private SqlExpression ExtractParameter(SqlExpression expr)
{
var clrType = expr.ClrType;
if (expr.ClrType.IsValueType && !TypeSystem.IsNullableType(expr.ClrType))
{
clrType = typeof(Nullable <>).MakeGenericType(new[] { expr.ClrType });
}
externals.Add(expr);
var pName = sqlIdentity.ParameterPrefix + "x" + (parameters.Count + 1);
var item = new SqlParameter(clrType, expr.SqlType, pName, expr.SourceExpression);
parameters.Add(item);
return(item);
}
private static bool IsNullableValue(SqlMember m)
{
return(TypeSystem.IsNullableType(m.Expression.ClrType) && (m.Member.Name == "Value"));
}
