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https://issues.apache.org/jira/browse/SOLR-756?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12630208#action_12630208
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Mark Miller commented on SOLR-756:
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I think the whole point of dismax is to support a very limited subset of the 
query syntax right? I think you want to add a new queryparser not modify 
dismax...

> Make DisjunctionMaxQueryParser generally useful by supporting all query types.
> ------------------------------------------------------------------------------
>
>                 Key: SOLR-756
>                 URL: https://issues.apache.org/jira/browse/SOLR-756
>             Project: Solr
>          Issue Type: Improvement
>    Affects Versions: 1.3
>            Reporter: David Smiley
>         Attachments: SolrPluginUtilsDisMax.patch
>
>
> This is an enhancement to the DisjunctionMaxQueryParser to work on all the 
> query variants such as wildcard, prefix, and fuzzy queries, and to support 
> working in "AND" scenarios that are not processed by the min-should-match 
> DisMax QParser. This was not in Solr already because DisMax was only used for 
> a very limited syntax that didn't use those features. In my opinion, this 
> makes a more suitable base parser for general use because unlike the 
> Lucene/Solr parser, this one supports multiple default fields whereas other 
> ones (say Yonik's {!prefix} one for example, can't do dismax). The notion of 
> a single default field is antiquated and a technical under-the-hood detail of 
> Lucene that I think Solr should shield the user from by on-the-fly using a 
> DisMax when multiple fields are used. 
> (patch to be attached soon)

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