85 lines
1.8 KiB
C++
85 lines
1.8 KiB
C++
#pragma once
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#include <database/select_query.hpp>
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#include <database/type_to_sql.hpp>
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#include <logger/logger.hpp>
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#include <database/row.hpp>
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#include <algorithm>
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#include <string>
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template <typename... T>
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class Table
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{
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static_assert(sizeof...(T) > 0, "Table cannot be empty");
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using ColumnTypes = std::tuple<T...>;
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public:
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using RowType = Row<T...>;
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Table(std::string name):
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name(std::move(name))
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{}
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void create(sqlite3* db)
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{
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std::string res{"CREATE TABLE IF NOT EXISTS "};
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res += this->name;
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res += " (\n";
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this->add_column_create(res);
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res += ")";
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log_debug(res);
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char* error;
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const auto result = sqlite3_exec(db, res.data(), nullptr, nullptr, &error);
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log_debug("result: ", +result);
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if (result != SQLITE_OK)
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{
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log_error("Error executing query: ", error);
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sqlite3_free(error);
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}
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}
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RowType row()
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{
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return {this->name};
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}
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SelectQuery<T...> select()
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{
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SelectQuery<T...> select(this->name);
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return select;
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}
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const std::string& get_name() const
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{
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return this->name;
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}
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private:
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template <std::size_t N=0>
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typename std::enable_if<N < sizeof...(T), void>::type
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add_column_create(std::string& str)
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{
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using ColumnType = typename std::remove_reference<decltype(std::get<N>(std::declval<ColumnTypes>()))>::type;
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using RealType = typename ColumnType::real_type;
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str += ColumnType::name;
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str += " ";
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str += TypeToSQLType<RealType>::type;
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str += " "s + ColumnType::options;
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if (N != sizeof...(T) - 1)
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str += ",";
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str += "\n";
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add_column_create<N+1>(str);
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}
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template <std::size_t N=0>
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typename std::enable_if<N == sizeof...(T), void>::type
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add_column_create(std::string&)
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{ }
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const std::string name;
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};
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