nhibernate varbinary(max) byte array mapping

Question

I looked through all the answers here and elsewhere on the web, but nothing seems to work. I have a table (sql server 2014) with a varbinary(max) datatype, named "Image" I'm using NHibernate version 3.3.1.4000, which has some fixes regarding varbinary issues.

this is my current hibernate mapping:

   <property name="Image" type="BinaryBlob">
      <column name="Image" sql-type="varbinary(2147483647)" length="2147483647"/>                                             
   </property>

I also tried following variations:

<property name="Image" type="BinaryBlob"/>

<property name="Image"  length="2147483647"/>

this is my (c# class) property:

   public virtual byte[] Image { get; set; }

I'm getting the familiar error:

 ---> System.Data.SqlClient.SqlException: String or binary data would be truncated.

I have a feeling the answer is staring me right in the face, but I just can't see it. Any help will be greatly appreciated.

Answer 1

You've got be be doing that somewhere in either code or a config somewhere. I'm using NHibernate 3.3 with the map by code and it's mapping to VARBINARY(MAX) without an issue.

Here's my property definition:

Property(x => x.Photo, map =>
{
    map.Type(NHibernateUtil.BinaryBlob);
    map.Length(Int32.MaxValue);
});

Here's my SessionFactory configuration:

Configure.DataBaseIntegration(db =>
          {
            db.Dialect<MsSql2008Dialect>();
            db.Driver<SqlClientDriver>();
            db.KeywordsAutoImport = Hbm2DDLKeyWords.AutoQuote;
            db.IsolationLevel = IsolationLevel.ReadCommitted;
            db.ConnectionStringName = System.Environment.MachineName;
            db.BatchSize = 20;
            db.Timeout = 10;
            db.HqlToSqlSubstitutions = "true 1, false 0, yes 'Y', no 'N'";
          });

Note that I'm specifying a Driver and Dialect. VARBINARY(MAX) was not supported before the MsSql2005Dialect.