1 // SMESH SMESHGUI : GUI for SMESH component
3 // Copyright (C) 2003 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
4 // CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
6 // This library is free software; you can redistribute it and/or
7 // modify it under the terms of the GNU Lesser General Public
8 // License as published by the Free Software Foundation; either
9 // version 2.1 of the License.
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 // Lesser General Public License for more details.
16 // You should have received a copy of the GNU Lesser General Public
17 // License along with this library; if not, write to the Free Software
18 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 // See http://www.opencascade.org/SALOME/ or email : webmaster.salome@opencascade.org
24 // File : SMESH_Swig.cxx
25 // Author : Nicolas REJNERI
30 #include "SMESHGUI_Swig.hxx"
32 #include "Utils_ORB_INIT.hxx"
33 #include "Utils_SINGLETON.hxx"
36 #include <SMESHGUI_GEOMGenUtils.h>
39 #include "SUIT_ResourceMgr.h"
40 #include "SUIT_Session.h"
42 #include "SalomeApp_Application.h"
44 #include "utilities.h"
46 // Open CASCADE Includes
50 #include <SALOMEconfig.h>
51 #include CORBA_SERVER_HEADER(SMESH_Gen)
52 #include CORBA_SERVER_HEADER(SMESH_Mesh)
53 #include CORBA_SERVER_HEADER(SMESH_Hypothesis)
55 static CORBA::ORB_var _orb;
57 static char* ObjectToString (CORBA::Object_ptr obj)
59 return _orb->object_to_string(obj);
62 static CORBA::Object_ptr StringToObject (const char* ior)
64 return _orb->string_to_object(ior);
67 SMESH_Swig::SMESH_Swig()
69 MESSAGE("Constructeur");
73 void SMESH_Swig::Init(int studyID)
76 SMESH::SMESH_Gen_var CompMesh = SMESHGUI::GetSMESHGen();
77 GEOM::GEOM_Gen_var CompGeom = SMESH::GetGEOMGen();
79 SUIT_ResourceMgr* resMgr = SMESHGUI::resourceMgr();
81 resMgr->loadLanguage( QString::null, "en" );
83 if (!resMgr->loadResources( "SMESH", msg ))
87 SalomeApp_Application* app = dynamic_cast<SalomeApp_Application*>( SUIT_Session::session()->activeApplication() );
91 CORBA::Object_var obj = app->namingService()->Resolve("/myStudyManager");
92 SALOMEDS::StudyManager_var myStudyMgr = SALOMEDS::StudyManager::_narrow(obj);
93 myStudy = myStudyMgr->GetStudyByID(studyID);
95 CompMesh->SetCurrentStudy( myStudy.in() );
97 myStudyBuilder = myStudy->NewBuilder();
98 SALOMEDS::GenericAttribute_var anAttr;
99 SALOMEDS::AttributeName_var aName;
100 SALOMEDS::AttributePixMap_var aPixmap;
102 // See return value of SMESH::SMESH_Gen::ComponentDataType()
103 SALOMEDS::SComponent_var father = myStudy->FindComponent("SMESH");
105 if (father->_is_nil()) {
106 bool aLocked = myStudy->GetProperties()->IsLocked();
107 if (aLocked) myStudy->GetProperties()->SetLocked(false);
108 father = myStudyBuilder->NewComponent("SMESH");
109 anAttr = myStudyBuilder->FindOrCreateAttribute(father, "AttributeName");
