code}
> curl -XGET http://localhost:8983/solr/query -d '
> {
>     "query" : "content:(solr lucene)"
> }
> {code}
> more complex example:
> {code}
> curl -XGET http://localhost:8983/solr/query -d '
> { 
>     "query" : {
>         "boost" : {
>             "query" : {
>                 "lucene" : {
>                     "q.op" : "AND",
>                     "df" : "cat_s",
>                     "query" : "A"
>                 }
>             }
>             "b" : "log(popularity)"
>         }
>     }
> }
> {code}
> I call it Json Query Object (JQO) and It defined as :
> - It can be a valid query string for Lucene query parser, for example : "title:solr"
> - It can be a valid local parameters string, for example : "{!dismax qf=myfield}solr
rocks"
> - It can be a json object with structure like this 
> {code}
> {
>   "query-parser-name" : {
>      "param1" : "value1",
>      "param2" : "value2",
>      "query" : <JQO>,
>      "another-param" : <JQO>
>   }
> }
> {code}
> Therefore the above dismax query can be rewritten as ( be noticed that the query argument
in local parameters, is put as value of {{query}} field )
> {code}
> {
>   "dismax" : {
>      "qf" : "myfield"
>      "query" : "solr rocks"
>   }
> }
> {code}
> I will attach an HTML, contain more examples of Query DSL.



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