From 881cf7420dccf3c43837390efa9cded7b24836a2 Mon Sep 17 00:00:00 2001
From: azv <azv@opencascade.com>
Date: Thu, 24 Nov 2016 08:28:48 +0300
Subject: [PATCH] Workaround for Debian 6.0 (issues #1868 and #1878)
 Correction.

---
 src/Model/Model_Session.cpp              | 19 +++++++++++++++++++
 src/Model/Model_Session.h                |  3 +++
 src/ModelAPI/ModelAPI_Session.h          |  3 +++
 src/PythonAPI/model/sketcher/__init__.py |  8 ++------
 4 files changed, 27 insertions(+), 6 deletions(-)

diff --git a/src/Model/Model_Session.cpp b/src/Model/Model_Session.cpp
index 790664f05..a68d98b0c 100644
--- a/src/Model/Model_Session.cpp
+++ b/src/Model/Model_Session.cpp
@@ -472,3 +472,22 @@ int Model_Session::transactionID()
 {
   return ROOT_DOC->transactionID();
 }
+
+void Model_Session::forceLoadPlugin(const std::string& thePluginName)
+{
+  // load all information about plugins, features and attributes
+  LoadPluginsInfo();
+
+  // store name of current plugin for further restoring,
+  // because forceLoadPlugin may be called while loading another plugin
+  std::string aCurrentPluginName = myCurrentPluginName;
+
+  myCurrentPluginName = thePluginName;
+  if (myPluginObjs.find(myCurrentPluginName) == myPluginObjs.end()) {
+    // load plugin library if not yet done
+    Config_ModuleReader::loadPlugin(myCurrentPluginName);
+  }
+
+  // restore current plugin
+  myCurrentPluginName = aCurrentPluginName;
+}
diff --git a/src/Model/Model_Session.h b/src/Model/Model_Session.h
index 2afa84a26..d9f9f2c2d 100644
--- a/src/Model/Model_Session.h
+++ b/src/Model/Model_Session.h
@@ -128,6 +128,9 @@ class Model_Session : public ModelAPI_Session, public Events_Listener
   /// Returns the global identifier of the current transaction (needed for the update algo)
   MODEL_EXPORT virtual int transactionID();
 
+  /// Load plugin by its name
+  MODEL_EXPORT virtual void forceLoadPlugin(const std::string& thePluginName);
+
  protected:
   /// Loads (if not done yet) the information about the features and plugins
   void LoadPluginsInfo();
diff --git a/src/ModelAPI/ModelAPI_Session.h b/src/ModelAPI/ModelAPI_Session.h
index 40984fb03..cc6987bd3 100644
--- a/src/ModelAPI/ModelAPI_Session.h
+++ b/src/ModelAPI/ModelAPI_Session.h
@@ -115,6 +115,9 @@ class MODELAPI_EXPORT ModelAPI_Session
   /// Returns the global identifier of the current transaction (needed for the update algo)
   virtual int transactionID() = 0;
 
+  /// Load plugin by its name
+  virtual void forceLoadPlugin(const std::string& thePluginName) = 0;
+
  protected:
   /// Sets the session interface implementation (once per application launch)
   static void setSession(std::shared_ptr<ModelAPI_Session> theManager);
diff --git a/src/PythonAPI/model/sketcher/__init__.py b/src/PythonAPI/model/sketcher/__init__.py
index 2edb1d226..9231f5d32 100644
--- a/src/PythonAPI/model/sketcher/__init__.py
+++ b/src/PythonAPI/model/sketcher/__init__.py
@@ -7,13 +7,9 @@
   It is kept, because SketchPlugin should be loaded before SketchAPI is first used.
   Otherwise, the runtime error will be generated while some static inline methods are broken.
 """ 
-from ModelAPI import *
+from ModelAPI import ModelAPI_Session
 aSession = ModelAPI_Session.get()
-aDocument = aSession.moduleDocument()
-aSession.startOperation()
-aDocument.addFeature("Sketch")
-aSession.finishOperation()
-aSession.abortOperation()
+aSession.forceLoadPlugin("SketchPlugin")
 # DEBIAN 6.0 WORKAROUND FINISH
 
 from SketchAPI import addSketch
-- 
2.30.2