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ujjwalak
 Post subject: Getting ClassCastException on id for session.save
PostPosted: Wed Apr 19, 2006 5:08 pm 
Newbie

Joined: Fri Jul 15, 2005 6:50 pm
Posts: 3
Location: Bay Area, California,USA
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Getting ClassCastException for the id. Please look at the following Order.java snippet. I have xdoclet annotations and I have also posted the Order.hbm generated using the xdoclet annotations.
<b>----------------------- -Order.java------------------------------------</b>
/**
* @hibernate.class table="MSL_ORDER" schema="MSL"
*/
public class Order extends BaseEntity {

/** order reference id */
/**
* @hibernate.id column="ORDER_REF_ID" type="long" generator-class="sequence"
* @hibernate.generator-param name="sequence" value="SEQ_MSL_ORDER_REF_ID"
*/
protected long orderRefId;

/** oracle order id
* @hibernate.property column="MSL_ORDER_NUMBER" type="string" length="100"
*
*/
protected String orderId;

/** Source Id ( e.g vip/ ctc)
* @hibernate.property column="SOURCE_ID" type="string" length="50"
*/
protected String sourceId;

/** Order status
* @hibernate.property column="STATUS" type="string" length="30"
*/
protected String status;

/** Final Price
* @hibernate.property column="FINAL_PRICE" type="double"
*/
}
-------------------end ---- -Order.java------------------------------------

<b>--------------------Order.hbm.xml------------------------------------</b>
<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">

<hibernate-mapping>
<class table="MSL_ORDER" name="com.verisign.webapps.services.common.Order" schema="MSL">
<id type="long" column="ORDER_REF_ID" access="field" name="orderRefId">
<generator class="sequence">
<param name="sequence">SEQ_MSL_ORDER_REF_ID</param>
</generator>
</id>
<property name="orderNumber" length="100" type="string" access="field" column="MSL_ORDER_NUMBER"/>
<property name="sourceId" length="50" type="string" access="field" column="SOURCE_ID"/>
<property name="status" length="30" type="string" access="field" column="STATUS"/>
<property name="finalPrice" type="double" access="field" column="FINAL_PRICE"/>
<property name="tax" type="double" access="field" column="TAX"/>
<property name="promoCode" length="30" type="string" access="field" column="PROMO_CODE"/>
<property name="currency" length="10" type="string" access="field" column="CURRENCY"/>
<property name="priceListName" length="240" type="string" access="field" column="PRICE_LIST_NAME"/>
<many-to-one column="CUSTOMER_REF_ID" foreign-key="FK_ORDER_CUSTOMER" access="field" cascade="save-update,persist" name="customer" class="com.verisign.webapps.services.common.Customer"/>
<many-to-one column="PAYMENT_REF_ID" foreign-key="FK_ORDER_PAYMENT" access="field" cascade="save-update,persist" name="payment" class="com.verisign.webapps.services.common.Payment"/>
<many-to-one column="SHIPPING_METHOD_REF_ID" foreign-key="FK_ORDER_SHIPPING_METHOD" access="field" cascade="save-update,persist" name="shippingMethod" class="com.verisign.webapps.services.common.ShippingMethod"/>
<list table="ORDER_PRODUCT" access="field" cascade="save-update,persist" name="products">
<key column="ORDER_REF_ID"/>
<list-index base="0" column="ORDER_PRODUCT_REF_ID"/>
<many-to-many column="PRODUCT_REF_ID" unique="true" class="com.verisign.webapps.services.common.Product"/>
</list>
<set access="field" cascade="none" name="processingErrors">
<key column="ERROR_REF_ID"/>
<one-to-many class="com.verisign.webapps.services.common.ProcessingError"/>
</set>
<property name="createdBy" length="50" type="string" access="field" column="CREATED_BY" update="false"/>
<property name="createDate" length="15" type="timestamp" access="field" column="CREATED_DATE" update="false"/>
<property name="updatedBy" length="50" type="string" access="field" column="UPDATED_BY"/>
<property name="updateDate" length="15" type="timestamp" access="field" column="UPDATED_DATE"/>
</class>
</hibernate-mapping>
-------------------end ---- -Order.hbm.xml------------------------------------


[b]Hibernate version:[/b] 3.1rc2 from the maven site.

[b]Mapping documents:[/b]

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-configuration
PUBLIC "-//Hibernate/Hibernate Configuration DTD//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory name="MSLSessionFactory">
<!-- connection properties -->
<property name="connection.datasource">MSL_TX_DS</property>

<!-- dialect for Oracle (any version) -->
<property name="dialect">org.hibernate.dialect.Oracle9Dialect</property>

<property name="hibernate.show_sql">true</property>
<property name="hibernate.jndi.url">t3://localhost:7001</property>
<property name="hibernate.jndi.class">weblogic.jndi.WLInitialContextFactory</property>

<property name="hibernate.max_fetch_depth">3</property>
<property name="hibernate.use_outer_join">false</property>
<property name="hibernate.connection.autocommit">false</property>


<mapping resource="Address.hbm.xml" />
<mapping resource="Billing.hbm.xml" />
<mapping resource="Contact.hbm.xml" />
<mapping resource="Customer.hbm.xml" />
<mapping resource="Order.hbm.xml" />
<mapping resource="Payment.hbm.xml" />
<mapping resource="ProcessingError.hbm.xml" />
<mapping resource="Product.hbm.xml" />
<mapping resource="Shipping.hbm.xml" />
<mapping resource="ShippingMethod.hbm.xml" />
</session-factory>
</hibernate-configuration>

