The lower case tokenizer considers white spaces and non-letters as delimiters, splits the input string at these delimiters, and then discards all delimiters. Finally, it converts all letters to lowercase.

Factory class: solr.LowerCaseTokenizerFactory

Arguments: None

Example:

<fieldType name="text_en" class="solr.TextField" positionIncrementGap="100">
 <analyzer>
 <tokenizer class="solr.LowerCaseTokenizerFactory"/>
 </analyzer>
</fieldType>

Input: Please send a mail at [email protected] by 12-Nov.

Output: please, send, a, mail, at, dharmesh, vasoya, example, com, by, nov

The input string was first split at white spaces and punctuation and then converted to lowercase.