Constraints on Nodes

[ge...@bt.com]

Hi

I don't see anything available in jackrabbit that enables me to impose
constraints on Nodes (e.g. ensure only one node of specific type is
created).

Can someone confirm that this feature is definitely NOT available, and
if not whether there is a planned feature to provide it in the future.

Many thanks

Regards


George Sibley

RE: Constraints on Nodes

[ge...@bt.com]

Many thanks for the speedy update Stefan. 

-----Original Message-----
From: Stefan Guggisberg [mailto:stefan.guggisberg@gmail.com] 
Sent: 27 November 2009 09:18
To: dev@jackrabbit.apache.org
Subject: Re: Constraints on Nodes

hi george

On Fri, Nov 27, 2009 at 10:00 AM,  <ge...@bt.com> wrote:
>
> Hi
>
> I don't see anything available in jackrabbit that enables me to impose

> constraints on Nodes (e.g. ensure only one node of specific type is 
> created).

you can define costraints on the types of child nodes and on the values
of properties.

but there's no easy way of implementing something like a 'singleton
node'
(i.e. only one node instance of a particulal type per
workspace/repository).

cheers
stefan

>
> Can someone confirm that this feature is definitely NOT available, and

> if not whether there is a planned feature to provide it in the future.
>
> Many thanks
>
> Regards
>
> George Sibley

Re: Constraints on Nodes

[Stefan Guggisberg <st...@gmail.com>]

hi george

On Fri, Nov 27, 2009 at 10:00 AM,  <ge...@bt.com> wrote:
>
> Hi
>
> I don't see anything available in jackrabbit that enables me to impose
> constraints on Nodes (e.g. ensure only one node of specific type is
> created).

you can define costraints on the types of child nodes and on the values
of properties.

but there's no easy way of implementing something like a 'singleton node'
(i.e. only one node instance of a particulal type per workspace/repository).

cheers
stefan

>
> Can someone confirm that this feature is definitely NOT available, and if
> not whether there is a planned feature to provide it in the future.
>
> Many thanks
>
> Regards
>
> George Sibley