Concurrency Exception when using pack v6.0.0 in Nuget #77
Description
Ef Core shows the AutoHistory require to have 'rowId' not follow the updated entity's Id, but the 'last_insert_rowid()', what does it mean?
info: Microsoft.EntityFrameworkCore.Database.Command[20101]
Executed DbCommand (1ms) [Parameters=[@p0='?' (Size = 56), @p1='?' (DbType = DateTime), @p2='?' (DbType = Int32), @p3='?' (Size = 1), @p4='?' (Size = 11)], CommandType='Text', CommandTimeout='30']
INSERT INTO "AutoHistory" ("Changed", "Created", "Kind", "RowId", "TableName")
VALUES (@p0, @p1, @p2, @p3, @p4);
SELECT "Id"
FROM "AutoHistory"
WHERE changes() = 1 AND "rowid" = last_insert_rowid();
The result is that, 'RowId' was forced to be the same as 'Id' in AutoHistory. Or it will throw Concurrency Exception.
So the AutoHistory looks like this, all records happened to have same 'Id' and 'RowId' will insert with success, others fail with exception.
| Id | RowId | TableName | Changed | Kind | Created |
|---|---|---|---|---|---|
| 1 | 1 | GenericUser | {"before":{"Function":null},"after":{"Function":"LPL"}} | 3 | 2022-12-21 06:29:54.4720725 |
| 2 | 2 | GenericUser | {"before":{"Function":null},"after":{"Function":"LPL"}} | 3 | 2022-12-21 12:42:43.4858065 |
| 3 | 3 | GenericUser | {"before":{"Function":null},"after":{"Function":"ICX"}} | 3 | 2022-12-22 01:48:10.653962 |
| 4 | 4 | GenericUser | {"before":{"Function":null},"after":{"Function":"Battery"}} | 3 | 2022-12-22 01:51:59.7880273 |
| 5 | 5 | GenericUser | {"before":{"Function":"Ext"},"after":{"Function":"LPL"}} | 3 | 2022-12-22 01:52:59.1114256 |
Wondering that if the 'PrimaryKey' produced the 'RowId' with certain restrictions?
private static string PrimaryKey(this EntityEntry entry)
{
var key = entry.Metadata.FindPrimaryKey();
var values = new List<object>();
foreach (var property in key.Properties)
{
var value = entry.Property(property.Name).CurrentValue;
if (value != null)
{
values.Add(value);
}
}
return string.Join(",", values);
}