src/code/kalter/longflight/rms/RMS.java

   1 package code.kalter.longflight.rms;
   2
   3 import code.kalter.longflight.ByteArrayInputStream;
   4 import code.kalter.longflight.ByteArrayOutputStream;
   5 import javax.microedition.rms.InvalidRecordIDException;
   6 import javax.microedition.rms.RecordStore;
   7 import javax.microedition.rms.RecordStoreException;
   8
   9 /**
  10  * Удобная работа с RMS
  11  *
  12  * @author KalterFive
  13  */
  14 public class RMS {
  15
  16     public final RecordStore recordStore;
  17
  18     public RMS(String name, boolean createIfRecordStoreNotFound)
  19             throws RecordStoreException {
  20         recordStore = RecordStore.openRecordStore(name,
  21                 createIfRecordStoreNotFound);
  22     }
  23
  24     public ByteArrayInputStream get(int id) throws RecordStoreException,
  25             RecordNotFoundException {
  26         if (recordStore.getNumRecords() < id) {
  27             throw new RecordNotFoundException();
  28         }
  29         return new ByteArrayInputStream(recordStore.getRecord(id));
  30     }
  31
  32     /*
  33      * Если запись с номером не будет найдена, то массив байтов запишется в
  34      * новую запись, после последней
  35      */
  36     public void put(int id, ByteArrayOutputStream bytes)
  37             throws RecordStoreException {
  38         final byte[] array = bytes.toArray();
  39         final int length = array.length;
  40         try {
  41             recordStore.setRecord(id, array, 0, length);
  42         } catch (InvalidRecordIDException e) {
  43             recordStore.addRecord(array, 0, length);
  44         }
  45     }
  46
  47     public void close() throws RecordStoreException {
  48         recordStore.closeRecordStore();
  49     }
  50 }