70 lines
2.6 KiB
C++
70 lines
2.6 KiB
C++
/*------------------------------------------------------------------------------*
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* Architecture & Implementation of DBMS *
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*------------------------------------------------------------------------------*
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* Copyright 2022 Databases and Information Systems Group TU Dortmund *
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* Visit us at *
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* http://dbis.cs.tu-dortmund.de/cms/en/home/ *
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* *
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, *
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL *
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR *
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, *
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR *
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* OTHER DEALINGS IN THE SOFTWARE. *
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* *
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* Authors: *
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* Maximilian Berens <maximilian.berens@tu-dortmund.de> *
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* Roland Kühn <roland.kuehn@cs.tu-dortmund.de> *
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* Jan Mühlig <jan.muehlig@tu-dortmund.de> *
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*------------------------------------------------------------------------------*
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*/
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#pragma once
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#include <storage/page.h>
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namespace beedb::index
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{
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/**
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* The index interface offers an API for multiple indices, whether
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* they are range-indices, support multiple values for one key.
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*/
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class IndexInterface
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{
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public:
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explicit IndexInterface(const std::string &name) : _name(name)
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{
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}
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virtual ~IndexInterface() = default;
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/**
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* @return True, if the index supports just one value per key.
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*/
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[[nodiscard]] virtual bool is_unique() const = 0;
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/**
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* @return True, if the index supports range queries (like B+Trees).
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*/
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[[nodiscard]] virtual bool supports_range() const = 0;
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/**
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* Stores a (Key,Page) pair in the index.
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*
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* @param key Key for lookups.
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* @param page_id Value.
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*/
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virtual void put(const std::int64_t key, storage::Page::id_t page_id) = 0;
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/**
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* @return Name of the index.
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*/
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[[nodiscard]] const std::string &name() const
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{
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return _name;
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}
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private:
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const std::string _name;
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};
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} // namespace beedb::index
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