C# RavenDB delete - ravendb

Question

I have the following object:
WordOccurrence, which has two attributes:
- string word.
- int occurrences.
I would like to do the following, without getting an exeception (-:
WordOccurrence w1 = new WordOccurrence() {Word ="Hey", Occurrence = 1};
WordOccurrence w2 = new WordOccurrence() {Word ="Hey", Occurrence = 1};
now I would like to store the first one , w1, but with w2 to delete him.
session.store(w1);
session.delete(w2); -> gets exeception...
is it possible??

Answer 1

Please try formatting the code in your question, and rephrasing what you are trying to do. It isn't clear if you're expecting that saving w2 should refer to the same object as w1, but they aren't - even if the ID is the same that isn't how Raven will handle the delete. You need to either delete the object you just stored immediately after you call SaveChanges (which I don't understand why you would want to do), or in the more likely scenario Load it at some point later on and then call Delete:
var w1Id = string.empty;
using(session)
{
var w1 = new WordOccurrence { Word="Hey", Occurrence=1};
session.store(w1);
session.SaveChanges();
w1Id = w1.Id;
//if you aren't declaring the Id property for some reason...
w1Id = session.Advanced.GetDocumentId(w1);
}
//somewhere else in the code
using(session)
{
var w1 = session.Load<WordOccurrence>(w1Id);
session.Delete(w1);
session.SaveChanges();
}
Bottom line is that you can't delete something you just told the session to Store, before you even called SaveChanges. If you're trying to undo a Store operation, perhaps because the user hit an undo button, just don't call SaveChanges (if it's the only operation in the session), or use Session.Advanced.Evict(w1) to evit that object from the session.
If you are expecting the Word property to be the Id of the document you can make that happen by customizing the DocumentStore conventions