--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/OrthancServer/QueryRetrieveHandler.cpp	Tue May 26 17:54:34 2015 +0200
@@ -0,0 +1,132 @@
+/**
+ * Orthanc - A Lightweight, RESTful DICOM Store
+ * Copyright (C) 2012-2015 Sebastien Jodogne, Medical Physics
+ * Department, University Hospital of Liege, 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 "QueryRetrieveHandler.h"
+
+#include "OrthancInitialization.h"
+
+
+namespace Orthanc
+{
+  void QueryRetrieveHandler::Invalidate()
+  {
+    done_ = false;
+    answers_.Clear();
+  }
+
+
+  void QueryRetrieveHandler::Run()
+  {
+    if (!done_)
+    {
+      ReusableDicomUserConnection::Locker locker(context_.GetReusableDicomUserConnection(), modality_);
+      locker.GetConnection().Find(answers_, level_, query_);
+      done_ = true;
+    }
+  }
+
+
+  QueryRetrieveHandler::QueryRetrieveHandler(ServerContext& context) : 
+    context_(context),
+    done_(false),
+    level_(ResourceType_Study)
+  {
+  }
+
+
+  void QueryRetrieveHandler::SetModality(const std::string& symbolicName)
+  {
+    Invalidate();
+    modalityName_ = symbolicName;
+    Configuration::GetDicomModalityUsingSymbolicName(modality_, symbolicName);
+  }
+
+
+  void QueryRetrieveHandler::SetLevel(ResourceType level)
+  {
+    Invalidate();
+    level_ = level;
+  }
+
+
+  void QueryRetrieveHandler::SetQuery(const DicomTag& tag,
+                                      const std::string& value)
+  {
+    Invalidate();
+    query_.SetValue(tag, value);
+  }
+
+
+  size_t QueryRetrieveHandler::GetAnswerCount()
+  {
+    Run();
+    return answers_.GetSize();
+  }
+
+
+  const DicomMap& QueryRetrieveHandler::GetAnswer(size_t i)
+  {
+    Run();
+
+    if (i >= answers_.GetSize())
+    {
+      throw OrthancException(ErrorCode_ParameterOutOfRange);
+    }
+
+    return answers_.GetAnswer(i);
+  }
+
+
+  void QueryRetrieveHandler::Retrieve(const std::string& target,
+                                      size_t i)
+  {
+    Run();
+
+    if (i >= answers_.GetSize())
+    {
+      throw OrthancException(ErrorCode_ParameterOutOfRange);
+    }
+
+    ReusableDicomUserConnection::Locker locker(context_.GetReusableDicomUserConnection(), modality_);
+    locker.GetConnection().Move(target, answers_.GetAnswer(i));
+  }
+
+
+  void QueryRetrieveHandler::Retrieve(const std::string& target)
+  {
+    for (size_t i = 0; i < GetAnswerCount(); i++)
+    {
+      Retrieve(target, i);
+    }
+  }
+}