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https://issues.apache.org/jira/browse/SOLR-4197?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13534335#comment-13534335
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Yonik Seeley commented on SOLR-4197:
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bq. Apparently adding a space at the beginning is not a complete solution - I
then get an exception when it's the standard lucene parser:
A complete solution to what? You *should* get an error since it's not valid
lucene syntax. The space did it's job and prevented the localParams from being
interpreted as localParams. That's what you were trying to do, right?
> EDismax allows end users to use local params in q= to override global params
> ----------------------------------------------------------------------------
>
> Key: SOLR-4197
> URL: https://issues.apache.org/jira/browse/SOLR-4197
> Project: Solr
> Issue Type: Bug
> Affects Versions: 3.5, 3.6, 4.0
> Reporter: Peter Wolanin
>
> Edismax is advertised as suitable to be used to "process advanced user input
> directly". Thus, it would seem reasonable to have an application directly
> pass user input in the q= parameter to a back-end Solr server.
> However, it seems that users can enter local params at the start of q= which
> override the global params that the application (e.g. website) may have set
> on the query string. Confirmed with Erik Hatcher that this is somewhat
> unexpected behavior (though one could argue it's an expected feature of any
> query parser)
> Proposed fix - add a parameter (e.g. that can be used as an invariant) that
> can be passed to inhibit Solr from using local params from the q= parameter.
> This is somewhat related to SOLR-1687
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