I am trying use a guid as a generated id with postgres and I get this error
"Can't cast Guid into any valid DbType" also I am using mono.


<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2">
<class name="Test, test" table="arraytable">
<id name="Key" type="Guid">
<column name="id" />
<generator class="guid" />
</id>
<property name="PropertyName" />
<primitive-array name="Array" table="intergrals">
<key column="id" />
<index column="index" />
<element column="value" type="Int32" />
</primitive-array>
</class>
</hibernate-mapping>

Are guids not supported with Postgres ? If so how do I add it ? It can't be hard they just need to be mapped to varchar's

not a hibernate problem. the postgres driver I am using(npgsl) doesn't support Guids.

Adding this to NpgslTypesHelper.cs adds support for Guids
NativeTypeMapping.AddDbTypeAlias("varchar",DbType.Guid);
NativeTypeMapping.AddTypeAlias("varchar",typeof(Guid));