2:34 p.m.
Hi All,
I am trying out the AeroGear iOS lib, and trying to achieve client side data persistency
employing AeroGear as much as possible. Here are a few questions I have, and I would
appreciate any comments, suggestions and/or directions:
- So, starting from the basic question, how can I retrieve my data stores once user leaves
the app and comes back (or, can I do this at all)?
-Then, what is the difference between "MEMORY" type data store and
"PLIST" type one (especially considering my goal is data persistence)?
- Or alternatively, considering what AeroGear provides for now, what would be the best
approach to implement offline support for the client? (for now, what I know is the lib
does not provide DataSync. so data consistency is what I will take care of on my own.)
Thanks for your time to read (and to respond). Bests,
---
Yavuz Selim Yilmaz
SUNY at Buffalo
Computer Science and Engineering
PhD Candidate
4:03 p.m.
On Thu, Jun 6, 2013 at 9:34 PM, Yavuz Selim YILMAZ <yavuzsel(a)buffalo.edu>wrote:
there are callbacks for the lifecycle of the app
MEM -> run of the app;
PList -> property list => pers. storage on the file system (sandbox style)
store PList and use the "Reachability" class (Apple example OR
https://github.com/tonymillion/Reachability)
-M
--
Matthias Wessendorf
blog: http://matthiaswessendorf.wordpress.com/
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4:15 p.m.
thank you for your response Matthias. i want to clarify my first question more. so, i
created my data store like this when user launched the app.
// create the datamanager
AGDataManager* dm = [AGDataManager manager];
// add a new (default) store object:
id<AGStore> myStore = [dm store:^(id<AGStoreConfig> config) {
[config setName:@"tasks"];
[config setType:@"PLIST"];
}]
then user switched to some other app and my app eventually terminated. then user came back
to my app again. how do i retrieve the data store i created above? does this work (seems
like it won't, as i lost my data manager above):
// create the datamanager
AGDataManager* dm = [AGDataManager manager];
// add a new (default) store object:
id<AGStore> myStore = [dm storeWithName:@"tasks"]
---
Yavuz Selim Yilmaz
SUNY at Buffalo
Computer Science and Engineering
PhD Candidate
On Jun 6, 2013, at 5:03 PM, Matthias Wessendorf <matzew(a)apache.org> wrote:
1:41 a.m.
Yes,
here is an simple example:
https://gist.github.com/matzew/80ef7d756c15ca774907
Run a simple app like that in Xcode:
1) in "application:didFinishLaunchingWithOptions" we create the
(persistent) PList store
2) once the app becomes "active",the "didFinishLaunch" log statement
shows
an empty store (surprise :))
2a) Afterwards, we save some values into the store (note:
the entry requires @"id" as it's field...).
3) Now, on your phone, kill the iOS app (see [1] if not sure how to do that)
4) start the app, via Xcode, again - and see the "didFinishLaunch" log
statement now shows the values, we stored before on the "
applicationDidBecomeActive" delegate function.
Do you think we should be more clear on this in our docs ?
-Matthias
[1] http://www.imore.com/daily-tip-close-backgrounded-app-ios-5
On Thu, Jun 6, 2013 at 11:15 PM, Yavuz Selim YILMAZ <yavuzsel(a)buffalo.edu>wrote:
--
Matthias Wessendorf
blog: http://matthiaswessendorf.wordpress.com/
sessions: http://www.slideshare.net/mwessendorf
twitter: http://twitter.com/mwessendorf
1:42 a.m.
Hi Yavuz.
thanks for trying out our library!
The issue here is that you don't, when you reload the app, specify the type of the
store, you just give the name. The library doesn't remember names and types of stores.
For this to work you need o specify the type of store as in the case when you created.
That is:
// create the datamanager
AGDataManager* dm = [AGDataManager manager];
// initialise store
id<AGStore> myStore = [dm store:^(id<AGStoreConfig> config) {
[config setName:@"tasks"];
[config setType:@"PLIST"];
}]
Now, If the PLIST store with name 'tasks' exist on disk it will be initialised
with the values you have inserted prior to termination and you can access them as normal.
Thanks
Christos
On Jun 7, 2013, at 12:15 AM, Yavuz Selim YILMAZ <yavuzsel(a)buffalo.edu> wrote:
12:46 p.m.
Hi,
Thanks for the answers. I have another question if you don't mind. When I create the
myStore like in your examples, do I have any indication that the store is not empty (i.e.
it is loaded from already existing plist store)? I can readAll from the store and check
the count, but is there any better way to get it? (maybe a side question, is readAll
efficient in this case?)
I appreciate your help. Bests,
---
Yavuz Selim Yilmaz
SUNY at Buffalo
Computer Science and Engineering
PhD Candidate
On Jun 7, 2013, at 2:42 AM, Christos Vasilakis <cvasilak(a)gmail.com> wrote:
12:58 p.m.
Hi,
there is no "isEmpty" or so:
http://aerogear.org/docs/specs/aerogear-ios/Protocols/AGStore.html
However, that would be a good enhancement. Do you mind filing a JIRA
against the AGIOS component ?
Thanks!
Matthias
On Thu, Jun 13, 2013 at 7:46 PM, Yavuz Selim YILMAZ <yavuzsel(a)buffalo.edu>wrote:
--
Matthias Wessendorf
blog: http://matthiaswessendorf.wordpress.com/
sessions: http://www.slideshare.net/mwessendorf
twitter: http://twitter.com/mwessendorf
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