NullPointer from constructor of oracle.sql.ARRAY

Question

This is a strange one, I'm hoping someone has seen this before.
I'm seeing a nullpointer exception from the contructor of ARRAY(ArrayDescriptor, Connection, Object)
This occurs when I'm trying to make a call from an application module to a stored procedure with custom database types.
This seems to work fine in the embedded OC4J instance but fails when deployed to an application server on linux. The version is 10.1.2.
thanks for your help.
Joel
Here is the part of the stack trace:
java.lang.NullPointerException
     at oracle.jdbc.driver.PhysicalConnection.isDescriptorSharable(PhysicalConnection.java:5078)
     at com.evermind.sql.OracleConnectionBCELProxy__oracle_jdbc_driver_T4CConnection__SQLBCELProxy.isDescriptorSharable()
     at oracle.sql.ARRAY.<init>(ARRAY.java:118)
     at fastenal.website.model.services.products.ProductsServiceImpl.getPrices(ProductsServiceImpl.java:121)
and relevant source code:
public ProductPrices[] getPrices(String[] skus, Number accountNumberId, Number userId, Number catalogId){
OracleCallableStatement st = null;
try {
Connection con = getCurrentConnection();
System.out.println(con.getClass().toString() );
// Create the type object
Map map = con.getTypeMap();
//map.put("SKU_DETAIL_TYPE", Class.forName("fastenal.integration.ws.products.ProductDetailSqlType"));
map.put("WEB_PRICE_TYPE", ProductPriceSqlType.class);
con.setTypeMap(map);
ProductPriceSqlType[] pricesSql = new ProductPriceSqlType[skus.length];
for (int i = 0; i < skus.length; i++) {
pricesSql[i] = new ProductPriceSqlType("WEB_PRICE_TYPE", 0d, 0d, 0d, skus, null);
//ProductDetailSqlType productsSQL = new
ArrayDescriptor arrayDesc = ArrayDescriptor.createDescriptor("WEB_PRICE_TYPE_ARRAY", con);
ARRAY prices = new ARRAY(arrayDesc, con, pricesSql);
st = (OracleCallableStatement)getDBTransaction().createCallableStatement( PRICING_PLSQL
, DBTransaction.DEFAULT);
st.registerOutParameter(1, Types.ARRAY, "WEB_PRICE_TYPE_ARRAY");
st.setARRAY(2, prices);
//st.setString(3, strAccountNumber);
if (accountNumberId!=null){
st.setInt(3, accountNumberId.intValue() );
}else{
st.setNull(3, Types.NUMERIC );
if (userId!=null){
st.setInt(4, userId.intValue() );
}else{
st.setNull(4, Types.NUMERIC );
if (catalogId!=null){
st.setInt(5, catalogId.intValue() );
}else{
st.setNull(5, Types.NUMERIC );
st.execute();
prices = st.getARRAY(1);
Object[] retVals = (Object[])prices.getArray();
ProductPrices[] prodPrices = new ProductPrices[retVals.length];
for (int i = 0; i < retVals.length; i++) {
ProductPrices currPrices = new ProductPrices();
ProductPriceSqlType sqlType = (ProductPriceSqlType)retVals[i];
Double customPrice;
if (sqlType.getCustomPrice()!=null){
customPrice = new Double(sqlType.getCustomPrice().doubleValue() );
}else{
customPrice=null;
Double promoPrice;
if (sqlType.getPromoPrice()!=null){
promoPrice = new Double(sqlType.getPromoPrice().doubleValue() );
}else{
promoPrice=null;
Double wholeSalePrice;
if (sqlType.getWholeSalePrice()!=null){
wholeSalePrice = new Double(sqlType.getWholeSalePrice().doubleValue() );
}else{
wholeSalePrice=null;
currPrices.setCustomPrice( customPrice );
currPrices.setPromotionalPrice(promoPrice );
currPrices.setWholesalePrice(wholeSalePrice);
currPrices.setSku(sqlType.getSku());
currPrices.setPromoEndDate(sqlType.getPromoEndDate());
prodPrices[i] = currPrices;
}//end for
return prodPrices;
}catch (SQLException s) {
throw new JboException(s);
}//end catch
finally {
if (st != null) try { st.close(); } catch (SQLException s2) {}
}//end finally
* Helper method to get the current connection.
* As specified by
* re:BC4J: How get Connection from Application Module
* @return
private Connection getCurrentConnection() {
Statement st = null;
try {
st = getDBTransaction().createStatement(0);
return st.getConnection();
catch (SQLException s) {
s.printStackTrace();
return null;
finally {
if (st != null) try { st.close(); } catch (SQLException s2) {}

Answer 1

Avi, thanks for your response. The connection is obtained from a BC4J appmod, which ultimately comes from a pooled datasource.
When I look at the implementation class in the embeded OC4J environment it is com.evermind.sql.OracleConnectionBCELProxy__com_evermind_sql_OrionCMTConnection__SQLBCELProxy. The call to ARRAY works in this environment.
On the application server the runtime implementation of the connection is com.evermind.sql.ConnectionBCELProxy__com_evermind_sql_OrionCMTConnectionFinalize__SQLBCELProxy. This fails with the exception in the original post.
In both environments I can successfuly cast to an OracleConnection so I'm pretty sure both implementaion classes are subclasses of OracleConnection.
Both environments are 10.1.2.
thanks for your help so far.
jk