public override async Task <int> ReadAsync(byte[] buffer, int offset, int count, CancellationToken cancellationToken)
{
int result = 0;
await _session.Run(() =>
{
cancellationToken.ThrowIfCancellationRequested();
result = _inlinedStream.Read(buffer, offset, count);
});
return(result);
}
private async ValueTask <PostStoreEntityId[]> DoQueryByFlags(IEsentSession session, PostStoreEntityType type, PostStoreEntityId?parentId, IList <Guid> havingFlags)
{
return(await session.Run(() =>
{
var found = new List <HashSet <int> >();
if (havingFlags != null && havingFlags.Count > 0)
{
using (var table = OpenPostsTable(session, OpenTableGrbit.ReadOnly))
{
foreach (var flag in havingFlags)
{
if (parentId != null)
{
var index = table.Indexes.DirectParentFlagsIndex;
index.SetAsCurrentIndex();
found.Add(index.EnumerateAsRetrieveIdFromIndexView(index.CreateKey(parentId.Value.Id, flag)).Select(id => id.Id).ToHashSet());
}
else
{
var index = table.Indexes.TypeFlagsIndex;
index.SetAsCurrentIndex();
found.Add(index.EnumerateAsRetrieveIdFromIndexView(index.CreateKey((byte)type, flag)).Select(id => id.Id).ToHashSet());
}
}
}
}
if (found.Count == 0)
{
goto CancelLabel;
}
var r = found[0];
foreach (var f in found.Skip(1))
{
r.IntersectWith(f);
}
return r.Select(id => new PostStoreEntityId()
{
Id = id
}).ToArray();
CancelLabel:
return new PostStoreEntityId[0];
}));
}
private async ValueTask <List <PostStoreEntityId> > FilterByFlags(PostStoreEntityType type, PostStoreEntityId?parentId, IList <Guid> havingFlags, IList <Guid> notHavingFlags, IEsentSession session)
{
var bookmarks = await DoQueryByFlags(session, type, parentId, havingFlags);
if (bookmarks == null || bookmarks.Length == 0)
{
return(new List <PostStoreEntityId>());
}
return(await session.Run(() =>
{
var result = new List <PostStoreEntityId>();
var nhs = notHavingFlags != null ? new HashSet <Guid>(notHavingFlags) : new HashSet <Guid>();
using (var table = OpenPostsTable(session, OpenTableGrbit.ReadOnly))
{
foreach (var bm in bookmarks)
{
if (table.Indexes.PrimaryIndex.Find(table.Indexes.PrimaryIndex.CreateKey(bm.Id)))
{
if (nhs.Count > 0)
{
if (table.Columns.Flags.Values.All(v => v?.Value == null || !nhs.Contains(v?.Value ?? Guid.Empty)))
{
result.Add(new PostStoreEntityId()
{
Id = table.Columns.Id
});
}
}
else
{
result.Add(new PostStoreEntityId()
{
Id = table.Columns.Id
});
}
}
}
}
return result;
}));
}
