I am getting the following exception when trying to save records in a table using a loop.

Error 500: a different object with the same identifier value was already associated with the session:


heres the java code
for (int n=0; n < records; n++){
BOLDetails bd = new BOLDetails();
bd.setRowID(System.currentTimeMillis());
bd.setBolNumber((String)request.getParameter("BOLNum"));
bd.setOrderNum((String)request.getParameter("orderNum" + n));
bd.setSku((String)request.getParameter("sku" + n ));
bd.setShipQuan((String) request.getParameter("toship" + n ) );
ses.save(bd);
}

heres the XML
<class name="shipping.BOL.BOLDetails" table="MTBOLDetails">
<id name="rowID" type="string" unsaved-value="null" >
<column name="RowID" sql-type="char(50)" not-null="true"/>
<generator class="assigned"/>
</id>
<property name="bolNumber">
<column name="BOLnum" sql-type="char(20)" not-null="true"/>
</property>
<property name="orderNum">
<column name="OrderNum" sql-type="char(20)" not-null="true"/>
</property>
<property name="sku">
<column name="SKU" sql-type="varchar(25)" not-null="true"/>
</property>
<property name="shipQuan">
<column name="ShipQuantity" sql-type="int" not-null="true"/>
</property>
</class>

any help would be appreciated. Thanks

Probably you are doing just that: The Object generated in the second iteration has the same id as your previous object. I would strongly suggest to use another way to generate your keys the best way is to let Hibernate generate your keys, if you want to keep it simple, use generator class="increment"

thanks