[b]Code between sessionFactory.openSession() and session.close():[/b]
session.save(order);

[b]Full stack trace of any exception that occurs:[/b]

java.llang.ClassCastException: java.lang.Long

The exception is thrown from the session.save call

[b]Name and version of the database you are using:[/b] Oracle 9i

[b]The generated SQL (show_sql=true):[/b]
Hibernate: select SEQ_MSL_ORDER_REF_ID.nextval from dual

[b]Debug level Hibernate log excerpt:[/b]

""<DEBUG> <2006-04-19 14:10:32,133> <impl.SessionImpl> [opened session at timestamp: 4691890307411968]
""<DEBUG> <2006-04-19 14:10:32,135> <transaction.JDBCTransaction> [begin]
""<DEBUG> <2006-04-19 14:10:32,136> <jdbc.ConnectionManager> [opening JDBC connection]
""<DEBUG> <2006-04-19 14:10:32,136> <transaction.JDBCTransaction> [current autocommit status: true]
""<DEBUG> <2006-04-19 14:10:32,136> <transaction.JDBCTransaction> [disabling autocommit]
""<DEBUG> <2006-04-19 14:10:32,136> <jdbc.JDBCContext> [after transaction begin]
""<DEBUG> <2006-04-19 14:10:32,146> <def.DefaultSaveOrUpdateEventListener> [saving transient instance]
""<DEBUG> <2006-04-19 14:10:32,146> <jdbc.AbstractBatcher> [about to open PreparedStatement (open PreparedStatements: 0, globally: 0)]
""<DEBUG> <2006-04-19 14:10:32,146> <hibernate.SQL> [select SEQ_MSL_ORDER_REF_ID.nextval from dual]
""<DEBUG> <2006-04-19 14:10:32,148> <jdbc.AbstractBatcher> [preparing statement]
""<DEBUG> <2006-04-19 14:10:32,150> <id.SequenceGenerator> [Sequence identifier generated: 3]
""<DEBUG> <2006-04-19 14:10:32,150> <jdbc.AbstractBatcher> [about to close PreparedStatement (open PreparedStatements: 1, globally: 1)]
""<DEBUG> <2006-04-19 14:10:32,150> <jdbc.AbstractBatcher> [closing statement]
""<DEBUG> <2006-04-19 14:10:32,150> <def.AbstractSaveEventListener> [generated identifier: 3, using strategy: org.hibernate.id.SequenceGene
rator]
""<DEBUG> <2006-04-19 14:10:32,152> <def.AbstractSaveEventListener> [saving [com.verisign.webapps.services.common.Order#3]]
""<DEBUG> <2006-04-19 14:10:32,158> <engine.Cascade> [processing cascade ACTION_SAVE_UPDATE for: com.verisign.webapps.services.common.Order
]
""<DEBUG> <2006-04-19 14:10:32,158> <engine.Cascade> [done processing cascade ACTION_SAVE_UPDATE for: com.verisign.webapps.services.common.
Order]
""<DEBUG> <2006-04-19 14:10:32,178> <engine.Cascade> [processing cascade ACTION_SAVE_UPDATE for: com.verisign.webapps.services.common.Order
]
""<DEBUG> <2006-04-19 14:10:32,178> <engine.Cascade> [done processing cascade ACTION_SAVE_UPDATE for: com.verisign.webapps.services.common.
Order]
""<DEBUG> <2006-04-19 14:10:32,222> <transaction.JDBCTransaction> [rollback]
""<DEBUG> <2006-04-19 14:10:32,222> <transaction.JDBCTransaction> [re-enabling autocommit]
""<DEBUG> <2006-04-19 14:10:32,222> <transaction.JDBCTransaction> [rolled back JDBC Connection]
""<DEBUG> <2006-04-19 14:10:32,222> <jdbc.JDBCContext> [after transaction completion]
""<DEBUG> <2006-04-19 14:10:32,222> <jdbc.ConnectionManager> [aggressively releasing JDBC connection]
""<DEBUG> <2006-04-19 14:10:32,223> <jdbc.ConnectionManager> [releasing JDBC connection [ (open PreparedStatements: 0, globally: 0) (open R
esultSets: 0, globally: 0)]]
""<DEBUG> <2006-04-19 14:10:32,225> <impl.SessionImpl> [after transaction completion]
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lmiranda
 Post subject:
PostPosted: Wed Apr 19, 2006 6:49 pm 
Beginner
Beginner

Joined: Mon Nov 29, 2004 2:26 pm
Posts: 28
You didn't post a FULL stack trace. Try using a Long instead of the primitive long.
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Rick Alsopp
 Post subject: Getting ClassCastException on id for session.save
PostPosted: Fri Apr 21, 2006 6:50 am 
Newbie

Joined: Fri Apr 21, 2006 5:44 am
Posts: 3
Location: UK
I had a similar problem when my id field was using an int. Got round this one by writing a method convertToInteger() as Hibernate needs the identifier field to be serializable. Objects are but primitives aren't. Maybe try creating a util method something like:
Code:
   public static Long convertToLong(final long fieldValue) {
       Long returnValue =  new Long(fieldValue);
       return returnValue;
   }

Then you could use it in your DAO something like:
Code:
...

    transaction = session.beginTransaction();
    session.save(UtilClass.convertToLong(orderId));
    transaction.commit();

...

Hope this helps
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