eDismax parser and the mm parameter

[S.L]

Hi All,

I am planning to use the eDismax query parser in SOLR to give boost to
documents that have a phrase in their fields present. Now there is a mm
parameter in the edismax parser query , since the query typed by the user
could be of any length (i.e. >=1) I would like to set the mm value to 1 . I
have the following questions regarding this parameter.

   1. Is it set to 1 by default ?
   2. In my schema.xml the defaultOperator is set to "AND" should I set it
   to "OR" inorder for the edismax parser to be effective with a mm of 1?


Thanks in advance!