I'm using SOLR 1.4.1 with SOLR-1553 applied (edismax query parser). I'm
experiencing inconsistent behavior with terms grouped in parenthesis.
Sometimes they are AND'ed and sometimes OR'ed together.
1. q=Title:(life)&defType=edismax > 285 results
2. q=Title:(hope)&defType=edismax > 34 results
3. q=Title:(life AND hope)&defType=edismax > 1 result
4. q=Title:(life OR hope)&defType=edismax > 318 results
5. q=Title:(life hope)&defType=edismax > 1 result (life, hope are being AND'ed
together)
6. q=Title:(life AND hope) AND Title:(life)&defType=edismax > 1 result
7. q=Title:(life OR hope) AND Title:(life)&defType=edismax > 285 result
8. q=Title:(life hope) AND Title:(life)&defType=edismax > 285 results (life,
hope are being OR'ed together)
See how in #5, the two terms get AND'ed, but by adding the additional
(nonsense) clause in #8, the first two terms get OR'ed . Is this a feature or
a bug? Am I likely doing something wrong?
I've tried this both with ...defaultOperator="AND"... and
...defaultOperator="OR"... I've also tried the two settings with "q.op". It
seems as if edismax doesn't use these at all.
When using the default query parser, I get consistent AND/OR logic as expected.
That is, if the "defaultOperator" (or q.op if specified) is always
consistently applied.
As a workaround, I think I can just always insert the operator (as in examples
6 & 7). However, this is an extra burden on our clients that I'd like to avoid
if at all possible.
See below for more configuration information. Any ideas are appreciated.
James Dyer
E-Commerce Systems
Ingram Content Group
(615) 213-4311
Snippets from schema.xml:
<fieldType name="textStemmed" class="solr.TextField" positionIncrementGap="100">
<analyzer type="index">
<tokenizer
class="solr.WhitespaceTokenizerFactory"/>
<filter class="solr.StopFilterFactory"
ignoreCase="true" words="stopwords.txt" enablePositionIncrements="true" />
<filter class="solr.WordDelimiterFilterFactory"
generateWordParts="1" generateNumberParts="0" catenateWords="0"
catenateNumbers="0" catenateAll="0" splitOnCaseChange="0" splitOnNumerics="0"
stemEnglishPossessive="1" />
<filter class="solr.LowerCaseFilterFactory"/>
<filter class="solr.PorterStemFilterFactory"/>
</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="0" catenateWords="0"
catenateNumbers="0" catenateAll="0" splitOnCaseChange="0" splitOnNumerics="0"
stemEnglishPossessive="1" />
<filter class="solr.LowerCaseFilterFactory"/>
<filter class="solr.PorterStemFilterFactory"/>
</analyzer>
</fieldType>
...
<field name="Title" type="textStemmed" indexed="true" stored="true"
multiValued="false" omitNorms="true" omitTermFreqAndPositions="false" />
...
<solrQueryParser defaultOperator="AND"/>
