Setting ViewObject Stored Procedure Where Clause Param from Struts Action

Question

I adapted/used Steve's example to get stored procedure to populate my ViewObject. However, I could not retrieve any rows after passing whereClause value from Struts action. The param in execureQueryForCollection returns null.
What could be wrong. Thanks.
Here's my code.
ViewObjectImpl:
package org.adb.sls.model;
import java.math.BigDecimal;
import java.sql.CallableStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Timestamp;
import java.sql.Types;
import oracle.jbo.JboException;
import oracle.jbo.domain.Date;
import oracle.jbo.domain.Number;
import oracle.jbo.server.DBTransaction;
import oracle.jbo.server.ViewObjectImpl;
import oracle.jbo.server.ViewRowImpl;
import oracle.jbo.server.ViewRowSetImpl;
import oracle.jdbc.driver.OracleCallableStatement;
import oracle.jdbc.driver.OracleTypes;
// --- File generated by Oracle ADF Business Components Design Time.
// --- Custom code may be added to this class.
public class ViewApplicableLoanTypesImpl extends ViewObjectImpl
* PLSQL block that will execute the REF_CURSOR
private static final String SQL =
"begin ? := sls_loan_types_pkg.get_applcbl_staff_lns_fn(?); end;";
* PLSQL block that will count the REF_CURSOR returned rows
private static final String COUNTSQL =
"begin ? := sls_loan_types_pkg.get_count_applcbl_staff_lns_fn(?); end;";
* This is the default constructor (do not remove)
public ViewApplicableLoanTypesImpl()
* Overridden framework method.
* Wipe out all traces of a built-in query for this VO
protected void create() {
getViewDef().setQuery(null);
getViewDef().setSelectClause(null);
setQuery(null);
* Overidden framework method
protected void executeQueryForCollection(Object qc, Object[] params, int noUserParams)
// input parameter is employee number
String employeeNumber = null;
if (params != null) {
employeeNumber = (String) params[0];
} else
System.out.println("param is null");
storeNewResultSet(qc,retrieveRefCursor(qc,employeeNumber));
super.executeQueryForCollection(qc, params, noUserParams);
protected ViewRowImpl createRowFromResultSet(Object qc, ResultSet rs)
* We ignore the JDBC ResultSet passed by the framework (null anyway) and
* use the resultset that we've stored in the query-collection-private
* user data storage
rs = getResultSet(qc);
* Create a new row to populate
ViewRowImpl r = createNewRowForCollection(qc);
try {
* Populate new row by attribute slot number for current row in Result Set
populateAttributeForRow(r,0, nullOrNewNumber(rs.getBigDecimal(1)));
populateAttributeForRow(r,1, nullOrNewNumber(rs.getBigDecimal(2)));
populateAttributeForRow(r,2, rs.getString(3));
populateAttributeForRow(r,3, nullOrNewNumber(rs.getBigDecimal(4)));
populateAttributeForRow(r,4, rs.getString(5));
catch (SQLException s) {
throw new JboException(s);
return r;
protected boolean hasNextForCollection(Object qc)
ResultSet rs = getResultSet(qc);
boolean nextOne = false;
try {
nextOne = rs.next();
* When were at the end of the result set, mark the query collection
* as "FetchComplete".
if (!nextOne) {
setFetchCompleteForCollection(qc, true);
* Close the result set, we're done with it
rs.close();
catch (SQLException s) {
throw new JboException(s);
return nextOne;
protected void releaseUserDataForCollection(Object qc, Object rs)
* Ignore the ResultSet passed in since we've created our own.
* Fetch the ResultSet from the User-Data context instead
ResultSet userDataRS = getResultSet(qc);
if (userDataRS != null) {
try {
userDataRS.close();
catch (SQLException s) {
/* Ignore */
super.releaseUserDataForCollection(qc, rs);
public long getQueryHitCount(ViewRowSetImpl viewRowSet)
Object[] params = viewRowSet.getParameters(true);
String id = (String)params[0];
CallableStatement st = null;
try {
st = getDBTransaction().createCallableStatement(COUNTSQL,DBTransaction.DEFAULT);
* Register the first bind parameter as our return value of type CURSOR
st.registerOutParameter(1,Types.NUMERIC);
