searchlib/src/vespa/searchlib/attribute/iterator_pack.cpp


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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.

#include "iterator_pack.h"
#include <vespa/searchlib/common/bitvector.h>

namespace search {

AttributeIteratorPack::~AttributeIteratorPack() = default;

AttributeIteratorPack::AttributeIteratorPack(std::vector<DocumentWeightIterator> &&children)
    : _children(std::move(children))
{
    assert(_children.size() < 0x10000);
}

std::unique_ptr<BitVector>
AttributeIteratorPack::get_hits(uint32_t begin_id, uint32_t end_id) {
    BitVector::UP result(BitVector::create(begin_id, end_id));
    or_hits_into(*result, begin_id);
    return result;
}

void
AttributeIteratorPack::or_hits_into(BitVector &result, uint32_t begin_id) {
    for (size_t i = 0; i < size(); ++i) {
        uint32_t docId = get_docid(i);
        if (begin_id > docId) {
            docId = seek(i, begin_id);
        }
        for (uint32_t limit = result.size(); docId < limit; docId = next(i)) {
            result.setBit(docId);
        }
    }
    result.invalidateCachedCount();
}


}