protected Task(AstTaskNode astNode)
: base(astNode)
{
DelayValidation = astNode.DelayValidation;
switch (astNode.IsolationLevel)
{
case IsolationLevel.Chaos:
TaskIsolationLevel = System.Data.IsolationLevel.Chaos;
break;
case IsolationLevel.ReadCommitted:
TaskIsolationLevel = System.Data.IsolationLevel.ReadCommitted;
break;
case IsolationLevel.ReadUncommitted:
TaskIsolationLevel = System.Data.IsolationLevel.ReadUncommitted;
break;
case IsolationLevel.RepeatableRead:
TaskIsolationLevel = System.Data.IsolationLevel.RepeatableRead;
break;
case IsolationLevel.Serializable:
TaskIsolationLevel = System.Data.IsolationLevel.Serializable;
break;
case IsolationLevel.Snapshot:
TaskIsolationLevel = System.Data.IsolationLevel.Snapshot;
break;
case IsolationLevel.Unspecified:
TaskIsolationLevel = System.Data.IsolationLevel.Unspecified;
break;
default:
TaskIsolationLevel = System.Data.IsolationLevel.Serializable;
break;
}
}
/// <summary>
/// Initializes a new instance of the <see cref="EffortTransaction" /> class.
/// </summary>
/// <param name="connection">
/// The <see cref="EffortTransaction" /> object.
/// </param>
/// <param name="isolationLevel">
/// The isolation level.
/// </param>
/// <exception cref="System.InvalidOperationException">
/// Ambient transaction is already set.
/// </exception>
public EffortTransaction(
EffortConnection connection,
System.Data.IsolationLevel isolationLevel)
{
if (System.Transactions.Transaction.Current != null)
{
throw new InvalidOperationException("Ambient transaction is already set.");
}
this.connection = connection;
this.isolationLevel = isolationLevel;
// Initialize new ambient transaction
System.Transactions.TransactionOptions options =
new System.Transactions.TransactionOptions();
options.IsolationLevel = TranslateIsolationLevel(isolationLevel);
options.Timeout = new TimeSpan(0, 0, connection.ConnectionTimeout);
this.systemTransaction = new System.Transactions.CommittableTransaction(options);
this.transaction = NMemory.Transactions.Transaction.Create(this.systemTransaction);
}
/// <summary>
/// If self is null, will create a new data access adapter
/// </summary>
/// <param name="self"></param>
/// <param name="level"></param>
/// <param name="transactionName"></param>
/// <returns></returns>
public static DataAccessAdapter CreateTransaction(this DataAccessAdapter self, System.Data.IsolationLevel level, string transactionName)
{
if (self == null)
{
self = Create();
}
self.StartTransaction(level, transactionName);
return(self);
}
override public DbTransaction BeginTransaction(System.Data.IsolationLevel iso)
{
return(BeginSqlTransaction(iso, null, false));
}
protected override DbTransaction BeginDbTransaction(System.Data.IsolationLevel isolationLevel)
{
throw new NotSupportedException();
}
/// <param name="isolationLevel">The isolation level.</param>
public TransactionAttribute(IsolationLevel isolationLevel)
{
_isolationLevel = isolationLevel;
}
protected abstract DbTransaction BeginDbTransaction(IsolationLevel isolationLevel);
/// <summary>
/// Creates a new <see cref="UnitOfWorkAttribute" /> object.
/// <see cref="IsTransactional" /> is automatically set to true.