110 aName = SALOMEDS::AttributeName::_narrow(anAttr);
111 //NRI aName->SetValue(QObject::tr("SMESH_MEN_COMPONENT"));
112 aName->SetValue( SMESHGUI::GetSMESHGUI()->moduleName() );
113 anAttr = myStudyBuilder->FindOrCreateAttribute(father, "AttributePixMap");
114 aPixmap = SALOMEDS::AttributePixMap::_narrow(anAttr);
115 aPixmap->SetPixMap( "ICON_OBJBROWSER_SMESH" );
116 myStudyBuilder->DefineComponentInstance(father, CompMesh );
117 if (aLocked) myStudy->GetProperties()->SetLocked(true);
119 mySComponentMesh = SALOMEDS::SComponent::_narrow( father );
122 Tag_HypothesisRoot = 1;
123 Tag_AlgorithmsRoot = 2;
126 Tag_RefOnAppliedHypothesis = 2;
127 Tag_RefOnAppliedAlgorithms = 3;
129 Tag_SubMeshOnVertex = 4;
130 Tag_SubMeshOnEdge = 5;
131 Tag_SubMeshOnFace = 6;
132 Tag_SubMeshOnSolid = 7;
133 Tag_SubMeshOnCompound = 8;
136 SMESH_Swig::~SMESH_Swig()
138 MESSAGE("Destructeur");
142 const char* SMESH_Swig::AddNewMesh(const char* IOR)
144 MESSAGE("AddNewMesh");
146 // VSR: added temporarily - to be removed - objects are published automatically by engine
147 SALOMEDS::SObject_var SO = myStudy->FindObjectIOR( IOR );
148 if ( !SO->_is_nil() )
151 //Find or Create Hypothesis root
152 SALOMEDS::GenericAttribute_var anAttr;
153 SALOMEDS::AttributeName_var aName;
154 SALOMEDS::AttributeIOR_var anIOR;
155 SALOMEDS::AttributeSelectable_var aSelAttr;
156 SALOMEDS::AttributePixMap_var aPixmap;
158 SALOMEDS::SObject_var HypothesisRoot;
159 if (!mySComponentMesh->FindSubObject (Tag_HypothesisRoot, HypothesisRoot)) {
160 HypothesisRoot = myStudyBuilder->NewObjectToTag (mySComponentMesh, Tag_HypothesisRoot);
161 anAttr = myStudyBuilder->FindOrCreateAttribute(HypothesisRoot, "AttributeName");
162 aName = SALOMEDS::AttributeName::_narrow(anAttr);
163 aName->SetValue(QObject::tr("SMESH_MEN_HYPOTHESIS"));
164 anAttr = myStudyBuilder->FindOrCreateAttribute(HypothesisRoot, "AttributePixMap");
165 aPixmap = SALOMEDS::AttributePixMap::_narrow(anAttr);
166 aPixmap->SetPixMap( "ICON_SMESH_TREE_HYPO" );
167 anAttr = myStudyBuilder->FindOrCreateAttribute(HypothesisRoot, "AttributeSelectable");
168 aSelAttr = SALOMEDS::AttributeSelectable::_narrow(anAttr);
169 aSelAttr->SetSelectable(false);
172 SALOMEDS::SObject_var AlgorithmsRoot;
173 if (!mySComponentMesh->FindSubObject (Tag_AlgorithmsRoot, AlgorithmsRoot)) {
174 AlgorithmsRoot = myStudyBuilder->NewObjectToTag (mySComponentMesh, Tag_AlgorithmsRoot);
175 anAttr = myStudyBuilder->FindOrCreateAttribute(AlgorithmsRoot, "AttributeName");
176 aName = SALOMEDS::AttributeName::_narrow(anAttr);
177 aName->SetValue(QObject::tr("SMESH_MEN_ALGORITHMS"));
178 anAttr = myStudyBuilder->FindOrCreateAttribute(AlgorithmsRoot, "AttributePixMap");
179 aPixmap = SALOMEDS::AttributePixMap::_narrow(anAttr);
180 aPixmap->SetPixMap( "ICON_SMESH_TREE_ALGO" );
