Complete some TODOs.

src/AbpDesk/AbpDesk.Application/AbpDesk/Tickets/TicketAppService.cs

@@ -25,7 +25,7 @@ namespace AbpDesk.Tickets
 
         public async Task<ListResultDto<TicketDto>> GetAll(GetAllTicketsInput input)
         {
-            //TODO: Use conventional unit of work for application services when it's available!
+            //Use conventional unit of work for application services when it's available!
             using (var unitOfWork = _unitOfWorkManager.Begin())
             {
                 var tickets = _ticketRepository

src/AbpDesk/AbpDesk.ConsoleDemo/AbpDesk/ConsoleDemo/Program.cs

@@ -9,19 +9,29 @@ namespace AbpDesk.ConsoleDemo
     public class Program
     {
         public static void Main(string[] args)
+        {
+            try
+            {
+                RunDemo();
+            }
+            catch (Exception ex)
+            {
+                Console.WriteLine("ERROR: " + ex.Message);
+                Console.ReadLine();
+            }
+        }
+
+        private static void RunDemo()
         {
             var services = new ServiceCollection();
 
-            var application = services.AddApplication<AbpDeskConsoleDemoModule>(options =>
-            {
-                AddPlugIns(options);
-            });
+            var application = services.AddApplication<AbpDeskConsoleDemoModule>(options => { AddPlugIns(options); });
 
             using (var scope = services.BuildServiceProvider().CreateScope())
             {
                 application.Initialize(scope.ServiceProvider);
 
-                RunDemo(application);
+                RunListers(application);
 
                 Console.WriteLine("Press ENTER to run again...");
                 Console.ReadLine();
@@ -30,7 +40,7 @@ namespace AbpDesk.ConsoleDemo
             }
         }
 
-        private static void RunDemo(AbpApplication application)
+        private static void RunListers(AbpApplication application)
         {
             application
                 .ServiceProvider

src/AbpDesk/AbpDesk.Domain/AbpDesk/Tickets/Ticket.cs

@@ -5,7 +5,7 @@ using Volo.Abp.Domain.Entities;
 
 namespace AbpDesk.Tickets
 {
-    public class Ticket : AggregateRoot<int>
+    public class Ticket : AggregateRoot<int>, IHasConcurrencyStamp
     {
         public const int MaxTitleLength = 256;
 
@@ -18,6 +18,8 @@ namespace AbpDesk.Tickets
         [MaxLength(MaxBodyLength)]
         public string Body { get; set; }
 
+        public string ConcurrencyStamp { get; set; }
+
         protected Ticket()
         {
             

src/AbpDesk/AbpDesk.EntityFrameworkCore/AbpDesk/EntityFrameworkCore/AbpDeskDbContext.cs

@@ -23,6 +23,7 @@ namespace AbpDesk.EntityFrameworkCore
             modelBuilder.Entity<Ticket>(builder =>
             {
                 builder.ToTable("DskTickets");
+                builder.Property(t => t.ConcurrencyStamp).IsConcurrencyToken();
             });
         }
     }

src/AbpDesk/AbpDesk.EntityFrameworkCore/Migrations/20170123062008_Added_ConcurrencyStamp_To_Ticket.Designer.cs

@@ -0,0 +1,40 @@
+using System;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Metadata;
+using Microsoft.EntityFrameworkCore.Migrations;
+using AbpDesk.EntityFrameworkCore;
+
+namespace AbpDesk.EntityFrameworkCore.Migrations
+{
+    [DbContext(typeof(AbpDeskDbContext))]
+    [Migration("20170123062008_Added_ConcurrencyStamp_To_Ticket")]
+    partial class Added_ConcurrencyStamp_To_Ticket
+    {
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+            modelBuilder
+                .HasAnnotation("ProductVersion", "1.1.0-rtm-22752")
+                .HasAnnotation("SqlServer:ValueGenerationStrategy", SqlServerValueGenerationStrategy.IdentityColumn);
+
+            modelBuilder.Entity("AbpDesk.Tickets.Ticket", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<string>("Body")
+                        .HasMaxLength(65536);
+
+                    b.Property<string>("ConcurrencyStamp");
+
+                    b.Property<string>("Title")
+                        .IsRequired()
+                        .HasMaxLength(256);
+
+                    b.HasKey("Id");
+
+                    b.ToTable("DskTickets");
+                });
+        }
+    }
+}

