protected String buildQualifierRegex(String qualifierValue){
  StringBuilder sb=new StringBuilder();
  sb.append("^");
  sb.append(qualifierValue);
  sb.append("$");
  return sb.toString();
}

protected String buildQualifierRegex ( String qualifierValue ) { StringBuilder sb = new StringBuilder ( ) ; sb . append ( "^" ) ; sb . append ( qualifierValue ) ; sb . append ( "$" ) ; return sb . toString ( ) ; }
just used for like and not_like
