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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "elementiterator.h"
#include <vespa/searchlib/fef/termfieldmatchdata.h>
#include <vespa/vespalib/objects/objectvisitor.h>
namespace search::queryeval {
void
ElementIterator::visitMembers(vespalib::ObjectVisitor &visitor) const {
visit(visitor, "iterator", _search.get());
}
ElementIteratorWrapper::ElementIteratorWrapper(SearchIterator::UP search, fef::TermFieldMatchData & tfmd)
: ElementIterator(std::move(search)),
_tfmd(tfmd)
{}
ElementIteratorWrapper::~ElementIteratorWrapper() = default;
void
ElementIteratorWrapper::getElementIds(uint32_t docId, std::vector<uint32_t> & elementIds) {
_search->unpack(docId);
int prevId(-1);
for (auto element : _tfmd) {
uint32_t id(element.getElementId());
if (prevId != int(id)) {
elementIds.push_back(id);
prevId = id;
}
}
}
void
ElementIteratorWrapper::mergeElementIds(uint32_t docId, std::vector<uint32_t> & elementIds) {
_search->unpack(docId);
size_t toKeep(0);
int32_t id(-1);
auto it = _tfmd.begin();
for (int32_t candidate : elementIds) {
if (candidate > id) {
while ((it < _tfmd.end()) && (candidate > int(it->getElementId()))) {
it++;
}
if (it == _tfmd.end()) break;
id = it->getElementId();
}
if (id == candidate) {
elementIds[toKeep++] = candidate;
}
}
elementIds.resize(toKeep);
}
}
void visit(vespalib::ObjectVisitor &self, const vespalib::string &name,
const search::queryeval::ElementIterator *obj)
{
if (obj != 0) {
self.openStruct(name, "ElementIterator");
obj->visitMembers(self);
self.closeStruct();
} else {
self.visitNull(name);
}
}
void visit(vespalib::ObjectVisitor &self, const vespalib::string &name,
const search::queryeval::ElementIterator &obj)
{
visit(self, name, &obj);
}
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