From 5b76e52cd4a8dec4490f773537b9623280cd1518 Mon Sep 17 00:00:00 2001
From: Derek Christ <derek.christ@uni-wuerzburg.de>
Date: Wed, 26 Feb 2025 09:28:36 +0100
Subject: [PATCH] Do not create empty database file when it does not exist

---
 src/traceAnalyzer/data/tracedb.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/traceAnalyzer/data/tracedb.cpp b/src/traceAnalyzer/data/tracedb.cpp
index c2de993e..0dedea8c 100644
--- a/src/traceAnalyzer/data/tracedb.cpp
+++ b/src/traceAnalyzer/data/tracedb.cpp
@@ -47,6 +47,7 @@
 #include <QStringList>
 #include <QTextStream>
 #include <iostream>
+#include <filesystem>
 
 // define symbol printqueries if all queries should be printed to the console
 // #define printqueries
@@ -55,6 +56,9 @@ TraceDB::TraceDB(const QString& path, bool openExisting)
 {
     this->pathToDB = path;
 
+    if (!std::filesystem::exists(path.toStdString()))
+        throw std::runtime_error("Database file does not exist!");
+
     database = QSqlDatabase::database(path);
     if (database.isValid() && database.isOpen())
     {