private String columnName;
private Delta delta;
protected void setupDecorator(String[] arguments) throws InvalidInputException {
if (arguments.length != 3) {
throw new InvalidInputException("Column name, Data type and Delta Value must be specified");
}
columnName = arguments[0];
delta = new Delta(arguments[1], arguments[2]);
summary.put(COLUMN_NAME, columnName);
summary.put(DELTA, delta);