Пример #1
0
        bool DoLast()
        {
            if (Last <= 0)
            {
                return(false);
            }

            Skip  = (int)(TargetCollection.Count(_Query) - Skip - Last);
            First = Last;
            if (Skip >= 0)
            {
                return(false);
            }

            First += Skip;
            if (First <= 0)
            {
                if (Count)
                {
                    WriteObject(0);
                }
                return(true);
            }
            Skip = 0;
            return(false);
        }
Пример #2
0
        protected override void BeginProcessing()
        {
            if (First > 0 && Last > 0)
            {
                throw new PSArgumentException("Parameters First and Last cannot be specified together.");
            }

            try
            {
                switch (ParameterSetName)
                {
                case nsCount:
                    if (First > 0 || Skip > 0 || Last > 0)
                    {
                        break;
                    }

                    WriteObject(TargetCollection.Count(_Query));
                    return;

                case nsDistinct:
                    DoDistinct();
                    return;

                case nsRemove:
                    DoRemove();
                    return;

                case nsUpdate:
                    DoUpdate();
                    return;
                }

                // Last -> First and Skip
                if (DoLast())
                {
                    return;
                }

                // Count
                if (Count)
                {
                    WriteObject(TargetCollection.Count(_Query, Skip, First));
                    return;
                }

                //_131018_160000 Do not use WriteObject(.., true), that seems to take a lot more memory
                foreach (var document in TargetCollection.FindAs(DocumentType, _Query, Modes, _SortBy, Skip, First, _Fields))
                {
                    WriteObject(document);
                }
            }
            catch (MongoException ex)
            {
                WriteException(ex, null);
            }
        }