/// </summary>
/// <param name="isolationLevel">Transaction isolation level</param>
public UnitOfWorkAttribute(IsolationLevel isolationLevel)
{
IsTransactional = true;
IsolationLevel = isolationLevel;
}
protected override System.Data.Common.DbTransaction BeginDbTransaction(System.Data.IsolationLevel isolationLevel)
{
throw null;
}
private static System.Transactions.IsolationLevel MapIsolationLevel(IsolationLevel isolationLevel)
{
switch (isolationLevel)
{
case IsolationLevel.Unspecified:
return System.Transactions.IsolationLevel.Unspecified;
case IsolationLevel.Chaos:
return System.Transactions.IsolationLevel.Chaos;
case IsolationLevel.ReadUncommitted:
return System.Transactions.IsolationLevel.ReadUncommitted;
case IsolationLevel.ReadCommitted:
return System.Transactions.IsolationLevel.ReadCommitted;
case IsolationLevel.RepeatableRead:
return System.Transactions.IsolationLevel.RepeatableRead;
case IsolationLevel.Serializable:
return System.Transactions.IsolationLevel.Serializable;
case IsolationLevel.Snapshot:
return System.Transactions.IsolationLevel.Snapshot;
default:
throw new ArgumentOutOfRangeException(nameof(isolationLevel), isolationLevel, null);
}
}
/// <summary>
/// Begins the transaction.
/// </summary>
/// <param name="isolationLevel">Transaction isolation level, see <see cref="System.Data.IsolationLevel" /> for details. </param>
/// <remarks>
/// TransactionManager will single TransactionScope, subsequent call to <see cref="BeginTransaction"/> will return same scope
/// until <see cref="CommitTransaction"/> or <see cref="RollbackTransaction"/> is called.
/// </remarks>
/// <returns>The transaction instance.</returns>
public IDisposable BeginTransaction(IsolationLevel isolationLevel = IsolationLevel.ReadCommitted)
{
return this.transaction ??
(this.transaction = new TransactionScope(TransactionScopeOption.Required,
new TransactionOptions {IsolationLevel = MapIsolationLevel(isolationLevel)}));
}
/// <summary>
///
/// </summary>
/// <param name="name"></param>
/// <param name="level"></param>
public virtual void BeginTransaction(string name, IsolationLevel? level)
{
if (name == null || name.Trim().Equals(string.Empty))
throw new BusinessLayerException("The transaction name cannot be null or empty", "BeginTransaction");
if (this.Exists(name))
throw new BusinessLayerException(string.Format("The transaction name ({0}) to add is used by another one..", name), "BeginTransaction");
int index = transactions.Count;
if (this.transactions.Count == 0)
{
//if (!sessionProvider.HasSessionBinded)
// throw new BusinessLayerException("Error on beginning a new transaction because of missing binded document session.", "BeginTransaction");
this.transactionScope = new TransactionScope();
}
this.transactions.Push(new TransactionInfo(name, index));
}
/// <summary>
///
/// </summary>
/// <param name="level"></param>
public virtual void BeginTransaction(IsolationLevel? level)
{
int index = transactions.Count;
this.BeginTransaction(string.Format("{0}_{1}", DefaultNaming, index));
}
/// <summary>
/// Begins a database transaction
/// </summary>
/// <param name="isolationLevel">The isolation level of the transaction</param>
/// <returns>An object representing the new transaction</returns>
protected override DbTransaction BeginDbTransaction(IsolationLevel isolationLevel)
{
if (CurrentTransaction != null)
{
throw new InvalidOperationException(Strings.EntityClient_TransactionAlreadyStarted);
}
if (_storeConnection == null)
{
throw new InvalidOperationException(Strings.EntityClient_ConnectionStringNeededBeforeOperation);
}
if (State != ConnectionState.Open)
