public static void ReplaceAllItemRefs(IDbConnection connection, ISyncableStore store,
ISyncableItemInfo remoteItemInfo, ISyncableItemInfo changedItemInfo)
{
// update *all* the itemData.item refs in all rows from remoteItemInfo to changedItemInfo
var selectItemDataCommand = connection.CreateCommand();
selectItemDataCommand.CommandText = String.Format("SELECT ItemID, ItemData FROM SyncItems");
using (var reader = selectItemDataCommand.ExecuteReader())
{
while (reader != null && reader.Read())
{
JObject itemData = JObject.Parse((string)reader["ItemData"]);
bool needToUpdate = false;
foreach (var itemRefJson in itemData["item"]["itemRefs"])
{
ISyncableItemInfo referencedItemInfo = SyncUtil.SyncableItemInfoFromJson(itemRefJson);
if (referencedItemInfo.ItemType == remoteItemInfo.ItemType &&
referencedItemInfo.Created.ReplicaId == remoteItemInfo.Created.ReplicaId &&
referencedItemInfo.Created.ReplicaTickCount == remoteItemInfo.Created.ReplicaTickCount &&
referencedItemInfo.Modified.ReplicaId == remoteItemInfo.Modified.ReplicaId &&
referencedItemInfo.Modified.ReplicaTickCount == remoteItemInfo.Modified.ReplicaTickCount
)
{
itemRefJson["creationReplicaID"] = changedItemInfo.Created.ReplicaId;
itemRefJson["creationReplicaTickCount"] = changedItemInfo.Created.ReplicaTickCount;
itemRefJson["modificationReplicaID"] = changedItemInfo.Modified.ReplicaId;
itemRefJson["modificationReplicaTickCount"] = changedItemInfo.Modified.ReplicaTickCount;
needToUpdate = true;
}
}
if (needToUpdate)
{
IDbCommand updateCommand = connection.CreateCommand();
updateCommand.CommandText =
"UPDATE SyncItems SET ItemData=@ItemData, GlobalModifiedReplica=@ModifiedReplica, ModifiedTickCount=@TickCount WHERE ItemID=@ItemID";
updateCommand.AddParameter("@ItemID", reader["ItemID"]);
updateCommand.AddParameter("@ItemData", itemData.ToString());
updateCommand.AddParameter("@TickCount", store.IncrementLocalRepilcaTickCount());
updateCommand.AddParameter("@ModifiedReplica", store.GetLocalReplicaId());
updateCommand.ExecuteNonQuery();
}
}
}
}
private IEnumerable <SyncConflict> LoadConflicts(IDbConnection connection)
{
var conflicts = new List <SyncConflict>();
IDbCommand getInsertedItemsCommand = connection.CreateCommand();
getInsertedItemsCommand.CommandText =
String.Format(
"SELECT ItemID, SyncStatus, ItemType, GlobalCreatedReplica, CreatedTickCount, GlobalModifiedReplica, ModifiedTickCount, ItemData FROM SyncItems WHERE SyncStatus NOT IN ({0},{1},{2},{3},{4},{5})",
(int)SyncStatus.Insert,
(int)SyncStatus.Update,
(int)SyncStatus.Delete,
(int)SyncStatus.DeleteNonExisting,
(int)SyncStatus.MayBeNeeded,
(int)SyncStatus.InsertConflict
);
using (var reader = getInsertedItemsCommand.ExecuteReader())
{
while (reader != null && reader.Read())
{
var createdReplicaInfo = SessionDbHelper.ReplicaInfoFromDataReader(reader, "Created");
var modifiedReplicaInfo = SessionDbHelper.ReplicaInfoFromDataReader(reader, "Modified");
var itemType = (string)reader["ItemType"];
var remoteItemInfo = new SyncableItemInfo
{
ItemType = itemType,
Created = createdReplicaInfo,
Modified = modifiedReplicaInfo,
Deleted = false
};
var itemId = Convert.ToInt64(reader["ItemID"]);
var status = (SyncStatus)reader["SyncStatus"];
ISyncableItemInfo localItemInfo = _store.LocateCurrentItemInfo(remoteItemInfo);
if (status == SyncStatus.UpdateConflict)
{
// Check to see if the "conflict" is actually an exact same update
var builder = SyncUtil.JsonItemFromSyncableItemInfo(localItemInfo);
_store.BuildItemData(localItemInfo, builder);
var localItemData = new JObject {
{ "item", builder }
};
var remoteItemData = JObject.Parse((string)reader["ItemData"]);
var dupStatus = _store.GetDuplicateStatus(remoteItemInfo.ItemType, localItemData,
remoteItemData);
if (dupStatus == DuplicateStatus.Exact)
{
var tickCount = _store.IncrementLocalRepilcaTickCount();
var modifiedReplica = new ReplicaInfo
{
ReplicaId = _store.GetLocalReplicaId(),
ReplicaTickCount = tickCount
};
SessionDbHelper.ResolveItemNoData(connection, remoteItemInfo, SyncStatus.Update,
modifiedReplica);
// TODO: Really should have an update status that just updates the modified repos without doing everything else, but this should work
continue;
}
}
conflicts.Add(new SyncConflict(itemId, status, localItemInfo, remoteItemInfo));
}
}
return(conflicts);
}