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This is mainly a note to self because I screw up every time I need to write something like that, so here’s an example for myself in the future.

@Entity
@Table( name = "master" )
public class Master {
	@Id
	@GeneratedValue( generator = DBConstants.MASTER_SEQ )
	@SequenceGenerator( name = DBConstants.MASTER_SEQ, sequenceName = DBConstants.MASTER_SEQ )
	private long id;

	@OneToOne( fetch = FetchType.LAZY, optional = false, targetEntity = Detail.class, cascade = CascadeType.ALL )
	@PrimaryKeyJoinColumn
	private Detail detail;

	// ...
}

@Entity
@Table( name = "master_detail" )
public class Detail {
	@Id
	@GeneratedValue( generator = DBConstants.DETAIL_SEQ )
	@SequenceGenerator( name = DBConstants.DETAIL_SEQ, sequenceName = DBConstants.DETAIL_SEQ )
	private long id;

	// ...
}

Reference: java.sun.com, Tadtech

Last year’s success story continues. If you consider to do GWT 1.7.x development on a 10.5.8 Leopard, you better spare the 4.0.5 update too and stick to Safari 4.0.3; it keeps crashing even though the bug was reported to be fixed in 4.0.5.

I am displeased.

I installed the Safari 4.0.4 update yesterday on my OS X 10.5.8 (Leopard) and got GWT 1.7.x crashes ever since then. That’s a pitty since I’m involved in a larger GWT project (featuring GWT Canvas). There’s already a ticket and a simple workaround available but that’s no choice for production environments. So if you have a Google account, please vote for it so it gets resolved soon. Apparently it’s a Webkit bug which will be fixed in Safari 4.0.5.

Update: I could downgrade back to Safari 4.0.3 using Pacifist and the Safari 4.0.3 installation package. I opened the package with Pacifist and chose “Replace” as the option for all files. Trying to apply the package alone won’t help because it detects that a later version was installed, even if you try to remove Safari competely using AppZapper.

Safari’s “About” screen shows version 4.0.3 again, OS X asks me to update to 4.0.4 again and my GWT application is back running. Not sure whether there are any other side effects, though, so handle with care.

Another update: Someone wasn’t as lucky as me and screwed his system with that approach. Better follow this instruction.