public override string ToString()
{
GenericSerializer <FileAttachmentMetadata> serializer = new GenericSerializer <FileAttachmentMetadata>();
return(serializer.Serialize(this));
}
public void UpdatePerItemAttachmentChangesByCheckingRelatedItemRecords(
string workItemId,
ChangeGroup attachmentChangeGroup,
out List <FileAttachmentMetadata> additionalAttachmentToDelete)
{
if (string.IsNullOrEmpty(workItemId))
{
throw new ArgumentNullException("workItemId");
}
additionalAttachmentToDelete = new List <FileAttachmentMetadata>();
var queryByItem = QueryByItem(workItemId);
var perItemExistingAttachments =
from attch in queryByItem
where attch.RelationshipExistsOnServer
select attch;
if (attachmentChangeGroup.Actions == null ||
attachmentChangeGroup.Actions.Count == 0)
{
GenericSerializer <FileAttachmentMetadata> serializer = new GenericSerializer <FileAttachmentMetadata>();
foreach (var attch in perItemExistingAttachments)
{
if (!attch.OtherProperty.HasValue)
{
continue;
}
for (int i = 0; i < attch.OtherProperty.Value; ++i)
{
try
{
additionalAttachmentToDelete.Add(serializer.Deserialize(attch.RelatedArtifactId));
}
catch (Exception e)
{
TraceManager.TraceVerbose(e.ToString());
}
}
}
foreach (var attch in perItemExistingAttachments)
{
attch.OtherProperty = 0;
attch.RelationshipExistsOnServer = false;
}
m_context.TrySaveChanges();
}
else
{
Dictionary <IMigrationFileAttachment, List <IMigrationAction> > perAttachmentChangeActions =
GroupAttachmentByMetadata(attachmentChangeGroup);
List <IMigrationAction> skippedActions = new List <IMigrationAction>(attachmentChangeGroup.Actions.Count);
foreach (var attchSpecificActions in perAttachmentChangeActions)
{
if (attchSpecificActions.Value.Count == 0)
{
continue;
}
string attachmentStorageId = attchSpecificActions.Key.ToString();
int deltaAttachmentCount = GetAttachmentCountInDelta(attchSpecificActions.Value);
var attachmentInStore = QueryItemSpecificAttachment(perItemExistingAttachments, attachmentStorageId);
int attachmentInStoreCount = GetAttachmentInStoreCount(attachmentInStore);
int serverStoreCountDiff = deltaAttachmentCount - attachmentInStoreCount;
if (serverStoreCountDiff >= 0)
{
int redundantAttachmentActionCount = deltaAttachmentCount - serverStoreCountDiff;
var addAttachmentActionToSkip =
attchSpecificActions.Value.Where(a => a.Action == WellKnownChangeActionId.AddAttachment).Take(redundantAttachmentActionCount);
skippedActions.AddRange(addAttachmentActionToSkip);
}
else if (serverStoreCountDiff < 0)
{
IMigrationAction action = attchSpecificActions.Value[0];
do
{
attachmentChangeGroup.Actions.Add(CreateDeleteAttachmentAction(action));
}while (++serverStoreCountDiff < 0);
}
int countAfterUpdateStore = UpdateStore(workItemId, attachmentStorageId, serverStoreCountDiff);
foreach (IMigrationAction action in attchSpecificActions.Value)
{
XmlElement attachmentNode =
action.MigrationActionDescription.DocumentElement.SelectSingleNode("/WorkItemChanges/Attachment") as XmlElement;
System.Diagnostics.Debug.Assert(null != attachmentNode, "attachmentNode is NULL");
attachmentNode.SetAttribute("CountInSourceSideStore", countAfterUpdateStore.ToString());
}
}
foreach (IMigrationAction skippedAction in skippedActions)
{
attachmentChangeGroup.Actions.Remove(skippedAction);
}
}
}
