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61 changes: 61 additions & 0 deletions
61
src/Examples/DapperExample/AtomicOperations/AmbientTransaction.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,61 @@ | ||
| using System.Data.Common; | ||
| using JsonApiDotNetCore; | ||
| using JsonApiDotNetCore.AtomicOperations; | ||
|
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| namespace DapperExample.AtomicOperations; | ||
|
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| /// <summary> | ||
| /// Represents an ADO.NET transaction in a JSON:API atomic:operations request. | ||
| /// </summary> | ||
| internal sealed class AmbientTransaction : IOperationsTransaction | ||
| { | ||
| private readonly AmbientTransactionFactory _owner; | ||
|
|
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| public DbTransaction Current { get; } | ||
|
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| /// <inheritdoc /> | ||
| public string TransactionId { get; } | ||
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| public AmbientTransaction(AmbientTransactionFactory owner, DbTransaction current, Guid transactionId) | ||
| { | ||
| ArgumentGuard.NotNull(owner); | ||
| ArgumentGuard.NotNull(current); | ||
|
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| _owner = owner; | ||
| Current = current; | ||
| TransactionId = transactionId.ToString(); | ||
| } | ||
|
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| /// <inheritdoc /> | ||
| public Task BeforeProcessOperationAsync(CancellationToken cancellationToken) | ||
| { | ||
| return Task.CompletedTask; | ||
| } | ||
|
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| /// <inheritdoc /> | ||
| public Task AfterProcessOperationAsync(CancellationToken cancellationToken) | ||
| { | ||
| return Task.CompletedTask; | ||
| } | ||
|
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| /// <inheritdoc /> | ||
| public Task CommitAsync(CancellationToken cancellationToken) | ||
| { | ||
| return Current.CommitAsync(cancellationToken); | ||
| } | ||
|
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| /// <inheritdoc /> | ||
| public async ValueTask DisposeAsync() | ||
| { | ||
| DbConnection? connection = Current.Connection; | ||
|
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| await Current.DisposeAsync(); | ||
|
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| if (connection != null) | ||
| { | ||
| await connection.DisposeAsync(); | ||
| } | ||
|
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| _owner.Detach(this); | ||
| } | ||
| } |
78 changes: 78 additions & 0 deletions
78
src/Examples/DapperExample/AtomicOperations/AmbientTransactionFactory.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,78 @@ | ||
| using System.Data.Common; | ||
| using DapperExample.TranslationToSql.DataModel; | ||
| using JsonApiDotNetCore; | ||
| using JsonApiDotNetCore.AtomicOperations; | ||
| using JsonApiDotNetCore.Configuration; | ||
|
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| namespace DapperExample.AtomicOperations; | ||
|
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| /// <summary> | ||
| /// Provides transaction support for JSON:API atomic:operation requests using ADO.NET. | ||
| /// </summary> | ||
| public sealed class AmbientTransactionFactory : IOperationsTransactionFactory | ||
| { | ||
| private readonly IJsonApiOptions _options; | ||
| private readonly IDataModelService _dataModelService; | ||
|
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| internal AmbientTransaction? AmbientTransaction { get; private set; } | ||
|
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| public AmbientTransactionFactory(IJsonApiOptions options, IDataModelService dataModelService) | ||
| { | ||
| ArgumentGuard.NotNull(options); | ||
| ArgumentGuard.NotNull(dataModelService); | ||
|
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| _options = options; | ||
| _dataModelService = dataModelService; | ||
| } | ||
|
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| internal async Task<AmbientTransaction> BeginTransactionAsync(CancellationToken cancellationToken) | ||
| { | ||
| var instance = (IOperationsTransactionFactory)this; | ||
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| IOperationsTransaction transaction = await instance.BeginTransactionAsync(cancellationToken); | ||
| return (AmbientTransaction)transaction; | ||
| } | ||
|
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| async Task<IOperationsTransaction> IOperationsTransactionFactory.BeginTransactionAsync(CancellationToken cancellationToken) | ||
| { | ||
| if (AmbientTransaction != null) | ||
| { | ||
| throw new InvalidOperationException("Cannot start transaction because another transaction is already active."); | ||
| } | ||
|
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| DbConnection dbConnection = _dataModelService.CreateConnection(); | ||
|
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| try | ||
| { | ||
| await dbConnection.OpenAsync(cancellationToken); | ||
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| DbTransaction transaction = _options.TransactionIsolationLevel != null | ||
| ? await dbConnection.BeginTransactionAsync(_options.TransactionIsolationLevel.Value, cancellationToken) | ||
| : await dbConnection.BeginTransactionAsync(cancellationToken); | ||
|
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| var transactionId = Guid.NewGuid(); | ||
| AmbientTransaction = new AmbientTransaction(this, transaction, transactionId); | ||
|
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| return AmbientTransaction; | ||
| } | ||
| catch (DbException) | ||
| { | ||
| await dbConnection.DisposeAsync(); | ||
| throw; | ||
| } | ||
| } | ||
|
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| internal void Detach(AmbientTransaction ambientTransaction) | ||
| { | ||
| ArgumentGuard.NotNull(ambientTransaction); | ||
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| if (AmbientTransaction != null && AmbientTransaction == ambientTransaction) | ||
