www.pudn.com > j2me_Mario.rar > LPSaveRecord.java

/** 
 * 
Title: lipeng
 
 * 
Description: 
 * You cannot remove this copyright and notice. 
 * You cannot use this file without the express permission of the author. 
 * All Rights Reserved
 
 * 
Copyright: lizhenpeng (c) 2004
 
 * 
Company: LP&P
 
 * @author lizhenpeng 
 * @version 1.1.0 
 * 
 
 * Revise History 
 * 2004.07.12 Add exception self description and revise exception description V1.1.0 
 * 
 
 */ 
 
package lipeng; 
 
import javax.microedition.rms.*; 
 
public class LPSaveRecord 
{ 
  private RecordStore rs; 
  private String rsName; 
  public LPSaveRecord(String name) 
  { 
    rsName=name; 
    try 
    { 
      if(existRecordStore(name)) 
      { 
        rs=RecordStore.openRecordStore(name,false); 
      } 
      else 
      { 
        rs=RecordStore.openRecordStore(name,true); 
      } 
    } 
    catch(RecordStoreNotFoundException e) 
    { 
      System.out.println("Open Record Error"); 
      System.out.println(e.toString()); 
    } 
    catch(Exception e) 
    { 
      System.out.println(e.toString()); 
    } 
  } 
 
  public void addRecord(byte[] rec) 
  { 
    try 
    { 
      rs.addRecord(rec,0,rec.length); 
    } 
    catch(Exception e) 
    { 
      System.out.println("Add Record Error"); 
      System.out.println(e.toString()); 
    } 
  } 
 
  public void close() 
  { 
    try 
    { 
      rs.closeRecordStore(); 
    } 
    catch(Exception e) 
    { 
      System.out.println("Close Record Error"); 
      System.out.println(e.toString()); 
    } 
  } 
 
  public boolean IsEmpty() 
  { 
    try 
    { 
      if(rs.getNumRecords()>0) 
      { 
        return false; 
      } 
      else 
      { 
        return true; 
      } 
    } 
    catch(Exception e) 
    { 
      System.out.println("Get Record Number Error"); 
      System.out.println(e.toString()); 
    } 
    return true; 
  } 
 
  public void SetRecord(int recordId,byte[] buffer) 
  { 
    try 
    { 
      rs.setRecord(recordId,buffer,0,buffer.length); 
    } 
    catch(Exception e) 
    { 
      System.out.println("Set Record Error"); 
      System.out.println(e.toString()); 
    } 
  } 
 
  public byte[] getRecord(int recordId) 
  { 
    byte buffer[]; 
    try 
    { 
      buffer=rs.getRecord(recordId); 
      return buffer; 
    } 
    catch(Exception e) 
    { 
      System.out.println("Get Record Error"); 
      System.out.println(e.toString()); 
    } 
    return null; 
  } 
 
  public void removeAll() 
  { 
    try 
    { 
      rs.deleteRecordStore(rsName); 
    } 
    catch(Exception e) 
    { 
      System.out.println("Remove All Record Error"); 
      System.out.println(e.toString()); 
    } 
  } 
 
  private boolean existRecordStore(String recordName) 
  { 
    boolean existRs=true; 
    RecordStore rsTemp=null; 
    try 
    { 
      rsTemp=RecordStore.openRecordStore(recordName,false); 
    } 
    catch(Exception e) 
    { 
      existRs=false; 
      System.out.println("Test Record Exist Error"); 
      System.out.println(e.toString()); 
    } 
    finally 
    { 
      try 
      { 
        rsTemp.closeRecordStore(); 
      } 
      catch(Exception e) 
      { 
        System.out.println("Close Record Error"); 
        System.out.println(e.toString()); 
      } 
    } 
    return existRs; 
  } 
}