Need to understand cascade="create"

meagle · **Joined:** Tue Aug 26, 2003 12:31 pm **Posts:** 14

Hibernate version: 3.0 RC1

Name and version of the database you are using: DB2 8.2

I am getting an error when I try to map a collection like this and initialize Hibernate:

Code:

<bag
   name="orderLineItems"
   table="TestOrderLineItem"
   lazy="true"
   inverse="true"
   cascade="create,merge,save-update"
   order-by="description,lineItemPrice"
>

     <key
        column="Order_ID"
     />

     <one-to-many
        class="com.meagle.bo.OrderLineItem"
     />
</bag>

Here is the error message:

org.hibernate.MappingException: Unsupported cascade style: create
at org.hibernate.engine.Cascades.getCascadeStyle(Cascades.java:961)
at org.hibernate.mapping.Property.getCascadeStyle(Property.java:92)
at org.hibernate.tuple.PropertyFactory.buildStandardProperty(PropertyFactory.java:115)
at org.hibernate.tuple.EntityMetamodel.<init>(EntityMetamodel.java:145)
at org.hibernate.persister.entity.BasicEntityPersister.<init>(BasicEntityPersister.java:398)
at org.hibernate.persister.entity.SingleTableEntityPersister.<init>(SingleTableEntityPersister.java:104)
at org.hibernate.persister.PersisterFactory.createClassPersister(PersisterFactory.java:55)
at org.hibernate.impl.SessionFactoryImpl.<init>(SessionFactoryImpl.java:199)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1043)
at org.springframework.orm.hibernate3.LocalSessionFactoryBean.newSessionFactory(LocalSessionFactoryBean.java:568)
at org.springframework.orm.hibernate3.LocalSessionFactoryBean.afterPropertiesSet(LocalSessionFactoryBean.java:503)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1073)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:343)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:260)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:221)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:145)

The documentation states this:

Quote:

"Otherwise, you might not need cascade at all. But if you think that you will often be working with the parent
and children together in the same transaction, and you want to save yourself some typing, consider using
cascade="create,merge,save-update"."

Here is what I see inside org.hibernate.engine.Cascades:

Code:

   private static final Map STYLES = new HashMap();
   static {
      STYLES.put("all", STYLE_ALL);
      STYLES.put("all-delete-orphan", STYLE_ALL_DELETE_ORPHAN);
      STYLES.put("save-update", STYLE_SAVE_UPDATE);
      STYLES.put("persist", STYLE_PERSIST);
      STYLES.put("merge", STYLE_MERGE);
      STYLES.put("lock", STYLE_LOCK);
      STYLES.put("refresh", STYLE_REFRESH);
      STYLES.put("replicate", STYLE_REPLICATE);
      STYLES.put("evict", STYLE_EVICT);
      STYLES.put("delete", STYLE_DELETE);
      STYLES.put("delete-orphan", STYLE_DELETE_ORPHAN);
      STYLES.put("none", STYLE_NONE);
   }

Should we use persist instead of create? Is the doco just wrong?

Regards,

Mark

anthony · **Posted:** Wed Mar 23, 2005 12:49 pm

change "create" to "persist"

meagle · **Joined:** Tue Aug 26, 2003 12:31 pm **Posts:** 14

Thanks for the clarification. Request: Please update doco. :) Also, will the annotation change to CascadeType.Persist or will that stay the same (CascadeType.Create) and have the same meaning?

Regards,

Mark

anthony · **Posted:** Wed Mar 23, 2005 2:56 pm

the doco should be up-to-date, if not, please tell where it isn't.
Annotation will follow changes.

And yes "create" and "persist" are the same, just forget about "create" you won't see it anymore.

ddecavele · **Joined:** Wed May 05, 2004 1:00 pm **Posts:** 7

It's on page 44 of the reference doc for Hibernate 3.0.2. The first paragraph after the attributes explanation for many-to-one.

anthony · **Posted:** Fri May 06, 2005 10:52 am

submit documentation improvment on jira please

emmanuel · **Posted:** Mon May 09, 2005 5:26 am

I fixed them in CVS, let me know if I missed some.