Java™ 2 Micro Edition Application Development

Persistent Storage: The LogStorage Class

Beneath the DayLog class for storing the log of a single day, we need another class to store all the DayLogs persistently. The LogStorage class uses a record store for that purpose.

In the constructor, the record store with the name "BloodSugarLog" is opened and assigned to the days object variable:

import javax.microedition.rms.*;
import java.util.*;
import java.io.*;
import java.util.*;


public class LogStorage {

    RecordStore days;
    public LogStorage () throws RecordStoreException {
        days = RecordStore.openRecordStore ("BloodSugarLog", true);
    }
}

The most important functionality of the persistent storage is to provide efficient access to the day log of a specific date. If the logs are stored and put in ...