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ExplicitTransactionDecorator.cs
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ExplicitTransactionDecorator.cs
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using System;
using System.Threading.Tasks;
using JetBrains.Annotations;
using MyCompany.ECommerce.TechnicalStuff.Persistence;
using MyCompany.ECommerce.TechnicalStuff.ProcessModel;
namespace MyCompany.ECommerce.TechnicalStuff.Transactions;
[PublicAPI]
public class ExplicitTransactionDecorator<TCommand> : CommandHandler<TCommand>
where TCommand : struct, Command
{
private readonly CommandHandler<TCommand> _decorated;
private readonly MainDb _db;
public ExplicitTransactionDecorator(CommandHandler<TCommand> decorated, MainDb db)
{
_decorated = decorated;
_db = db;
}
public async Task Handle(TCommand command)
{
await _db.BeginTransaction();
try
{
await _decorated.Handle(command);
await _db.CommitCurrentTransaction();
}
catch (Exception)
{
await _db.RollbackCurrentTransaction();
throw;
}
}
}
[PublicAPI]
public class ExplicitTransactionDecorator<TCommand, TResult> : CommandHandler<TCommand, TResult>
where TCommand : struct, Command
{
private readonly CommandHandler<TCommand, TResult> _decorated;
private readonly MainDb _db;
public ExplicitTransactionDecorator(CommandHandler<TCommand, TResult> decorated, MainDb db)
{
_decorated = decorated;
_db = db;
}
public async Task<TResult> Handle(TCommand command)
{
await _db.BeginTransaction();
try
{
var result = await _decorated.Handle(command);
await _db.CommitCurrentTransaction();
return result;
}
catch (Exception)
{
await _db.RollbackCurrentTransaction();
throw;
}
}
}