private static void upgradeFlags()
{
string pkFilter = TableQuery.GenerateFilterCondition("PartitionKey", QueryComparisons.GreaterThanOrEqual, "");
TableQuery query = new TableQuery().Where(pkFilter).Select(new string[] { "flags" });
int count = 0;
foreach (DynamicTableEntity entity in Warehouse.DiscussionLoadTable.ExecuteQuery(query))
{
string flags = entity.GetFlags();
StringBuilder builder = new StringBuilder("\n");
SandFlags.SplitFlags(flags, (meta_title, meta_value) =>
{
builder.Append(meta_title + "=" + meta_value + "\n");
count++;
});
if (builder.Length > 1)
{
entity["flags2"] = new EntityProperty(builder.ToString());
Warehouse.DiscussionLoadTable.Execute(TableOperation.Merge(entity));
}
}
}
public static bool VoteLetter(string board_id, string discussion_id, string letter_id, string delta_flags)
{
try
{
SandFlags.SplitFlags(delta_flags, (meta_title, meta_value) =>
{
VoteBookStore.Vote(board_id, discussion_id, letter_id, meta_title);
});
}
catch (StorageException ex)
{
return(false);
}
string partition_key = SandId.CombineId(board_id, discussion_id);
string pkFilter = TableQuery.GenerateFilterCondition("PartitionKey", QueryComparisons.Equal, partition_key);
string rkFilter = TableQuery.GenerateFilterCondition("RowKey", QueryComparisons.Equal, letter_id);
string combinedFilter = TableQuery.CombineFilters(pkFilter, TableOperators.And, rkFilter);
TableQuery query = new TableQuery().Where(combinedFilter).Select(new string[] { "flags2" });
foreach (DynamicTableEntity entity in Warehouse.DiscussionLoadTable.ExecuteQuery(query))
{
entity.OperateFlags(new FlagOperation
{
type = FlagOperation.Type.AddMultiple,
DeltaFlags = delta_flags,
});
if (entity.Properties.Count == 0) // TableOperation.Merge cannot be used to remove property. if "flags" becomes empty, it will be removed from properties and the merge will have no effect.
{
throw new ProgramLogicException();
}
Warehouse.DiscussionLoadTable.Execute(TableOperation.Merge(entity));
}
Warehouse.DiscussionLoadPond.Notify(board_id, discussion_id);
Warehouse.DiscussionSummaryPond.Notify(board_id, discussion_id);
HttpResponse.RemoveOutputCacheItem("/discussionload/" + board_id + "/" + discussion_id);
// Cache of ViewDiscussion is not removed so may serve old version.
return(true);
}
