So I'm probably doing something tragically wrong with db4o to cause this issue to happen...but every time I reset my context I lose all of my objects. What I mean by this is that as soon as my container object goes out of scope (due to an IIS reset or whatever) I can no longer retrieve any of the objects that I previously persisted. Within the scope of a "session" I can retrieve everything but as soon as that "session" dies then nothing is returned. What's odd is that the database file continues to grow in size so I know everything is in there it just never gets returned after the fact. Any idea what's going on?
Here is my generic wrapper for db4o:
public class DataStore : IDisposable {
private static readonly object serverLock = new object();
private static readonly object containerLock = new object();
private static IObjectServer server;
private static IObjectContainer container;
private static IObjectServer Server {
get {
lock (serverLock) {
if (server == null)
server = Db4oFactory.OpenServer(ConfigurationManager.AppSettings["DatabaseFilePath"], 0);
return server;
}
}
}
private static IObjectContainer Container {
get {
lock (containerLock) {
if (container == null)
container = Server.OpenClient();
return container;
}
}
}
public IQueryable<T> Find<T>(Func<T, bool> predicate) {
return (from T t in Container where predicate(t) select t).AsQueryable();
}
public IQueryable<T> Find<T>() {
return (from T t in Container select t).AsQueryable();
}
public ValidationResult Save(IValidatable item) {
var validationResult = item.Validate();
if (!validationResult.IsValid) return validationResult;
Container.Store(item);
return validationResult;
}
public void Delete(object item) {
Container.Delete(item);
}
public void Dispose() {
Server.Close();
Container.Close();
}
}