code: public void addScalarValueColumn(TableDefinition tableDef, String objID, String fieldName, String fieldValue) {
          addColumn(SpiderService.objectsStoreName(tableDef),
                    objID,
                    fieldName,
                    SpiderService.scalarValueToBinary(tableDef, fieldName, fieldValue));
      }
docs: Add the column needed to add or replace the given scalar field belonging to the
  object with the given ID in the given table.
  
  @param tableDef      {@link TableDefinition} of table that owns object.
  @param objID         ID of object.
  @param fieldName     Name of scalar field being added.
  @param fieldValue    Value being added in string form.