From 8659818a30bb5c3a54fc6d5601201ac1bba0646c Mon Sep 17 00:00:00 2001
From: Arin Alexander <arin_a@bk.ru>
Date: Sat, 11 Feb 2017 00:24:59 +0300
Subject: [PATCH] Connection will be restored if server is gone away or drop
 limereport connection

---
 limereport/lrdatasourcemanager.cpp | 10 +++++++++-
 limereport/lrdatasourcemanager.h   |  2 +-
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/limereport/lrdatasourcemanager.cpp b/limereport/lrdatasourcemanager.cpp
index bab241d..2fb0d40 100644
--- a/limereport/lrdatasourcemanager.cpp
+++ b/limereport/lrdatasourcemanager.cpp
@@ -735,6 +735,11 @@ void DataSourceManager::setReportSettings(ReportSettings *reportSettings)
     m_reportSettings = reportSettings;
 }
 
+bool DataSourceManager::checkConnection(QSqlDatabase db){
+    QSqlQuery query("Select 1",db);
+    return query.first();
+}
+
 bool DataSourceManager::connectConnection(ConnectionDesc *connectionDesc)
 {
 
@@ -759,7 +764,10 @@ bool DataSourceManager::connectConnection(ConnectionDesc *connectionDesc)
             db.close();
             connected = initAndOpenDB(db, *connectionDesc);
         } else {
-            connected = db.isOpen();
+            //connected = db.isOpen();
+            connected = checkConnection(db);
+            if (!connected)
+                connected = initAndOpenDB(db, *connectionDesc);
         }
     }
 
diff --git a/limereport/lrdatasourcemanager.h b/limereport/lrdatasourcemanager.h
index 7670b2e..a0efaaf 100644
--- a/limereport/lrdatasourcemanager.h
+++ b/limereport/lrdatasourcemanager.h
@@ -221,7 +221,7 @@ protected:
     void setSystemVariable(const QString& name, const QVariant& value, RenderPass pass);
     void setLastError(const QString& value);
     void invalidateLinkedDatasources(QString datasourceName);
-
+    bool checkConnection(QSqlDatabase db);
 private slots:
     void slotConnectionRenamed(const QString& oldName,const QString& newName);
     void slotQueryTextChanged(const QString& queryName, const QString& queryText);