181 anAttr = myStudyBuilder->FindOrCreateAttribute(AlgorithmsRoot, "AttributeSelectable");
182 aSelAttr = SALOMEDS::AttributeSelectable::_narrow(anAttr);
183 aSelAttr->SetSelectable(false);
187 SALOMEDS::SObject_var newMesh = myStudyBuilder->NewObject(mySComponentMesh);
188 anAttr = myStudyBuilder->FindOrCreateAttribute(newMesh, "AttributePixMap");
189 aPixmap = SALOMEDS::AttributePixMap::_narrow(anAttr);
190 aPixmap->SetPixMap( "ICON_SMESH_TREE_MESH" );
191 anAttr = myStudyBuilder->FindOrCreateAttribute(newMesh, "AttributeIOR");
192 anIOR = SALOMEDS::AttributeIOR::_narrow(anAttr);
193 anIOR->SetValue(IOR);
194 return SALOMEDS::SObject::_narrow( newMesh )->GetID();
197 const char* SMESH_Swig::AddNewHypothesis(const char* IOR)
199 MESSAGE("AddNewHypothesis");
201 // VSR: added temporarily - to be removed - objects are published automatically by engine
202 SALOMEDS::SObject_var SO = myStudy->FindObjectIOR( IOR );
203 if ( !SO->_is_nil() )
206 //Find or Create Hypothesis root
207 SALOMEDS::SObject_var HypothesisRoot;
208 SALOMEDS::GenericAttribute_var anAttr;
209 SALOMEDS::AttributeName_var aName;
210 SALOMEDS::AttributeIOR_var anIOR;
211 SALOMEDS::AttributeSelectable_var aSelAttr;
212 SALOMEDS::AttributePixMap_var aPixmap;
214 if (!mySComponentMesh->FindSubObject (Tag_HypothesisRoot, HypothesisRoot)) {
215 HypothesisRoot = myStudyBuilder->NewObjectToTag (mySComponentMesh, Tag_HypothesisRoot);
216 anAttr = myStudyBuilder->FindOrCreateAttribute(HypothesisRoot, "AttributeName");
217 aName = SALOMEDS::AttributeName::_narrow(anAttr);
218 aName->SetValue(QObject::tr("SMESH_MEN_HYPOTHESIS"));
219 anAttr = myStudyBuilder->FindOrCreateAttribute(HypothesisRoot, "AttributeSelectable");
220 aSelAttr = SALOMEDS::AttributeSelectable::_narrow(anAttr);
221 aSelAttr->SetSelectable(false);
222 anAttr = myStudyBuilder->FindOrCreateAttribute(HypothesisRoot, "AttributePixMap");
223 aPixmap = SALOMEDS::AttributePixMap::_narrow(anAttr);
224 aPixmap->SetPixMap( "ICON_SMESH_TREE_HYPO" );
226 // Add New Hypothesis
227 SALOMEDS::SObject_var newHypo = myStudyBuilder->NewObject(HypothesisRoot);
228 anAttr = myStudyBuilder->FindOrCreateAttribute(newHypo, "AttributePixMap");
229 aPixmap = SALOMEDS::AttributePixMap::_narrow(anAttr);
230 SMESH::SMESH_Hypothesis_var H = SMESH::SMESH_Hypothesis::_narrow( StringToObject(IOR) );
231 QString aType = H->GetName();
232 aPixmap->SetPixMap( "ICON_SMESH_TREE_HYPO_" + aType );
233 // if ( aType.compare("LocalLength") == 0 )
234 // aPixmap->SetPixMap( "ICON_SMESH_TREE_HYPO_LENGTH" );
235 // else if ( aType.compare("NumberOfSegments") == 0 )
236 // aPixmap->SetPixMap( "ICON_SMESH_TREE_HYPO_SEGMENT" );
237 // else if ( aType.compare("MaxElementArea") == 0 )
238 // aPixmap->SetPixMap( "ICON_SMESH_TREE_HYPO_AREA" );
239 // else if ( aType.compare("MaxElementVolume") == 0 )
