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From "David Smiley (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-2724) Deprecate defaultSearchField and defaultOperator defined in schema.xml
Date Fri, 15 Jun 2012 19:27:43 GMT

    [ https://issues.apache.org/jira/browse/SOLR-2724?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13295873#comment-13295873
] 

David Smiley commented on SOLR-2724:
------------------------------------

One thing I realized is that a delete query might depend on the default search field or operator
-- which is a very bad idea and thus all the more reason to deprecate them. I've seen a real
situation where a delete query script was accidentally given arguments where the devops guy
thought they were entering in IDs (which looked like URLs) when they were being treated as
queries.  So they were tokenized, and some random cross-section of the data was deleted, instead
of getting an error about terms being ambiguous.

There is a test in SolrExampleTests line 499 that assumes a deleteByQuery("??::??") is going
to fail due to a syntax exception when it will actually fail because no field name was specified
in the query.  
                
> Deprecate defaultSearchField and defaultOperator defined in schema.xml
> ----------------------------------------------------------------------
>
>                 Key: SOLR-2724
>                 URL: https://issues.apache.org/jira/browse/SOLR-2724
>             Project: Solr
>          Issue Type: Improvement
>          Components: Schema and Analysis, search
>            Reporter: David Smiley
>            Assignee: David Smiley
>            Priority: Minor
>             Fix For: 3.6, 4.0
>
>         Attachments: SOLR-2724_deprecateDefaultSearchField_and_defaultOperator.patch
>
>   Original Estimate: 2h
>  Remaining Estimate: 2h
>
> I've always been surprised to see the <defaultSearchField> element and <solrQueryParser
defaultOperator="OR"/> defined in the schema.xml file since the first time I saw them.
 They just seem out of place to me since they are more query parser related than schema related.
But not only are they misplaced, I feel they shouldn't exist. For query parsers, we already
have a "df" parameter that works just fine, and explicit field references. And the default
lucene query operator should stay at OR -- if a particular query wants different behavior
then use q.op or simply use "OR".
> <similarity> Seems like something better placed in solrconfig.xml than in the schema.

> In my opinion, defaultSearchField and defaultOperator configuration elements should be
deprecated in Solr 3.x and removed in Solr 4.  And <similarity> should move to solrconfig.xml.
I am willing to do it, provided there is consensus on it of course.

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