Files
scylladb/mutation_query.cc
Botond Dénes 35e6cbf42e mutation_query: reconcilable_result: add merge_disjoint()
Merging two disjoint reconcilable_result instances.
2024-02-21 02:08:48 -05:00

79 lines
2.8 KiB
C++

/*
* Copyright (C) 2015-present ScyllaDB
*/
/*
* SPDX-License-Identifier: AGPL-3.0-or-later
*/
#include "mutation_query.hh"
reconcilable_result::~reconcilable_result() {}
reconcilable_result::reconcilable_result()
: _row_count_low_bits(0)
, _row_count_high_bits(0)
{ }
reconcilable_result::reconcilable_result(uint32_t row_count_low_bits, utils::chunked_vector<partition> p, query::short_read short_read,
uint32_t row_count_high_bits, query::result_memory_tracker memory_tracker)
: _row_count_low_bits(row_count_low_bits)
, _short_read(short_read)
, _memory_tracker(std::move(memory_tracker))
, _partitions(std::move(p))
, _row_count_high_bits(row_count_high_bits)
{ }
reconcilable_result::reconcilable_result(uint64_t row_count, utils::chunked_vector<partition> p, query::short_read short_read,
query::result_memory_tracker memory_tracker)
: reconcilable_result(static_cast<uint32_t>(row_count), std::move(p), short_read, static_cast<uint32_t>(row_count >> 32), std::move(memory_tracker))
{ }
const utils::chunked_vector<partition>& reconcilable_result::partitions() const {
return _partitions;
}
utils::chunked_vector<partition>& reconcilable_result::partitions() {
return _partitions;
}
bool
reconcilable_result::operator==(const reconcilable_result& other) const {
return boost::equal(_partitions, other._partitions);
}
void
reconcilable_result::merge_disjoint(schema_ptr schema, const reconcilable_result& other) {
std::copy(other._partitions.begin(), other._partitions.end(), std::back_inserter(_partitions));
_short_read = _short_read || other._short_read;
uint64_t row_count = this->row_count() + other.row_count();
_row_count_low_bits = static_cast<uint32_t>(row_count);
_row_count_high_bits = static_cast<uint32_t>(row_count >> 32);
}
auto fmt::formatter<reconcilable_result::printer>::format(
const reconcilable_result::printer& pr,
fmt::format_context& ctx) const -> decltype(ctx.out()) {
auto out = ctx.out();
out = fmt::format_to(out,
"{{rows={}, short_read={}, ",
pr.self.row_count(),
pr.self.is_short_read());
bool first = true;
for (const partition& p : pr.self.partitions()) {
if (!first) {
out = fmt::format_to(out, ", ");
}
first = false;
out = fmt::format_to(out,
"{{rows={}, {}}}",
p.row_count(),
p._m.pretty_printer(pr.schema));
}
return fmt::format_to(out, "]}}");
}
reconcilable_result::printer reconcilable_result::pretty_printer(schema_ptr s) const {
return { *this, std::move(s) };
}