C# (CSharp) IDataTransform.GetRowCursor示例

示例#1

            protected override DataViewRowCursor GetRowCursorCore(IEnumerable <DataViewSchema.Column> columnsNeeded, Random rand = null)
            {
                var srcCursor = _transform.GetRowCursor(columnsNeeded, rand);
                var clone     = (SequentialDataTransform)MemberwiseClone();

                clone.CloneStateInMapper();
                return(new Cursor(Host, clone, srcCursor));
            }

示例#2

            protected override IRowCursor GetRowCursorCore(Func <int, bool> predicate, Random rand = null)
            {
                var srcCursor = _transform.GetRowCursor(predicate, rand);
                var clone     = (SequentialDataTransform)MemberwiseClone();

                clone.CloneStateInMapper();
                return(new Cursor(Host, clone, srcCursor));
            }

示例#3

 protected override DataViewRowCursor GetRowCursorCore(IEnumerable <DataViewSchema.Column> columnsNeeded, Random rand = null)
 {
     if (_transform == null)
     {
         lock (_lock)
             if (_transform == null)
             {
                 _transform = CreateTemplatedTransform();
             }
     }
     Host.AssertValue(_transform, "_transform");
     Host.AssertValue(_trend, "_trend");
     return(_transform.GetRowCursor(columnsNeeded, rand));
 }

示例#4

 protected override RowCursor GetRowCursorCore(Func <int, bool> needCol, Random rand = null)
 {
     if (_transform == null)
     {
         lock (_lock)
             if (_transform == null)
             {
                 _transform = CreateTemplatedTransform();
             }
     }
     Host.AssertValue(_transform, "_transform");
     Host.AssertValue(_trend, "_trend");
     return(_transform.GetRowCursor(needCol, rand));
 }

示例#5

 public RowCursor GetRowCursor(Func <int, bool> predicate, Random rand = null)
 {
     // Fun part we'll see later.
     _host.AssertValue(_transform, "_transform");
     return(_transform.GetRowCursor(predicate, rand));
 }

示例#6

 protected override IRowCursor GetRowCursorCore(Func <int, bool> predicate, IRandom rand = null)
 {
     Host.AssertValue(_pipedTransform, "_pipedTransform");
     return(_pipedTransform.GetRowCursor(predicate, rand));
 }

示例#7

文件： SplitTrainTestTransform.cs 项目： sdpython/machinelearningext

 protected override DataViewRowCursor GetRowCursorCore(IEnumerable <DataViewSchema.Column> columnsNeeded, Random rand = null)
 {
     Host.AssertValue(_pipedTransform, "_pipedTransform");
     return(_pipedTransform.GetRowCursor(columnsNeeded, rand));
 }

示例#8

文件： SequentialTransformerBase.cs 项目： thomshib/machinelearning

            protected override IRowCursor GetRowCursorCore(Func <int, bool> predicate, IRandom rand = null)
            {
                var srcCursor = _transform.GetRowCursor(predicate, rand);

                return(new Cursor(Host, this, srcCursor));
            }

示例#9

文件： ULabelToR4LabelTransform.cs 项目： sdpython/machinelearningext

 public DataViewRowCursor GetRowCursor(IEnumerable <DataViewSchema.Column> columnsNeeded, Random rand = null)
 {
     // Fun part we'll see later.
     _host.AssertValue(_transform, "_transform");
     return(_transform.GetRowCursor(columnsNeeded, rand));
 }