Binary Blob truncated to 8000 bytes - SQL Server 2008 / varbinary(max)

Question

I have upgraded from Fluent Nhibernate 1.0 with Nhibernate 2.1 to pre- release 1.x with NHibernate 3.0 GA and have hit what I think is a regression, but I want to hear if th

Answer 1

In 3.0.0GA, the following mapping seems to do the trick:

        <property name="Data" type="Serializable" length="2147483647" />

Answer 2

Have you tried this?

Map(x => x.Image).CustomSqlType("VARBINARY(MAX)");

Answer 3

Map(x => x.Image).Length(100000).Not.Nullable();

Add the 'Length(MAXVALUE)' as above and it will work :)

Answer 4

This is a regression. I have raised a bug and provided patches at https://nhibernate.jira.com/browse/NH-2484

Answer 5

I too have encountered a similar problem and after much experimentation I noticed that when using Nhibernate to generate my schema to a file the generated column type was always length 8000.

Setting setting CustomSqlType to Varbinary(max) as suggested above made no difference, however, this work around in my FluentMapping seemed to do the trick:

Map(x => x.LogoBytes).CustomType("BinaryBlob").Length(1048576).Nullable();  

The length of course is an arbitrary amount but I think it should be set to something less than int.Max. I am new to Nhibernate so I'm still figuring things out but I'd be interested to know if this helps you.