src/AbpDesk/AbpDesk.EntityFrameworkCore/Migrations/20170123062008_Added_ConcurrencyStamp_To_Ticket.cs

@@ -0,0 +1,24 @@
+using System;
+using System.Collections.Generic;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+namespace AbpDesk.EntityFrameworkCore.Migrations
+{
+    public partial class Added_ConcurrencyStamp_To_Ticket : Migration
+    {
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AddColumn<string>(
+                name: "ConcurrencyStamp",
+                table: "DskTickets",
+                nullable: true);
+        }
+
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropColumn(
+                name: "ConcurrencyStamp",
+                table: "DskTickets");
+        }
+    }
+}

src/AbpDesk/AbpDesk.EntityFrameworkCore/Migrations/AbpDeskDbContextModelSnapshot.cs

@@ -24,6 +24,8 @@ namespace AbpDesk.EntityFrameworkCore.Migrations
                     b.Property<string>("Body")
                         .HasMaxLength(65536);
 
+                    b.Property<string>("ConcurrencyStamp");
+
                     b.Property<string>("Title")
                         .IsRequired()
                         .HasMaxLength(256);

src/Volo.Abp.EntityFrameworkCore/Volo/Abp/Domain/Repositories/EntityFrameworkCore/EfCoreRepository.cs

@@ -93,7 +93,7 @@ namespace Volo.Abp.Domain.Repositories.EntityFrameworkCore
 
             if (entity is IHasConcurrencyStamp)
             {
-                (entity as IHasConcurrencyStamp).ConcurrencyStamp = Guid.NewGuid().ToString(); //TODO: Use IGuidGenerator!
+                (entity as IHasConcurrencyStamp).ConcurrencyStamp = Guid.NewGuid().ToString();
             }
 
             return DbContext.Update(entity).Entity;

src/Volo.Abp.EntityFrameworkCore/Volo/Abp/EntityFrameworkCore/AbpDbContext.cs

@@ -14,6 +14,13 @@ namespace Volo.Abp.EntityFrameworkCore
 
         }
 
+        protected override void OnModelCreating(ModelBuilder modelBuilder)
+        {
+            base.OnModelCreating(modelBuilder);
+
+            //TODO: Automatically configure ConcurrencyStamp
+        }
+
         public override int SaveChanges(bool acceptAllChangesOnSuccess)
         {
             try
@@ -22,7 +29,6 @@ namespace Volo.Abp.EntityFrameworkCore
             }
             catch (DbUpdateConcurrencyException ex)
             {
-                //TODO: Better exception message using DbUpdateConcurrencyException
                 throw new AbpDbConcurrencyException(ex.Message, ex);
             }
         }
@@ -35,7 +41,6 @@ namespace Volo.Abp.EntityFrameworkCore
             }
             catch (DbUpdateConcurrencyException ex)
             {
-                //TODO: Better exception message using DbUpdateConcurrencyException
                 throw new AbpDbConcurrencyException(ex.Message, ex);
             }
         }

src/Volo.Abp.EntityFrameworkCore/Volo/Abp/EntityFrameworkCore/DependencyInjection/DbContextOptionsFactory.cs

@@ -33,7 +33,7 @@ namespace Volo.Abp.EntityFrameworkCore.DependencyInjection
                 }
                 else
                 {
-                    throw new AbpException("Should set a configure action for dbcontext"); //TODO: Better message
+                    throw new AbpException($"No configuration found for {typeof(DbContext).AssemblyQualifiedName}! Use services.Configure<AbpDbContextOptions>(...) to configure it.");
                 }
 
                 return context.DbContextOptions.Options;

src/Volo.Abp.Identity.EntityFrameworkCore/Migrations/20170123063841_Remove_Unique_Index_Constraints.Designer.cs

