--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Framework/Loaders/LoaderCache.h	Wed Jul 24 14:27:06 2019 +0200
@@ -0,0 +1,80 @@
+/**
+ * Stone of Orthanc
+ * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
+ * Department, University Hospital of Liege, Belgium
+ * Copyright (C) 2017-2019 Osimis S.A., Belgium
+ *
+ * This program is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU Affero General Public License
+ * as published by the Free Software Foundation, either version 3 of
+ * the License, or (at your option) any later version.
+ *
+ * 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
+ * Affero General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ **/
+
+#pragma once
+
+#include <boost/shared_ptr.hpp>
+
+#include <map>
+#include <string>
+
+namespace OrthancStone
+{
+  class OrthancSeriesVolumeProgressiveLoader;
+  class DicomVolumeImageMPRSlicer;
+  class DicomStructureSetLoader;
+  class OrthancMultiframeVolumeLoader;
+  class IOracle;
+
+#if ORTHANC_ENABLE_WASM == 1
+  //class WebAssemblyOracle;
+#else
+  //class ThreadedOracle;
+  class LockingEmitter;
+#endif
+
+  class LoaderCache
+  {
+  public:
+#if ORTHANC_ENABLE_WASM == 1
+    LoaderCache(IOracle& oracle);
+#else
+    LoaderCache(IOracle& oracle, LockingEmitter& lockingEmitter);
+#endif
+
+    boost::shared_ptr<OrthancSeriesVolumeProgressiveLoader>
+      GetSeriesVolumeProgressiveLoader      (std::string seriesUuid);
+    boost::shared_ptr<DicomVolumeImageMPRSlicer>
+      GetMultiframeDicomVolumeImageMPRSlicer(std::string instanceUuid);
+    boost::shared_ptr<DicomStructureSetLoader>
+      GetDicomStructureSetLoader            (std::string instanceUuid);
+
+    void ClearCache();
+
+  private:
+    IOracle& oracle_;
+#if ORTHANC_ENABLE_WASM == 1
+    //WebAssemblyOracle& oracle_;
+#else
+    //ThreadedOracle& oracle_;
+    LockingEmitter& lockingEmitter_;
+#endif
+
+    std::map<std::string, boost::shared_ptr<OrthancSeriesVolumeProgressiveLoader> >
+      seriesVolumeProgressiveLoaders_;
+    std::map<std::string, boost::shared_ptr<OrthancMultiframeVolumeLoader> >
+      multiframeVolumeLoaders_;
+    std::map<std::string, boost::shared_ptr<DicomVolumeImageMPRSlicer> >
+      dicomVolumeImageMPRSlicers_;
+    std::map<std::string, boost::shared_ptr<DicomStructureSetLoader> >
+      dicomStructureSetLoaders_;
+  };
+}
+