private VersionedId Update(MailboxSession itemStore, bool getExisting, SingleInstanceItemHandler.ContentUpdater updater)
{
int i = 0;
while (i < 5)
{
i++;
try
{
return(this.UpdateRetryable(itemStore, getExisting, updater));
}
catch (MapiExceptionObjectChanged arg)
{
SingleInstanceItemHandler.Tracer.TraceError <SingleInstanceItemHandler, IExchangePrincipal, MapiExceptionObjectChanged>((long)this.GetHashCode(), "{0}: Exception updating item: Mailbox = {1}, exception = {2}, retrying", this, itemStore.MailboxOwner, arg);
if (i == 5)
{
throw;
}
}
catch (ObjectNotFoundException arg2)
{
SingleInstanceItemHandler.Tracer.TraceError <SingleInstanceItemHandler, IExchangePrincipal, ObjectNotFoundException>((long)this.GetHashCode(), "{0}: Exception updating item: Mailbox = {1}, exception = {2}, retrying", this, itemStore.MailboxOwner, arg2);
if (i == 5)
{
throw;
}
}
catch (SaveConflictException arg3)
{
SingleInstanceItemHandler.Tracer.TraceError <SingleInstanceItemHandler, IExchangePrincipal, SaveConflictException>((long)this.GetHashCode(), "{0}: Exception updating item: Mailbox = {1}, exception = {2}, retrying", this, itemStore.MailboxOwner, arg3);
if (i == 5)
{
throw;
}
}
}
return(null);
}
public void UpdateItemContent(MailboxSession itemStore, SingleInstanceItemHandler.ContentUpdater updater)
{
this.Update(itemStore, true, updater);
}
private VersionedId UpdateRetryable(MailboxSession itemStore, bool getExisting, SingleInstanceItemHandler.ContentUpdater updater)
{
List <object[]> list = this.QueryItems(itemStore);
VersionedId versionedId = this.GetMostRecentItem(list);
if (versionedId == null)
{
try
{
using (Folder folder = Folder.Bind(itemStore, this.defaultFolder))
{
using (Item item = MessageItem.Create(itemStore, folder.Id))
{
item.ClassName = this.messageClass;
using (TextWriter textWriter = item.Body.OpenTextWriter(BodyFormat.TextPlain))
{
textWriter.Write(updater(null));
}
ConflictResolutionResult conflictResolutionResult = item.Save(SaveMode.ResolveConflicts);
if (conflictResolutionResult.SaveStatus == SaveResult.IrresolvableConflict)
{
throw new SaveConflictException(ServerStrings.ExSaveFailedBecauseOfConflicts(item.Id), conflictResolutionResult);
}
item.Load();
versionedId = item.Id;
}
}
SingleInstanceItemHandler.Tracer.TraceDebug <SingleInstanceItemHandler, VersionedId, IExchangePrincipal>((long)this.GetHashCode(), "{0}: Created new item itemId={1} on mailbox {2}", this, versionedId, itemStore.MailboxOwner);
goto IL_1CD;
}
catch (ObjectNotFoundException ex)
{
SingleInstanceItemHandler.Tracer.TraceError <SingleInstanceItemHandler, IExchangePrincipal, ObjectNotFoundException>((long)this.GetHashCode(), "{0}: bind to folder failed on mailbox {1}. Exception={2}", this, itemStore.MailboxOwner, ex);
throw new SingleInstanceItemHandlerPermanentException(Strings.FailedToGetItem(this.messageClass, this.defaultFolder.ToString()), ex);
}
}
using (Item item2 = MessageItem.Bind(itemStore, versionedId))
{
string existingContent = null;
if (getExisting)
{
using (TextReader textReader = item2.Body.OpenTextReader(BodyFormat.TextPlain))
{
existingContent = textReader.ReadToEnd();
}
}
using (TextWriter textWriter2 = item2.Body.OpenTextWriter(BodyFormat.TextPlain))
{
textWriter2.Write(updater(existingContent));
}
ConflictResolutionResult conflictResolutionResult2 = item2.Save(SaveMode.ResolveConflicts);
if (conflictResolutionResult2.SaveStatus == SaveResult.IrresolvableConflict)
{
throw new SaveConflictException(ServerStrings.ExSaveFailedBecauseOfConflicts(item2.Id), conflictResolutionResult2);
}
}
SingleInstanceItemHandler.Tracer.TraceDebug <SingleInstanceItemHandler, VersionedId, IExchangePrincipal>((long)this.GetHashCode(), "{0}: Updated item itemId={1} on mailbox {2}", this, versionedId, itemStore.MailboxOwner);
IL_1CD:
using (IEnumerator <object[]> enumerator = list.GetEnumerator())
{
List <VersionedId> list2 = new List <VersionedId>();
for (;;)
{
bool flag = enumerator.MoveNext();
if ((!flag || list2.Count == 100) && list2.Count > 0)
{
try
{
itemStore.Delete(DeleteItemFlags.HardDelete, list2.ToArray());
}
catch (ObjectNotFoundException)
{
SingleInstanceItemHandler.Tracer.TraceError <SingleInstanceItemHandler, IExchangePrincipal>((long)this.GetHashCode(), "{0}: ObjectNotFoundException encountred while trying to delete duplicate item on mailbox {1}", this, itemStore.MailboxOwner);
}
list2.Clear();
}
if (!flag)
{
break;
}
VersionedId versionedId2 = (VersionedId)enumerator.Current[0];
if (versionedId != versionedId2)
{
list2.Add(versionedId2);
SingleInstanceItemHandler.Tracer.TraceDebug <SingleInstanceItemHandler, VersionedId, IExchangePrincipal>((long)this.GetHashCode(), "{0}: Deleting extra item {1} on mailbox {2}", this, versionedId2, itemStore.MailboxOwner);
}
}
}
return(versionedId);
}
