0026961: Recover possibility to read files in old persistence format -- preparation

[occt.git] / src / StdLPersistent / StdLPersistent_PDocStd_Document.cxx

diff --git a/src/StdLPersistent/StdLPersistent_PDocStd_Document.cxx b/src/StdLPersistent/StdLPersistent_PDocStd_Document.cxx
new file mode 100644 (file)
index 0000000..cee3e24
--- /dev/null
+++ b/src/StdLPersistent/StdLPersistent_PDocStd_Document.cxx
@@ -0,0 +1,44 @@
+// Copyright (c) 2015 OPEN CASCADE SAS
+//
+// This file is part of Open CASCADE Technology software library.
+//
+// This library is free software; you can redistribute it and/or modify it under
+// the terms of the GNU Lesser General Public License version 2.1 as published
+// by the Free Software Foundation, with special exception defined in the file
+// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
+// distribution for complete text of the license and disclaimer of any warranty.
+//
+// Alternatively, this file may be used under the terms of Open CASCADE
+// commercial license or contractual agreement.
+
+#include <StdLPersistent_PDocStd_Document.hxx>
+#include <StdLPersistent_PDF_Data.hxx>
+
+#include <StdObjMgt_ReadData.hxx>
+
+#include <TDocStd_Document.hxx>
+#include <TDocStd_Owner.hxx>
+
+//=======================================================================
+//function : Read
+//purpose  : Read persistent data from a file
+//=======================================================================
+void StdLPersistent_PDocStd_Document::Read (StdObjMgt_ReadData& theReadData)
+{
+  theReadData >> myData;
+}
+
+//=======================================================================
+//function : Import
+//purpose  : Import transient document from the persistent data
+//=======================================================================
+void StdLPersistent_PDocStd_Document::Import (const Handle(CDM_Document)& theDocument) const
+{
+  Handle(TDocStd_Document) aDocument = Handle(TDocStd_Document)::DownCast (theDocument);
+  if (aDocument.IsNull() || myData.IsNull())
+    return;
+
+  Handle(TDF_Data) aData = myData->Import();
+  aDocument->SetData (aData);
+  TDocStd_Owner::SetDocument (aData, aDocument);
+}