Error when to locate a row

Question

Hi,
My data are displayed on the table in master page using rowIterator over 4 VOs with 3 VLs.
I want to do create/edit/delete on the 4th VO. My application is using Struts/BC4J. In Action class, I pass "RowKey" to locate the Row selected by user. (Can I do that? I follows ToyStore example.)
Key k = new Key(new Object[]{jboRowKey});
I'm getting an error message as follows:
Error Message: JBO-26080: Error while selecting entity for FergasMthTransDetail
Error Message: ORA-01722: invalid number
oracle.jbo.DMLException: JBO-26080: Error while selecting entity for FergasMthTransDetail
     void oracle.jbo.server.OracleSQLBuilderImpl.doEntitySelect(oracle.jbo.server.EntityImpl, boolean)
          OracleSQLBuilderImpl.java:812
The FergasMthTransDetail is one of EO in the 4thVO.
Can anyone tell me what I did wrong.
Thanks.

Answer 1

thanks Arno.
On the Master page, I have something like,
<jbo:RowsetIterate datasource="dsTransDetail" >
<TD>
Edit / Delete
</TD>
</jbo:RowsetIterate>
on the Action class, I have:
String jboRowKey = request.getParameter("jboRowKey");
//Construct a key object with jboRowKey
Key k = new Key(new Object[]{jboRowKey});
//find the row by calling this
foundExistingRowWithKey(context,k);
//the function above is defined as
protected boolean foundExistingRowWithKey(BC4JContext context, Key k) {
ViewObject vo = context.getViewObject();
Row[] r = vo.findByKey(k,1);
if (r.length < 1) return false;
Row rowFound = r[0];
SO, What is the right type for jboRowKey? instead of the String.