1 files changed, 41 insertions, 0 deletions
diff --git a/src/database/engine.hpp b/src/database/engine.hpp
new file mode 100644
index 0000000..41dccf5
--- /dev/null
+++ b/src/database/engine.hpp
@@ -0,0 +1,41 @@
+#pragma once
+
+/**
+ * Interface to provide non-portable behaviour, specific to each
+ * database engine we want to support.
+ *
+ * Everything else (all portable stuf) should go outside of this class.
+ */
+
+#include <database/statement.hpp>
+
+#include <memory>
+#include <string>
+#include <vector>
+#include <tuple>
+#include <set>
+
+class DatabaseEngine
+{
+ public:
+
+  DatabaseEngine() = default;
+  virtual ~DatabaseEngine() = default;
+
+  DatabaseEngine(const DatabaseEngine&) = delete;
+  DatabaseEngine& operator=(const DatabaseEngine&) = delete;
+  DatabaseEngine(DatabaseEngine&&) = delete;
+  DatabaseEngine& operator=(DatabaseEngine&&) = delete;
+
+  virtual std::set<std::string> get_all_columns_from_table(const std::string& table_name) = 0;
+  virtual std::tuple<bool, std::string> raw_exec(const std::string& query) = 0;
+  virtual std::unique_ptr<Statement> prepare(const std::string& query) = 0;
+  virtual void extract_last_insert_rowid(Statement& statement) = 0;
+  virtual std::string get_returning_id_sql_string(const std::string&)
+  {
+    return {};
+  }
+  virtual std::string id_column_type() = 0;
+
+  int64_t last_inserted_rowid{-1};
+};