private IReadOnlyList <IArrowArray> InitializeFields()
{
IArrowArray[] result = new IArrowArray[Data.Children.Length];
for (int i = 0; i < Data.Children.Length; i++)
{
result[i] = ArrowArrayFactory.BuildArray(Data.Children[i]);
}
return(result);
}
public Array Slice(int offset, int length)
{
if (offset > Length)
{
throw new ArgumentException($"Offset {offset} cannot be greater than Length {Length} for Array.Slice");
}
length = Math.Min(Data.Length - offset, length);
offset += Data.Offset;
ArrayData newData = Data.Slice(offset, length);
return(ArrowArrayFactory.BuildArray(newData) as Array);
}
public DictionaryArray(ArrayData data) : base(data)
{
data.EnsureBufferCount(2);
data.EnsureDataType(ArrowTypeId.Dictionary);
if (data.Dictionary == null)
{
throw new ArgumentException($"{nameof(data.Dictionary)} must not be null");
}
var dicType = (DictionaryType)data.DataType;
data.Dictionary.EnsureDataType(dicType.ValueType.TypeId);
var indicesData = new ArrayData(dicType.IndexType, data.Length, data.NullCount, data.Offset, data.Buffers, data.Children);
Indices = ArrowArrayFactory.BuildArray(indicesData);
Dictionary = ArrowArrayFactory.BuildArray(data.Dictionary);
}
internal static IArrowArray Concatenate(IReadOnlyList <IArrowArray> arrowArrayList, MemoryAllocator allocator = default)
{
if (arrowArrayList == null || arrowArrayList.Count == 0)
{
return(null);
}
if (arrowArrayList.Count == 1)
{
return(arrowArrayList[0]);
}
var arrayDataList = new List <ArrayData>(arrowArrayList.Count);
foreach (IArrowArray array in arrowArrayList)
{
arrayDataList.Add(array.Data);
}
return(ArrowArrayFactory.BuildArray(ArrayDataConcatenator.Concatenate(arrayDataList, allocator)));
}
public ListArray(ArrayData data)
: this(data, ArrowArrayFactory.BuildArray(data.Children[0]))
{
}
