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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 "i_field_index_collection.h"
#include "i_field_index.h"
#include <memory>
#include <vector>
namespace search::index {
class IFieldLengthInspector;
class Schema;
}
namespace search::memoryindex {
class IFieldIndexRemoveListener;
class FieldInverter;
/**
* The collection of all field indexes that are part of a memory index.
*
* Provides functions to create a posting list iterator (used for searching)
* for a given word in a given field.
*/
class FieldIndexCollection : public IFieldIndexCollection {
private:
using GenerationHandler = vespalib::GenerationHandler;
std::vector<std::unique_ptr<IFieldIndex>> _fieldIndexes;
const uint32_t _numFields;
public:
FieldIndexCollection(const index::Schema& schema, const index::IFieldLengthInspector& inspector);
~FieldIndexCollection() override;
uint64_t getNumUniqueWords() const {
uint64_t numUniqueWords = 0;
for (auto &fieldIndex : _fieldIndexes) {
numUniqueWords += fieldIndex->getNumUniqueWords();
}
return numUniqueWords;
}
void dump(search::index::IndexBuilder & indexBuilder);
vespalib::MemoryUsage getMemoryUsage() const;
IFieldIndex *getFieldIndex(uint32_t fieldId) const {
return _fieldIndexes[fieldId].get();
}
const std::vector<std::unique_ptr<IFieldIndex>> &getFieldIndexes() const { return _fieldIndexes; }
uint32_t getNumFields() const { return _numFields; }
FieldIndexRemover &get_remover(uint32_t field_id) override;
IOrderedFieldIndexInserter &get_inserter(uint32_t field_id) override;
index::FieldLengthCalculator &get_calculator(uint32_t field_id) override;
};
}
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