protected virtual IEnumerable <T> ExecuteQuery <T>(Func <IDbStatement, IEnumerable <T> > query)
{
ThrowWhenDisposed();
TransactionScope scope = OpenQueryScope();
IDbConnection connection = null;
IDbTransaction transaction = null;
IDbStatement statement = null;
try
{
connection = _connectionFactory.Open();
transaction = _dialect.OpenTransaction(connection);
statement = _dialect.BuildStatement(scope, connection, transaction);
statement.PageSize = _pageSize;
Logger.LogTrace(Messages.ExecutingQuery);
return(query(statement));
}
catch (Exception e)
{
statement?.Dispose();
transaction?.Dispose();
connection?.Dispose();
scope?.Dispose();
Logger.LogDebug(Messages.StorageThrewException, e.GetType());
if (e is StorageUnavailableException)
{
throw;
}
throw new StorageException(e.Message, e);
}
}
protected virtual IAsyncEnumerable <T> ExecuteQuery2 <T>(Func <IDbStatement, Task <IAsyncEnumerable <T> > > query)
{
return(AsyncEnumerable.Create <T>(async producer =>
{
ThrowWhenDisposed();
TransactionScope scope = OpenQueryScope();
IDbAsyncConnection connection = null;
IDbTransaction transaction = null;
IDbStatement statement = null;
try
{
connection = await _connectionFactory.OpenAsync();
transaction = _dialect.OpenTransaction(connection);
statement = _dialect.BuildStatement(scope, connection, transaction);
statement.PageSize = _pageSize;
Logger.Verbose(Messages.ExecutingQuery);
await producer.Yield(await query(statement));
Logger.Verbose(Messages.ExecutingQuery);
}
catch (Exception e)
{
if (statement != null)
{
statement.Dispose();
}
if (transaction != null)
{
transaction.Dispose();
}
if (connection != null)
{
connection.Dispose();
}
if (scope != null)
{
scope.Dispose();
}
Logger.Debug(Messages.StorageThrewException, e.GetType());
if (e is StorageUnavailableException)
{
throw;
}
throw new StorageException(e.Message, e);
}
}));
}
protected virtual IEnumerable <T> ExecuteQuery <T>(string streamId, Func <IDbStatement, IEnumerable <T> > query)
{
ThrowWhenDisposed();
streamId = streamId.ToHash();
TransactionScope scope = OpenQueryScope();
IDbConnection connection = null;
IDbTransaction transaction = null;
IDbStatement statement = null;
try
{
connection = _connectionFactory.OpenReplica(streamId);
transaction = _dialect.OpenTransaction(connection);
statement = _dialect.BuildStatement(scope, connection, transaction);
statement.PageSize = _pageSize;
Logger.Verbose(Messages.ExecutingQuery);
return(query(statement));
}
catch (Exception e)
{
if (statement != null)
{
statement.Dispose();
}
if (transaction != null)
{
transaction.Dispose();
}
if (connection != null)
{
connection.Dispose();
}
if (scope != null)
{
scope.Dispose();
}
Logger.Debug(Messages.StorageThrewException, e.GetType());
if (e is StorageUnavailableException)
{
throw;
}
throw new StorageException(e.Message, e);
}
}
protected virtual T ExecuteQuery <T>(Guid streamId, Func <IDbStatement, T> query)
{
var scope = this.OpenQueryScope();
IDbConnection connection = null;
IDbTransaction transaction = null;
IDbStatement statement = null;
try
{
connection = this.ConnectionFactory.OpenSlave(streamId);
transaction = this.Dialect.OpenTransaction(connection);
statement = this.Dialect.BuildStatement(connection, transaction, scope);
return(query(statement));
}
catch (Exception e)
{
if (statement != null)
{
statement.Dispose();
}
if (transaction != null)
{
transaction.Dispose();
}
if (connection != null)
{
connection.Dispose();
}
scope.Dispose();
if (e is StorageUnavailableException)
{
throw;
}
throw new StorageException(e.Message, e);
}
}
public void Dispose()
{
_innerStatement.Dispose();
}
