[ http://issues.apache.org/jira/browse/SOLR-80?page=comments#action_12457898 ] Paul Elschot commented on SOLR-80: ----------------------------------
With Lucene filters as Matchers: http://issues.apache.org/jira/browse/LUCENE-584 and the possibility to add a Matcher to a Lucene BooleanQuery as excluded for a negative filter (or as required for a positive filter), this could be implemented efficiently in Lucene's BooleanQuery. > negative filter queries > ----------------------- > > Key: SOLR-80 > URL: http://issues.apache.org/jira/browse/SOLR-80 > Project: Solr > Issue Type: New Feature > Components: search > Reporter: Yonik Seeley > > There is a need for negative filter queries to avoid long filter generation > times and large caching requirements. > Currently, if someone wants to filter out a small number of documents, they > must specify the complete set of documents to express those negative > conditions against. > q=foo&fq=id:[* TO *] -id:101 > In this example, to filter out a single document, the complete set of > documents (minus one) is generated, and a large bitset is cached. You could > also add the restriction to the main query, but that doesn't work with the > dismax handler which doesn't have a facility for this. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://issues.apache.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira
