What version of OpenJPA and what DB are you running against?
On Sat, May 28, 2011 at 5:40 AM, Walter Rugora <[email protected]> wrote:
> Hi there,
>
> so far I never had issues to read out of an array of bytes to display an
> image. Within the entity class the image field is specified as:
> @Lob
> private byte[] image;
>
> I read and write an image via:
> public Image getImage() {
> Data.EM.refresh(this);
> InputStream in = new ByteArrayInputStream(this.image);
> BufferedImage bu = null;
> try {
> bu = javax.imageio.ImageIO.read(in);
> } catch (Exception e) {
> }
>
> return bu;
> }
>
> public void setImage(Image image) {
> try {
> BufferedImage bu = new BufferedImage(image.getWidth(null),
> image.getHeight(null), BufferedImage.TYPE_INT_RGB);
> Graphics2D g2 = bu.createGraphics();
> g2.drawImage(image, 0, 0, null);
> ByteArrayOutputStream baos = new ByteArrayOutputStream();
> ImageIO.write(bu, "png", baos);
> this.image = baos.toByteArray();
> baos.close();
> } catch (IOException ex) {
>
> Logger.getLogger(Imagereference.class.getName()).log(Level.SEVERE, null,
> ex);
> }
> }
>
> What is disturbing is that I suddenly cannot read the image from the
> derby database via OpenJPA. What I get in return as soon as I invoke
> getImage is an exception (Exception in thread "AWT-EventQueue-0"
> java.lang.IndexOutOfBoundsException: Index: 0, Size: 0). When debugging
> it shows that getImage (this.image is NULL) returns Null. However, when
> I read out the data of the image column in the database table it is
> clearly not null but filled with an array of bytes. Btw. all other
> fields can be accessed without any problem via OpenJPA.
>
> Did someone experienced a similar problem?
>
> Thanks,
> Walter
>
>
--
*Rick Curtis*