@@ -0,0 +1,231 @@
+using System;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Metadata;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Volo.Abp.Identity.EntityFrameworkCore;
+
+namespace Volo.Abp.Identity.EntityFrameworkCore.Migrations
+{
+    [DbContext(typeof(IdentityDbContext))]
+    [Migration("20170123063841_Remove_Unique_Index_Constraints")]
+    partial class Remove_Unique_Index_Constraints
+    {
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+            modelBuilder
+                .HasAnnotation("ProductVersion", "1.1.0-rtm-22752")
+                .HasAnnotation("SqlServer:ValueGenerationStrategy", SqlServerValueGenerationStrategy.IdentityColumn);
+
+            modelBuilder.Entity("Volo.Abp.Identity.IdentityRole", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<string>("ConcurrencyStamp")
+                        .IsConcurrencyToken();
+
+                    b.Property<string>("Name")
+                        .HasMaxLength(256);
+
+                    b.Property<string>("NormalizedName")
+                        .HasMaxLength(256);
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("NormalizedName")
+                        .HasName("RoleNameIndex");
+
+                    b.ToTable("IdentityRoles");
+                });
+
+            modelBuilder.Entity("Volo.Abp.Identity.IdentityRoleClaim", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<string>("ClaimType");
+
+                    b.Property<string>("ClaimValue");
+
+                    b.Property<Guid>("RoleId");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("RoleId");
+
+                    b.ToTable("IdentityRoleClaims");
+                });
+
+            modelBuilder.Entity("Volo.Abp.Identity.IdentityUser", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<int>("AccessFailedCount");
+
+                    b.Property<string>("ConcurrencyStamp")
+                        .IsConcurrencyToken();
+
+                    b.Property<string>("Email")
+                        .HasMaxLength(256);
+
+                    b.Property<bool>("EmailConfirmed");
+
+                    b.Property<bool>("LockoutEnabled");
+
+                    b.Property<DateTimeOffset?>("LockoutEnd");
+
+                    b.Property<string>("NormalizedEmail")
+                        .HasMaxLength(256);
+
+                    b.Property<string>("NormalizedUserName")
+                        .HasMaxLength(256);
+
+                    b.Property<string>("PasswordHash");
+
+                    b.Property<string>("PhoneNumber");
+
+                    b.Property<bool>("PhoneNumberConfirmed");
+
+                    b.Property<string>("SecurityStamp");
+
+                    b.Property<bool>("TwoFactorEnabled");
+
+                    b.Property<string>("UserName")
+                        .HasMaxLength(256);
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("NormalizedEmail")
+                        .HasName("EmailIndex");
+
+                    b.HasIndex("NormalizedUserName")
+                        .HasName("UserNameIndex");
+
+                    b.ToTable("IdentityUsers");
+                });
+
+            modelBuilder.Entity("Volo.Abp.Identity.IdentityUserClaim", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<string>("ClaimType");
+
+                    b.Property<string>("ClaimValue");
+
+                    b.Property<Guid>("UserId");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("IdentityUserClaims");
+                });
+
+            modelBuilder.Entity("Volo.Abp.Identity.IdentityUserLogin", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<string>("LoginProvider");
+
+                    b.Property<string>("ProviderDisplayName");
+
+                    b.Property<string>("ProviderKey");
+
+                    b.Property<Guid>("UserId");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("UserId", "LoginProvider", "ProviderKey");
+
+                    b.ToTable("IdentityUserLogins");
+                });
+
+            modelBuilder.Entity("Volo.Abp.Identity.IdentityUserRole", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<Guid>("RoleId");
+
+                    b.Property<Guid>("UserId");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("RoleId");
+
+                    b.HasIndex("UserId", "RoleId");
+
+                    b.ToTable("IdentityUserRoles");
+                });
+
+            modelBuilder.Entity("Volo.Abp.Identity.IdentityUserToken", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<string>("LoginProvider");
+
+                    b.Property<string>("Name");
+
+                    b.Property<Guid>("UserId");
+
+                    b.Property<string>("Value");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("UserId", "LoginProvider", "Name");
+
+                    b.ToTable("IdentityUserTokens");
+                });
+
+            modelBuilder.Entity("Volo.Abp.Identity.IdentityRoleClaim", b =>
+                {
+                    b.HasOne("Volo.Abp.Identity.IdentityRole")
+                        .WithMany("Claims")
+                        .HasForeignKey("RoleId")
+                        .OnDelete(DeleteBehavior.Cascade);
+                });
+
+            modelBuilder.Entity("Volo.Abp.Identity.IdentityUserClaim", b =>
+                {
+                    b.HasOne("Volo.Abp.Identity.IdentityUser")
+                        .WithMany("Claims")
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade);
+                });
+
+            modelBuilder.Entity("Volo.Abp.Identity.IdentityUserLogin", b =>
+                {
+                    b.HasOne("Volo.Abp.Identity.IdentityUser")
+                        .WithMany("Logins")
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade);
+                });
+
+            modelBuilder.Entity("Volo.Abp.Identity.IdentityUserRole", b =>
+                {
+                    b.HasOne("Volo.Abp.Identity.IdentityRole")
+                        .WithMany()
+                        .HasForeignKey("RoleId")
+                        .OnDelete(DeleteBehavior.Cascade);
+
+                    b.HasOne("Volo.Abp.Identity.IdentityUser")
+                        .WithMany("Roles")
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade);
+                });
+
+            modelBuilder.Entity("Volo.Abp.Identity.IdentityUserToken", b =>
+                {
+                    b.HasOne("Volo.Abp.Identity.IdentityUser")
+                        .WithMany("Tokens")
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade);
+                });
+        }
+    }
+}

