/// <summary>
/// Applies changes passed in a sync request to the store.
/// </summary>
/// <param name="request">A sync request.</param>
/// <returns>Response object for the applied changes.</returns>
public SyncStoreResponse Handle(SyncStoreRequest <T> request, Rows mode = Rows.All)
{
SyncStoreResponse res = new SyncStoreResponse();
if (mode == Rows.All || mode == Rows.Added || mode == Rows.AddedAndUpdated)
{
HandleAdded(request, res);
}
if (mode == Rows.All || mode == Rows.Updated || mode == Rows.AddedAndUpdated)
{
HandleUpdated(request, res);
}
if (mode == Rows.All || mode == Rows.Removed)
{
HandleRemoved(request, res);
}
if (mode == Rows.All)
{
bool hasRows = res.rows != null && res.rows.Count > 0;
bool hasRemoved = res.removed != null && res.removed.Count > 0;
if (!hasRows && !hasRemoved)
{
throw new CrudException("No data to save.", Codes.NO_SYNC_DATA);
}
}
return(OnHandled(res));
}
/// <summary>
/// Performs removing of requested records.
/// </summary>
/// <param name="request">Request holding store changes.</param>
/// <param name="response">Response to put updating results into.</param>
/// <returns>Response object.</returns>
public SyncStoreResponse HandleRemoved(SyncStoreRequest <T> request, SyncStoreResponse response)
{
IList <IDictionary <String, Object> > removed = new List <IDictionary <String, Object> >();
SyncStoreResponse resp = response ?? new SyncStoreResponse();
if (request.removed != null)
{
foreach (T row in request.removed)
{
removed.Add(OnRecordRemoved(row, Remove(row)));
}
}
if (removed.Count > 0)
{
if (resp.removed != null)
{
resp.removed = resp.removed.Concat(removed).ToList();
}
else
{
resp.removed = removed;
}
}
return(OnRemovedHandled(resp));
}
/// <summary>
/// Performs updating of requested records.
/// </summary>
/// <param name="request">Request holding store changes.</param>
/// <param name="response">Response to put updating results into.</param>
/// <returns>Response object.</returns>
public SyncStoreResponse HandleUpdated(SyncStoreRequest <T> request, SyncStoreResponse response)
{
IList <IDictionary <String, Object> > updated = new List <IDictionary <String, Object> >();
SyncStoreResponse resp = response ?? new SyncStoreResponse();
if (request.updated != null)
{
foreach (IDictionary <String, Object> changes in request.updated)
{
T record = GetEntity(changes);
updated.Add(OnRecordUpdated(record, Update(record, changes)));
}
}
if (updated.Count > 0)
{
if (resp.rows != null)
{
resp.rows = resp.rows.Concat(updated).ToList();
}
else
{
resp.rows = updated;
}
}
return(OnUpdatedHandled(resp));
}
protected SyncStoreResponse AddModifiedRows(Scheduler scheduler, string table, SyncStoreResponse resp)
{
if (scheduler.HasUpdatedRows(table))
{
if (resp == null) resp = new SyncStoreResponse();
var rows = scheduler.GetUpdatedRows(table);
resp.rows = resp.rows != null ? resp.rows.Concat(rows).ToList() : rows;
}
if (scheduler.HasRemovedRows(table))
{
if (resp == null) resp = new SyncStoreResponse();
var removed = scheduler.GetRemovedRows(table);
resp.removed = resp.removed != null ? resp.removed.Concat(removed).ToList() : removed;
}
return resp;
}
protected virtual SyncStoreResponse OnHandled(SyncStoreResponse response)
{
return(response);
}
