> "Why don't you use Jackrabbit via DavEx or RMI?" Good question. I was looking for a REST interface to Jackrabbit. I don't like RMI. I don't like it a lot. IMHO Remote Procedure Calls come into the category of a Very Bad Idea (TM), but that discussion has been done to death. I'm not actually familiar with DavEx. If there is a simpler REST Interface than slide that would be very interesting. One of the things that attracted me to Sling was the presentation http://www.slideshare.net/lars3loff/the-zero-bullshit-architecture. I found that I shared a lot of prejudices with the author, and shared prejudices are what makes the world go round. As I understand it Day were the main contributor to Sling, and the Sling architecture is what he was describing.
> "I'm not sure what you meant by "a mixture of structured and > unstructureddata". By a "mixture of structured and unstructured data", I mean that some data will have schemas and some won't. I also am quite likely to change the schema across time. As I have been involved in a large number of database migration problems: all of which were painful, I hope to avoid all those problems. It looks to me that Jackrabbit will deal with many of these issues. > "Have you looked at other databases such as CouchDB or MongoDB?" I haven't looked at CouchDb/MongoDb, although I have worked with Neo4J and Cassandra which have some similar properties. I really like Cassandra, and keep trying to make the project I am writing use it, but the amount of work I would have to do is quite high. > "I don't think Sling is a remote repository." You might be right. I have come to it thinking its mainly a Restful front end to Jackrabbit, but it is quite a lot more than that. The features of Jackrabbit I like are 1: WebDAV interface...There are loads of tools available for troubleshooting and exploring 2: The versioning Although I came to Sling for the Restful interface, there are a few of features that Sling adds to Jackrabbit that I like: 1: It looks as though Sling would deal with the schema changing across time issue: The support for multiple renderers, and for those renderers to be quite sophisticated looks as though I can ask for resource.oldVersion0, resource.oldVersion1 or resource.json, and have the correct values presented to me. 2: I hope to be able to use the Sling rendering to reduce the chatter between client and server If there is a more suited Restful interface to Jackrabbit I would be very interested. On Fri, Jul 8, 2011 at 1:51 PM, sam lee <skyn...@gmail.com> wrote: > > Why don't you use Jackrabbit via DavEx or RMI? > http://wiki.apache.org/jackrabbit/RemoteAccess > > I don't think Sling is a remote repository. > > I'm not sure what you meant by "a mixture of structured and unstructured > data". > Have you looked at other databases such as CouchDB or MongoDB? > > > > On Fri, Jul 8, 2011 at 8:05 AM, Phil Rice > <phil.rice.erud...@googlemail.com>wrote: > > > @Sam Lee > > "Why do you want to access through Java" My client is going to be an > > Eclipse > > Plugin. In practice I will probably use Scala or Clojure, but I didn't want > > to pollute my pitiful request for help with language issues. I think Sling > > looks like an excellent remote repository for a mixture of structured and > > unstructured data. > > > > @Julian > > I take your point. I think all I really needed was the hello world program > > to post data in, and get data out. One of the things I really like about > > Sling (although I haven't got it working yet) is that I can effectively ask > > for an object graph with one query. > > > > Example: I am making a project data repository. My data structure holds > > data > > such as "software projects", "releases", "classes", "methods". Some > > "fields" > > are mandatory, but many will be freeform. The relationship between these > > entities is complex. As an example the method setXXX may exist across > > multiple versions, but perhaps change what it does, so displaying comments > > and documentation about that method requires business knowledge. As I > > understand it, in a single query about a method, I can return data about > > the > > method, but I can walk the repository tree (I don't have the sling language > > yet...give me time) and return data about the method, the class that holds > > it, the releases that the class is in, and the project that the holds the > > data about the class. > > > > Your checklist looks like a training plan. My first plan was to make a plug > > in that was very chatty: I make a query for each entity, perhaps 20 queries > > for a screen full of data. This would allow me to gain experience with > > sling, eclipse plugins etc, and give me something "shiny" to discuss with > > potential users. Once I have that working, I will be doing a lot more work > > to reduce it to (hopefull) one request, at which point I will be using a > > lot > > more of the sling tools > > > > @Bertrand > > Thanks for the slingbucks example, I'll start with that and if I get stuck > > move onto CRX. > > > > @All > > Once again thank you for the assistance > > > > > > On Fri, Jul 8, 2011 at 12:41 PM, Bertrand Delacretaz < > > bdelacre...@apache.org > > > wrote: > > > > > On Fri, Jul 8, 2011 at 1:31 PM, Julian Sedding <jsedd...@gmail.com> > > wrote: > > > > ...Typically when working with Sling you don't access it via HTTP a > > lot. > > > > Rather you work "within" Sling. I.e. you write scripts that run within > > > > an authenticated request (which typically originates from a browser). > > > > I believe that getting "inside" Sling can be a little tricky at the > > > > beginning and that's where CRX with its tooling can certainly help.... > > > > > > Though our samples, like the Slingbucks one, [1] will show you how to > > > combine java and scripting code to create applications with Sling. > > > > > > -Bertrand > > > > > > [1] http://svn.apache.org/repos/asf/sling/trunk/samples/slingbucks > > > > >