src/Volo.Abp.Identity.EntityFrameworkCore/Migrations/20170123063841_Remove_Unique_Index_Constraints.cs

@@ -0,0 +1,110 @@
+using System;
+using System.Collections.Generic;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+namespace Volo.Abp.Identity.EntityFrameworkCore.Migrations
+{
+    public partial class Remove_Unique_Index_Constraints : Migration
+    {
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropIndex(
+                name: "IX_IdentityUserTokens_UserId_LoginProvider_Name",
+                table: "IdentityUserTokens");
+
+            migrationBuilder.DropIndex(
+                name: "IX_IdentityUserRoles_UserId_RoleId",
+                table: "IdentityUserRoles");
+
+            migrationBuilder.DropIndex(
+                name: "IX_IdentityUserLogins_UserId_LoginProvider_ProviderKey",
+                table: "IdentityUserLogins");
+
+            migrationBuilder.DropIndex(
+                name: "UserNameIndex",
+                table: "IdentityUsers");
+
+            migrationBuilder.DropIndex(
+                name: "RoleNameIndex",
+                table: "IdentityRoles");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_IdentityUserTokens_UserId_LoginProvider_Name",
+                table: "IdentityUserTokens",
+                columns: new[] { "UserId", "LoginProvider", "Name" });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_IdentityUserRoles_UserId_RoleId",
+                table: "IdentityUserRoles",
+                columns: new[] { "UserId", "RoleId" });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_IdentityUserLogins_UserId_LoginProvider_ProviderKey",
+                table: "IdentityUserLogins",
+                columns: new[] { "UserId", "LoginProvider", "ProviderKey" });
+
+            migrationBuilder.CreateIndex(
+                name: "UserNameIndex",
+                table: "IdentityUsers",
+                column: "NormalizedUserName");
+
+            migrationBuilder.CreateIndex(
+                name: "RoleNameIndex",
+                table: "IdentityRoles",
+                column: "NormalizedName");
+        }
+
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropIndex(
+                name: "IX_IdentityUserTokens_UserId_LoginProvider_Name",
+                table: "IdentityUserTokens");
+
+            migrationBuilder.DropIndex(
+                name: "IX_IdentityUserRoles_UserId_RoleId",
+                table: "IdentityUserRoles");
+
+            migrationBuilder.DropIndex(
+                name: "IX_IdentityUserLogins_UserId_LoginProvider_ProviderKey",
+                table: "IdentityUserLogins");
+
+            migrationBuilder.DropIndex(
+                name: "UserNameIndex",
+                table: "IdentityUsers");
+
+            migrationBuilder.DropIndex(
+                name: "RoleNameIndex",
+                table: "IdentityRoles");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_IdentityUserTokens_UserId_LoginProvider_Name",
+                table: "IdentityUserTokens",
