//TODO method should go to helper module or VectorModule
//TODO probably not very efficient
public static IVector <object> BoxVector(IVector vector, IVectorBuilder vectorBuilder)
{
switch (Type.GetTypeCode(vector.ElementType))
{
//TODO implement conversions for all types
case TypeCode.String:
var strVec = (IVector <string>)vector;
var boxedVals = strVec.Data.Values.Select(v => (object)v).ToArray();
var boxedVec = vectorBuilder.Create <object>(boxedVals);
return(boxedVec);
case TypeCode.Int32:
var intVec = (IVector <int>)vector;
var boxedValsInt = intVec.Data.Values.Select(v => (object)v).ToArray();
var boxedVecInt = vectorBuilder.Create <object>(boxedValsInt);
return(boxedVecInt);
case TypeCode.DateTime:
var dtVec = (IVector <DateTime>)vector;
var boxedValsDt = dtVec.Data.Values.Select(v => (object)v).ToArray();
var boxedVecDt = vectorBuilder.Create <object>(boxedValsDt);
return(boxedVecDt);
default:
return(null);
}
}
//TODO unsafe
public static IVector <T> unboxVector <T>(IVector <object> vector, IVectorBuilder vectorBuilder)
{
var unboxedVals = vector.Data.Values.Select(v => (T)v).ToArray();
var unboxedVec = vectorBuilder.Create <T>(unboxedVals);
return(unboxedVec);
}
public IVector <T> Build <T>(IVecConstructionCmd vectorConstruction, IVector <T>[] vectors)
{
if (vectorConstruction.GetType() == typeof(Return))
{
var vcReturn = (Return)vectorConstruction;
return(vectors[vcReturn.VectorLocation]);
}
else if (vectorConstruction.GetType() == typeof(Combine))
{
var combine = (Combine)vectorConstruction;
var data = combine.VecConstructionCmds.Select(vc => (IVector)VectorBuilderInstance.Build(vc, vectors)).ToArray();
var frameData = VectorBuilderInstance.Create(data);
var rowReaders = new object[combine.Size];
for (long i = 0; i < combine.Size; i++)
{
rowReaders[i] = new RowReaderVector <object>(frameData, VectorBuilderInstance, i);
}
var objVec = new ArrayVector <object>(new ArrayVectorData <object>(rowReaders));
//var objectSeq = new ObjectSequence<T>(objVec);
return(Vector.unboxVector <T>(objVec, VectorBuilderInstance));
}
else if (vectorConstruction.GetType() == typeof(GetRange))
{
var cmd = (GetRange)vectorConstruction;
//TODO
var range = (IntervalOf <Int64>)cmd.RangeBoundary;
var newVecData = this.buildArrayVector(cmd.VecConstructionCmd, vectors);
var newData = new T[(range.End - range.Start + 1)];
long idx = 0;
for (long i = range.Start; i <= range.End; i++)
{
newData[idx] = newVecData[i];
idx++;
}
return(new ArrayVector <T>(new ArrayVectorData <T>(newData)));
}
else
{
return(null);
}
}