Use bulk insertions to SQL.

.gitmodules

@@ -4,3 +4,6 @@
 [submodule "winfsp"]
 	path = winfsp
 	url = https://github.com/billziss-gh/winfsp/
+[submodule "EFCore.BulkExtensions"]
+	path = EFCore.BulkExtensions
+	url = https://github.com/claunia/EFCore.BulkExtensions

RomRepoMgr.Core/Workers/DatImporter.cs

@@ -29,6 +29,7 @@ using System.Diagnostics;
 using System.IO;
 using System.Linq;
 using Aaru.Checksums;
+using EFCore.BulkExtensions;
 using RomRepoMgr.Core.EventArgs;
 using RomRepoMgr.Core.Models;
 using RomRepoMgr.Core.Resources;
@@ -165,14 +166,13 @@ namespace RomRepoMgr.Core.Workers
                     var machine = new Machine
                     {
                         Name      = name,
-                        RomSet    = romSet,
+                        RomSetId  = romSet.Id,
                         CreatedOn = DateTime.UtcNow,
                         UpdatedOn = DateTime.UtcNow
                     };
 
                     machines[name] = machine;
 
-                    ctx.Machines.Add(machine);
                     position++;
                 }
 
@@ -183,6 +183,7 @@ namespace RomRepoMgr.Core.Workers
 
                 SetIndeterminateProgress?.Invoke(this, System.EventArgs.Empty);
 
+                ctx.BulkInsert(machines.Values.ToList(), b => b.SetOutputIdentity = true);
                 ctx.SaveChanges();
 
                 SetMessage?.Invoke(this, new MessageEventArgs
@@ -441,8 +442,15 @@ namespace RomRepoMgr.Core.Workers
 
                 SetIndeterminateProgress?.Invoke(this, System.EventArgs.Empty);
 
-                ctx.Files.AddRange(newFiles);
+                ctx.BulkInsert(newFiles, b => b.SetOutputIdentity = true);
-                ctx.FilesByMachines.AddRange(newFilesByMachine);
+
+                foreach(FileByMachine fbm in newFilesByMachine)
+                {
+                    fbm.FileId    = fbm.File.Id;
+                    fbm.MachineId = fbm.Machine.Id;
+                }
+
+                ctx.BulkInsert(newFilesByMachine);
 
                 ctx.SaveChanges();
 
@@ -562,8 +570,15 @@ namespace RomRepoMgr.Core.Workers
 
                 SetIndeterminateProgress?.Invoke(this, System.EventArgs.Empty);
 
-                ctx.Disks.AddRange(newDisks);
+                ctx.BulkInsert(newDisks, b => b.SetOutputIdentity = true);
-                ctx.DisksByMachines.AddRange(newDisksByMachine);
+
+                foreach(DiskByMachine dbm in newDisksByMachine)
+                {
+                    dbm.DiskId    = dbm.Disk.Id;
+                    dbm.MachineId = dbm.Machine.Id;
+                }
+
+                ctx.BulkInsert(newDisksByMachine);
 
                 ctx.SaveChanges();
 
@@ -697,8 +712,15 @@ namespace RomRepoMgr.Core.Workers
 
                 SetIndeterminateProgress?.Invoke(this, System.EventArgs.Empty);
 
-                ctx.Medias.AddRange(newMedias);
+                ctx.BulkInsert(newMedias, b => b.SetOutputIdentity = true);
-                ctx.MediasByMachines.AddRange(newMediasByMachine);
+
+                foreach(MediaByMachine mbm in newMediasByMachine)
+                {
+                    mbm.MediaId   = mbm.Media.Id;
+                    mbm.MachineId = mbm.Machine.Id;
+                }
+
+                ctx.BulkInsert(newMediasByMachine);
 
                 ctx.SaveChanges();
 

RomRepoMgr.Database/Models/DiskByMachine.cs

@@ -36,6 +36,8 @@ namespace RomRepoMgr.Database.Models
         [Required]
         public virtual Machine Machine { get; set; }
         [Required]
-        public string Name { get; set; }
+        public string Name { get;     set; }
+        public ulong DiskId    { get; set; }
+        public ulong MachineId { get; set; }
     }
 }

RomRepoMgr.Database/Models/FileByMachine.cs

@@ -36,6 +36,8 @@ namespace RomRepoMgr.Database.Models
         [Required]
         public virtual Machine Machine { get; set; }
         [Required]
-        public string Name { get; set; }
+        public string Name { get;     set; }
+        public ulong FileId    { get; set; }
+        public ulong MachineId { get; set; }
     }
 }

RomRepoMgr.Database/Models/Machine.cs

@@ -33,9 +33,10 @@ namespace RomRepoMgr.Database.Models
         [Required]
         public string Name { get; set; }
         [Required]
-        public virtual RomSet RomSet { get;                      set; }
+        public virtual RomSet RomSet { get;                        set; }
-        public virtual ICollection<FileByMachine>  Files  { get; set; }
+        public virtual ICollection<FileByMachine>  Files    { get; set; }
-        public virtual ICollection<DiskByMachine>  Disks  { get; set; }
+        public virtual ICollection<DiskByMachine>  Disks    { get; set; }
-        public virtual ICollection<MediaByMachine> Medias { get; set; }
+        public virtual ICollection<MediaByMachine> Medias   { get; set; }
+        public         long                        RomSetId { get; set; }
     }
 }

RomRepoMgr.Database/Models/MediaByMachine.cs

@@ -36,6 +36,8 @@ namespace RomRepoMgr.Database.Models
         [Required]
         public virtual Machine Machine { get; set; }
         [Required]
-        public string Name { get; set; }
+        public string Name { get;     set; }
+        public ulong MediaId   { get; set; }
+        public ulong MachineId { get; set; }
     }
 }

RomRepoMgr.Database/RomRepoMgr.Database.csproj

@@ -20,6 +20,7 @@
     </ItemGroup>
 
     <ItemGroup>
+      <ProjectReference Include="..\EFCore.BulkExtensions\EFCore.BulkExtensions\EFCore.BulkExtensions.csproj" />
       <ProjectReference Include="..\RomRepoMgr.Settings\RomRepoMgr.Settings.csproj" />
     </ItemGroup>
 

RomRepoMgr.sln

@@ -12,6 +12,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SabreTools.Library", "Sabre
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "winfsp-netcore", "winfsp-netcore\winfsp-netcore.csproj", "{4B2B4DAC-39E2-417D-90F2-DCC97A5564B1}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "EFCore.BulkExtensions", "EFCore.BulkExtensions\EFCore.BulkExtensions\EFCore.BulkExtensions.csproj", "{E17E880B-F3A7-4D0E-9583-A0645CE25135}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -42,5 +44,9 @@ Global
 		{4B2B4DAC-39E2-417D-90F2-DCC97A5564B1}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{4B2B4DAC-39E2-417D-90F2-DCC97A5564B1}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{4B2B4DAC-39E2-417D-90F2-DCC97A5564B1}.Release|Any CPU.Build.0 = Release|Any CPU
+		{E17E880B-F3A7-4D0E-9583-A0645CE25135}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{E17E880B-F3A7-4D0E-9583-A0645CE25135}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{E17E880B-F3A7-4D0E-9583-A0645CE25135}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{E17E880B-F3A7-4D0E-9583-A0645CE25135}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 EndGlobal