{
throw new InvalidOperationException(Strings.EntityClient_ConnectionNotOpen);
}
DbTransaction storeTransaction = null;
try
{
storeTransaction = _storeConnection.BeginTransaction(isolationLevel);
}
catch (Exception e)
{
if (e.IsCatchableExceptionType())
{
throw new EntityException(Strings.EntityClient_ErrorInBeginningTransaction, e);
}
throw;
}
// The provider is problematic if it succeeded in beginning a transaction but returned a null
// for the transaction object
if (storeTransaction == null)
{
throw new ProviderIncompatibleException(
Strings.EntityClient_ReturnedNullOnProviderMethod("BeginTransaction", _storeConnection.GetType().Name));
}
_currentTransaction = new EntityTransaction(this, storeTransaction);
return _currentTransaction;
}
protected abstract DbTransaction BeginDbTransaction(IsolationLevel isolationLevel);
public NHibernateSagaRepository(ISessionFactory sessionFactory)
{
_sessionFactory = sessionFactory;
_insertIsolationLevel = System.Data.IsolationLevel.ReadCommitted;
}
protected abstract System.Data.Common.DbTransaction BeginDbTransaction(System.Data.IsolationLevel isolationLevel);
/// <summary> /// Starts a transaction. The resulting transaction handle can be used to chain operations together. /// </summary> /// <param name="isolationLevel">Isolation level of the operations executed in the transaction.</param> /// <returns></returns> public abstract ITransaction BeginTransaction(System.Data.IsolationLevel isolationLevel);
public System.Data.Common.DbTransaction BeginTransaction(System.Data.IsolationLevel isolationLevel)
{
return(default(System.Data.Common.DbTransaction));
}
public static HsqlIsolationLevel ToHsqlIsolationLevel(IsolationLevel isolationLevel)
{
switch (isolationLevel)
{
case IsolationLevel.ReadCommitted:
case IsolationLevel.Unspecified:
{
return HsqlIsolationLevel.ReadCommited;
}
case IsolationLevel.ReadUncommitted:
{
return HsqlIsolationLevel.ReadUncommited;
}
case IsolationLevel.RepeatableRead:
{
return HsqlIsolationLevel.RepeatableRead;
}
case IsolationLevel.Serializable:
{
return HsqlIsolationLevel.Serializable;
}
case IsolationLevel.Chaos:
case IsolationLevel.Snapshot:
default:
{
throw new ArgumentException(string.Format(
"Unsupported Level: {0}",
isolationLevel),
"isolationLevel");
}
}
}
public IDocumentSession DirtyTrackedSession(string tenantId, IsolationLevel isolationLevel = IsolationLevel.ReadCommitted)
{
return(OpenSession(tenantId, DocumentTracking.DirtyTracking, isolationLevel));
}
/// <summary>Begins a transaction with the specified isolation level by using the underlying provider. </summary>
/// <returns>
/// A new <see cref="T:System.Data.Entity.Core.EntityClient.EntityTransaction" />. The returned
/// <see
/// cref="T:System.Data.Entity.Core.EntityClient.EntityTransaction" />
/// instance can later be associated with the
/// <see
/// cref="T:System.Data.Entity.Core.EntityClient.EntityCommand" />
/// to execute the command under that transaction.
/// </returns>
/// <param name="isolationLevel">The isolation level of the transaction.</param>
/// <exception cref="T:System.InvalidOperationException">
/// The underlying provider is not known.-or-The call to
/// <see
/// cref="M:System.Data.Entity.Core.EntityClient.EntityConnection.BeginTransaction" />
/// was made on an
/// <see
/// cref="T:System.Data.Entity.Core.EntityClient.EntityConnection" />
/// that already has a current transaction.-or-The state of the
/// <see
/// cref="T:System.Data.Entity.Core.EntityClient.EntityConnection" />
/// is not
/// <see
/// cref="F:System.Data.ConnectionState.Open" />
/// .
