[hibernate-issues] [Hibernate-JIRA] Issue Comment Edited: (HHH-5529) Bulk delete on Entity with @ElementCollection ignores the @CollectionTable

[Pascal Thivent (JIRA)]

    [ http://opensource.atlassian.com/projects/hibernate/browse/HHH-5529?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=38271#action_38271 ] 

Pascal Thivent edited comment on HHH-5529 at 9/2/10 11:04 PM:
--------------------------------------------------------------

Well, the JPA 2.0 spec simply doesn't forbid this use case (a collection of items isn't a collection of entity), so support is implied and I just thought that qualifying the problem as a "Bug" was appropriate. Apologies for not using "New Feature".

      was (Author: pthivent):
    Well, the spec simply doesn't forbid this use case (a collection of items isn't a collection of entity) so I just thought that not supporting this use case could be qualified as a "Bug". Apologies for not using "New Feature".
  
> Bulk delete on Entity with @ElementCollection ignores the @CollectionTable
> --------------------------------------------------------------------------
>
>                 Key: HHH-5529
>                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-5529
>             Project: Hibernate Core
>          Issue Type: New Feature
>          Components: entity-manager
>    Affects Versions: 3.3.2, 3.5.5, 3.6.0.Beta4
>         Environment: Hibernate 3.5.x, all database, all platforms.
>            Reporter: Pascal Thivent
>         Attachments: HHH-XXX.tar.gz
>
>
> I have an entity with a collection of basic elements mapped with @ElementCollection:
> {code}
> @Entity
> public class Foo {
>     @Id @GeneratedValue
>     private Long id;
>     @ElementCollection
>     @Column(name = "bar_column")
>     @CollectionTable(name = "Bar")
>     private Set<String> bars = new HashSet<String>();
>     public Long getId() { return id; }
>     public void setId(Long id) { this.id = id; }
>     public Set<String> getBars() { return bars; }
>     public void setBars(Set<String> bars) { this.bars = bars; }
> }
> {code}
> A bulk delete on this entity fails due to constraint violation on the collection table (Hibernate ignores the collection table).
> I don't think that the following cascading restriction from the JPA 2.0 specification applies:
> {quote}
> h3. 4.10 Bulk Update and Delete Operations
> ...
> A delete operation only applies to entities of the specified class and its subclasses. It does not cascade to related entities.
> {quote}
> In other words, Hibernate should handle the collection table as we have no way to bulk delete the basic elements from the collection table.
> I have attached a test case allowing to reproduce the issue.

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