Java Development

[jiza68]

Does somebody experience with this function ( class PersistentContent , function public static byte[] convertEncodingToByteArray(Object encoding)  )  ,  I have some object stored at database and  , I get this object from database and used this object as parametr convertEncodingToByteArray function ..

part of code :

private static  final class Record implements Persistable

{

....

}

                      Record recGroup = new Record();

                     _dataGroup = (Vector)DatabaseGroup.getContents();

                    recGroup =  (Record) _dataGroupelementAt(index);
                                     
                    byte[] pole = PersistentContent.convertEncodingToByteArray(recGroup);

when I tried this function I got error message "

Exception thrown:

@5D32A000

java.lang.IllegalArgumentException

 "

Can you tell me, where is problem ..  ( Maybe I bad understend using this function .. )

regards

jiri bruza

[rihan007]

According to Blackberry APIs

public static byte[] convertEncodingToByteArray(Object encoding)

Converts a PersistentContent encoding of an object into a byte array.

the function will not accept an of Record type

[jiza68]

allright

I try create mybject based on the  object class ..

regards

jiri bruza

[jiza68]

I tried it again with parametr based on th Object class , but I have got same result ..   ( error message - invalid argument )

part of example code :

defination my object  :

 private static  final class MyObj extends Object implements Persistable
     {
         int number ;
         String text = "ahoj" ;
        
         public MyObj()
         {
             number = 6;
             }       
       }

using this object :

 MyObj aaa = new MyObj();
 byte[] pole = PersistentContent.convertEncodingToByteArray(aaa);

regards

jiri bruza

[rihan007]

You can pass an object which has been created by the encode function in the persistent content class.

[jiza68]

do you think  similar to this code ?

  public static Object encoding ;
    public static byte[] pole;

  MyObj aaa = new MyObj();
                    encoding = PersistentContent.encodeObject(aaa, true, true );
                     pole = PersistentContent.convertEncodingToByteArray(encoding);

is correct that encoding is object type ? ( because when I tried part of this code , I  have same problem as before )

or do you have some sample for this function please?

regards

Jiri Bruza