Hello,
It seems to me that there is no way how I can use dismax handler for
searching in both tokenized and untokenized fields while I'm searching for a
phrase.
Consider the next example. I have two fields in index: product_name and
product_name_un. The schema looks like:
<fieldType name="string_ignore_case" class="solr.TextField"
positionIncrementGap="100" omitNorms="true">
<analyzer>
<tokenizer class="solr.KeywordTokenizerFactory"/>
<filter class="solr.LowerCaseFilterFactory"/>
</analyzer>
</fieldType>
<fieldType name="text_no_stopwords_en" class="solr.TextField"
positionIncrementGap="100">
<analyzer>
<tokenizer class="solr.StandardTokenizerFactory"/>
<filter class="solr.WordDelimiterFilterFactory"
generateWordParts="1" generateNumberParts="1" catenateWords="0"
catenateNumbers="0" catenateAll="0" splitOnCaseChange="0"/>
<filter class="solr.LowerCaseFilterFactory"/>
<filter class="solr.ISOLatin1AccentFilterFactory"/>
<filter class="solr.RemoveDuplicatesTokenFilterFactory"/>
<filter class="solr.SnowballPorterFilterFactory"
language="English"/>
</analyzer>
</fieldType>
<field name="product_name" type="text_no_stopwords_en" indexed="true"
stored="true"/>
<field name="product_name_un" type="string_ignore_case" indexed="true"
stored="true"/>
<copyField source="product_name" dest="product_name_un"/>
I'm using dismax to search in both of them at the same time:
"defType=dismax&qf=product_name product_name_un^2.0". (this is done to bring
on top of the results the products which name _equals_ the entered
criteria).
1. When I'm searching for the phrase (two or more keywords), e.g. <blue
car>, the input string is tokenized and even I have in the index
product_name_un="blue car", the "product_name_un^2.0" part of the dismax
config has no effect.
2. When I enter <"blue car"> (in quotas) the string is not tokenized and
"product_name_un^2.0" part works, but nothing could be found in product_name
field.
I.e. there is no way to have a proper search against two fields at the same
time. The workaround that I found is using "bq" parameter for specifying the
boost query for search in field product_name_un. But I don't think that this
should be the only solution.
Another note, related to that: when I set as a default field for search
product_name_un, and query with the ../select/?q=blue car&rows=10&... I got
empty results despite the fact that I have "blue car" value in the index in
that field. I have to use quotas again to fix that... Shouldn't it determine
the field type and apply corresponding analyzers/tokenizers/etc.?
--
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