protected override void UpdateMetadataStoreWithLocalChanges()
{
SyncVersion newVersion = new SyncVersion(0, _metaData.GetNextTickCount());
_metaData.DeleteDetector.MarkAllItemsUnreported();
foreach (SyncTransferData data in _localItems)
{
//Look up an item's metadata by its ID...
ItemMetadata item = _metaData.FindItemMetadataByUniqueIndexedField(URI_COLUMNNAME, data.Uri);
if (item == null)
{
//New item, must have been created since that last time the metadata was updated.
//Create the item metadata required for sync (giving it a SyncID and a version, defined to be a DWORD and a ULONGLONG
//For creates, simply provide the relative replica ID (0) and the tick count for the provider (ever increasing)
SyncGlobalId globalId = new SyncGlobalId(0, Guid.NewGuid());
item = _metaData.CreateItemMetadata(new SyncId(globalId), newVersion);
item.ChangeVersion = newVersion;
item.SetCustomField(URI_COLUMNNAME, data.Uri);
SaveItemMetadata(item);
//Increment sync item counter need for reporting progress info
base.RemainingSessionWorkEstimate++;
}
else
{
if (data.LastModified > item.GetUInt64Field(TIMESTAMP_COLUMNNAME)) // the item has changed since the last sync operation.
{
//Changed Item, this item has changed since the last time the metadata was updated.
//Assign a new version by simply stating "who" modified this item (0 = local/me) and "when" (tick count for the store)
item.ChangeVersion = newVersion;
SaveItemMetadata(item);
//Increment sync item counter need for reporting progress info
base.RemainingSessionWorkEstimate++;
}
else
{
//Unchanged item, nothing has changes so just mark it as live so that the metadata knows it has not been deleted.
_metaData.DeleteDetector.ReportLiveItemById(item.GlobalId);
}
}
}
//Now go back through the items that are no longer in the store and mark them as deleted in the metadata.
//This sets the item as a tombstone.
foreach (ItemMetadata item in _metaData.DeleteDetector.FindUnreportedItems())
{
item.MarkAsDeleted(newVersion);
SaveItemMetadata(item);
}
}
public static ItemMetadataAdaptor CreateInstance(ItemMetadata itemMetadata)
{
ItemMetadataAdaptor retVal = itemMetadata as ItemMetadataAdaptor;
//Создаем новый объект и копируем туда свойства
if (retVal == null)
{
retVal = new ItemMetadataAdaptor(new SynchronizationMetadataRow());
SyncGlobalId syncGlobalId = itemMetadata.GlobalId.GetSyncGlobalId();
retVal._metadataRow.UniqueId = syncGlobalId.UniqueId;
retVal._metadataRow.Prefix = Convert.ToInt64(syncGlobalId.Prefix);
retVal._metadataRow.IsDeleted = itemMetadata.IsDeleted;
retVal.ChangeVersion = itemMetadata.ChangeVersion;
retVal.CreationVersion = itemMetadata.CreationVersion;
}
return(retVal);
}
private ItemMetadata CreateMetadataItem(PrimaryKeyId?eventPk)
{
if (eventPk == null)
{
throw new ArgumentNullException("eventPk");
}
SyncVersion newVersion = GetNewSyncVersion();
//New item, must have been created since that last time the metadata was updated.
//Create the item metadata required for sync (giving it a SyncID and a version, defined to be a DWORD and a ULONGLONG
//For creates, simply provide the relative replica ID (0) and the tick count for the provider (ever increasing)
SyncGlobalId globalId = new SyncGlobalId(0, Guid.NewGuid());
ItemMetadata retVal = Provider.ReplicaMetadata.CreateItemMetadata(new SyncId(globalId), newVersion);
retVal.ChangeVersion = newVersion;
//Set Uri as pk event
retVal.SetCustomField(SyncReplicaMetadata.URI_COLUMNNAME, (Guid)eventPk.Value);
Provider.ReplicaMetadata.SaveItemMetadata(retVal);
return(retVal);
}
private ItemMetadata CreateMetadataItem(PrimaryKeyId? eventPk)
{
if (eventPk == null)
{
throw new ArgumentNullException("eventPk");
}
SyncVersion newVersion = GetNewSyncVersion();
//New item, must have been created since that last time the metadata was updated.
//Create the item metadata required for sync (giving it a SyncID and a version, defined to be a DWORD and a ULONGLONG
//For creates, simply provide the relative replica ID (0) and the tick count for the provider (ever increasing)
SyncGlobalId globalId = new SyncGlobalId(0, Guid.NewGuid());
ItemMetadata retVal = Provider.ReplicaMetadata.CreateItemMetadata(new SyncId(globalId), newVersion);
retVal.ChangeVersion = newVersion;
//Set Uri as pk event
retVal.SetCustomField(SyncReplicaMetadata.URI_COLUMNNAME, (Guid)eventPk.Value);
Provider.ReplicaMetadata.SaveItemMetadata(retVal);
return retVal;
}
