cnd and multiple

[David Buchmann <da...@liip.ch>]

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hi,

while writing the cnd parser for phpcr, i stumbled over a strange
problem. after it seemed to work, i tried to parse the jackrabbit
builtin_nodetypes.cnd [1] because it is big so i hoped to find bugs. i
found some and fixed them, but now i am stuck.

there is this definition for rep:Group that has a "multiple"
declaration for a rep:members child node. and the same issue on
rep:Members.
from the cnd documentation and also reading the jackrabbit reader [2]
i don't see how this can be valid. is this a bug? is this file never
parsed by jackrabbit? or do you use a different parser that adds this
behaviour?

the nodes look like this:

[rep:Group] > rep:Authorizable
  + rep:members (rep:Members) = rep:Members multiple protected VERSION
  - rep:members (WEAKREFERENCE) protected multiple < 'rep:Authorizable'

(this is also an example of having a child node and a property with
the same name, btw.)

[rep:Members]
  orderable
  + * (rep:Members) = rep:Members protected multiple
  - * (WEAKREFERENCE) protected < 'rep:Authorizable'


would be glad for any input what this means.

thanks,
david

[1]
http://svn.apache.org/viewvc/jackrabbit/branches/2.6/jackrabbit-core/src/main/resources/org/apache/jackrabbit/core/nodetype/builtin_nodetypes.cnd?revision=1437333&view=co

[2]
http://svn.apache.org/repos/asf/jackrabbit/trunk/jackrabbit-jcr-commons/src/main/java/org/apache/jackrabbit/commons/cnd/CompactNodeTypeDefReader.java
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Liip AG // Agile Web Development // T +41 26 422 25 11
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Re: cnd and multiple

[David Buchmann <da...@liip.ch>]

ah, ok then i understand.

thanks for the clarification. the php cnd parser is all ready :-)

cheers,david

Am 27.03.2013 05:40, schrieb Jukka Zitting:
> Hi,
> 
> On Wed, Mar 27, 2013 at 3:42 AM, David Buchmann <da...@liip.ch> wrote:
>> i don't see how this can be valid. is this a bug? is this file never
>> parsed by jackrabbit? or do you use a different parser that adds this
>> behaviour?
> 
> The trick here is that the parser allows "multiple" to be used as a
> synonym of "sns" in child node definitions, see [1]. It's a
> Jackrabbit-specific convention that dates back to before the CND
> format was included (and cleaned up) in the JCR spec.
> 
> [1] https://github.com/apache/jackrabbit/blob/trunk/jackrabbit-jcr-commons/src/main/java/org/apache/jackrabbit/commons/cnd/Lexer.java#L54
> [2] http://jackrabbit.apache.org/node-type-notation.html
> 
> BR,
> 
> Jukka Zitting
> 

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Liip AG // Agile Web Development // T +41 26 422 25 11
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Re: cnd and multiple

[Jukka Zitting <ju...@gmail.com>]

Hi,

On Wed, Mar 27, 2013 at 3:42 AM, David Buchmann <da...@liip.ch> wrote:
> i don't see how this can be valid. is this a bug? is this file never
> parsed by jackrabbit? or do you use a different parser that adds this
> behaviour?

The trick here is that the parser allows "multiple" to be used as a
synonym of "sns" in child node definitions, see [1]. It's a
Jackrabbit-specific convention that dates back to before the CND
format was included (and cleaned up) in the JCR spec.

[1] https://github.com/apache/jackrabbit/blob/trunk/jackrabbit-jcr-commons/src/main/java/org/apache/jackrabbit/commons/cnd/Lexer.java#L54
[2] http://jackrabbit.apache.org/node-type-notation.html

BR,

Jukka Zitting