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https://issues.apache.org/jira/browse/SOLR-152?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12471770
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Hoss Man commented on SOLR-152:
-------------------------------
i haven't looked at the latest patch yet, but it occured to me on the train
this morning that a better mechanism then matchall={true}|{false} would be
altq={lucene-standard-syntax-query}
with the psuedoe code being...
Query mainUserQuery = null;
if ( params.get(Q) is not empty ) {
mainUserQuery = dismaxParse( params.get(Q) )
} else if ( params.get(ALTQ) is not empty ) {
mainUserQuery = SolrQueryParser.parse( params.get(ALTQ) );
}
if ( null == mainUserQuery) {
throw NoQueryStringException;
}
...that way people that want a MatchAllDocs fallback can put altq=*:* in their
defaults or UIR ... but if they want it with a different boost (because they
are using BF and BQ) they can do that, or if their index is heavily partitioned
by doctype and they only want certain types of docs to be included in the set
when no Q is specified they can use "altq=doctype:(product blog)"
> Dismax should not require 'q'
> -----------------------------
>
> Key: SOLR-152
> URL: https://issues.apache.org/jira/browse/SOLR-152
> Project: Solr
> Issue Type: Improvement
> Components: search
> Reporter: Ryan McKinley
> Priority: Trivial
> Attachments: SOLR-152-DismaxNoQ.patch, SOLR-152-DismaxNoQ.patch
>
>
> using fq=xxx should be sufficient to make a valid query
> see:
> http://www.nabble.com/dismax-without-q%3D-tf3198431.html#a8880594
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