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7af95e7f22
- Facetable and Rankable fields must be defined upfront during collection creation - During query time, specific rank and facet fields can be mentioned but they should belong to the set declared previously
53 lines
1.6 KiB
C++
53 lines
1.6 KiB
C++
#pragma once
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#include <iostream>
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#include <string>
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#include <sparsepp.h>
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#include "store.h"
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#include "field.h"
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#include "collection.h"
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// Singleton, for managing meta information of all collections and house keeping
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class CollectionManager {
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private:
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Store *store;
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spp::sparse_hash_map<std::string, Collection*> collections;
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// Auto incrementing ID assigned to each collection
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// Using a ID instead of a collection's name makes renaming possible
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uint32_t next_collection_id;
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static constexpr const char* COLLECTION_NAME_KEY = "name";
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static constexpr const char* COLLECTION_ID_KEY = "id";
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static constexpr const char* COLLECTION_SEARCH_FIELDS_KEY = "search_fields";
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static constexpr const char* COLLECTION_FACET_FIELDS_KEY = "facet_fields";
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static constexpr const char* COLLECTION_RANK_FIELDS_KEY = "rank_fields";
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CollectionManager();
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public:
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static CollectionManager& get_instance() {
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static CollectionManager instance;
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return instance;
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}
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~CollectionManager();
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CollectionManager(CollectionManager const&) = delete;
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void operator=(CollectionManager const&) = delete;
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void init(Store *store);
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Collection* create_collection(std::string name, const std::vector<field> & search_fields,
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const std::vector<field> & facet_fields,
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const std::vector<std::string> & rank_fields);
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Collection* get_collection(std::string collection_name);
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bool drop_collection(std::string collection_name);
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uint32_t get_next_collection_id();
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static constexpr const char* NEXT_COLLECTION_ID_KEY = "$CI";
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}; |