* Set the value of the 2nd bind variable to pass id as argument
if (id == null) st.setNull(2,Types.VARCHAR);
else st.setString(2,id);
st.execute();
return st.getLong(1);
catch (SQLException s) {
throw new JboException(s);
finally {try {st.close();} catch (SQLException s) {}}
* Return a JDBC ResultSet representing the REF CURSOR return
* value from our stored package function.
private ResultSet retrieveRefCursor(Object qc,String id) {
CallableStatement st = null;
try {
st = getDBTransaction().createCallableStatement(SQL,DBTransaction.DEFAULT);
* Register the first bind parameter as our return value of type CURSOR
st.registerOutParameter(1,OracleTypes.CURSOR);
* Set the value of the 2nd bind variable to pass id as argument
if (id == null) st.setNull(2,Types.VARCHAR);
else st.setString(2,id);
st.execute();
ResultSet rs = ((OracleCallableStatement)st).getCursor(1);
* Make this result set use the fetch size from our View Object settings
rs.setFetchSize(getFetchSize());
return rs ;
catch (SQLException s) {
s.printStackTrace();
throw new JboException(s);
finally {try {st.close();} catch (SQLException s) {}}
* Store a new result set in the query-collection-private user-data context
private void storeNewResultSet(Object qc, ResultSet rs) {
ResultSet existingRs = getResultSet(qc);
// If this query collection is getting reused, close out any previous rowset
if (existingRs != null) {
try {existingRs.close();} catch (SQLException s) {}
setUserDataForCollection(qc,rs);
hasNextForCollection(qc); // Prime the pump with the first row.
* Retrieve the result set wrapper from the query-collection user-data
private ResultSet getResultSet(Object qc) {
return (ResultSet)getUserDataForCollection(qc);
* Return either null or a new oracle.jbo.domain.Date
private static Date nullOrNewDate(Timestamp t) {
return t != null ? new Date(t) : null;
* Return either null or a new oracle.jbo.domain.Number
private static Number nullOrNewNumber(BigDecimal b) {
try {
return b != null ? new Number(b) : null;
catch (SQLException s) { }
return null;
Struts Action
package org.adb.sls.view;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import oracle.jbo.ApplicationModule;
import oracle.jbo.ViewObject;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import oracle.adf.model.binding.DCDataControl;
import oracle.adf.model.bc4j.DCJboDataControl;
import oracle.jbo.html.BC4JContext;
public class IndexAction extends DefaultADFAction
protected ActionForward performActionLogic(ActionMapping mapping,
ActionForm form, HttpServletRequest request,
HttpServletResponse response)
throws Exception {
try {    
ApplicationModule am = getApplicationModule("SLSApplicableLoanTypesDataControl", request);
if (am == null)
System.out.println("am is null");
ViewObject vo = am.findViewObject("ViewApplicableLoanTypes");
vo.setWhereClauseParam(0,request.getSession().getAttribute("SSO_EMPLOYEE_NUMBER"));
vo.executeQuery();
} catch (Exception e)
e.printStackTrace();
return mapping.findForward("success");
Struts Config
<form-beans>
<form-bean name="DataForm" type="oracle.adf.controller.struts.forms.BindingContainerActionForm"/>
</form-beans>
<action-mappings>
<action path="/index" className="oracle.adf.controller.struts.actions.DataActionMapping" type="org.adb.sls.view.IndexAction" name="DataForm" unknown="false">
<set-property property="modelReference" value="indexUIModel"/>
<forward name="success" path="/home.do"/>
</action>
<action path="/home" className="oracle.adf.controller.struts.actions.DataActionMapping" type="oracle.adf.controller.struts.actions.DataForwardAction" name="DataForm" parameter="/index.uix" unknown="true">
<set-property property="modelReference" value="indexUIModel"/>
</action>
</action-mappings>

Answer 1

I just found the solution. I've overridden setWhereClause method.
public void setWhereClauseParams(Object[] values)
ViewObjectImpl vo = (ViewObjectImpl) super.getViewObject();
vo.setWhereClauseParam(0,values[0]);
}