public Mapper(OnnxTransformer parent, DataViewSchema inputSchema) :
base(Contracts.CheckRef(parent, nameof(parent)).Host.Register(nameof(Mapper)), inputSchema, parent)
{
_parent = parent;
_inputColIndices = new int[_parent.Inputs.Length];
_inputTensorShapes = new OnnxShape[_parent.Inputs.Length];
_inputOnnxTypes = new Type[_parent.Inputs.Length];
var model = _parent.Model;
for (int i = 0; i < _parent.Inputs.Length; i++)
{
var inputNodeInfo = model.ModelInfo.GetInput(_parent.Inputs[i]);
var shape = inputNodeInfo.Shape;
var inputShape = AdjustDimensions(inputNodeInfo.Shape);
_inputTensorShapes[i] = inputShape.ToList();
_inputOnnxTypes[i] = inputNodeInfo.TypeInOnnxRuntime;
var col = inputSchema.GetColumnOrNull(_parent.Inputs[i]);
if (!col.HasValue)
{
throw Host.ExceptSchemaMismatch(nameof(inputSchema), "input", _parent.Inputs[i]);
}
_inputColIndices[i] = col.Value.Index;
var type = inputSchema[_inputColIndices[i]].Type;
var vectorType = type as VectorDataViewType;
if (vectorType != null && vectorType.Size == 0)
{
throw Host.Except($"Variable length input columns not supported");
}
if (type.GetItemType() != inputNodeInfo.DataViewType.GetItemType())
{
// If the ONNX model input node expects a type that mismatches with the type of the input IDataView column that is provided
// then throw an exception.
// This is done except in the case where the ONNX model input node expects a UInt32 but the input column is actually KeyDataViewType
// This is done to support a corner case originated in NimbusML. For more info, see: https://github.com/microsoft/NimbusML/issues/426
if (!(type.GetItemType() is KeyDataViewType && inputNodeInfo.DataViewType.GetItemType().RawType == typeof(UInt32)))
{
throw Host.ExceptSchemaMismatch(nameof(inputSchema), "input", _parent.Inputs[i], inputNodeInfo.DataViewType.GetItemType().ToString(), type.ToString());
}
}
// If the column is one dimension we make sure that the total size of the Onnx shape matches.
// Compute the total size of the known dimensions of the shape.
int valCount = inputShape.Where(x => x > 0).Aggregate((x, y) => x * y);
// The column length should be divisible by this, so that the other dimensions can be integral.
int typeValueCount = type.GetValueCount();
if (typeValueCount % valCount != 0)
{
throw Contracts.Except($"Input shape mismatch: Input '{_parent.Inputs[i]}' has shape {String.Join(",", inputShape)}, but input data is of length {typeValueCount}.");
}
}
}
public Mapper(OnnxTransformer parent, DataViewSchema inputSchema) :
base(Contracts.CheckRef(parent, nameof(parent)).Host.Register(nameof(Mapper)), inputSchema, parent)
{
_parent = parent;
_inputColIndices = new int[_parent.Inputs.Length];
_inputTensorShapes = new OnnxShape[_parent.Inputs.Length];
_inputOnnxTypes = new Type[_parent.Inputs.Length];
var model = _parent.Model;
for (int i = 0; i < _parent.Inputs.Length; i++)
{
var inputNodeInfo = model.ModelInfo.GetInput(_parent.Inputs[i]);
var shape = inputNodeInfo.Shape;
var inputShape = AdjustDimensions(inputNodeInfo.Shape);
_inputTensorShapes[i] = inputShape.ToList();
_inputOnnxTypes[i] = inputNodeInfo.TypeInOnnxRuntime;
var col = inputSchema.GetColumnOrNull(_parent.Inputs[i]);
if (!col.HasValue)
{
throw Host.ExceptSchemaMismatch(nameof(inputSchema), "input", _parent.Inputs[i]);
}
_inputColIndices[i] = col.Value.Index;
var type = inputSchema[_inputColIndices[i]].Type;
var vectorType = type as VectorDataViewType;
if (vectorType != null && vectorType.Size == 0)
{
throw Host.Except($"Variable length input columns not supported");
}
if (type.GetItemType() != inputNodeInfo.DataViewType.GetItemType())
{
throw Host.ExceptSchemaMismatch(nameof(inputSchema), "input", _parent.Inputs[i], inputNodeInfo.DataViewType.GetItemType().ToString(), type.ToString());
}
// If the column is one dimension we make sure that the total size of the Onnx shape matches.
// Compute the total size of the known dimensions of the shape.
int valCount = inputShape.Where(x => x > 0).Aggregate((x, y) => x * y);
// The column length should be divisible by this, so that the other dimensions can be integral.
int typeValueCount = type.GetValueCount();
if (typeValueCount % valCount != 0)
{
throw Contracts.Except($"Input shape mismatch: Input '{_parent.Inputs[i]}' has shape {String.Join(",", inputShape)}, but input data is of length {typeValueCount}.");
}
}
}
