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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include <vespa/searchcommon/attribute/i_multi_value_read_view.h>
#include <vespa/vespalib/stllike/allocator.h>
namespace search::attribute {
/**
* Read view for the data stored in an extendable multi-value string
* array attribute vector (used by streaming visitor) that handles
* optional addition of weight.
* @tparam MultiValueType The multi-value type of the data to access.
*/
template <typename MultiValueType>
class ExtendableStringArrayMultiValueReadView : public attribute::IMultiValueReadView<MultiValueType>
{
using Offsets = std::vector<uint32_t, vespalib::allocator_large<uint32_t>>;
const std::vector<char>& _buffer;
const Offsets & _offsets;
const std::vector<uint32_t>& _idx;
mutable std::vector<MultiValueType> _copy;
public:
ExtendableStringArrayMultiValueReadView(const std::vector<char>& buffer, const Offsets & offsets, const std::vector<uint32_t>& idx);
~ExtendableStringArrayMultiValueReadView() override;
vespalib::ConstArrayRef<MultiValueType> get_values(uint32_t doc_id) const override;
};
}
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