ViewLink Accessor returning null when VO has a BindParameter

Question

I have DeptView and EmpView that is link with a DempEmpViewLink. the link is two way so DeptView has a RowIterator Viewlink accessor and EmpView has a Row ViewLInk accessor.
However inside the employeViewRow code, I always get a Null value when I access the Dept accessor.
//inside Employee View Row.java
Row row = this.getDeptView(); //returns null
...This happens when The DeptView has a bindvariable because I need to filter the DeptView so I have a where clause on the SQL statement. However, when I remove the whereclause and the bindvariable, the Dept ViewLInk accessor returns the correct row.
regards,
Anton

Answer 1

Hi Chris,
My scenario is actually a Invoice Header and Details screen.
I have a HeaderView, DetailsView, and a HeaderDetailLink defined by a Composition Assoc. The headerView has a BindParameter on it. So on my page, I can view/navigate invoices and its details. but at the same time using the same viewobjects and same page, I need to be able to create and save a record on the header and details at the same time by just one Commit/Save. (Similar to a Forms application (header Form, and Details table).
On pageload i execute a methodaction that inserts a row on the header and the detail at the same time. Then on the jsp page, I put some values on the header. Next i put a value on a fieldA on the detail. But when I put a value on fieldA, I need to compute the value of fieldB on the detail based on fieldA and a field of the Header row, fieldHeader.
So to compute fieldB, I put a code on the settermethod of fieldA in the DetailRowImpl.java file:
//detailRowImp.java, setFieldA()
public void setFieldA(Number value) {
setAttributeInternal(FIELDA, value);
... Row row = getHeaderRow(); //returns null
Number fieldbValue = compute(value, row.getAttribute("FieldC")); //NullPointerException
}What are your thoughts? any suggestions?
regards,
Anton