Advanced usage

HasAndBelongsToMany with intermediate type

Accessing more than one database

Using Nullable Types

Nullable types and its handler classes

Advanced usage

HasAndBelongsToMany with intermediate type

TODO

Accessing more than one database

TODO: Describe how it works

Connection information is associated with a Type. Subclasses of the configured type inherit the active record configuration.

For Example:

<activerecord>

      <config>
        <add key="hibernate.connection.driver_class" value="NHibernate.Driver.SqlClientDriver" />
        <add key="hibernate.dialect"                 value="NHibernate.Dialect.MsSql2000Dialect" />
        <add key="hibernate.connection.provider"     value="NHibernate.Connection.DriverConnectionProvider" />
        <add key="hibernate.connection.connection_string" value="Data Source=.;Initial Catalog=test;Integrated Security=SSPI" />
      </config>

      <config type="Castle.ActiveRecord.Tests.Model.Test2ARBase, Castle.ActiveRecord.Tests">
        <add key="hibernate.connection.driver_class" value="NHibernate.Driver.SqlClientDriver" />
        <add key="hibernate.dialect"                 value="NHibernate.Dialect.MsSql2000Dialect" />
        <add key="hibernate.connection.provider"     value="NHibernate.Connection.DriverConnectionProvider" />
        <add key="hibernate.connection.connection_string" value="Data Source=.;Initial Catalog=test2;Integrated Security=SSPI" />
      </config>

  </activerecord>

Here are a few caveats that you might encounter when trying to get multiple databases working properly.

Your Test2ARBase class must be abstract:

[ActiveRecord]
      public abstract class Test2ARBase<T> : ActiveRecordBase<T>

If your are using ActiveRecordValidationBase<T>:

[ActiveRecord]
      public abstract class Test2ARValidationBase<T> : ActiveRecordValidationBase<T>  where T : class

You must include the base class in the list of models in the call to ActiveRecordStarter.Initialize():

ActiveRecordStarter.Initialize(config, typeof(Test2ARBase<>), typeof(...

And if you are using the generic base classes then specify your type with a `1:

<config type="Castle.ActiveRecord.Tests.Model.Test2ARBase`1, Castle.ActiveRecord.Tests">

Have a look at Multiple Database Test Case and Test2ARBase

Using Nullable Types

Include the following assembly references from the NHibernateContrib project:

Nullables.dll
Nullables.NHibernate.dll

ActiveRecord is able to check the property type and infer the nullable type handler. So, you may simply write:

[Property]
public NullableDateTime CreatedDate
{
	get { return _createdDate; }
	set { _createdDate = value; }
}

[Property]
public NullableInt32 Count
{
	get { return _count; }
	set { _count = value; }
}

The nullable types are the following:

Nullable types and its handler classes

CLR Basic Type	Nullable Type
System.Boolean	Nullables.NullableBoolean
System.Byte	Nullables.NullableByte
System.Char	Nullables.NullableChar
System.DateTime	Nullables.NullableDateTime
System.Decimal	Nullables.NullableDecimal
System.Double	Nullables.NullableDouble
System.Guid	Nullables.NullableGuid
System.Int16	Nullables.NullableInt16
System.Int32	Nullables.NullableInt32
System.Int64	Nullables.NullableInt64
System.SByte	Nullables.NullableSByte
System.Single	Nullables.NullableSingle

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Advanced usage

HasAndBelongsToMany with intermediate type

Accessing more than one database

Using Nullable Types

Nullable types and its handler classes