private static void UpdateItems(IDbConnection connection, ISyncableStore store)
{
// loop through types and apply updates or inserts
foreach (var itemType in store.GetItemTypes())
{
System.Diagnostics.Debug.WriteLine("Updating itemType = " + itemType);
IDbCommand getUpdatedItemsCommand = connection.CreateCommand();
getUpdatedItemsCommand.CommandText =
String.Format(
"SELECT SyncStatus, GlobalCreatedReplica, CreatedTickCount, GlobalModifiedReplica, ModifiedTickCount, ItemData FROM SyncItems WHERE SyncStatus IN ({0},{1}) AND ItemType=@ItemType",
(int)SyncStatus.Insert, (int)SyncStatus.Update);
getUpdatedItemsCommand.AddParameter("@ItemType", itemType);
using (var reader = getUpdatedItemsCommand.ExecuteReader())
{
while (reader != null && reader.Read())
{
var createdReplicaInfo = SessionDbHelper.ReplicaInfoFromDataReader(reader, "Created");
var modifiedReplicaInfo = SessionDbHelper.ReplicaInfoFromDataReader(reader, "Modified");
var itemData = JObject.Parse((string)reader["ItemData"]);
var itemInfo = new SyncableItemInfo
{
ItemType = itemType,
Created = createdReplicaInfo,
Modified = modifiedReplicaInfo,
Deleted = false
};
UpdateItem(connection, store, itemInfo, itemData);
}
}
}
}
private static void DeleteItems(IDbConnection connection, ISyncableStore store)
{
// loop backwards through types and apply deletions
foreach (var itemType in store.GetItemTypes().Reverse())
{
IDbCommand getDeletedItemsCommand = connection.CreateCommand();
getDeletedItemsCommand.CommandText =
String.Format("SELECT * FROM SyncItems WHERE SyncStatus IN ({0},{1}) AND ItemType=@ItemType",
(int)SyncStatus.Delete, (int)SyncStatus.DeleteNonExisting);
getDeletedItemsCommand.AddParameter("@ItemType", itemType);
using (var reader = getDeletedItemsCommand.ExecuteReader())
{
while (reader != null && reader.Read())
{
var createdReplicaInfo = SessionDbHelper.ReplicaInfoFromDataReader(reader, "Created");
var modifiedReplicaInfo = SessionDbHelper.ReplicaInfoFromDataReader(reader, "Modified");
var itemInfo = new SyncableItemInfo
{
ItemType = itemType,
Created = createdReplicaInfo,
Modified = modifiedReplicaInfo,
Deleted = true
};
store.DeleteItem(itemInfo);
}
}
}
}
public static ISyncableItemInfo SyncableItemInfoFromDataReader(IDataReader reader)
{
var createdReplicaInfo = ReplicaInfoFromDataReader(reader, "Created");
var modifiedReplicaInfo = ReplicaInfoFromDataReader(reader, "Modified");
string itemType = reader["ItemType"].ToString();
var status = (SyncStatus)reader["SyncStatus"];
ISyncableItemInfo itemInfo = new SyncableItemInfo
{
ItemType = itemType,
Created = createdReplicaInfo,
Modified = modifiedReplicaInfo,
Deleted = (status == SyncStatus.Delete)
};
return(itemInfo);
}
private static void UpdateItem(IDbConnection connection, ISyncableStore store, ISyncableItemInfo itemInfo,
JObject itemData)
{
// Make sure all the item refs for this item have already been handled
foreach (var itemRefJson in itemData["item"]["itemRefs"])
{
var referencedItemInfo = SyncableItemInfoFromJson(itemRefJson);
var localReferencedItemInfo = store.LocateCurrentItemInfo(referencedItemInfo);
if (localReferencedItemInfo == null || localReferencedItemInfo.Deleted)
{
var getReferencedItemCommand = connection.CreateCommand();
getReferencedItemCommand.CommandText =
String.Format(
"SELECT SyncStatus, GlobalCreatedReplica, CreatedTickCount, GlobalModifiedReplica, ModifiedTickCount, ItemData FROM SyncItems WHERE GlobalCreatedReplica=@GlobalCreatedReplica AND CreatedTickCount=@CreatedTickCount AND ItemType=@ItemType");
getReferencedItemCommand.AddParameter("@GlobalCreatedReplica", referencedItemInfo.Created.ReplicaId);
getReferencedItemCommand.AddParameter("@CreatedTickCount",
referencedItemInfo.Created.ReplicaTickCount);
getReferencedItemCommand.AddParameter("@ItemType", referencedItemInfo.ItemType);
using (var reader = getReferencedItemCommand.ExecuteReader())
{
while (reader != null && reader.Read())
{
var createdReplicaInfo = SessionDbHelper.ReplicaInfoFromDataReader(reader, "Created");
var modifiedReplicaInfo = SessionDbHelper.ReplicaInfoFromDataReader(reader, "Modified");
var refItemData = JObject.Parse((string)reader["ItemData"]);
var possiblyUpdatedRefItemInfo = new SyncableItemInfo
{
ItemType = referencedItemInfo.ItemType,
Created = createdReplicaInfo,
Modified = modifiedReplicaInfo,
Deleted = false
};
UpdateItem(connection, store, possiblyUpdatedRefItemInfo, refItemData);
}
}
}
}
store.SaveItemData(itemInfo, itemData);
}