void TEditor::clipPaste()
{
if( (clipboard != 0) && (clipboard != this) )
insertFrom(clipboard);
}
void FunctionArrayReduce::executeImpl(Block & block, const ColumnNumbers & arguments, size_t result, size_t input_rows_count)
{
IAggregateFunction & agg_func = *aggregate_function.get();
AlignedBuffer place_holder(agg_func.sizeOfData(), agg_func.alignOfData());
AggregateDataPtr place = place_holder.data();
std::unique_ptr<Arena> arena = agg_func.allocatesMemoryInArena() ? std::make_unique<Arena>() : nullptr;
size_t rows = input_rows_count;
/// Aggregate functions do not support constant columns. Therefore, we materialize them.
std::vector<ColumnPtr> materialized_columns;
const size_t num_arguments_columns = arguments.size() - 1;
std::vector<const IColumn *> aggregate_arguments_vec(num_arguments_columns);
const ColumnArray::Offsets * offsets = nullptr;
for (size_t i = 0; i < num_arguments_columns; ++i)
{
const IColumn * col = block.getByPosition(arguments[i + 1]).column.get();
const ColumnArray::Offsets * offsets_i = nullptr;
if (const ColumnArray * arr = checkAndGetColumn<ColumnArray>(col))
{
aggregate_arguments_vec[i] = &arr->getData();
offsets_i = &arr->getOffsets();
}
else if (const ColumnConst * const_arr = checkAndGetColumnConst<ColumnArray>(col))
{
materialized_columns.emplace_back(const_arr->convertToFullColumn());
const auto & arr = typeid_cast<const ColumnArray &>(*materialized_columns.back().get());
aggregate_arguments_vec[i] = &arr.getData();
offsets_i = &arr.getOffsets();
}
else
throw Exception("Illegal column " + col->getName() + " as argument of function " + getName(), ErrorCodes::ILLEGAL_COLUMN);
if (i == 0)
offsets = offsets_i;
else if (*offsets_i != *offsets)
throw Exception("Lengths of all arrays passed to " + getName() + " must be equal.",
ErrorCodes::SIZES_OF_ARRAYS_DOESNT_MATCH);
}
const IColumn ** aggregate_arguments = aggregate_arguments_vec.data();
MutableColumnPtr result_holder = block.getByPosition(result).type->createColumn();
IColumn & res_col = *result_holder;
/// AggregateFunction's states should be inserted into column using specific way
auto res_col_aggregate_function = typeid_cast<ColumnAggregateFunction *>(&res_col);
if (!res_col_aggregate_function && agg_func.isState())
throw Exception("State function " + agg_func.getName() + " inserts results into non-state column "
+ block.getByPosition(result).type->getName(), ErrorCodes::ILLEGAL_COLUMN);
ColumnArray::Offset current_offset = 0;
for (size_t i = 0; i < rows; ++i)
{
agg_func.create(place);
ColumnArray::Offset next_offset = (*offsets)[i];
try
{
for (size_t j = current_offset; j < next_offset; ++j)
agg_func.add(place, aggregate_arguments, j, arena.get());
if (!res_col_aggregate_function)
agg_func.insertResultInto(place, res_col);
else
res_col_aggregate_function->insertFrom(place);
}
catch (...)
{
agg_func.destroy(place);
throw;
}
agg_func.destroy(place);
current_offset = next_offset;
}
block.getByPosition(result).column = std::move(result_holder);
}
