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- /*
- * Copyright (c) 2021, Jan de Visser <jan@de-visser.net>
- *
- * SPDX-License-Identifier: BSD-2-Clause
- */
- #pragma once
- #include <AK/ByteBuffer.h>
- #include <AK/RefPtr.h>
- #include <LibSQL/Forward.h>
- #include <LibSQL/Meta.h>
- #include <LibSQL/Value.h>
- namespace SQL {
- /**
- * A Tuple is an element of a sequential-access persistence data structure
- * like a flat table. Like a key it has a definition for all its parts,
- * but unlike a key this definition is not optional.
- *
- * FIXME Tuples should logically belong to a TupleStore object, but right now
- * they stand by themselves; they contain a row's worth of data and a pointer
- * to the next Tuple.
- */
- class Row : public Tuple {
- public:
- Row();
- explicit Row(TupleDescriptor const&);
- explicit Row(RefPtr<TableDef>, u32 pointer = 0);
- Row(RefPtr<TableDef>, u32, Serializer&);
- Row(Row const&) = default;
- virtual ~Row() override = default;
- [[nodiscard]] u32 next_pointer() const { return m_next_pointer; }
- void next_pointer(u32 ptr) { m_next_pointer = ptr; }
- RefPtr<TableDef> table() const { return m_table; }
- [[nodiscard]] virtual size_t length() const override { return Tuple::length() + sizeof(u32); }
- virtual void serialize(Serializer&) const override;
- virtual void deserialize(Serializer&) override;
- protected:
- void copy_from(Row const&);
- private:
- RefPtr<TableDef> m_table;
- u32 m_next_pointer { 0 };
- };
- }
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