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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "groupinglevel.h"
#include "grouping.h"
#include <vespa/searchlib/expression/resultvector.h>
#include <vespa/searchlib/expression/current_index_setup.h>
namespace search::aggregation {
using expression::ResultNodeVector;
using vespalib::Serializer;
using vespalib::Deserializer;
IMPLEMENT_IDENTIFIABLE_NS2(search, aggregation, GroupingLevel, vespalib::Identifiable);
GroupingLevel::GroupingLevel() noexcept
: _maxGroups(-1),
_precision(-1),
_isOrdered(false),
_frozen(false),
_currentIndex(),
_classify(),
_collect(),
_grouper(nullptr)
{ }
GroupingLevel::~GroupingLevel() = default;
GroupingLevel::GroupingLevel(const GroupingLevel &) = default;
GroupingLevel::GroupingLevel(GroupingLevel&&) noexcept = default;
GroupingLevel & GroupingLevel::operator =(const GroupingLevel &) = default;
GroupingLevel& GroupingLevel::operator=(GroupingLevel&&) noexcept = default;
Serializer &
GroupingLevel::onSerialize(Serializer & os) const
{
return os << _maxGroups << _precision << _classify << _collect;
}
Deserializer &
GroupingLevel::onDeserialize(Deserializer & is)
{
return is >> _maxGroups >> _precision >> _classify >> _collect;
}
void
GroupingLevel::visitMembers(vespalib::ObjectVisitor &visitor) const
{
visit(visitor, "maxGroups", _maxGroups);
visit(visitor, "precision", _precision);
visit(visitor, "classify", _classify);
visit(visitor, "collect", _collect);
}
void
GroupingLevel::selectMembers(const vespalib::ObjectPredicate & predicate, vespalib::ObjectOperation & operation)
{
_classify.select(predicate, operation);
_collect.select(predicate, operation);
}
GroupingLevel::Grouper::Grouper(const Grouping * grouping, uint32_t level) noexcept
: _grouping(grouping),
_level(level),
_frozen(_level < _grouping->getFirstLevel()),
_hasNext(_level < _grouping->getLevels().size()),
_doNext(_level < _grouping->getLastLevel())
{
}
bool
GroupingLevel::Grouper::hasNext(size_t level) const noexcept
{
return level < _grouping->getLevels().size();
}
template<typename Doc>
void
GroupingLevel::SingleValueGrouper::groupDoc(Group & g, const ResultNode & result, const Doc & doc, HitRank rank) const
{
Group * next = g.groupSingle(result, rank, _grouping->getLevels()[_level]);
if ((next != nullptr) && doNext()) { // do next level ?
next->aggregate(*_grouping, _level + 1, doc, rank);
}
}
template<typename Doc>
void
GroupingLevel::MultiValueGrouper::groupDoc(Group & g, const ResultNode & result, const Doc & doc, HitRank rank) const
{
const ResultNodeVector & rv(static_cast<const ResultNodeVector &>(result));
for (size_t i(0), m(rv.size()); i < m; i++) {
const ResultNode & sr(rv.get(i));
_currentIndex->set(i);
SingleValueGrouper::groupDoc(g, sr, doc, rank);
}
}
void
GroupingLevel::wire_current_index(CurrentIndexSetup &setup, const vespalib::ObjectPredicate &resolve_pred, vespalib::ObjectOperation &resolve_op)
{
CurrentIndexSetup::Usage usage;
{
CurrentIndexSetup::Usage::Bind capture_guard(setup, usage);
_classify.select(resolve_pred, resolve_op);
}
if (usage.has_single_unbound_struct()) {
setup.bind(usage.get_unbound_struct_name(), _currentIndex);
}
_collect.select(resolve_pred, resolve_op);
}
void
GroupingLevel::prepare(const Grouping * grouping, uint32_t level, bool isOrdered_)
{
_isOrdered = isOrdered_;
_frozen = level < grouping->getFirstLevel();
if (_classify.getResult()->inherits(ResultNodeVector::classId)) {
_grouper.reset(new MultiValueGrouper(&_currentIndex, grouping, level));
} else {
_grouper.reset(new SingleValueGrouper(grouping, level));
}
}
// template<> void GroupingLevel::MultiValueGrouper::groupDoc(Group & g, const ResultNode::CP & result, const document::Document & doc, HitRank rank, bool isOrdered) const;
// template<> void GroupingLevel::MultiValueGrouper::groupDoc(Group & g, const ResultNode::CP & result, DocId doc, HitRank rank, bool isOrdered) const;
}
// this function was added by ../../forcelink.sh
void forcelink_file_searchlib_aggregation_groupinglevel() {}
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