JBO-25063: ...working set is not bound.

Question

Hi,
I am building a simple JSP input form using JDeveloper 10.1.2. I am following the directions in a tutorial /hands-on session, using my own schema. I have built a view object for a table, and when I try to drag it into a JSP page as an Input Form, when I try to run it, I get:
oracle.jbo.InvalidOperException: JBO-25063: Operation getCurrentRowSlot cannot be performed because the working set object is not bound.
Can anyone tell me what this means or what is wrong, and what I should change?
Thanks,
Phil

Answer 1

Repost.
Here's a section of the batch mode bc4j.log:
[221] Array.getInternalArray(281) Warning:No element type set on this array. Assuming java.lang.Object.
[222] RuntimeViewRowSetIteratorInfo.rangeRefreshed(1266) [RangeRefreshEvent: EmpArrayView1 start=0 count=3]
[223] Diagnostic.printStackTrace(405) java.io.NotSerializableException: oracle.sql.CharacterSet1Byte
     at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1054)
     at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java)
     at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1304)
     at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java)
     at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1052)
     at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:278)
=====> at oracle.jbo.domain.Array.writeObject(Array.java:748)
... [ much removed ] ...
NOTE [221] and [223].
It appears to work in batch mode, if you make a call to the array method: useElementType, i.e.
arr = new Array(descriptor,conn,names);
arr.useElementType( java.lang.String.class);
However, this method appears to be written incorrectly. IF I just change the array.java useElementType method to read:
public void useElementType( Class claz )
if ( mElemType == null )
mElemType = claz;
instead of:
public void useElementType(Class claz)
if (mElemType != null)
mElemType = claz;
it works.
I'm just trying to get some closure on this.