Is ForAll directive asynchronous

[Michel_Laplane]

In an OffLine Scenario I'm using this code when Starting the App

If( Connection.Connected,
ClearCollect( colVins,[@Vins]);
LoadData( colVins,"cacheVins", true );
ClearCollect( colLocalVins,[@Vins]);
LoadData(colLocalVins,"cacheLocalVins",true);
);
SaveData(colVins,"cacheVins");

I'm adding the new records in an editform with when OnSelect apply button is fired :

Collect(colLocalVins,{Nom:Nom.Text,Domaine:Domaine.Text,Image:Image2.Image});
SaveData(colLocalVins,"cacheLocalVins");
Navigate(BrowseScreen1)

Refreshing with a refresh button in the BrowseScreen  after adding a new record :

If( Connection.Connected,
    ForAll(colLocalVins,Patch([@Vins],Defaults([@Vins]) ,{Nom:ThisRecord.Nom,Domaine:ThisRecord.Domaine,Image:ThisRecord.Image})));
// Clean the local content
Clear(colLocalVins);
SaveData(colLocalVins, "cacheLocalVins" );
// Refresh the list of vins
Refresh([@Vins]);
ClearCollect(colVins,[@Vins]);
SaveData(colVins,"cacheVins" );

All is working well when I add a record in PowerApp Studio on my desktop but when using the App on my mobile,

After adding a record (that contain an image), if I refresh, the record are duplicated.

I suspect that the execution after the ForAll continue even if the records have not yet been patched.

Any suggestion for helping me.

Regards.

[Pstork1]

Its not really synchronous or asynchronous, because its not a Loop like you are envisioning it.  ForAll() applies the formula specified to all the records identified.  It acts like its asynchronous because it apples the formula independent of the outcome of the other records.  But its not a Loop.  Each record finishes in its own time, independent of all the rest.

[Michel_Laplane]

Thanks for your reply but I suspect that it takes a long time to update the records from the collection colLocalVins and that the Clear(colLocalVins) is fired before the end of the update.

So it could corrupt the Patch process.

Am I right?

[Pstork1 · Accepted solution]

No matter how long it takes to do all the updates, the Clear won't run until the If statement finishes, which should include all the ForAll updates.  My point was that none of the individual updates will affect any of the other updates.  But overall it should finish before the next command runs if its not inside a Concurrent() statement.

[Michel_Laplane]

@Pstork1 Humm, newby mistake in OnStart explain the problem.

If( Connection.Connected,
ClearCollect( colVins,[@Vins]);
LoadData( colVins,"cacheVins", true );
// ClearCollect( colLocalVins,[@Vins]);
LoadData(colLocalVins,"cacheLocalVins",true);
);
SaveData(colVins,"cacheVins");

The localCollection was filled with the original data.

Thanks for your help

[SanilMaru]

I have one scenario where I have to insert 10 records in sequence to SharePoint list from collection. I found that while using ForAll and Patch records are getting inserted but not in sequential order. Is there any way to perform the Bulk insert operation sequentially?

I have noticed this happening recently. Earlier it used to insert the records sequentially