Very Common Scenario - Insert new Rows whose primary Key is not in View Obj

Question

Question : How can you add new records when the primary key of the records are not present in view ? I am facing infinite loop for the below logic .
The View Object is derived from 2 entity object (tableA,tableB) . The view has created in such a way that tableA data is updatable and tableB is read only. The view contains all the unique records of tableA and tableB . i,e the SQL query returns all the existing records from tableA , and those are not in tableA picks from tableB . Therefore , the Sql Query returns the primary key of tableA as 0 for the records which are not present in tableA but exist in tableB .
there fore My sql qery like below
select A.P_ID, A.mapping_id, A.dataValue FROM tableA A
UNION select  0 P_ID ,  B.mapping_id , 0 dataValue From tableB  B ;
Now my challenge is how can to add those new records that taken from table B and insert to TableA ? I am getting an infinite loop for the below logic -
Below code has been written in my Managed bean -
public void addNewSelectedMappings(){
DCBindingContainer dcb = (DCBindingContainer)evaluateEL("#{bindings}");
DCIteratorBinding dciter =
dcb.findIteratorBinding("CustomView1Iterator");
ViewObject vo = dciter.getViewObject();
Row row = null;
while ((row = vo.getCurrentRow()) != null)
Number mappingId =
(oracle.jbo.domain.Number)row.getAttribute("mappingId");
java.lang.Number dataValue = ( java.lang.Number)row.getAttribute("dataValue ");
if(mappingId .equals(0)){
BindingContext bindingContext = BindingContext.getCurrent();
BindingContainer bindings = bindingContext.getCurrentBindingsEntry();
// call the client interface defined in the AM
OperationBinding methodWithArgs = (OperationBinding) bindings.get("insertNewRow");
//add argument
methodWithArgs.getParamsMap().put("mappingId",mappingId);
methodWithArgs.getParamsMap().put("dataValue ",dataValue);
methodWithArgs.execute();
vo.next();
Below code in my application module to execute -
+public String insertNewRow(oracle.jbo.domain.Number mappingId , java.lang.Number  dataValue){+
+try{+
SequenceImpl seq = new SequenceImpl("TableA_ID_SEQ", getDBTransaction());
oracle.jbo.domain.Number  seqNextval = seq.getSequenceNumber();
System.out.println(" seqNextval " seqNextval);+
ViewObject vo = this.getCustomView1();
Row r = vo.createRow();
r.setAttribute("P_Id", seqNextval);*
r.setAttribute("mappingId ", mappingId );
r.setAttribute("dataValue", dataValue);
vo.insertRow(r);
this.getDBTransaction().commit();
+} catch (oracle.jbo.TooManyObjectsException tmoe) {+
System.out.println(" eorrr......"tmoe);+
return "error";
+} catch ( RowAlreadyDeletedException rd) {+
System.out.println(" Inside RowAlreadyDeletedException ");
return "RowAlreadyDeletedException";
+}+
return "success";
+}+

Answer 1

Hi ,
Can some one please help me out . Just to simplify the question , I have a mappings table and a Master table .
All the user selected items should save in the Mapping table . let say , there is a table name Products . User selects the products and that should save in the User product mapping table .
I want to show the user selected products and available products in a single view . also , want to update the mappings table based on user selection .
i m using jdev 11.1.1.5 .