Inverses - possible new feature for comment

Discussions about design and architecture principles, including native JADE systems and JADE interoperating with other technologies
ConvertFromOldNGs
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Re: Inverses - possible new feature for comment

Postby ConvertFromOldNGs » Fri Aug 07, 2009 11:17 am

by Dean Cooper >> Wed, 22 Dec 1999 0:52:06 GMT
Dean - are you saying that the exception shouldn't have fired? - 'cos it did!

No, the exception should have fired.

Dean.

ConvertFromOldNGs
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Re: Inverses - possible new feature for comment

Postby ConvertFromOldNGs » Fri Aug 07, 2009 11:17 am

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ConvertFromOldNGs
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Re: Inverses - possible new feature for comment

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ConvertFromOldNGs
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Re: Inverses - possible new feature for comment

Postby ConvertFromOldNGs » Fri Aug 07, 2009 11:18 am

by Dean Cooper >> Mon, 29 May 2000 7:20:49 GMT

In Jade 5.1, the kernel gives you the ability to reference a persistent from a transient via a reference with inverse(s), without having the inverse(s) on the persistent maintained (thus avoiding 1215 exceptions).

The relationship dialog in 5.1 allows you to specify which end(s) of a relationship may reference a persistent from a transient. This allows you to control the references for which you want this behaviour. Attempting to reference a persistent from a transient via a reference (with inverses) without this option set will still raise a 1215 (ie: allowing inverse references only between objects of the same lifetime, as it does today).

Persistents still are not permitted to reference transients. We do not intend to allow this.

Dean.


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