Method executeImpl

src/Functions/array/arrayReverse.cpp:58–103

ColumnPtr FunctionArrayReverse::executeImpl(const ColumnsWithTypeAndName & arguments, const DataTypePtr &, size_t) const
{
    const ColumnArray * array = checkAndGetColumn<ColumnArray>(arguments[0].column.get());
    if (!array)
        throw Exception(ErrorCodes::ILLEGAL_COLUMN, "Illegal column {} of first argument of function {}",
            arguments[0].column->getName(), getName());

    auto res_ptr = array->cloneEmpty();
    ColumnArray & res = assert_cast<ColumnArray &>(*res_ptr);
    res.getOffsetsPtr() = array->getOffsetsPtr();

    const IColumn & src_data = array->getData();
    const ColumnArray::Offsets & offsets = array->getOffsets();

    IColumn & res_data = res.getData();

    const ColumnNullable * src_nullable_col = typeid_cast<const ColumnNullable *>(&src_data);
    ColumnNullable * res_nullable_col = typeid_cast<ColumnNullable *>(&res_data);

    const IColumn * src_inner_col = src_nullable_col ? &src_nullable_col->getNestedColumn() : &src_data;
    IColumn * res_inner_col = res_nullable_col ? &res_nullable_col->getNestedColumn() : &res_data;

    false // NOLINT
        || executeNumber<UInt8>(*src_inner_col, offsets, *res_inner_col)
        || executeNumber<UInt16>(*src_inner_col, offsets, *res_inner_col)
        || executeNumber<UInt32>(*src_inner_col, offsets, *res_inner_col)
        || executeNumber<UInt64>(*src_inner_col, offsets, *res_inner_col)
        || executeNumber<Int8>(*src_inner_col, offsets, *res_inner_col)
        || executeNumber<Int16>(*src_inner_col, offsets, *res_inner_col)
        || executeNumber<Int32>(*src_inner_col, offsets, *res_inner_col)
        || executeNumber<Int64>(*src_inner_col, offsets, *res_inner_col)
        || executeNumber<Float32>(*src_inner_col, offsets, *res_inner_col)
        || executeNumber<Float64>(*src_inner_col, offsets, *res_inner_col)
        || executeString(*src_inner_col, offsets, *res_inner_col)
        || executeFixedString(*src_inner_col, offsets, *res_inner_col)
        || executeGeneric(*src_inner_col, offsets, *res_inner_col);

    chassert(bool(src_nullable_col) == bool(res_nullable_col));

    if (src_nullable_col)
        if (!executeNumber<UInt8>(src_nullable_col->getNullMapColumn(), offsets, res_nullable_col->getNullMapColumn()))
            throw Exception(ErrorCodes::ILLEGAL_COLUMN, "Illegal column {} of null map of the first argument of function {}",
                src_nullable_col->getNullMapColumn().getName(), getName());

    return res_ptr;
}


bool FunctionArrayReverse::executeGeneric(const IColumn & src_data, const ColumnArray::Offsets & src_array_offsets, IColumn & res_data)