How to get only updated features through iOS sdk

[KamalMittal]

Hi,

I have generated geodatabase on device for offline use. Now I want to get only those features which are last edited/modified or newly added instead of whole features data and update geodatabse(which will contain old + new feature data) on device when user press refresh button. Right now I am using Arcgis runtime iOS sdk v100.0

How I will achieve that thing?

Thanks,

Kamal

[SuganyaBaskaran1]

You'll have to loop through the tables in your geodatabase and use updatedFeaturesWithCompletion: method available on AGSGeodatabaseFeatureTable class. Alternatively, you can also just get the number of updates using updatedFeaturesCountWithCompletion: method. 

Suganya

[KamalMittal]

Thanks Suganaya.

Actually I want to fetch only updated features or specific features data from arcgis online layer url not from the locally geodatabase.

Thanks,

Kamal

[SuganyaBaskaran1]

Do you mean when you do a sync? If that's the case, by default sync operation is performed for only the changes. 

[KamalMittal]

Yes I am asking about sync operation. So one thing I want to confirm is that when I call  feature service again then it will return only updated feature data or whole feature data?

Thanks,

Kamal

[KamalMittal]

Any Update on this?

[MichaelDavis3]

At least in my experience the default behavior when syncing is to send and receive only the diff information.  You shouldn't be getting back the entire dataset.