[jboss-jira] [JBoss JIRA] Commented: (EJBTHREE-960) CascadeType REMOVE in relationships doesn't appear to cascade anymore.

[Fritz Feuerbacher (JIRA)]

    [ http://jira.jboss.com/jira/browse/EJBTHREE-960?page=comments#action_12365923 ] 
            
Fritz Feuerbacher commented on EJBTHREE-960:
--------------------------------------------

After doing some investigating it looks like the CascadeType applies to the parent bean.  So, if you delete the parent, it will cascade down and delete all the relationships and remove the data from the relations table.  But, if you just modify the relationship in the parent bean, like remove and item from a onetomany list, and merge, it modifies the parents relationship, but it doesn't remove the data in the relationship table.  The client is responsible for deleting each bean that was removed from the parents relationship by calling delete on each object individually.

So, the Jboss 4.0.5 upgrade is correct.

> CascadeType REMOVE in relationships doesn't appear to cascade anymore.
> ----------------------------------------------------------------------
>
>                 Key: EJBTHREE-960
>                 URL: http://jira.jboss.com/jira/browse/EJBTHREE-960
>             Project: EJB 3.0
>          Issue Type: Bug
>         Environment: Windows XP, JBoss AS 4.0.5.GA
>            Reporter: Fritz Feuerbacher
>
> Since I upgraded from JBoss 4.0.4.GA to 4.0.5.GA I have encountered this problem.
> Whenever I have an entity bean that has a relation in it I get strange behavior that I didn't have in 4.0.4.GA.
> Examples:
> Say I have an entity bean with a relation in it like:
> @OneToMany (mappedBy="user",
>                             cascade={cascadeType.ALL}),
>                             fetch=fetchType.EAGER)
> public List<UserAndRole> getUserAndRoles()
> {
>   return userAndRoles;
> }
> This works fine, and will cascade in all instances except if I take an existing bean
> and set the list to an empty list like:
> userAndRoles = new ArrayList<UserAndRole>();
> and then call merge on the entity bean.  It appears to remove the relationship in the the bean, however, the old entries in the table are still there.  In JBoss 4.0.4.GA, doing this would also remove the entries in the UserAndRoles table that corresponded to the items that were in the original userAndRoles list.  Definately something has changed between the versions.  I just can't figure out what.

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