Updates

Updates the structure in the Structure, Indexes- and Uniques tables.

var item = new SimpleItem { Value = "A" };
Database.WriteOnce().Insert(item);
...
...
using (var session = Database.BeginSession())
{
    var refetched = session.GetById<SimpleItem>(item.Id);
    refetched.Value = "B";

    session.Update(refetched);
}

##Concurrency tokens From v10.0 you can now chose to include a concurrency token in your model. Read more about it here.

##Inline updates From v10.0 you can now do "inline updates" and also (optional) provide a proceed condition.

using(var session = db.BeginSession())
{
    session.Update<Customer>(
        id, 
        c => c.BonusPoints = bonusPointIncreasedEvent.NewValue);
}

//or

db.UseOnceTo().Update<Customer>(
    id, 
    c => c.BonusPoints = bonusPointIncreasedEvent.NewValue);

and with the proceed clause:

using(var session = db.BeginSession())
{
    session.Update<Customer>(
        id, 
        c => c.BonusPoints = bonusPointIncreasedEvent.NewValue, 
        c => bonusPointIncreasedEvent.Sequence > c.LastSequence);
}

//or

db.UseOnceTo().Update<Customer>(
    id, 
    c => c.BonusPoints = bonusPointIncreasedEvent.NewValue,
    c => bonusPointIncreasedEvent.Sequence > c.LastSequence);

This is useful e.g. when using SisoDb in a concurrent and multithreaded environment like in a asynchronous CQRS solution, since it lets you keep down the update-scope and only update if it's a later message.