Allow adding sellers during sale phase

src/core/database.cpp

@@ -186,6 +186,8 @@ void Database::beginTransaction() { exec("BEGIN TRANSACTION"); }
 
 void Database::endTransaction() { exec("END TRANSACTION"); }
 
+void Database::rollbackTransaction() { exec("ROLLBACK TRANSACTION"); }
+
 unsigned int Database::storeSellers(std::vector<std::unique_ptr<Seller>>& sellers, bool onlyDelete)
 {
     int retCode{};
@@ -221,10 +223,10 @@ unsigned int Database::storeSellers(std::vector<std::unique_ptr<Seller>>& seller
             retCode = sqlite3_step(stmt);
 
             if (retCode != SQLITE_DONE) {
-
+                rollbackTransaction();
                 std::string errMsg(sqlite3_errmsg(db_));
                 sqlite3_finalize(stmt);
-                throw std::runtime_error(errMsg);
+                sqlite3_ throw std::runtime_error(errMsg);
             }
             ++count;
             sqlite3_finalize(stmt);

src/core/database.h

@@ -31,6 +31,7 @@ class Database
     void init();
     void beginTransaction();
     void endTransaction();
+    void rollbackTransaction();
     void createNew();
     int getVersion();
     unsigned int storeArticles(std::vector<Article*> articles);