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Revision as of 05:09, 30 July 2013 by hamishwillee (Talk | contribs)

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Record update with RecordStore.setRecord() fails in Series 40 (Known Issue)

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Created: User:Technical writer 1 (21 Aug 2008)
Last edited: hamishwillee (30 Jul 2013)

Description

RecordStore.setRecord() fails to reuse the existing reserved memory, resulting in 'Out of Memory exception' application error notification or the program exiting directly without any notification at all.

How to reproduce

  1. Implement a test MIDlet using the following code:
     import javax.microedition.midlet.*;
    import javax.microedition.rms.RecordStore;
    import javax.microedition.lcdui.*;
     
    public class ErrorDemo extends MIDlet {
     
    //.. pauseApp() and destroyApp() excluded for code brevity
     
    protected void startApp() throws MIDletStateChangeException {
     
    boolean newrun = false;
    Form f = new Form("Debug");
    Display.getDisplay( this ).setCurrent( f );
     
    try {
     
    f.append("Starting...");
     
    RecordStore r = RecordStore.openRecordStore( "dummy" , true );
     
    int cntr, cntr2;
    byte[] empty = new byte[512];
     
    if( r.getNextRecordID() < 2 ) { // empty RMS?
     
    newrun = true;
    cntr = 1;
     
    while( r.getSizeAvailable() > 1024 ) {
     
    r.addRecord(empty, 0, 512); // Fill the RMS
     
    cntr++;
     
    }
     
    } else cntr = r.getNextRecordID() - 1;
     
    f.append( "Replacing those records" );
     
    StringItem i = new StringItem( "Record No", "" );
     
    f.append( i );
     
    // Replacing all of the records
     
    for( cntr2=1; cntr2<cntr; cntr2++ ) {
     
    i.setText( String.valueOf( cntr2 ) );
     
    if( !newrun ) Thread.sleep(1000);
     
    r.setRecord(cntr2, empty, 0, 512);
     
    }
    } catch( Exception e ) {}
     
    f.append("Done"); // Record (re)placing finished.
     
    try { Thread.sleep(5000); } // Waiting for a while before exiting the MIDlet.
     
    catch( Exception e ){}
     
    notifyDestroyed();
     
    }
    }
  2. Launch the MIDlet, let it write the records, and exit the MIDlet.
  3. Launch the MIDlet again. The described issue occurs.

Solution

This issue has been fixed starting from Series 40 5th Edition, Feature Pack 1.

This page was last modified on 30 July 2013, at 05:09.
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