Hi All,
I'm having some trouble with a query using some wildcard and I was wondering if
anyone could tell me why these two
similar queries do not return the same number of results. Basically, the query
I'm making should return all docs whose title starts
(or contain) the string "lowe'". I suspect some analyzer is causing this
behaviour and I'd like to know if there is a way to fix this problem.
1) select?q=*:*&fq=title:(+lowe')&debugQuery=on&rows=0
<result name="response" numFound="302" start="0"/>
<lst name="debug">
<str name="rawquerystring">*:*</str>
<str name="querystring">*:*</str>
<str name="parsedquery">MatchAllDocsQuery(*:*)</str>
<str name="parsedquery_toString">*:*</str>
<lst name="explain"/>
<str name="QParser">LuceneQParser</str>
<arr name="filter_queries">
<str>title:( lowe')</str>
</arr>
<arr name="parsed_filter_queries">
<str>title:low</str>
</arr>
2) select?q=*:*&fq=title:(+lowe'*)&debugQuery=on&rows=0
<result name="response" numFound="0" start="0"/>
<lst name="debug">
<str name="rawquerystring">*:*</str>
<str name="querystring">*:*</str>
<str name="parsedquery">MatchAllDocsQuery(*:*)</str>
<str name="parsedquery_toString">*:*</str>
<lst name="explain"/>
<str name="QParser">LuceneQParser</str>
<arr name="filter_queries">
<str>title:( lowe'*)</str>
</arr>
<arr name="parsed_filter_queries">
<str>title:lowe'*</str>
</arr>
...
</lst>
The <title> field is defined as:
<field name="title" type="text" indexed="true" stored="true" required="false"/>
where the text type is:
<fieldType name="text" class="solr.TextField" positionIncrementGap="100">
<analyzer type="index">
<tokenizer class="solr.WhitespaceTokenizerFactory"/>
<!-- in this example, we will only use synonyms at query time
<filter class="solr.SynonymFilterFactory" synonyms="index_synonyms.txt"
ignoreCase="true" expand="false"/>
-->
<!-- Case insensitive stop word removal.
add enablePositionIncrements=true in both the index and query
analyzers to leave a 'gap' for more accurate phrase queries.
-->
<filter class="solr.StopFilterFactory"
ignoreCase="true"
words="stopwords.txt"
enablePositionIncrements="true"
/>
<filter class="solr.WordDelimiterFilterFactory" generateWordParts="1"
generateNumberParts="1" catenateWords="1" catenateNumbers="1" catenateAll="0"
splitOnCaseChange="1"/>
<filter class="solr.LowerCaseFilterFactory"/>
<filter class="solr.SnowballPorterFilterFactory" language="English"
protected="protwords.txt"/>
</analyzer>
<analyzer type="query">
<tokenizer class="solr.WhitespaceTokenizerFactory"/>
<filter class="solr.SynonymFilterFactory" synonyms="synonyms.txt"
ignoreCase="true" expand="true"/>
<filter class="solr.StopFilterFactory"
ignoreCase="true"
words="stopwords.txt"
enablePositionIncrements="true"
/>
<filter class="solr.WordDelimiterFilterFactory" generateWordParts="1"
generateNumberParts="1" catenateWords="0" catenateNumbers="0" catenateAll="0"
splitOnCaseChange="1"/>
<filter class="solr.LowerCaseFilterFactory"/>
<filter class="solr.SnowballPorterFilterFactory" language="English"
protected="protwords.txt"/>
</analyzer>
</fieldType>
