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Rework database loading/migration

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This commit is contained in:
Chris Kaczor
2023-04-06 17:20:38 -04:00
parent b5f570688d
commit 6514f23329
21 changed files with 561 additions and 569 deletions
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62
Application/Entities.cs
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@@ -1,10 +1,7 @@
using Dapper;
using FeedCenter.Data;
using FeedCenter.Data;
using FeedCenter.Options;
using Realms;
using System;
using System.Data.SqlServerCe;
using System.IO;
using System.Linq;
namespace FeedCenter
@@ -19,60 +16,10 @@ namespace FeedCenter
public FeedCenterEntities()
{
Load();
}
public void Refresh()
{
Realm.Refresh();
}
public void Load()
{
var realmConfiguration = new RealmConfiguration($"{Database.DatabasePath}/FeedCenter.realm");
var realmConfiguration = new RealmConfiguration($"{Database.DatabaseFile}");
Realm = Realm.GetInstance(realmConfiguration);
if (File.Exists(Database.DatabaseFile))
{
using var connection = new SqlCeConnection($"Data Source={Database.DatabaseFile}");
connection.Open();
var settings = connection.Query<Setting>("SELECT * FROM Setting").OrderBy(s => s.Version).ToList();
var categories = connection.Query<Category>("SELECT * FROM Category").ToList();
var feeds = connection.Query<Feed>("SELECT * FROM Feed").ToList();
var feedItems = connection.Query<FeedItem>("SELECT * FROM FeedItem").ToList();
Realm.Write(() =>
{
foreach (var category in categories)
{
category.Feeds = feeds.Where(f => f.CategoryId == category.Id).ToList();
}
foreach (var feed in feeds)
{
feed.Category = categories.FirstOrDefault(c => c.Id == feed.CategoryId);
}
foreach (var feedItem in feedItems)
{
var feed = feeds.First(f => f.Id == feedItem.FeedId);
feed.Items.Add(feedItem);
}
Realm.Add(feeds);
Realm.Add(categories);
Realm.Add(settings, true);
});
connection.Close();
File.Move(Database.DatabaseFile, Database.DatabaseFile + "_bak");
}
Settings = new RealmObservableCollection<Setting>(Realm);
Feeds = new RealmObservableCollection<Feed>(Realm);
Categories = new RealmObservableCollection<Category>(Realm);
@@ -83,6 +30,11 @@ namespace FeedCenter
}
}
public void Refresh()
{
Realm.Refresh();
}
public void SaveChanges(Action action)
{
Realm.Write(action);