Retrieving external keys from the result of the search.
<p>
Takes a pattern that is used in order to generate the key names of the result of sorting. The
key names are obtained substituting the first occurrence of * with the actual value of the
elements on the list.
<p>
The pattern for a normal key/value pair is "field*" and for a value in a hash
"field*->fieldname".
<p>
To get the list itself use the char # as pattern.
@param patterns
@return the SortingParams Object
Retrieving external keys from the result of the search. <p> Takes a pattern that is used in order to generate the key names of the result of sorting. The key names are obtained substituting the first occurrence of * with the actual value of the elements on the list. <p> The pattern for a normal key/value pair is "field*" and for a value in a hash "field*->fieldname". <p> To get the list itself use the char # as pattern. @param patterns @return the SortingParams Object