topic Re: NodeRef and Association in Alfresco Archive

NodeRef and Association

ojio_bis — Fri, 11 Dec 2009 10:52:47 GMT

Hi, Can anyone help me understand the nodereference datatype ? I am getting confused between Noderef and assocations.Is there any usecases where I should go for noderef ?May be this a noob question, but I am new to cms world Thanks,Ojio

Re: NodeRef and Association

ojio_bis — Thu, 17 Dec 2009 17:41:26 GMT

Ok let me try to ask a question with a use case.

Suppose we have a article and author node. Article "has-a" relationship with author.
I can model this as a peer association with source as article and author as node.

If I see this effectively this is a NodeReference (foreign key).
Is it possible to have a article property with a node reference type rather than an association ???.

Thanks
Ojio

Re: NodeRef and Association

mrogers — Thu, 17 Dec 2009 20:26:47 GMT

A node ref is a primary key for a node.

An association is a link between two nodes. The association has a name and a type and contains two node refs, one for the parent and one for the child. In addition an association can be primary or secondary. A node has one Primary association and will cascade delete the child on deletion of the parent. Secondary associations are aggregations and are many to many.

In your case the relationship between the article and the author is probably some sort of secondary association.

Re: NodeRef and Association

ojio_bis — Fri, 18 Dec 2009 03:25:30 GMT

Thanks a lot mrogers for clarifying this.