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authorlouiz <louiz@louiz.org>2017-06-14 11:11:17 +0200
committerlouiz <louiz@louiz.org>2017-06-14 11:11:17 +0200
commit5ba66c33519567f9f4e806a9ab41c3c94d93237f (patch)
tree4b51bece4f4dec660e0c48297404a5da51aee4ec /src/database/table.hpp
parentceb496369f834ffa055eb5b7ffc273b2a21f9b9a (diff)
parent2677ac42e8d2e1cf162fec773a9acb453bef8b9b (diff)
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Merge branch 'orm' into 'master'
Pure c++ sqlite3 ORM Closes #3271 See merge request !11
Diffstat (limited to 'src/database/table.hpp')
-rw-r--r--src/database/table.hpp84
1 files changed, 84 insertions, 0 deletions
diff --git a/src/database/table.hpp b/src/database/table.hpp
new file mode 100644
index 0000000..163b97f
--- /dev/null
+++ b/src/database/table.hpp
@@ -0,0 +1,84 @@
+#pragma once
+
+#include <database/select_query.hpp>
+#include <database/type_to_sql.hpp>
+#include <logger/logger.hpp>
+#include <database/row.hpp>
+
+#include <algorithm>
+#include <string>
+
+template <typename... T>
+class Table
+{
+ static_assert(sizeof...(T) > 0, "Table cannot be empty");
+ using ColumnTypes = std::tuple<T...>;
+
+ public:
+ using RowType = Row<T...>;
+
+ Table(std::string name):
+ name(std::move(name))
+ {}
+
+ void create(sqlite3* db)
+ {
+ std::string res{"CREATE TABLE IF NOT EXISTS "};
+ res += this->name;
+ res += " (\n";
+ this->add_column_create<0>(res);
+ res += ")";
+
+ log_debug(res);
+
+ char* error;
+ const auto result = sqlite3_exec(db, res.data(), nullptr, nullptr, &error);
+ log_debug("result: ", +result);
+ if (result != SQLITE_OK)
+ {
+ log_error("Error executing query: ", error);
+ sqlite3_free(error);
+ }
+ }
+
+ RowType row()
+ {
+ return {this->name};
+ }
+
+ SelectQuery<T...> select()
+ {
+ SelectQuery<T...> select(this->name);
+ return select;
+ }
+
+ const std::string& get_name() const
+ {
+ return this->name;
+ }
+
+ private:
+ template <std::size_t N>
+ typename std::enable_if<N < sizeof...(T), void>::type
+ add_column_create(std::string& str)
+ {
+ using ColumnType = typename std::remove_reference<decltype(std::get<N>(std::declval<ColumnTypes>()))>::type;
+ using RealType = typename ColumnType::real_type;
+ str += ColumnType::name;
+ str += " ";
+ str += TypeToSQLType<RealType>::type;
+ str += " "s + ColumnType::options;
+ if (N != sizeof...(T) - 1)
+ str += ",";
+ str += "\n";
+
+ add_column_create<N+1>(str);
+ }
+
+ template <std::size_t N>
+ typename std::enable_if<N == sizeof...(T), void>::type
+ add_column_create(std::string&)
+ { }
+
+ const std::string name;
+};