54 lines
1.6 KiB
C++
54 lines
1.6 KiB
C++
#pragma once
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#include "storage/type_group_edge.hpp"
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#include "storage/type_group_vertex.hpp"
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#include "snapshot/snapshot_engine.hpp"
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#include "storage/garbage/garbage.hpp"
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#include "storage/graph.hpp"
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#include "transactions/engine.hpp"
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class Indexes;
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// Main class which represents Database concept in code.
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// TODO: Maybe split this in another layer between Db and Dbms. Where the new
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// layer would hold SnapshotEngine and his kind of concept objects. Some
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// guidelines would be: retain objects which are necessary to implement querys
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// in Db, the rest can be moved to the new layer.
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class Db
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{
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public:
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using sptr = std::shared_ptr<Db>;
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// import_snapshot will in constructor import latest snapshot into the db.
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// NOTE: explicit is here to prevent compiler from evaluating const char *
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// into a bool.
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explicit Db(bool import_snapshot = true);
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// import_snapshot will in constructor import latest snapshot into the db.
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Db(const char *name, bool import_snapshot = true);
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// import_snapshot will in constructor import latest snapshot into the db.
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Db(const std::string &name, bool import_snapshot = true);
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Db(const Db &db) = delete;
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private:
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const std::string name_;
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public:
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tx::Engine tx_engine;
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Graph graph;
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Garbage garbage = {tx_engine};
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// This must be initialized after name.
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SnapshotEngine snap_engine = {*this};
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// Creates Indexes for this db.
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// TODO: Indexes should be created only once somwhere Like Db or layer
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// between Db and Dbms.
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Indexes indexes();
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std::string const &name() const;
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};
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