question: compare two object about result if v1 > v2 , return 1 if v1 = v2 , return 0 if v1 about rule if v1 is null , v2 is null , then return 0 if v1 is null , v2 is not null , then return -1 if v1 is not null , v2 is null , then return 1 return v1 . comparable #compareto object concode_field_sep PlaceHolder placeHolder concode_field_sep String nullStrToEmpty concode_elem_sep Long[] transformLongArray concode_elem_sep long[] transformLongArray concode_elem_sep Integer[] transformIntArray concode_elem_sep int[] transformIntArray concode_elem_sep boolean isEquals
target: int function ( V arg0 , V arg1 ) { return arg0 == null ? ( arg1 == null ? 0 : - 1 ) : ( arg1 == null ? 1 : ( ( Comparable ) arg0 ) . compareTo ( arg1 ) ) ; }