On Wed, Jun 27, 2012 at 11:20 AM, Jukka Zitting <[email protected]> wrote: > Hi, > > On Wed, Jun 27, 2012 at 10:25 AM, Angela Schreiber <[email protected]> wrote: >> i don't fully see the use case for such long living sessions. > > The rationale is the same as for the branch feature we added to the > MicroKernel. Instead of having to maintain a separate transient tree > abstraction on the client side (which might be troublesome given > potentially limited storage capacity),
are you saying that each Node.addNode would trigger a sever-roundtrip? i don't see how this could perform reasonably... cheers stefan > it's better to be able to send > uncommitted data to the server for storage in a temporary branch where > it can be accessed using the existing tree abstraction already > provided by Oak. > > Most notably the session feature allows us to use such a HTTP binding > to implement remoting of the Oak API without the need for client-side > storage space and associated extra code for managing it. > >> IMO also importing big trees and batch read/writing should be covered >> by a single request. > > That quickly leads to increasingly complex server side features like > filtering or conditional saves. > > For example, think of a client like the Sling engine that first > resolves a path potentially with custom mappings, then follows a > complex set of resource type references, and finally renders a > representation of the resolved content based on the resource type > definitions that were found. Ideally (for consistency and better > caching support) it should be possible to perform the entire operation > based on a stable snapshot of the repository, but there's no way that > all the information required by such a process could be included in > the response of a single Oak HTTP request. > > Exposing the branch feature as proposed avoids the need for complex > server-side request processing logic and makes it easier to implement > many client-side features that would otherwise have to use local > storage or temporary content subtrees visible to other repository > clients. > > BR, > > Jukka Zitting
