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Re: [corona-dev] content-format belongs on resource not on repository-descriptor

I think I missundestood you when responding previously.

Is your suggestion that we only define content-type (eg. team member repository) and access-type (eg. Jackrabbit repository)? Then you fetch the resource, and ask what is its format?

If yes, I think it won't work. While it may work for Jackrabbit, where you can put any meta-data in it, how would you do it with file accessible through HTTP or even laying at disk?

Marcin

Everitt, Glenn napisał(a):

[Marcin}

Yes then we would have it much simplified. The repository adapters are

simply for "access-type". Viewers would be in general for

"content-format". The "content-type" would then be for finding

repositories with some higher level content.

[Glenn]

As I mentioned in my earlier post I cheated and used the repository name

to specify the higher level content. I don’t think this approach will

work in general. The problem is since the name is for a repository you

can only specify one “higher level content” per repository. You can cheat

to get around this by specifying more than one repository-descriptor for

the “same” repository for maybe a database table with team members and

managers. You would have to create 2 repository-descriptors one for

“TeamMembers” and one for “Managers”. So, that is why we need

content-format to be on the specific resource

[Marcin]

But then we would need to have some kind of "content parsers". Use case

again with team repository. The XML file is kept in Jackrabbit. The

repository adapter returns content of the file. The overview page wants

to know how many team members there are. So we provide some "content

parser" (or reader) which returns all members in the team. It does it by

reading file from repository adapter, parses it and return user records.

But then I think the repository adapter should have a method like

getResouceStream(). Again the XML team member. It might be kept in:

file, WebDAV, JackRabbit, CVS or BLOB DB field. The input stream would

make it parsable no matter where would be stored. What would now return

the "fetchResource()" methods in repository adapter for all those

access-types?

[Glenn]

What you are proposing with the getResourceStream is very similar to what Jackrabbit JCR implements

on a Node Property. We could change IReposity fetchResource to return a ResourceObject instead of Object with methods

getResouceStream

getMetaData

getDataType

getResourceId

So how much work to change it?

Glenn

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