/// </exception>
public new virtual EntityTransaction BeginTransaction(IsolationLevel isolationLevel)
{
return base.BeginTransaction(isolationLevel) as EntityTransaction;
}
public IDocumentSession LightweightSession(string tenantId, IsolationLevel isolationLevel = IsolationLevel.ReadCommitted)
{
return(OpenSession(tenantId, DocumentTracking.None, isolationLevel));
}
/// <summary>
/// 开启事物
/// </summary>
/// <returns></returns>
public async Task BeginTransactionAsync(System.Data.IsolationLevel isolationLevel)
{
await BaseDB.BaseDataContext.Database.BeginTransactionAsync(isolationLevel);
}
public System.Data.IDbTransaction BeginTransaction(System.Data.IsolationLevel il)
{
}
public TransactionScopeAdapter(System.Data.IsolationLevel level = System.Data.IsolationLevel.Serializable)
{
tran = new TransactionScope();
}
public TransactionForK3Attribute(System.Data.IsolationLevel isolationLevel = System.Data.IsolationLevel.ReadCommitted)
{
_isolationLevel = isolationLevel;
}
abstract internal void ExecuteTransaction(TransactionRequest transactionRequest, string name, System.Data.IsolationLevel iso, SqlInternalTransaction internalTransaction, bool isDelegateControlRequest);
public IBM.Data.DB2.DB2Transaction BeginTransaction(System.Data.IsolationLevel isolationL)
{
throw null;
}
IDbTransaction IDbConnection.BeginTransaction(IsolationLevel il)
{
return(this.BeginTransaction(il));
}
System.Data.IDbTransaction System.Data.IDbConnection.BeginTransaction(System.Data.IsolationLevel isolationL)
{
throw null;
}
public DbTransaction BeginTransaction(IsolationLevel isolationLevel)
{
return(this.BeginDbTransaction(isolationLevel));
}
///////////////////////////////////////////////////////////////////////////
#region Private Methods
private System.Data.IsolationLevel GetSystemDataIsolationLevel(
SQLiteConnection connection,
Transaction transaction,
System.Data.IsolationLevel defaultIsolationLevel,
bool throwOnUnavailable,
bool throwOnUnsupported
)
{
if (transaction == null)
{
//
// NOTE: If neither the transaction nor connection isolation
// level is available, throw an exception if instructed
// by the caller.
//
if (connection != null)
{
return(connection.GetDefaultIsolationLevel());
}
if (throwOnUnavailable)
{
throw new InvalidOperationException(
"isolation level is unavailable");
}
return(defaultIsolationLevel);
}
System.Transactions.IsolationLevel isolationLevel =
transaction.IsolationLevel;
//
// TODO: Are these isolation level mappings actually correct?
//
switch (isolationLevel)
{
case IsolationLevel.Unspecified:
return(System.Data.IsolationLevel.Unspecified);
case IsolationLevel.Chaos:
return(System.Data.IsolationLevel.Chaos);
case IsolationLevel.ReadUncommitted:
return(System.Data.IsolationLevel.ReadUncommitted);
case IsolationLevel.ReadCommitted:
return(System.Data.IsolationLevel.ReadCommitted);
case IsolationLevel.RepeatableRead:
return(System.Data.IsolationLevel.RepeatableRead);
case IsolationLevel.Serializable:
return(System.Data.IsolationLevel.Serializable);
case IsolationLevel.Snapshot:
return(System.Data.IsolationLevel.Snapshot);
}
//
// NOTE: When in "strict" mode, throw an exception if the isolation
// level is not recognized; otherwise, fallback to the default
// isolation level specified by the caller.
//
if (throwOnUnsupported)
{
throw new InvalidOperationException(
String.Format(CultureInfo.InvariantCulture,
"unsupported isolation level {0}", isolationLevel));
}
return(defaultIsolationLevel);
}
public NHibernateSagaRepository(ISessionFactory sessionFactory, System.Data.IsolationLevel isolationLevel)
{
_sessionFactory = sessionFactory;
_insertIsolationLevel = isolationLevel;
}
public ITransaction BeginTransaction(System.Data.IsolationLevel isolationLevel)
{
return(_actualImplementation.BeginTransaction(isolationLevel));
}
public new System.Data.Odbc.OdbcTransaction BeginTransaction(System.Data.IsolationLevel isolevel)
{
throw null;
}
public EntityFrameworkUnitOfWork(DbContext dbContext, IsolationLevel isolationLevel)
{
_dbContext = dbContext;
_transaction = dbContext.Database.BeginTransaction(isolationLevel);
}
public DataMappingTransaction(IDataAccessFactory accessFactory, System.Data.IsolationLevel isolationLevel)
{
this._accessFactory = accessFactory;
this._accessFactory.BeginTransaction(isolationLevel);
}
public DbContextTransaction BeginTrans(System.Data.IsolationLevel isolationLevel = System.Data.IsolationLevel.ReadCommitted)
{
return(base.Database.BeginTransaction(isolationLevel));
}
/// <summary>
/// Creates a new <see cref="UnitOfWorkAttribute" /> object.