| { | ||
| AmbientTransaction = null; | ||
| } | ||
| else | ||
| { | ||
| throw new InvalidOperationException("Failed to detach ambient transaction."); | ||
| } | ||
| } | ||
| } |
16 changes: 16 additions & 0 deletions
16
src/Examples/DapperExample/Controllers/OperationsController.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,16 @@ | ||
| using JsonApiDotNetCore.AtomicOperations; | ||
| using JsonApiDotNetCore.Configuration; | ||
| using JsonApiDotNetCore.Controllers; | ||
| using JsonApiDotNetCore.Middleware; | ||
| using JsonApiDotNetCore.Resources; | ||
|
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| namespace DapperExample.Controllers; | ||
|
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| public sealed class OperationsController : JsonApiOperationsController | ||
| { | ||
| public OperationsController(IJsonApiOptions options, IResourceGraph resourceGraph, ILoggerFactory loggerFactory, IOperationsProcessor processor, | ||
| IJsonApiRequest request, ITargetedFields targetedFields) | ||
| : base(options, resourceGraph, loggerFactory, processor, request, targetedFields) | ||
| { | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,19 @@ | ||
| <Project Sdk="Microsoft.NET.Sdk.Web"> | ||
| <PropertyGroup> | ||
| <TargetFramework>$(TargetFrameworkName)</TargetFramework> | ||
| </PropertyGroup> | ||
|
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| <ItemGroup> | ||
| <ProjectReference Include="..\..\JsonApiDotNetCore\JsonApiDotNetCore.csproj" /> | ||
| <ProjectReference Include="..\..\JsonApiDotNetCore.SourceGenerators\JsonApiDotNetCore.SourceGenerators.csproj" OutputItemType="Analyzer" | ||
| ReferenceOutputAssembly="false" /> | ||
| </ItemGroup> | ||
|
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| <ItemGroup> | ||
| <PackageReference Include="Dapper" Version="$(DapperVersion)" /> | ||
| <PackageReference Include="Microsoft.EntityFrameworkCore" Version="$(EntityFrameworkCoreVersion)" /> | ||
| <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="$(EntityFrameworkCoreVersion)" /> | ||
| <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="$(NpgsqlVersion)" /> | ||
| <PackageReference Include="Pomelo.EntityFrameworkCore.MySql" Version="$(EntityFrameworkCoreVersion)" /> | ||
| </ItemGroup> | ||
| </Project> |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,81 @@ | ||
| using DapperExample.Models; | ||
| using JetBrains.Annotations; | ||
| using JsonApiDotNetCore; | ||
| using Microsoft.EntityFrameworkCore; | ||
| using Microsoft.EntityFrameworkCore.Metadata; | ||
|
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| // @formatter:wrap_chained_method_calls chop_always | ||
|
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| namespace DapperExample.Data; | ||
|
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| [UsedImplicitly(ImplicitUseTargetFlags.Members)] | ||
| public sealed class AppDbContext : DbContext | ||
| { | ||
| private readonly IConfiguration _configuration; | ||
|
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| public DbSet<TodoItem> TodoItems => Set<TodoItem>(); | ||
| public DbSet<Person> People => Set<Person>(); | ||
| public DbSet<LoginAccount> LoginAccounts => Set<LoginAccount>(); | ||
| public DbSet<AccountRecovery> AccountRecoveries => Set<AccountRecovery>(); | ||
| public DbSet<Tag> Tags => Set<Tag>(); | ||
| public DbSet<RgbColor> RgbColors => Set<RgbColor>(); | ||
|
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| public AppDbContext(DbContextOptions<AppDbContext> options, IConfiguration configuration) | ||
| : base(options) | ||
| { | ||
| ArgumentGuard.NotNull(configuration); | ||
|
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| _configuration = configuration; | ||
| } | ||
|
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| protected override void OnModelCreating(ModelBuilder builder) | ||
| { | ||
| builder.Entity<Person>() | ||
| .HasMany(person => person.AssignedTodoItems) | ||
| .WithOne(todoItem => todoItem.Assignee); | ||
|
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| builder.Entity<Person>() | ||
| .HasMany(person => person.OwnedTodoItems) | ||
| .WithOne(todoItem => todoItem.Owner); | ||
|
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| builder.Entity<Person>() | ||
| .HasOne(person => person.Account) | ||
| .WithOne(loginAccount => loginAccount.Person) | ||
| .HasForeignKey<Person>("AccountId"); | ||
|
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| builder.Entity<LoginAccount>() | ||
| .HasOne(loginAccount => loginAccount.Recovery) | ||
| .WithOne(accountRecovery => accountRecovery.Account) | ||
| .HasForeignKey<LoginAccount>("RecoveryId"); | ||
|
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| builder.Entity<Tag>() | ||
| .HasOne(tag => tag.Color) | ||
| .WithOne(rgbColor => rgbColor.Tag) | ||
| .HasForeignKey<RgbColor>("TagId"); | ||
|
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| var databaseProvider = _configuration.GetValue<DatabaseProvider>("DatabaseProvider"); | ||
|
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| if (databaseProvider != DatabaseProvider.SqlServer) | ||
| { | ||
| // In this example project, all cascades happen in the database, but SQL Server doesn't support that very well. | ||
| AdjustDeleteBehaviorForJsonApi(builder); | ||
| } | ||
| } | ||
|
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| private static void AdjustDeleteBehaviorForJsonApi(ModelBuilder builder) | ||
| { | ||
| foreach (IMutableForeignKey foreignKey in builder.Model.GetEntityTypes() | ||
| .SelectMany(entityType => entityType.GetForeignKeys())) | ||
| { | ||
| if (foreignKey.DeleteBehavior == DeleteBehavior.ClientSetNull) | ||
| { | ||
| foreignKey.DeleteBehavior = DeleteBehavior.SetNull; | ||
| } | ||
|
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| if (foreignKey.DeleteBehavior == DeleteBehavior.ClientCascade) | ||
| { | ||
| foreignKey.DeleteBehavior = DeleteBehavior.Cascade; | ||
| } | ||
| } | ||
| } | ||
| } |
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