A cursor implementation must implement this in order to modify the search
expression for cursor. After this is called, the position and total will
be recalculated.
If the cursor implementation is unable to deal with the #EContactFields
referred to in sexp, then an %E_CLIENT_ERROR_INVALID_QUERY error should
be set to indicate this.
Method type for #EDataBookCursorClass.set_sexp()
A cursor implementation must implement this in order to modify the search expression for
cursor. After this is called, the position and total will be recalculated.If the cursor implementation is unable to deal with the #EContactFields referred to in
sexp,then an %E_CLIENT_ERROR_INVALID_QUERY error should be set to indicate this.