Inherit from SqlClientDriver and do this
public override IDbCommand GenerateCommand(CommandType type, SqlString
sqlString, SqlType[] parameterTypes)
{
IDbCommand command = base.GenerateCommand(type, sqlString, parameterTypes);
if (IsPrepareSqlEnabled)
{
SetParameterSizes(command.Parameters, parameterTypes);
}
return command;
}Then you will have a way to enable/disable the feature using the "prepare_sql" property of session-factory config. On Thu, Sep 23, 2010 at 12:15 PM, Maxim Filimonov <[email protected]>wrote: > Dear Fabio, > Thanks for the quick response. > I'll try your suggestion, thx. > > On 23 сен, 19:05, Fabio Maulo <[email protected]> wrote: > > No, it is not a bug istead it is a specific request to make happy > MsSqlServer. > > If you want the old behavior you have to copy&paste the SqlClientDrive > > and disable the actual behavior, the you have to specify your > > implementation in the sessio-factory configuration. > > > > -- > > Fabio Maulo > > > > El 23/09/2010, a las 11:10, Maxim Filimonov <[email protected]> > escribió: > > > > > > > > > > > > > > > > > Dear Everybody, > > > I've played with Nhibernate 3 Alpha 2 for a while and recently found a > > > bit confusing behaviour at least from standpoint of compatability with > > > version 2.1.2. > > > A problem occurs when I try to insert(didn't try to update but I > > > suppose it can have the same problem) string value to column with > > > limited length. > > > In 2.1.2 when such insert occurs my db engine(MSSQL SERVER 2008) > > > throws an exception "String or binary data would be truncated." which > > > gives me ability to rollback transaction at least if business layer > > > didn't check length of a field. With the version 3.0 Alpha 2 db engine > > > doesn't throw any exception on such insert because value is truncated > > > automagically by nhibernate. Generated SQL: > > > 2.1.2: > > > exec sp_executesql N'INSERT INTO Customers (FirstName) VALUES (@p0); > > > select SCOPE_IDENTITY()',N'@p0 nvarchar(16)',@p0=N'MoreThan3Symbols' > > > 3.0: > > > exec sp_executesql N'INSERT INTO Customers (FirstName) VALUES (@p0); > > > select SCOPE_IDENTITY()',N'@p0 nvarchar(3)',@p0=N'Mor' > > > > > My mapping: > > > <class name="TruncateBug.Customer,TruncateBug" table="Customers"> > > > <id name="CustomerId" column="CustomerId"> > > > <generator class="native"/> > > > </id> > > > <property name="FirstName" column="FirstName" length="3"/> > > > </class> > > > And the code that doesn't produce exception anymore: > > > var invalidCustomer = new Customer() { FirstName = > > > "MoreThan3Symbols" }; > > > int id = (int)session.Save(invalidCustomer); > > > > > And yes session will contain Customer object with full length > > > FirstName which could lead to a lot of misunderstanding in further > > > usage of the Customer object in scope of this session. > > > > > Maybe it's not a bug but a feature but then I hope there is a way to > > > configure nhiberate to throw exception as previously and to not try to > > > create magic for me. > > > > > Thanks in advance, > > > Yours sincerely, > > > Maxim Filimonov > > > > > -- > > > You received this message because you are subscribed to the Google > Groups "nhusers" group. > > > To post to this group, send email to [email protected]. > > > To unsubscribe from this group, send email to > [email protected]<nhusers%[email protected]> > . > > > For more options, visit this group athttp:// > groups.google.com/group/nhusers?hl=en. > > -- > You received this message because you are subscribed to the Google Groups > "nhusers" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]<nhusers%[email protected]> > . > For more options, visit this group at > http://groups.google.com/group/nhusers?hl=en. > > -- Fabio Maulo -- You received this message because you are subscribed to the Google Groups "nhusers" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/nhusers?hl=en.
