public IUnitOfWorkCompleteHandle Begin(UnitOfWorkOptions options)
{
options.FillDefaultsForNonProvidedOptions(_defaultOptions);
if (options.Scope == TransactionScopeOption.Required && _currentUnitOfWorkProvider.Current != null)
{
return new InnerUnitOfWorkCompleteHandle();
}
var uow = _iocResolver.Resolve<IUnitOfWork>();
uow.Completed += (sender, args) =>
{
_currentUnitOfWorkProvider.Current = null;
};
uow.Failed += (sender, args) =>
{
_currentUnitOfWorkProvider.Current = null;
};
uow.Disposed += (sender, args) =>
{
_iocResolver.Release(uow);
};
uow.Begin(options);
_currentUnitOfWorkProvider.Current = uow;
return uow;
}
/// <summary>
/// 开始工作单元
/// </summary>
/// <param name="options">工作单元选项</param>
/// <returns></returns>
/// 这边可以看出只有一个IUnitOfWork对象会被创建, 而且由于这个对象是通过容器直接resolve的，
/// 那么ABP怎么知道该通过resolve得到什么样的实例呢？是EfUnitOfWork?还是MongoDbUnitOfWork？还是MemoryDbUnitOfWork？还是NhUnitOfWork？
/// 答案是ABP不知道，ABP作者假设你只会用其中一个模块，所以如果你把这四个module都加入到你的项目中，结果是不可预知的。
public IUnitOfWorkCompleteHandle Begin(UnitOfWorkOptions options)
{
//为未赋值的参数设置默认值
options.FillDefaultsForNonProvidedOptions(_defaultOptions);
if (options.Scope == TransactionScopeOption.Required && _currentUnitOfWorkProvider.Current != null)
{
//如果当前Scope的设置为Required（而非RequiredNew），并且当前已存在工作单元，那么久返回下面这样的一个对象
return new InnerUnitOfWorkCompleteHandle();
}
//走到这里，表示需要一个新的工作单元，通过IoC创建IUnitOfWork实现对象，然后开始工作单元，并设置此工作单元为当前工作单元
var uow = _iocResolver.Resolve<IUnitOfWork>();
uow.Completed += (sender, args) =>
{
_currentUnitOfWorkProvider.Current = null;
};
uow.Failed += (sender, args) =>
{
_currentUnitOfWorkProvider.Current = null;
};
uow.Disposed += (sender, args) =>
{
_iocResolver.Release(uow);
};
uow.Begin(options);
_currentUnitOfWorkProvider.Current = uow;
return uow;
}
private void PerformSyncUow(IInvocation invocation, UnitOfWorkOptions options)
{
using (var uow = _unitOfWorkManager.Begin(options))
{
invocation.Proceed();
uow.Complete();
}
}
private void PerformUow(IInvocation invocation, UnitOfWorkOptions options)
{
if (AsyncHelper.IsAsyncMethod(invocation.Method))
{
PerformAsyncUow(invocation, options);
}
else
{
PerformSyncUow(invocation, options);
}
}
/// <inheritdoc/>
public void Begin(UnitOfWorkOptions options)
{
if (options == null)
{
throw new ArgumentNullException("options");
}
PreventMultipleStart();
Options = options;
BeginUow();
}
/// <inheritdoc/>
public void Begin(UnitOfWorkOptions options)
{
if (options == null)
{
throw new ArgumentNullException("options");
}
PreventMultipleBegin();
Options = options; //TODO: Do not set options like that!
