摘自： http://forum.castleproject.org/viewtopic.php?t=52

Hi, I got somewhat the same problem. I need to run T-SQL commands, as we are new to ActiveRecord and NHibernate, and would like a quick "workaround" when we can't find our ways

I refered to http://castleproject.org/index.php/ActiveRecord:Using_HQL and made a derived class from ActiveRecordBaseQuery.

Code:

Public Class SqlNonQuery ? ? Inherits ActiveRecordBaseQuery ? ? Private _commandText As String ? ? Public Property CommandText() As String ? ? ? ? Get ? ? ? ? ? ? Return _commandText ? ? ? ? End Get ? ? ? ? Set(ByVal Value As String) ? ? ? ? ? ? _commandText = Value ? ? ? ? End Set ? ? End Property ? ? Public Sub New(ByVal commandText As String) ? ? ? ? MyBase.New(GetType(User)) ? ? ? ? _commandText = commandText ? ? End Sub ? ? Public Overrides Function Execute(ByVal session As NHibernate.ISession) As Object ? ? ? ? Dim cmd As IDbCommand = session.Connection.CreateCommand() ? ? ? ? cmd.CommandText = CommandText ? ? ? ? cmd.ExecuteNonQuery() ? ? ? ? Return Nothing ? ? End Function End Class ''' usage ''' Dim q As SqlNonQuery("ANY SQL STATEMENT") ExecuteQuery(q)

But still have the same problem as Nick, need to pass some arbitrary ActiveRecord class type for the ActiveRecordBaseQuery constructor.

If you have better ways, please advice.. Thanks.

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Ok, I figured out something that works:

Code:

ISessionFactoryHolder holder = ActiveRecordMediator.GetSessionFactoryHolder(); ISession session = holder.CreateSession(typeof(User)); IDbCommand cmd = session.Connection.CreateCommand(); cmd.CommandText = "ALTER TABLE stops ALTER description TYPE text;"; cmd.ExecuteNonQuery(); ? ?? ?? ?? ? holder.ReleaseSession(session);

However it's a lot of code, and two things that bug me are:

1) Must give CreateSession some arbitrary ActiveRecord class type (type "User" in the example)
2) GetSessionFactoryHolder() seems to be a "temporary" method, not intended to be used

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This disscuss is old though, I post the idea to solve above problem. It maybe help someone who has same problem.

Code:

// Create query SimpleQuery<object[]> query = new SimpleQuery<object[]>( ? ? ? ? ? ? ? ? typeof(TopCalled), ? ? ? ? ? ? ? ? @"select RecID, count(Called_Number) as frequency, Called_Number ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?from detail_record ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?group by Called_Number ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?order by frequency desc"); // Execute query object[][] results = query.Execute();

It also might work that you use TopCalled class instead of "object[]" if the class has "operator=(object[])".

轉(zhuǎn)載于:https://www.cnblogs.com/shiningrise/archive/2007/09/09/887355.html

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