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Tip of the Day
Language: Enterprise
Expertise: Advanced
Oct 29, 1999

Mark an ASP Page with a Transaction Support Property

You can mark an ASP page with a transaction support property, just as you can do with a registered MTS component. An ASP scripting object thus can serve either as the root object or as a secondary object inside an MTS transaction. ASP also adds another built-in ASP object named ObjectContext. This object gives you the ability to call SetComplete or SetAbort directly from your VBScript code.

Such an ASP page also provides two events that you can use to handle the conditional logic when a transaction has been committed or rolled back. Transactional ASP pages are most valuable to Web programmers who want the benefits of MTS transactions without having to resort to using a compiled language. This is an example of transactional ASP page:

 
<%@ TRANSACTION=Required LANGUAGE="VBScript" %>
<% 
Sub Main()
    ' execute some code for update
    If (Every thing succeeds) Then
        ObjectContext.SetComplete
    Else
        ObjectContext.SetAbort
    End If
End Sub

' ASP supplies events for handling conditional commit/abort logic.
Sub OnTransactionCommit()
    Response.Write "transaction has succeeded"
End Sub
Sub OnTransactionAbort()
    Response.Write "transaction has failed. 
The error is : " & Err.Description End Sub %>
Jai Bardhan
 
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