| public ResetDirtyAndDeleteTombstones ( ) : void | ||
| return | void | |
/// <summary>
/// OfflineSyncProvider method implementation called when a change set returned from GetChangeSet has been
/// successfully uploaded.
/// </summary>
/// <param name="state">The unique identifier passed in to the GetChangeSet call.</param>
/// <param name="response">ChangeSetResponse that contains an updated server blob and any conflicts or errors that
/// happened on the service.</param>
public override void OnChangeSetUploaded(Guid state, ChangeSetResponse response)
{
if (null == response)
{
throw new ArgumentNullException("response");
}
if (null != response.Error)
{
throw new Exception("Exception during sync!");
}
var storageHandler = new SqlCeStorageHandler();
if (null != response.UpdatedItems && 0 != response.UpdatedItems.Count)
{
foreach (var item in response.UpdatedItems)
{
var offlineEntity = (SqlCeOfflineEntity) item;
storageHandler.ApplyItem(offlineEntity);
}
}
if (null != response.Conflicts && 0 != response.Conflicts.Count)
{
foreach (var conflict in response.Conflicts)
{
// We have an conflict so apply the LiveEntity
var liveEntity = (SqlCeOfflineEntity)conflict.LiveEntity;
// For a SyncError, which resulted from a client insert, the winning item may be a tombstone version
// of the client entity. In this case, the ServiceMetadata.Id property of the LiveEntity will be null.
// We need to lookup the item using primary keys in order to update it.
if (conflict.GetType() == typeof(SyncError))
{
var errorEntity = ((SyncError) conflict).ErrorEntity;
if (!liveEntity.ServiceMetadata.IsTombstone)
{
// If the live entity is not a tombstone, then we just need to update the entity.
storageHandler.ApplyItem(liveEntity);
}
else
{
// At this point, the LiveEntity is a tombstone and does not have primary key info.
// If the live entity is a tombstone, then delete the item by looking up the primary key
// from the error entity.
// The error entity in this case will have both Id and the primary keys.
errorEntity.ServiceMetadata.IsTombstone = true;
errorEntity.ServiceMetadata.Id = null;
storageHandler.ApplyItem((SqlCeOfflineEntity) errorEntity);
}
}
else
{
storageHandler.ApplyItem(liveEntity);
}
}
}
// Clear all the isdirty flags and delete all rows with IsTombstone = true
storageHandler.ResetDirtyAndDeleteTombstones();
storageHandler.SaveAnchor(response.ServerBlob);
}