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/*
* Copyright (c) 2021, Jan de Visser <jan@de-visser.net>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/RefPtr.h>
#include <AK/String.h>
#include <LibCore/Object.h>
#include <LibSQL/Forward.h>
#include <LibSQL/Heap.h>
#include <LibSQL/Meta.h>
namespace SQL {
/**
* A Database object logically connects a Heap with the SQL data we want
* to store in it. It has BTree pointers for B-Trees holding the definitions
* of tables, columns, indexes, and other SQL objects.
*/
class Database : public Core::Object {
C_OBJECT(Database);
public:
explicit Database(String);
~Database() override = default;
void commit() { m_heap->flush(); }
void add_schema(SchemaDef const&);
static Key get_schema_key(String const&);
RefPtr<SchemaDef> get_schema(String const&);
void add_table(TableDef& table);
static Key get_table_key(String const&, String const&);
RefPtr<TableDef> get_table(String const&, String const&);
Vector<Row> select_all(TableDef const&);
Vector<Row> match(TableDef const&, Key const&);
bool insert(Row&);
bool update(Row&);
private:
NonnullRefPtr<Heap> m_heap;
Serializer m_serializer;
RefPtr<BTree> m_schemas;
RefPtr<BTree> m_tables;
RefPtr<BTree> m_table_columns;
HashMap<u32, RefPtr<SchemaDef>> m_schema_cache;
HashMap<u32, RefPtr<TableDef>> m_table_cache;
};
}
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