--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/OrthancServer/Sources/Database/Compatibility/IGetChildrenMetadata.cpp	Wed Jun 10 20:30:34 2020 +0200
@@ -0,0 +1,66 @@
+/**
+ * Orthanc - A Lightweight, RESTful DICOM Store
+ * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
+ * Department, University Hospital of Liege, Belgium
+ * Copyright (C) 2017-2020 Osimis S.A., Belgium
+ *
+ * This program is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * In addition, as a special exception, the copyright holders of this
+ * program give permission to link the code of its release with the
+ * OpenSSL project's "OpenSSL" library (or with modified versions of it
+ * that use the same license as the "OpenSSL" library), and distribute
+ * the linked executables. You must obey the GNU General Public License
+ * in all respects for all of the code used other than "OpenSSL". If you
+ * modify file(s) with this exception, you may extend this exception to
+ * your version of the file(s), but you are not obligated to do so. If
+ * you do not wish to do so, delete this exception statement from your
+ * version. If you delete this exception statement from all source files
+ * in the program, then also delete it here.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ **/
+
+
+#include "../../PrecompiledHeadersServer.h"
+#include "IGetChildrenMetadata.h"
+
+namespace Orthanc
+{
+  namespace Compatibility
+  {
+    void IGetChildrenMetadata::Apply(IGetChildrenMetadata& database,
+                                     std::list<std::string>& target,
+                                     int64_t resourceId,
+                                     MetadataType metadata)
+    {
+      // This function comes from an optimization of
+      // "ServerIndex::GetSeriesStatus()" in Orthanc <= 1.5.1
+      // Loop over the instances of this series
+
+      target.clear();
+      
+      std::list<int64_t> children;
+      database.GetChildrenInternalId(children, resourceId);
+
+      for (std::list<int64_t>::const_iterator 
+             it = children.begin(); it != children.end(); ++it)
+      {
+        std::string value;
+        if (database.LookupMetadata(value, *it, metadata))
+        {
+          target.push_back(value);
+        }
+      }
+    }
+  }
+}