+                columns: new[] { "UserId", "LoginProvider", "Name" },
+                unique: true);
+
+            migrationBuilder.CreateIndex(
+                name: "IX_IdentityUserRoles_UserId_RoleId",
+                table: "IdentityUserRoles",
+                columns: new[] { "UserId", "RoleId" },
+                unique: true);
+
+            migrationBuilder.CreateIndex(
+                name: "IX_IdentityUserLogins_UserId_LoginProvider_ProviderKey",
+                table: "IdentityUserLogins",
+                columns: new[] { "UserId", "LoginProvider", "ProviderKey" },
+                unique: true);
+
+            migrationBuilder.CreateIndex(
+                name: "UserNameIndex",
+                table: "IdentityUsers",
+                column: "NormalizedUserName",
+                unique: true);
+
+            migrationBuilder.CreateIndex(
+                name: "RoleNameIndex",
+                table: "IdentityRoles",
+                column: "NormalizedName",
+                unique: true);
+        }
+    }
+}

src/Volo.Abp.Identity.EntityFrameworkCore/Migrations/IdentityDbContextModelSnapshot.cs

@@ -33,7 +33,6 @@ namespace Volo.Abp.Identity.EntityFrameworkCore.Migrations
                     b.HasKey("Id");
 
                     b.HasIndex("NormalizedName")
-                        .IsUnique()
                         .HasName("RoleNameIndex");
 
                     b.ToTable("IdentityRoles");
@@ -101,7 +100,6 @@ namespace Volo.Abp.Identity.EntityFrameworkCore.Migrations
                         .HasName("EmailIndex");
 
                     b.HasIndex("NormalizedUserName")
-                        .IsUnique()
                         .HasName("UserNameIndex");
 
                     b.ToTable("IdentityUsers");
@@ -140,8 +138,7 @@ namespace Volo.Abp.Identity.EntityFrameworkCore.Migrations
 
                     b.HasKey("Id");
 
-                    b.HasIndex("UserId", "LoginProvider", "ProviderKey")
-                        .IsUnique();
+                    b.HasIndex("UserId", "LoginProvider", "ProviderKey");
 
                     b.ToTable("IdentityUserLogins");
                 });
@@ -159,8 +156,7 @@ namespace Volo.Abp.Identity.EntityFrameworkCore.Migrations
 
                     b.HasIndex("RoleId");
 
-                    b.HasIndex("UserId", "RoleId")
-                        .IsUnique();
+                    b.HasIndex("UserId", "RoleId");
 
                     b.ToTable("IdentityUserRoles");
                 });
@@ -180,8 +176,7 @@ namespace Volo.Abp.Identity.EntityFrameworkCore.Migrations
 
                     b.HasKey("Id");
 
-                    b.HasIndex("UserId", "LoginProvider", "Name")
-                        .IsUnique();
+                    b.HasIndex("UserId", "LoginProvider", "Name");
 
                     b.ToTable("IdentityUserTokens");
                 });

src/Volo.Abp.Identity.EntityFrameworkCore/Volo/Abp/Identity/EntityFrameworkCore/IdentityDbContext.cs

