iBatis doesn't work with doubles?

[Martin Wickman]

Hello

I get "System.InvalidCastException: Specified cast is not valid" and the 
following stacktrace:

at System.Data.SqlClient.SqlBuffer.get_Double()
at System.Data.SqlClient.SqlDataReader.GetDouble(Int32 i)
at 
IBatisNet.DataMapper.Commands.DataReaderDecorator.System.Data.IDataRecord.GetDouble(Int32
 i)
at 
IBatisNet.DataMapper.TypeHandlers.DoubleTypeHandler.GetValueByIndex(ResultProperty
 mapping, IDataReader dataReader)
at 
IBatisNet.DataMapper.Configuration.ResultMapping.ResultProperty.GetDataBaseValue(IDataReader
 dataReader)
at 
IBatisNet.DataMapper.MappedStatements.ResultStrategy.AutoMapStrategy.Process(RequestScope
 request, IDataReader& reader, Object resultObject)
at 
IBatisNet.DataMapper.MappedStatements.ResultStrategy.ResultClassStrategy.Process(RequestScope
 request, IDataReader& reader, Object resultObject)
at 
IBatisNet.DataMapper.MappedStatements.MappedStatement.RunQueryForList[T](RequestScope
 request, ISqlMapSession session, Object parameterObject, IList`1 resultObject, 
RowDelegate`1 rowDelegate)
at 
IBatisNet.DataMapper.MappedStatements.MappedStatement.ExecuteQueryForList[T](ISqlMapSession
 session, Object parameterObject)
at IBatisNet.DataMapper.SqlMapper.QueryForList[T](String statementName, Object 
parameterObject)
at Dapresy.RefDB.ServiceLibrary.DB.FooHelper.select() in 
C:\...\DB\FooHelper.cs:line 11
at UnitTests.AttributesTest.foo() in C:\...\UnitTests\AttributesTest.cs:line 79

This is a simple as I could make the test case:

Foo.xml (the sqlMap):

<?xml version="1.0" encoding="UTF-8" ?>
<sqlMap
    namespace="Foo"
    xmlns="http://ibatis.apache.org/mapping";
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
    xsi:noNamespaceSchemaLocation="../iBatis/SqlMap.xsd">

    <statements>
        <select id="getFoo" resultClass="Foo">
            SELECT 1.2345 as d                
        </select>
    </statements>
</sqlMap>

Foo.cs (the test class):

    public class Foo
    {
        public double d = 0.0;
    }

mapper().QueryForList<Foo>("getFoo", null);

As you see, this is an extremely simple example and it should of course work. 
If I change the 'd' property to and int or string or whatever, it works. This 
is the first time I used doubles with iBats. But using 'float' or 'double' 
gives this error!

Using iBatis .NET 1.6.[12] and SQL Server2.0.

/Martin