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From Lance Norskog <goks...@gmail.com>
Subject Re: Sorting fields of text_general fieldType
Date Fri, 03 Aug 2012 07:39:13 GMT
Give us some pairs of titles which sort the wrong way.

On Thu, Aug 2, 2012 at 10:06 AM, Anupam Bhattacharya
<anupamb82@gmail.com> wrote:
> The approach used to work perfectly.
>
> But recently i realized that it is not working for more than 300000 indexed
> records.
> I am using SOLR 3.5 version.
>
> Is there another approach to SORT a title field in proper alphabetical
> order irrespective of Lower case and Upper case.
>
> Regards
> Anupam
>
> On Thu, May 17, 2012 at 4:32 PM, Ahmet Arslan <iorixxx@yahoo.com> wrote:
>
>> > The title sort works in a strange manner because the SOLR
>> > server treats
>> > title string based on Upper Case or Lower Case String. Thus
>> > if we sort in
>> > ascending order, first the title with numeric shows up then
>> > the titles in
>> > alphabetical order which starts with Upper Case & after
>> > that the titles
>> > starting with Lowercase.
>> >
>> > The title field is indexed as text_general fieldtype.
>> >
>> > <field name="title" type="text_general" indexed="true"
>> > stored="true"/>
>>
>> Please see Otis' response http://search-lucene.com/m/uDxTF1scW0d2
>>
>> Simply create an additional field named title_sortable with the following
>> type
>>
>>  <!-- lowercases the entire field value, keeping it as a single token.  -->
>>     <fieldType name="lowercase" class="solr.TextField"
>> positionIncrementGap="100">
>>       <analyzer>
>>         <tokenizer class="solr.KeywordTokenizerFactory"/>
>>         <filter class="solr.LowerCaseFilterFactory" />
>>         <filter class="solr.TrimFilterFactory" />
>>       </analyzer>
>>     </fieldType>
>>
>> Populate it via copyField directive :
>>
>>   <copyField source="title" dest="title_sortable" maxChars="N"/>
>>
>> then &sort=title_sortable asc
>>
>>
>>



-- 
Lance Norskog
goksron@gmail.com

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