Programmatic View Object

Question

I'm trying to create a programmatic view object from an Oracle Stored procedure that returns a single row containing Oracle Object Types. I created a Domain for my Oracle Object type called BillingInfo. Here is the code for my view object so far:
package billing;
import billing.common.BillingInfo;
import java.lang.Integer;
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 java.util.Date;
import java.text.SimpleDateFormat;
import oracle.jbo.JboException;
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 Business Components for Java.
public class BillingInfoViewImpl extends ViewObjectImpl
// billing info procedure call variables
private final static int BILLING_LOGGED_ON_USER_ID = 0;
private final static int BILLING_BILL_TO_USER_ID = 1;
private final static int BILLING_TRANSACTION_DATE = 2;
private final static int BILLING_TRANSACTION_DETAILS1 = 3;
private final static int BILLING_TRANSACTION_DETAILS2 = 4;
private final static int BILLING_TRANSACTION_DETAILS3 = 5;
private final static int BILLING_TRANSACTION_DETAILS4 = 6;
private final static int BILLING_TRANSACTION_DETAILS5 = 7;
private final static int BILLING_TRANSACTION_COUNT = 8;
private final static int BILLING_TOTAL_CHARGE_AMOUNT = 9;
private final static int BILLING_PAY_TYPE = 10;
private final static int BILLING_ERROR_MESSAGE = 11;
private final static int BILLING_ERROR_CODE = 12;
private final static int BILLING_RETURN_VALUE = 13; /*
* This is the PLSQL block that we will execute
private static final String SQL =
"begin ecs_jdbc_wrappers.get_billing_info_jdbc(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ? ,?, ?, ?);end;";
* This is the default constructor (do not remove)
public BillingInfoViewImpl() { }
* Overridden framework method.
* Executed when the framework needs to issue the database query for
* the query collection based on this view object. One view object
* can produce many related result sets, each potentially the result
* of different bind variable values. If the rowset in query is involved
* in a framework-coordinated master/detail viewlink, then the params array
* will contain one or more framework-supplied bind parameters. If there
* are any user-supplied bind parameter values, they will PRECEED the
* framework-supplied bind variable values in the params array, and the
* number of user parameters will be indicated by the value of the
* numUserParams argument.
protected void executeQueryForCollection(Object qc,Object[] params,int numUserParams) {
* If there are where-clause params they will be in the 'params' array.
* NOTE: Due to Bug#2828248 I have to cast to BigDecimal for now,
* ---- but this parameter value should be oracle.jbo.domain.Number type.
int sqlcode = 0; // statement sql code
String errorMessage = null; // statement error message
String loggedOnUserId = null; // IN VARCHAR2
String billToUserId = null; // IN VARCHAR2
Date transactionDate = new Date(); // IN DATE
BillingInfo transactionDetails1 = null; // IN OUT billing_info
BillingInfo transactionDetails2 = null;
BillingInfo transactionDetails3 = null;
BillingInfo transactionDetails4 = null;
BillingInfo transactionDetails5 = null;
int transDetailsCount = 0; // IN INTEGER
String payType = null; // IN VARCHAR2
if (params != null)
loggedOnUserId = (String)params[BILLING_LOGGED_ON_USER_ID];
System.out.println("USER ID:" + loggedOnUserId);
billToUserId = (String)params[BILLING_BILL_TO_USER_ID];
System.out.println("BILLED USER ID:" + billToUserId);
if (params[BILLING_TRANSACTION_DETAILS1] != null) {
System.out.println(params[BILLING_TRANSACTION_DETAILS1]);
transactionDetails1 = (BillingInfo)params[BILLING_TRANSACTION_DETAILS1];
transDetailsCount = transDetailsCount + 1;
if (params[BILLING_TRANSACTION_DETAILS2] != null) {
transactionDetails2 = (BillingInfo)params[BILLING_TRANSACTION_DETAILS2];
transDetailsCount = transDetailsCount + 1;
if (params[BILLING_TRANSACTION_DETAILS3] != null) {
transactionDetails3 = (BillingInfo)params[BILLING_TRANSACTION_DETAILS3];
transDetailsCount = transDetailsCount + 1;
if (params[BILLING_TRANSACTION_DETAILS4] != null) {
transactionDetails4 = (BillingInfo)params[BILLING_TRANSACTION_DETAILS4];
transDetailsCount = transDetailsCount + 1;
if (params[BILLING_TRANSACTION_DETAILS5] != null) {
transactionDetails5 = (BillingInfo)params[BILLING_TRANSACTION_DETAILS5];
transDetailsCount = transDetailsCount + 1;
payType = (String)params[BILLING_PAY_TYPE];
CallableStatement st = null;
try {
st = getDBTransaction().createCallableStatement(SQL,DBTransaction.DEFAULT);
* Set the value of the bind variables
st.setString(1, loggedOnUserId);
st.setString(2, billToUserId);
// Set Transaction Date to todays date
java.sql.Timestamp sqlTs = new java.sql.Timestamp(transactionDate.getTime());
st.setTimestamp(3, sqlTs);
System.out.println("TRANS DATE:" + sqlTs);
st.setObject(4, transactionDetails1);
if (transactionDetails2 == null) st.setNull(5, Types.STRUCT, "BILLING_INFO");
else st.setObject(5, transactionDetails1);
if (transactionDetails3 == null) st.setNull(6, Types.STRUCT, "BILLING_INFO");
else st.setObject(6, transactionDetails1);
if (transactionDetails4 == null) st.setNull(7, Types.STRUCT, "BILLING_INFO");
else st.setObject(7, transactionDetails1);
if (transactionDetails5 == null) st.setNull(8, Types.STRUCT, "BILLING_INFO");
else st.setObject(8, transactionDetails1);
st.setInt(9, transDetailsCount);
st.setString(11,payType);
* Register OUT paramters
st.registerOutParameter(4, Types.STRUCT, "BILLING_INFO");
st.registerOutParameter(5, Types.STRUCT, "BILLING_INFO");
st.registerOutParameter(6, Types.STRUCT, "BILLING_INFO");
st.registerOutParameter(7, Types.STRUCT, "BILLING_INFO");
st.registerOutParameter(8, Types.STRUCT, "BILLING_INFO");
st.registerOutParameter(10, Types.DOUBLE);
st.registerOutParameter(12, Types.VARCHAR);
st.registerOutParameter(13, Types.INTEGER);
st.registerOutParameter(14, Types.INTEGER);
// execute the stored procedure
st.execute();
// get the SQLCODE
sqlcode = st.getInt(13);
System.out.println("sqlcode returned:" + sqlcode);
errorMessage = st.getString(12);
System.out.println("Error Message:" + errorMessage);
catch (SQLException s) {
System.out.println("sqlcode returned:" + sqlcode);
System.out.println("Error Message:" + errorMessage);
throw new JboException(s);
finally {try {st.close();} catch (SQLException s) {}}
super.executeQueryForCollection(qc, params, numUserParams);
This almost works except when I try to print out the attributes I get an error. I beleive I have to override some of the view object framework methods. If so, how do I go about this? Is it the same methods overridden in this example Getting a View Object's Result Rows from a REF CURSOR? http://radio.weblogs.com/0118231/stories/2003/03/03/gettingAViewObjectsResultRowsFromARefCursor.html
Nat

Answer 1

Yes. only difference is that your VO will just have one row in it.