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From "Jonas Salk (JIRA)" <j...@apache.org>
Subject [jira] Commented: (SOLR-218) Support for Lucene QueryParser properties via solrconfig.xml file
Date Mon, 20 Apr 2009 13:53:47 GMT

    [ https://issues.apache.org/jira/browse/SOLR-218?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12700793#action_12700793
] 

Jonas Salk commented on SOLR-218:
---------------------------------

That is good to hear Mark.   Would you mind taking a few minutes and putting down exact code
changes you made?    I want to backtrack everything i did to ensure, I've not made some mistakes.
  I've basically updated only one Java file: 
Jonas

SolrQueryParser.java
------------------------------
public SolrQueryParser(IndexSchema schema, String defaultField) {
 ... 
// added 
setAllowLeadingWildcard(true); 
setLowercaseExpandedTerms(true);
 ...
 }
...
public SolrQueryParser(QParser parser, String defaultField, Analyzer analyzer)
 { 
... 
setAllowLeadingWildcard(true); 
setLowercaseExpandedTerms(true); 
...
 }

> 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
>             Fix For: 1.5
>
>
> 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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