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From "Michael Kimsal (JIRA)" <j...@apache.org>
Subject [jira] Commented: (SOLR-218) Support for Lucene QueryParser properties via solrconfig.xml file
Date Wed, 02 May 2007 13:39:15 GMT

    [ https://issues.apache.org/jira/browse/SOLR-218?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12493103
] 

Michael Kimsal commented on SOLR-218:
-------------------------------------

    setAllowLeadingWildcard(SolrConfig.config.getBool("query/setAllowLeadingWildcard"));
    setLowercaseExpandedTerms(SolrConfig.config.getBool("query/lowerCaseExpandedTerms"));

=============================================================================

>From what I understand, these sorts of things could likely be handled by custom query
parsers.  However, 
I'm voting for this because I'd like to see the ability to configure these items globally
first, as well as 
already having the option to write custom query parsers if needed.  This provides an easier
way to 
configure the behaviour without needing to write code or recompile anything.

> Support for Lucene QueryParser properties via solrconfig.xml file
> -----------------------------------------------------------------
>
>                 Key: SOLR-218
>                 URL: https://issues.apache.org/jira/browse/SOLR-218
>             Project: Solr
>          Issue Type: Improvement
>          Components: search
>    Affects Versions: 1.1.0
>            Reporter: Michael Pelz-Sherman
>
> The SolrQueryParser class, which extends Lucene's QueryParser class, does not provide
any way of setting the various QueryParser properties via the solr config file (solrconfig.xml).
These properties include:
> allowLeadingWildcard (Set to true to allow * and ? as the first character of a PrefixQuery
and WildcardQuery)
> dateResolution: Sets the default date resolution used by RangeQueries for fields for
which no specific date resolutions has been set.
> defaultOperator: Sets the boolean operator of the QueryParser.
> fuzzyMinSim: Set the minimum similarity for fuzzy queries.
> locale: Set locale used by date range parsing.
> lowercaseExpandedTerms: Whether terms of wildcard, prefix, fuzzy and range queries are
to be automatically lower-cased or not.
> phraseSlop: Sets the default slop for phrases.
> useOldRangeQuery: By default QueryParser uses new ConstantScoreRangeQuery in preference
to RangeQuery for range queries.
> This can be achieved by calling the setter methods for these properties in the SolrQueryParser
constructor,
>   public SolrQueryParser(IndexSchema schema, String defaultField) {
>     super(defaultField == null ? schema.getDefaultSearchFieldName() : defaultField, schema.getQueryAnalyzer());
>     this.schema = schema;
>     setAllowLeadingWildcard(SolrConfig.config.getBool("query/setAllowLeadingWildcard"));
>     setLowercaseExpandedTerms(SolrConfig.config.getBool("query/lowerCaseExpandedTerms"));
>   }
> In addition, solr should not modify these values from the defaults provided by Lucene,
as it currently does by calling setLowercaseExpandedTerms(false) in this method.

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