"Greater than" where-condition on timeuuid using Datastax C# Cassandra Driver

Question

How do I make "greater than" or "less than" where-conditions in CQL queries on the timeuuid data type using the Datastax C# driver?

I have a table in Cassandra for storing cookie history sorted by time stamp as timeuuid:

CREATE TABLE cookie_history (
    cookie_id text,
    create_date timeuuid,
    item_id text,
    PRIMARY KEY ((cookie_id), create_date)
);

The table is mapped using a C# class for querying using the Datastax C# Cassandra driver:

[Table("cookie_history")]
public class CookieHistoryDataEntry
{
    [PartitionKey(1)]
    [Column("cookie_id")]
    public string CookieID;

    [ClusteringKey(1)]
    [Column("create_date")]
    public Guid CreateDate;

    [Column("item_id")]
    public string ItemID;
}

For a given cookie I want all items after a given time stamp.

        var myTimeUuid = new Guid("5812e74d-ba49-11e3-8d27-27303e6a4831");
        var table = session.GetTable<CookieHistoryDataEntry>();
        var query = table.Where(x => x.CookieID == myCookieId
                                  && x.CreateDate > myTimeUuid);

But this (x.CreateDate > myTimeUuid) gives me a compile time error:

Operator '>' cannot be applied to operands of type 'System.Guid' and 'System.Guid'

Answer 1

It is possible to use "greater than" on timeuuid in raw CQL. So one solution is to execute raw CQL from the driver:

session.Execute(@"select * 
    from cookie_history 
    where cookie_id = 1242a96c-4bd4-8505-1bea-803784f80c18 
    and create_date > 5812e74d-ba49-11e3-8d27-27303e6a4831;");