コード例 #1
0
ファイル: QCandidates.cs プロジェクト: bvangrinsven/db4o-net
		public QCandidate ReadSubCandidate(QueryingReadContext context, ITypeHandler4 handler
			)
		{
			ObjectID objectID = ObjectID.NotPossible;
			try
			{
				int offset = context.Offset();
				if (handler is IReadsObjectIds)
				{
					objectID = ((IReadsObjectIds)handler).ReadObjectID(context);
				}
				if (objectID.IsValid())
				{
					return new QCandidate(this, null, objectID._id);
				}
				if (objectID == ObjectID.NotPossible)
				{
					context.Seek(offset);
					object obj = context.Read(handler);
					if (obj != null)
					{
						QCandidate candidate = new QCandidate(this, obj, context.Container().GetID(context
							.Transaction(), obj));
						candidate.ClassMetadata(context.Container().ClassMetadataForObject(obj));
						return candidate;
					}
				}
			}
			catch (Exception)
			{
			}
			// FIXME: Catchall
			return null;
		}