Habe ma sowas für Hibernate gemacht. Das müsste das Gesuchte drin sein
[code=Java]public class ImageUserType implements UserType
{
private static Logger logger=Logger.getLogger(ImageUserType.class);
public int[] sqlTypes()
{
return new int[]
{
Types.BLOB
};
}
public Class returnedClass()
{
return Image.class;
}
public boolean isMutable()
{
return false;
}
public Object deepCopy(Object o) throws HibernateException
{
return o;
}
public Serializable disassemble(Object o) throws HibernateException
{
return (Serializable)o;
}
public Object assemble(Serializable o,Object arg1) throws HibernateException
{
return o;
}
public Object replace(Object o,Object arg1,Object arg2) throws HibernateException
{
return o;
}
public boolean equals(Object arg0,Object arg1) throws HibernateException
{
if(arg0==arg1)
{
return true;
}
if(arg0==null||arg1==null)
{
return false;
}
return arg0.equals(arg1);
}
public int hashCode(Object o) throws HibernateException
{
return o.hashCode();
}
public Object nullSafeGet(ResultSet rs,String[] names,Object arg2) throws HibernateException,SQLException
{
Blob blob=rs.getBlob(names[0]);
if(blob==null)
{
return null;
}
else
{
return convertByteToImage(blob.getBytes((long)1,(int)blob.length()));
}
}
public void nullSafeSet(PreparedStatement st,Object image,int index) throws HibernateException,SQLException
{
st.setBytes(index,convertImageToBlob((Image)image));
}
private byte[] convertImageToBlob(Image image)
{
if(image==null)
{
return null;
}
ByteArrayOutputStream baos=new ByteArrayOutputStream();
try
{
int width=image.getWidth(null);
int height=image.getHeight(null);
BufferedImage bi=new BufferedImage(width,height,BufferedImage.TYPE_INT_RGB);
bi.getGraphics().drawImage(image,0,0,null);
ImageIO.write(bi,"JPEG",baos);
}
catch(IOException ex)
{
logger.error("Fehler beim erzeugen des Bytearrays: "+ex.getMessage());
}
return baos.toByteArray();
}
private Image convertByteToImage(byte[] bytearray)
{
Image image=Toolkit.getDefaultToolkit().createImage(bytearray);
JFrame frm=new JFrame();
MediaTracker mt=new MediaTracker(frm);
mt.addImage(image,0);
try
{
mt.waitForAll();
}
catch(InterruptedException ex)
{
logger.error("Fehler beim erzeugen des Image: "+ex.getMessage());
}
return image;
}
}
[/code]
