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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include <cstdint>
#include <vespa/vespalib/stllike/string.h>
#include <vespa/searchlib/index/field_length_info.h>
namespace search::index {
class PostingListParams;
class Schema;
}
namespace vespalib { class GenericHeader; }
namespace search::bitcompression {
class PosOccFieldParams
{
public:
using PostingListParams = index::PostingListParams;
using Schema = index::Schema;
enum CollectionType
{
SINGLE,
ARRAY,
WEIGHTEDSET
};
uint8_t _elemLenK;
bool _hasElements;
bool _hasElementWeights;
uint32_t _avgElemLen;
CollectionType _collectionType;
vespalib::string _name;
index::FieldLengthInfo _field_length_info;
PosOccFieldParams();
bool operator==(const PosOccFieldParams &rhs) const;
static vespalib::string getParamsPrefix(uint32_t idx);
void getParams(PostingListParams ¶ms, uint32_t idx) const;
void setParams(const PostingListParams ¶ms, uint32_t idx);
void setSchemaParams(const Schema &schema, uint32_t fieldId);
void readHeader(const vespalib::GenericHeader &header, const vespalib::string &prefix);
void writeHeader(vespalib::GenericHeader &header, const vespalib::string &prefix) const;
const index::FieldLengthInfo &get_field_length_info() const { return _field_length_info; }
void set_field_length_info(const index::FieldLengthInfo &field_length_info) { _field_length_info = field_length_info; }
};
}
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