package datastore;

import java.util.*;
import java.io.*;

public interface Product
{
    String getMnemonic ();
    List<Customer> getCustomers (DsDate date)
        throws IOException;
    List<Document> getDocuments (DsDate date)
        throws IOException;
    List<CountType> getCountTypes (DsDate date)
        throws IOException;
    int getCount (int year, int month,
            Customer customer,
            Document document,
            CountType countType)
        throws IOException;
}