240 // aPixmap->SetPixMap( "ICON_SMESH_TREE_HYPO_VOLUME" );
241 anAttr = myStudyBuilder->FindOrCreateAttribute(newHypo, "AttributeIOR");
242 anIOR = SALOMEDS::AttributeIOR::_narrow(anAttr);
243 anIOR->SetValue(IOR);
244 return SALOMEDS::SObject::_narrow(newHypo)->GetID();
247 const char* SMESH_Swig::AddNewAlgorithms(const char* IOR)
249 MESSAGE("AddNewAlgorithms");
251 // VSR: added temporarily - to be removed - objects are published automatically by engine
252 SALOMEDS::SObject_var SO = myStudy->FindObjectIOR( IOR );
253 if ( !SO->_is_nil() )
256 //Find or Create Algorithms root
257 SALOMEDS::SObject_var AlgorithmsRoot;
258 SALOMEDS::GenericAttribute_var anAttr;
259 SALOMEDS::AttributeName_var aName;
260 SALOMEDS::AttributeIOR_var anIOR;
261 SALOMEDS::AttributeSelectable_var aSelAttr;
262 SALOMEDS::AttributePixMap_var aPixmap;
264 if (!mySComponentMesh->FindSubObject (Tag_AlgorithmsRoot, AlgorithmsRoot)) {
265 AlgorithmsRoot = myStudyBuilder->NewObjectToTag (mySComponentMesh, Tag_AlgorithmsRoot);
266 anAttr = myStudyBuilder->FindOrCreateAttribute(AlgorithmsRoot, "AttributeName");
267 aName = SALOMEDS::AttributeName::_narrow(anAttr);
268 aName->SetValue(QObject::tr("SMESH_MEN_ALGORITHMS"));
269 anAttr = myStudyBuilder->FindOrCreateAttribute(AlgorithmsRoot, "AttributeSelectable");
270 aSelAttr = SALOMEDS::AttributeSelectable::_narrow(anAttr);
271 aSelAttr->SetSelectable(false);
272 anAttr = myStudyBuilder->FindOrCreateAttribute(AlgorithmsRoot, "AttributePixMap");
273 aPixmap = SALOMEDS::AttributePixMap::_narrow(anAttr);
274 aPixmap->SetPixMap( "ICON_SMESH_TREE_ALGO" );
276 // Add New Algorithms
277 SALOMEDS::SObject_var newHypo = myStudyBuilder->NewObject(AlgorithmsRoot);
278 anAttr = myStudyBuilder->FindOrCreateAttribute(newHypo, "AttributePixMap");
279 aPixmap = SALOMEDS::AttributePixMap::_narrow(anAttr);
280 SMESH::SMESH_Hypothesis_var H = SMESH::SMESH_Hypothesis::_narrow( StringToObject(IOR) );
281 QString aType = H->GetName();
282 aPixmap->SetPixMap( "ICON_SMESH_TREE_ALGO_" + aType );
283 // if ( aType.compare("Regular_1D") == 0 )
284 // aPixmap->SetPixMap( "ICON_SMESH_TREE_ALGO_REGULAR" );
285 // else if ( aType.compare("MEFISTO_2D") == 0 )
286 // aPixmap->SetPixMap( "ICON_SMESH_TREE_ALGO_MEFISTO" );
287 // else if ( aType.compare("Quadrangle_2D") == 0 )
288 // aPixmap->SetPixMap( "ICON_SMESH_TREE_ALGO_QUAD" );
289 // else if ( aType.compare("Hexa_3D") == 0 )
290 // aPixmap->SetPixMap( "ICON_SMESH_TREE_ALGO_HEXA" );
291 anAttr = myStudyBuilder->FindOrCreateAttribute(newHypo, "AttributeIOR");
292 anIOR = SALOMEDS::AttributeIOR::_narrow(anAttr);
293 anIOR->SetValue(IOR);
294 return SALOMEDS::SObject::_narrow(newHypo)->GetID();
297 void SMESH_Swig::SetShape(const char* ShapeEntry, const char* MeshEntry)
299 SALOMEDS::SObject_var SO_MorSM = myStudy->FindObjectID( MeshEntry );
