[hibernate-issues] [Hibernate-JIRA] Commented: (ANN-354) @javax.persistence.SequenceGenerator defaults to 'seqhilo' strategy.

[Emmanuel Bernard (JIRA)]

    [ http://opensource.atlassian.com/projects/hibernate/browse/ANN-354?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_28421 ] 

Emmanuel Bernard commented on ANN-354:
--------------------------------------

I already commented on it, use allocationSize=1 and no this is not a bug

> @javax.persistence.SequenceGenerator defaults to 'seqhilo' strategy.
> --------------------------------------------------------------------
>
>                 Key: ANN-354
>                 URL: http://opensource.atlassian.com/projects/hibernate/browse/ANN-354
>             Project: Hibernate Annotations
>          Issue Type: Improvement
>    Affects Versions: 3.2.0.cr1
>            Reporter: Andrey Petrov
>
> When using an oracle-style sequence to auto generate primary key values like this:
>     @Id
>     @GeneratedValue(strategy=GenerationType.SEQUENCE, generator="MySeq")
>     @SequenceGenerator(name="MySeq", sequenceName="ORACLE_SEQ")
>     public long getId() {
>         return id;
>     }
> then a org.hibernate.id.SequenceHiLoGenerator is always used. 
> There should be a way to configure a different generator!
> Since the hilo generator is not suitable for my application I have to use this instead:
>     @Id
>     @GeneratedValue(generator="MySeq")
>     @GenericGenerator(
>         //this is a hibernate-specific hack to force the use of a regular sequence generator
>         //otherwise a sequencehilo generator is used by default :-(((
>         name = "MySeq", strategy = "sequence", parameters = {
>             @Parameter(name = "sequence", value = "ORACLE_SEQ")
>         }
>     )
>     public long getId() {
>         return id;
>     }
> Now this works fine and while this solution can be tolerated for my app I really wish there was another way to control the default generator strategy (sequencehilo or plain sequence) without resorting to hibernate-specific org.hibernate.annotations.GenericGenerator annotations.
> Do you think a mechanism for configuring that can be added to a future hibernate annotations version?
> p.s.
> as long as i can see the seqhilo generation strategy is hardcoded in:
> org.hibernate.cfg.AnnotationBinder.java:1925:			case SEQUENCE:
> org.hibernate.cfg.AnnotationBinder.java:1926:				return "seqhilo";
> (in hibernate annotations version 3.2.0.cr1)

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