recorddb.java

一个j2me游戏开发引擎

// Decompiled by Jad v1.5.7g. Copyright 2000 Pavel Kouznetsov.
// Jad home page: http://www.geocities.com/SiliconValley/Bridge/8617/jad.html
// Decompiler options: packimports(3) fieldsfirst ansi 

package mmae.util;

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

// Referenced classes of package mmae.util:
//            Tool

public class RecordDB
{

    private RecordStore a;
    private String b;

    public RecordDB()
    {
    }

    public static void deleteStore(String s)
    {
        try
        {
            RecordStore.deleteRecordStore(s);
        }
        catch(Exception exception)
        {
            System.out.println(s + " - " + exception.getMessage());
        }
    }

    public void open(String s)
    {
        b = s;
        try
        {
            a = RecordStore.openRecordStore(b, true);
        }
        catch(RecordStoreException recordstoreexception)
        {
            System.out.println("open " + b + " error:" + recordstoreexception.getMessage());
        }
    }

    public void close()
    {
        try
        {
            a.closeRecordStore();
        }
        catch(RecordStoreNotOpenException recordstorenotopenexception) { }
        catch(RecordStoreException recordstoreexception)
        {
            System.out.println("close " + b + " error:" + recordstoreexception.getMessage());
        }
    }

    public int getNumRecords()
    {
        int i = 0;
        try
        {
            i = a.getNumRecords();
        }
        catch(RecordStoreNotOpenException recordstorenotopenexception)
        {
            System.out.println("getNumRecord error:" + recordstorenotopenexception.getMessage());
        }
        return i;
    }

    public int addRecord(String s)
    {
        int i = 0;
        ByteArrayOutputStream bytearrayoutputstream = new ByteArrayOutputStream();
        DataOutputStream dataoutputstream = new DataOutputStream(bytearrayoutputstream);
        try
        {
            dataoutputstream.writeUTF(s);
            byte abyte0[] = bytearrayoutputstream.toByteArray();
            i = a.addRecord(abyte0, 0, abyte0.length);
        }
        catch(Exception exception)
        {
            System.out.println("Engine Error:addRecord");
        }
        return i;
    }

    public String getRecord(int i)
    {
        String s = null;
        try
        {
            byte abyte0[] = a.getRecord(i);
            ByteArrayInputStream bytearrayinputstream = new ByteArrayInputStream(abyte0);
            DataInputStream datainputstream = new DataInputStream(bytearrayinputstream);
            s = datainputstream.readUTF();
        }
        catch(Exception exception)
        {
            System.out.println("Engine Error:getRecord");
        }
        return s;
    }

    public void setRecord(int i, String s)
    {
        ByteArrayOutputStream bytearrayoutputstream = new ByteArrayOutputStream();
        DataOutputStream dataoutputstream = new DataOutputStream(bytearrayoutputstream);
        try
        {
            dataoutputstream.writeUTF(s);
            byte abyte0[] = bytearrayoutputstream.toByteArray();
            a.setRecord(i, abyte0, 0, abyte0.length);
        }
        catch(Exception exception) { }
    }

    public void deleteRecord(int i)
    {
        try
        {
            a.deleteRecord(i);
        }
        catch(Exception exception) { }
    }

    public String getField(String s, int i, String s1)
    {
        return Tool.getField(s, i, s1);
    }
}