Re: ERSync?
Re: ERSync?
- Subject: Re: ERSync?
- From: Dan Beatty <email@hidden>
- Date: Mon, 21 Nov 2011 11:22:52 -0800
- Thread-topic: ERSync?
Title: Re: ERSync?
Greetings Dave,
Exactly. In the case of a Core Data document based app, that is where I was scratching my head. Then it hit me. There would need to be an intermediate Shoe-Box app. It would actually provide the ERSync connection and a sublcass of NSAtomicStore. The document based app is a self contained Core-Data database. I suspect we could have a special naming convention in this case. Say have the name of the application and the location of the Core-Data database (its document) marshaled into the name of the client app. In other words, the document is the client app.
Of course the name of the application could also become the apiKey, in that special case. In any case, this something worth thinking about. I will probably have some fun tonight working on the Shoe-Box app that provides the ERSync connectivity. Hopefully, I continue to make some progress.
Thank you,
Daniel Beatty
Computer Scientist, Detonation Sciences Branch
Code 474300D
1 Administration Circle M/S 1109
China Lake, CA 93555
email@hidden
(LandLine) (760)939-7097
(iPhone) (806)438-6620
P.S. I would also like to add the notion of a Domain Relational Calculus (DRC) style query to ERSync (WO side). The idea is that the DRC queries would also be associated with the device/app principle. Thus if a database is larger WO side than the capacity of an iPhone for example, the authorizer would check the queries to help govern the amount fed to the iPhone ensure that we do not overwhelm it.
On 11/21/11 9:18 AM, "David Aspinall" <email@hidden> wrote:
Hi Daniel,
I think depending on your shoe box this could work. Let me rephrase where I see this going.
Option 1: if your shoebox document is a custom binary store, XML document or anything of that nature, then this will NOT work. Sync'ing something like that is really hard. You might find success using a modified 'rsync' protocol, but even then there are going to be risks. Oh another good example of this would be git, svn or cvs. They only really work well with simple text documents, therare not that I know of that will merge (for example) a word document. They basically treat them as large binary blobs.
Option 2: Each shoebox is a self contained core data database. This could work. The idea behind ERSync was to leverage the change notification system to create very small delta packages between the EOF legacy and the mobile core data system.
Hope that helps,
David
On 2011-11-20, at 9:49 PM, Daniel Beatty wrote:
Greetings Amy, Dave, Chuck, anyone,
Does any one have any idea if ERSync could be expanded to handle synchronization to include document based applications? The shoe-box applications seems to be the current model for both the iOS and Mac. I was struck by a sort of revelation this weekend to construct a kind of shoe-box ERSync Cocoa app with scriptable capabilities that supplies subclass of NSAtomicStore. The premise is that the shoe-box app would serve kind of the same function as the ERSync framework does in the WO app except for the Cocoa app. The NSAtomicStore subclass would enable the user to call up the document (or shoe-box app) via their own app. The ERSync Cocoa shoe-box app would give the user a sort of user level admin capability over all ERSync enabled apps on their Mac (kind of a D2W for the shoe-box).
The gotcha came when I considered the possibility of a document-based app using the NSAtomicStore subclass. Any ideas? I will try at first under the presumption that document-based apps don't exists. I am not sure how long that fairy will stay away for, I forgot to give him Guinness.
V/R,
Dan Beatty, ABD
Ph.D. Student
Texas Tech University
email@hidden <mailto:email@hidden>
http://web.me.com/danielbeatty/My_Home_Page/Welcome.html
<http://web.me.com/danielbeatty/My_Home_Page/Welcome.html> (806)438-6620
On Jul 24, 2011, at 12:35 PM, Amy Worrall wrote:
Great, thanks. I'll check it out.
Amy
On Sun, Jul 24, 2011 at 8:05 PM, Pascal Robert <email@hidden> wrote:
Le 2011-07-24 à 12:02, Amy Worrall a écrit :
Hi all!
Could anyone point me to where I can find ERSync? I've heard about it
(i.e. that it's good for writing backends for iPhone apps), but I
don't know anything more about it than that.
https://github.com/davidAtGVC/RemoteSync/tree/master/WebObjects/ERSync
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David Aspinall
Senior IT Consultant
Global Village Consulting Inc.
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