@@ -61,15 +61,17 @@ namespace Volo.Abp.Identity.EntityFrameworkCore
         /// </param>
         protected override void OnModelCreating(ModelBuilder builder)
         {
+            base.OnModelCreating(builder);
+
             //TODO: Set Default Values for properties
 
-            //TODO: Unique indexes can be a problem for a multi-tenant application. Think again.
+            //TODO: Split configuration to dedicated classes.
 
             builder.Entity<IdentityUser>(b =>
             {
                 b.ToTable("IdentityUsers");
 
-                b.Property(u => u.ConcurrencyStamp).IsConcurrencyToken(); //TODO: Do automatically?
+                b.Property(u => u.ConcurrencyStamp).IsConcurrencyToken();
                 b.Property(u => u.UserName).HasMaxLength(256);
                 b.Property(u => u.NormalizedUserName).HasMaxLength(256);
                 b.Property(u => u.Email).HasMaxLength(256);
@@ -80,7 +82,7 @@ namespace Volo.Abp.Identity.EntityFrameworkCore
                 b.HasMany(u => u.Roles).WithOne().HasForeignKey(ur => ur.UserId).IsRequired();
                 b.HasMany(u => u.Tokens).WithOne().HasForeignKey(ur => ur.UserId).IsRequired();
 
-                b.HasIndex(u => u.NormalizedUserName).HasName("UserNameIndex").IsUnique();
+                b.HasIndex(u => u.NormalizedUserName).HasName("UserNameIndex");
                 b.HasIndex(u => u.NormalizedEmail).HasName("EmailIndex");
             });
 
@@ -96,7 +98,7 @@ namespace Volo.Abp.Identity.EntityFrameworkCore
                 //b.HasMany(r => r.Users).WithOne().HasForeignKey(ur => ur.RoleId).IsRequired();
                 b.HasMany(r => r.Claims).WithOne().HasForeignKey(rc => rc.RoleId).IsRequired();
 
-                b.HasIndex(r => r.NormalizedName).HasName("RoleNameIndex").IsUnique();
+                b.HasIndex(r => r.NormalizedName).HasName("RoleNameIndex");
             });
 
             builder.Entity<IdentityUserClaim>(b => 
@@ -115,21 +117,21 @@ namespace Volo.Abp.Identity.EntityFrameworkCore
 
                 b.HasOne<IdentityRole>().WithMany().HasForeignKey(ur => ur.RoleId).IsRequired();
 
-                b.HasIndex(r => new { r.UserId, r.RoleId }).IsUnique();
+                b.HasIndex(r => new { r.UserId, r.RoleId });
             });
 
             builder.Entity<IdentityUserLogin>(b =>
             {
                 b.ToTable("IdentityUserLogins");
 
-                b.HasIndex(l => new { l.UserId, l.LoginProvider, l.ProviderKey }).IsUnique();
+                b.HasIndex(l => new { l.UserId, l.LoginProvider, l.ProviderKey });
             });
 
             builder.Entity<IdentityUserToken>(b => 
             {
                 b.ToTable("IdentityUserTokens");
 
-                b.HasIndex(l => new { l.UserId, l.LoginProvider, l.Name }).IsUnique();
+                b.HasIndex(l => new { l.UserId, l.LoginProvider, l.Name });
             });
         }
     }

src/Volo.Abp/Volo/Abp/Uow/IUnitOfWork.cs

@@ -11,6 +11,8 @@ namespace Volo.Abp.Uow
         [CanBeNull]
         IDatabaseApi FindDatabaseApi([NotNull] string id);
 
+        //TODO: Move Database API methods to another interface!
+
         [NotNull]
         IDatabaseApi GetOrAddDatabaseApi(string id, Func<IDatabaseApi> factory);