/// <see cref="IsTransactional" /> is automatically set to true.
/// </summary>
/// <param name="isolationLevel">Transaction isolation level</param>
/// <param name="timeout">Transaction timeout as milliseconds</param>
public UnitOfWorkAttribute(IsolationLevel isolationLevel, int timeout)
{
IsTransactional = true;
IsolationLevel = isolationLevel;
Timeout = TimeSpan.FromMilliseconds(timeout);
}
public void Begin(System.Data.IsolationLevel isolatedLevel)
{
//throw new NotImplementedException();
}
IDbTransaction IDbConnection.BeginTransaction(IsolationLevel il)
{
return this.BeginTransaction(il);
}
public DbContextTransaction BeginTransaction(System.Data.IsolationLevel isolation) => Database.BeginTransaction(isolation);
public DbTransaction BeginTransaction(IsolationLevel isolationLevel)
{
return this.BeginDbTransaction(isolationLevel);
}
/// <summary>
/// 开启事物
/// </summary>
/// <returns></returns>
public void BeginTransaction(System.Data.IsolationLevel isolationLevel)
{
BaseDB.BaseDataContext.Database.BeginTransaction();
}
/// <summary>
/// Begins a database transaction
/// </summary>
/// <param name="isolationLevel"> The isolation level of the transaction </param>
/// <returns> An object representing the new transaction </returns>
protected override DbTransaction BeginDbTransaction(IsolationLevel isolationLevel)
{
if (_fakeConnectionState != null)
{
return new EntityTransaction();
}
if (CurrentTransaction != null)
{
throw new InvalidOperationException(Strings.EntityClient_TransactionAlreadyStarted);
}
if (_storeConnection == null)
{
throw Error.EntityClient_ConnectionStringNeededBeforeOperation();
}
if (State != ConnectionState.Open)
{
throw Error.EntityClient_ConnectionNotOpen();
}
var interceptionContext = new BeginTransactionInterceptionContext(InterceptionContext);
if (isolationLevel != IsolationLevel.Unspecified)
{
interceptionContext = interceptionContext.WithIsolationLevel(isolationLevel);
}
DbTransaction storeTransaction = null;
try
{
var executionStrategy = DbProviderServices.GetExecutionStrategy(_storeConnection, GetMetadataWorkspace());
storeTransaction = executionStrategy.Execute(
() =>
{
if (DbInterception.Dispatch.Connection.GetState(_storeConnection, InterceptionContext) == ConnectionState.Broken)
{
DbInterception.Dispatch.Connection.Close(_storeConnection, interceptionContext);
}
if (DbInterception.Dispatch.Connection.GetState(_storeConnection, InterceptionContext) == ConnectionState.Closed)
{
DbInterception.Dispatch.Connection.Open(_storeConnection, interceptionContext);
}
return DbInterception.Dispatch.Connection.BeginTransaction(
_storeConnection,
interceptionContext);
});
}
catch (Exception e)
{
if (e.IsCatchableExceptionType())
{
throw new EntityException(Strings.EntityClient_ErrorInBeginningTransaction, e);
}
throw;
}
// The provider is problematic if it succeeded in beginning a transaction but returned a null
// for the transaction object
if (storeTransaction == null)
{
throw new ProviderIncompatibleException(
Strings.EntityClient_ReturnedNullOnProviderMethod("BeginTransaction", _storeConnection.GetType().Name));
}
_currentTransaction = new EntityTransaction(this, storeTransaction);
return _currentTransaction;
}
/// <param name="transactionPropagation">The transaction propagation.</param>
/// <param name="isolationLevel">The isolation level.</param>
public TransactionAttribute(TransactionPropagation transactionPropagation,
IsolationLevel isolationLevel) : this(transactionPropagation)
{
_isolationLevel = isolationLevel;
}
