Nhibernate setting query time out period for commands and pessimistic locking

Posted by Nagesh on Stack Overflow See other posts from Stack Overflow or by Nagesh
Published on 2011-11-12T04:54:16Z Indexed on 2011/11/12 9:51 UTC
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I wish to specify a specific command timeout (or LOCK_TIMEOUT) for an SQL and once this time out is reached an exception (or alert) has to be raised in nHibernate.
The following is an example pseudo-code what I have written:

using (var session = sessionFactory.OpenSession()) {
    using (var sqlTrans = session.BeginTransaction()) {
        ICriteria criteria = session.CreateCriteria(typeof(Foo));
        criteria.SetTimeout(5); //Here is the specified command timout, eg: property SqlCommand.CommandTimeout
        Foo fooObject = session.Load<Foo>(primaryKeyIntegerValue, LockMode.Force);
        session.SaveOrUpdate(fooObject);
        sqlTrans.Commit();
    }
}  

In SQL server we used to achieve this using the following SQL:

BEGIN TRAN
SET LOCK_TIMEOUT 500   
SELECT * FROM Foo WITH (UPDLOCK, ROWLOCK) WHERE PrimaryKeyID = 1000001

If PrimaryKeyID row would have locked in other transaction the following error message is being shown by SQL Server:

Msg 1222, Level 16, State 51, Line 3
Lock request time out period exceeded

Similarly I wish to show a lock time out or command time out information using nHibernate. Please help me to achieve this.
Thanks in advance for your help.

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