Override FluentNHibernate Auto mapping

Question

I need change for the next class data type assumed by default FluentNHibernate Automapping

public class plaparte
{
public virtual int id { get; private set; }
public virtual int vivos { get; set; }
public virtual int lesionados { get; set; }
public virtual int quemados { get; set; }
public virtual int muertos { get; set; }
public virtual int otros { get; set; }
public virtual string colaboracion { get; set; }
public virtual decimal hectareas { get; set; }
public virtual string reconocimiento { get; set; }
public virtual string disposiciones { get; set; }
public virtual plaserv plaserv { get; set; }
}
}

I need for this class only the string type to be converted into TEXT in database If I change by

public virtual string[] reconocimiento { get; set; }

FluentNHibernate takes a BLOB data type

I can do something like?

public class plaparteMappingOverride : IAutoMappingOverride<plaparte>
{
public void Override(AutoMapping<plaparte> mapping)
{
  Map(x => x.disposiciones).CustomSqlTypeIs("TEXT");
}
}

Answer 1

To solve the problem I am using:

using System.ComponentModel.DataAnnotations;
...
public class plaparte
{
...
[StringLength(4000)]
public virtual string disposiciones { get; set; }

To create TEXT fields

[Update]

For work I need to create the next class

class StringLengthConvention : AttributePropertyConvention<StringLengthAttribute>
{
    protected override void Apply(StringLengthAttribute attribute, IPropertyInstance instance)
    {
        instance.Length(attribute.MaximumLength);
    }
}

is also necessary to add the convention Fluent automap Like

    static AutoPersistenceModel CreateAutomappings()
    {
        return AutoMap.AssemblyOf<plaparte>(new mapAutomapConfiguration())
            .Conventions.Setup(c =>
            {
                c.Add<StringLengthConvention>();
            });
    }