Hi Stefan,

Thanks, it works that way.

Cosmin

----- Original Message ----
From: Stefan Guggisberg <[EMAIL PROTECTED]>
To: [email protected]
Sent: Thursday, November 16, 2006 10:46:23 AM
Subject: Re: Creating NodeType with dynamic, linked properties

hi cosmin

On 11/16/06, Cosmin Zamfir <[EMAIL PROTECTED]> wrote:
> Hello all,
>
> Suppose I want to create several NodeTypes, each of them containing  a 
> Property called "category" whose value is constrained to a List of values.
>
> The constraint  list  will  need to be expanded as more categories will be 
> added. This change should be reflected then in all NodeTypes which contain 
> the "category" property.
> Unfortunately, it seems that the PropertyDefinition is somehow static, 
> getValueConstraints() only allows to define one time the constraints. There 
> is no functionality to create a link to a dynamic Property, so that all 
> changes made in the Property will be reflected in all NodeTypes using this 
> Property.
>
> The only solution I see at the moment is to create a custom implementation, 
> outside the repository, to mimic the NodeType interface,
>  including inheritance. But doing so will create a lot of disadvantages; 
> including the fact that there will be no checks done by the repository itself 
> for compliance to the NodeType of new Nodes.
>
> Are you aware of any posibility to create such a functionality using the 
> repository?

you could e.g. create a node type myapp:Category that extends from
mix:referenceable. now for each category (e.g. book, dvd, etc) you can
create a node of type myapp:Category.

in your custom node types make your "category" property a REFERENCE
property and restrict it to myapp:Category.

you can add new categories (nodes of type myapp:Category) at any time.

cheers
stefan


>
> Thanks a lot,
> Cosmin
>
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