[rules-dev] Package based import/export in Guvnor

[Jervis Liu]

Michael Neale wrote:
> well for category things - it could be that if a category doesn't 
> exist in the target "space" then it is created, if not, it is used. 
> There are other things though, which are interlinked - but the same 
> issue you bring up applies (which is why this wasn't done a while back). 
>
> So a simple JCR partial export won't really do - needs to be a bit 
> more programmatic than that. 
>
> The question is - in the target space - do we want to create the 
> missing things, or remove the links from them as part of the export 
> etc... 
>
> So if RuleA depends on categoryX and categoryY, but only categoryX 
> (same name) exists in the target place, then do we create categoryY 
> there, or strip it? 
>
Things are a little bit more complex than this.  The category (and other 
things like status etc) attribute  is not a plain text value, its a 
reference type, essentially its a UUID point to the category nodes. This 
UUID value is always invalid in another repository.


> On Fri, Aug 6, 2010 at 4:44 PM, Jervis Liu <jliu at redhat.com 
> <mailto:jliu at redhat.com>> wrote:
>
>     Hi,
>
>     I am currently evaluating a Guvnor feature request which is to
>     implement
>     package based import/export. The idea is to use this feature to move a
>     rule package from the DEV repo to QA to Stage to the Prod repo. For
>     details please check https://jira.jboss.org/browse/GUVNOR-311. My
>     initial investigation shows that it is not possible to do a single
>     package import/export technically. A single package in Guvnor
>     repository
>     is never a self-contained unit. For example, every asset under the
>     package has a mandatory attribute which is a reference link to
>     category
>     information. In short, package can not be exported/imported as long as
>     it contains references to entities outside package.
>
>     There are two things I would like to ask for your opinions.
>     Firstly, can
>     you think of any way to implement this import/export feature?
>     Personally
>     I dont see how this can be done. This is similar to relational
>     database,
>     generally it is impossible to export and import data from/to a single
>     non-isolated table in database. Or sometimes it is possible but with
>     extensive care normally involved in manual work to deal with dirty
>     data.
>     In our case, one example of dirty data is category, but what can we do
>     with category information, we discard package information when we do
>     package export?
>
>     Secondly, if such feature can not be implemented, can we figure out a
>     different way to help users to better manage the life cycle in Guvnor?
>     The current version of Guvnor is not very strong on this part yet. If
>     you are a Guvnor user or you have experience of using similar
>     products,
>     how did you manage and how do you want to manage the lifecycle of
>     assets
>     in your repository?
>
>
>     Thanks,
>
>     Jervis
>
>
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>
> -- 
> Michael D Neale
> home: www.michaelneale.net <http://www.michaelneale.net>
> blog: michaelneale.blogspot.com <http://michaelneale.blogspot.com>
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