implements RecordListener : RecordListener « javax.microedition.rms « Java by API

1. Java by API
2. javax.microedition.rms
3. RecordListener

implements RecordListener

 
  


import javax.microedition.midlet.MIDlet;
import javax.microedition.rms.RecordComparator;
import javax.microedition.rms.RecordFilter;
import javax.microedition.rms.RecordListener;
import javax.microedition.rms.RecordStore;
import javax.microedition.rms.RecordStoreNotOpenException;

class TestDB implements RecordListener {
  public void recordAdded(RecordStore rs, int id) {
    try {
      System.out.println(rs.getName() + " added record " + id);
    } catch (RecordStoreNotOpenException e) {
    }
  }

  public void recordChanged(RecordStore rs, int id) {
    try {
      System.out.println(rs.getName() + " changed record " + id);
    } catch (RecordStoreNotOpenException e) {
    }
  }

  public void recordDeleted(RecordStore rs, int id) {
    try {
      System.out.println(rs.getName() + " removed record " + id);
    } catch (RecordStoreNotOpenException e) {
    }
  }
}

class TestFilter implements RecordFilter {
  public boolean matches(byte[] rec) {
    String r = new String(rec);
    return ((r.charAt(0) == 'a') || (r.charAt(0) == 'A'));
  }
}

class TestComparator implements RecordComparator {

  public int compare(byte[] rec1, byte[] rec2) {
    String r1 = new String(rec1);
    String r2 = new String(rec2);
    if (r1.compareTo(r2) > 0)
      return (RecordComparator.FOLLOWS);
    else if (r1.compareTo(r2) < 0)
      return (RecordComparator.PRECEDES);
    else
      return (RecordComparator.EQUIVALENT);
  }
}

public class J2METestDBTest extends MIDlet {

  public void startApp() {
    try {
      RecordStore anRMS = RecordStore.openRecordStore("TestRMS", true);
      anRMS.addRecordListener(new TestDB());

      String test = "This is a test";
      byte[] b = test.getBytes();
      anRMS.addRecord(b, 8, 6);
      anRMS.addRecord(b, 5, 2);
      RecordComparator rc = new TestComparator();
      byte[] r1 = anRMS.getRecord(1);
      byte[] r2 = anRMS.getRecord(2);
      System.out.println(rc.compare(r1, r2));

    } catch (Exception e) {
    }
  }

  public void pauseApp() {
  }

  public void destroyApp(boolean unconditional) {
  }

}

   
  

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