private static Dictionary <IMigrationFileAttachment, List <IMigrationAction> > GroupAttachmentByMetadata(ChangeGroup attachmentChangeGroup)
{
var metadataComparer = new BasicFileAttachmentComparer();
Dictionary <IMigrationFileAttachment, List <IMigrationAction> > perAttachmentChangeActions =
new Dictionary <IMigrationFileAttachment, List <IMigrationAction> >(new BasicFileAttachmentComparer());
foreach (IMigrationAction migrationAction in attachmentChangeGroup.Actions)
{
if (IsAttachmentSpecificChangeAction(migrationAction.Action))
{
FileAttachmentMetadata attchMetadata = FileAttachmentMetadata.Create(migrationAction.MigrationActionDescription);
if (null != attchMetadata)
{
IMigrationFileAttachment existingKey = null;
foreach (IMigrationFileAttachment key in perAttachmentChangeActions.Keys)
{
if (metadataComparer.Equals(key, attchMetadata))
{
existingKey = key;
break;
}
}
if (null == existingKey)
{
existingKey = attchMetadata;
perAttachmentChangeActions.Add(existingKey, new List <IMigrationAction>());
}
perAttachmentChangeActions[existingKey].Add(migrationAction);
}
}
}
return(perAttachmentChangeActions);
}
public void Update(string workItemId, IMigrationAction action)
{
FileAttachmentMetadata attchMetadata = FileAttachmentMetadata.Create(action.MigrationActionDescription);
if (null != attchMetadata)
{
var queryByItem = QueryByItem(workItemId);
if (action.Action == WellKnownChangeActionId.AddAttachment)
{
if (queryByItem.Count() > 0)
{
queryByItem.First().RelationshipExistsOnServer = true;
if (queryByItem.First().OtherProperty.HasValue)
{
queryByItem.First().OtherProperty = queryByItem.First().OtherProperty.Value + 1;
}
else
{
queryByItem.First().OtherProperty = 1;
}
}
else
{
var newAttchRecord = CreateNewAttachmentStoreRecord(
workItemId, FileAttachmentMetadata.CreateAttachmentStorageId(action.MigrationActionDescription), 1);
}
}
else if (action.Action == WellKnownChangeActionId.DelAttachment)
{
if (queryByItem.Count() > 0)
{
if (queryByItem.First().RelationshipExistsOnServer)
{
if (queryByItem.First().OtherProperty.HasValue&& queryByItem.First().OtherProperty.Value > 0)
{
queryByItem.First().OtherProperty = queryByItem.First().OtherProperty.Value - 1;
if (queryByItem.First().OtherProperty == 0)
{
queryByItem.First().RelationshipExistsOnServer = false;
}
}
else
{
queryByItem.First().OtherProperty = 0;
queryByItem.First().RelationshipExistsOnServer = false;
}
}
}
}
m_context.TrySaveChanges();
}
}