SetFilters(options.FilterOverrides);
BeginUow();
}
public IUnitOfWorkCompleteHandle Begin(UnitOfWorkOptions options)
{
if (_currentUnitOfWorkProvider.Current != null)
{
return new InnerUnitOfWorkCompleteHandle();
}
options.FillDefaultsForNonProvidedOptions(_defaultOptions);
var uow = _iocResolver.Resolve<IUnitOfWork>();
uow.Disposed += (sender, args) =>
{
_currentUnitOfWorkProvider.Current = null;
_iocResolver.Release(uow);
};
uow.Begin(options);
_currentUnitOfWorkProvider.Current = uow;
return uow;
}
public IUnitOfWorkCompleteHandle Begin(UnitOfWorkOptions options)
{
if (_currentUnitOfWorkProvider.Current != null)
{
return(new InnerUnitOfWorkCompleteHandle());
}
options.FillDefaultsForNonProvidedOptions(_defaultOptions);
var uow = _iocResolver.Resolve <IUnitOfWork>();
uow.Disposed += (sender, args) =>
{
_currentUnitOfWorkProvider.Current = null;
_iocResolver.Release(uow);
};
uow.Begin(options);
_currentUnitOfWorkProvider.Current = uow;
return(uow);
}
private void PerformAsyncUow(IInvocation invocation, UnitOfWorkOptions options)
{
var uow = _unitOfWorkManager.Begin(options);
invocation.Proceed();
if (invocation.Method.ReturnType == typeof(Task))
{
invocation.ReturnValue = InternalAsyncHelper.AwaitTaskWithPostActionAndFinally(
(Task)invocation.ReturnValue,
async () => await uow.CompleteAsync(),
exception => uow.Dispose()
);
}
else //Task<TResult>
{
invocation.ReturnValue = InternalAsyncHelper.CallAwaitTaskWithPostActionAndFinallyAndGetResult(
invocation.Method.ReturnType.GenericTypeArguments[0],
invocation.ReturnValue,
async () => await uow.CompleteAsync(),
(exception) => uow.Dispose()
);
}
}
private void PerformAsyncUow(IInvocation invocation, UnitOfWorkOptions options)
{
var uow = _unitOfWorkManager.Begin(options);
invocation.Proceed();
if (invocation.Method.ReturnType == typeof(Task))
{
invocation.ReturnValue = InternalAsyncHelper.AwaitTaskWithPostActionAndFinally(
(Task)invocation.ReturnValue,
async() => await uow.CompleteAsync(),
exception => uow.Dispose()
);
}
else //Task<TResult>
{
invocation.ReturnValue = InternalAsyncHelper.CallAwaitTaskWithPostActionAndFinallyAndGetResult(
invocation.Method.ReturnType.GenericTypeArguments[0],
invocation.ReturnValue,
async() => await uow.CompleteAsync(),
(exception) => uow.Dispose()
);
}
}
private void PerformAsyncUow(IInvocation invocation, UnitOfWorkOptions options)
{
var uow = _unitOfWorkManager.Begin(options);
invocation.Proceed();
if (invocation.Method.ReturnType == typeof(Task))
{
invocation.ReturnValue = InternalAsyncHelper.WaitTaskAndActionWithFinally(
(Task)invocation.ReturnValue,
async() => await uow.CompleteAsync(),
uow.Dispose
);
}
else //Task<TResult>
{
invocation.ReturnValue = InternalAsyncHelper.CallReturnGenericTaskAfterAction(
invocation.Method.ReturnType.GenericTypeArguments[0],
invocation.ReturnValue,
async() => await uow.CompleteAsync(),
uow.Dispose
);
}
}
private void PerformAsyncUow(IInvocation invocation, UnitOfWorkOptions options)
{
var uow = _unitOfWorkManager.Begin(options);
invocation.Proceed();
if (invocation.Method.ReturnType == typeof (Task))
{
invocation.ReturnValue = AsyncHelper.WaitTaskAndActionWithFinally(
(Task) invocation.ReturnValue,
async () => await uow.CompleteAsync(),
uow.Dispose
);
}
else
{
invocation.ReturnValue = AsyncHelper.CallReturnGenericTaskAfterAction(
invocation.Method.ReturnType.GenericTypeArguments[0],
invocation.ReturnValue,
async () => await uow.CompleteAsync(),
uow.Dispose
);
}
}
/// <inheritdoc/>
public void Begin(UnitOfWorkOptions options)
{
if (options == null)
{
throw new ArgumentNullException("options");
}
PreventMultipleBegin();
Options = options; //TODO: Do not set options like that, instead make a copy?
SetFilters(options.FilterOverrides);
SetTenantId(AbpSession.TenantId);
BeginUow();
}
/// <summary>
/// 开始工作单元.
/// </summary>
/// <inheritdoc/>
public void Begin(UnitOfWorkOptions options)
{
if (options == null)
{
throw new ArgumentNullException("options");
}
//防止Begin被多次调用
PreventMultipleBegin();
Options = options; //TODO: Do not set options like that, instead make a copy?
//过滤配置
SetFilters(options.FilterOverrides);
//抽象方法，子类实现
BeginUow();
}
