# HG changeset patch
# User Sebastien Jodogne <s.jodogne@gmail.com>
# Date 1617028760 -7200
# Node ID 492aa3edf5727d95607be98b0e01e7a7925ae595
# Parent  dd6cfc25074744f106de4c04efb35deff433a133
use read-only, explicit transaction in IndexBackend::GetDatabaseVersion()

diff -r dd6cfc250747 -r 492aa3edf572 Framework/Plugins/IndexBackend.cpp
--- a/Framework/Plugins/IndexBackend.cpp	Mon Mar 29 14:52:55 2021 +0200
+++ b/Framework/Plugins/IndexBackend.cpp	Mon Mar 29 16:39:20 2021 +0200
@@ -1439,6 +1439,11 @@
     
   uint32_t IndexBackend::GetDatabaseVersion()
   {
+    // Create a read-only, explicit transaction to read the database
+    // version (this was a read-write, implicit transaction in
+    // PostgreSQL plugin <= 3.3 and MySQL plugin <= 3.0)
+    DatabaseManager::Transaction transaction(GetManager(), TransactionType_ReadOnly);
+    
     std::string version = "unknown";
       
     if (LookupGlobalProperty(version, Orthanc::GlobalProperty_DatabaseSchemaVersion))