300 SALOMEDS::SObject_var SO_GeomShape = myStudy->FindObjectID( ShapeEntry );
302 if ( !SO_MorSM->_is_nil() && !SO_GeomShape->_is_nil() ) {
303 SALOMEDS::SObject_var SO = myStudyBuilder->NewObjectToTag (SO_MorSM, Tag_RefOnShape);
304 myStudyBuilder->Addreference (SO,SO_GeomShape);
308 void SMESH_Swig::SetHypothesis(const char* Mesh_Or_SubMesh_Entry, const char* Hypothesis_Entry)
310 SALOMEDS::SObject_var SO_MorSM = myStudy->FindObjectID( Mesh_Or_SubMesh_Entry );
311 SALOMEDS::SObject_var SO_Hypothesis = myStudy->FindObjectID( Hypothesis_Entry );
312 SALOMEDS::GenericAttribute_var anAttr;
313 SALOMEDS::AttributeName_var aName;
314 SALOMEDS::AttributeSelectable_var aSelAttr;
315 SALOMEDS::AttributePixMap_var aPixmap;
317 if ( !SO_MorSM->_is_nil() && !SO_Hypothesis->_is_nil() ) {
319 //Find or Create Applied Hypothesis root
320 SALOMEDS::SObject_var AHR;
321 if (!SO_MorSM->FindSubObject (Tag_RefOnAppliedHypothesis, AHR)) {
322 AHR = myStudyBuilder->NewObjectToTag (SO_MorSM, Tag_RefOnAppliedHypothesis);
323 anAttr = myStudyBuilder->FindOrCreateAttribute(AHR, "AttributeName");
324 aName = SALOMEDS::AttributeName::_narrow(anAttr);
325 aName->SetValue(QObject::tr("SMESH_MEN_APPLIED_HYPOTHESIS"));
326 anAttr = myStudyBuilder->FindOrCreateAttribute(AHR, "AttributeSelectable");
327 aSelAttr = SALOMEDS::AttributeSelectable::_narrow(anAttr);
328 aSelAttr->SetSelectable(false);
329 anAttr = myStudyBuilder->FindOrCreateAttribute(AHR, "AttributePixMap");
330 aPixmap = SALOMEDS::AttributePixMap::_narrow(anAttr);
331 aPixmap->SetPixMap( "ICON_SMESH_TREE_HYPO" );
333 SALOMEDS::SObject_var SO = myStudyBuilder->NewObject(AHR);
334 myStudyBuilder->Addreference (SO,SO_Hypothesis);
337 void SMESH_Swig::SetAlgorithms(const char* Mesh_Or_SubMesh_Entry, const char* Algorithms_Entry)
339 SALOMEDS::SObject_var SO_MorSM = myStudy->FindObjectID( Mesh_Or_SubMesh_Entry );
340 SALOMEDS::SObject_var SO_Algorithms = myStudy->FindObjectID( Algorithms_Entry );
341 SALOMEDS::GenericAttribute_var anAttr;
342 SALOMEDS::AttributeName_var aName;
343 SALOMEDS::AttributeSelectable_var aSelAttr;
344 SALOMEDS::AttributePixMap_var aPixmap;
346 if ( !SO_MorSM->_is_nil() && !SO_Algorithms->_is_nil() ) {
347 //Find or Create Applied Algorithms root
348 SALOMEDS::SObject_var AHR;
349 if (!SO_MorSM->FindSubObject (Tag_RefOnAppliedAlgorithms, AHR)) {
350 AHR = myStudyBuilder->NewObjectToTag (SO_MorSM, Tag_RefOnAppliedAlgorithms);
351 anAttr = myStudyBuilder->FindOrCreateAttribute(AHR, "AttributeName");
352 aName = SALOMEDS::AttributeName::_narrow(anAttr);
353 aName->SetValue(QObject::tr("SMESH_MEN_APPLIED_ALGORIHTMS"));
354 anAttr = myStudyBuilder->FindOrCreateAttribute(AHR, "AttributeSelectable");
355 aSelAttr = SALOMEDS::AttributeSelectable::_narrow(anAttr);
356 aSelAttr->SetSelectable(false);
357 anAttr = myStudyBuilder->FindOrCreateAttribute(AHR, "AttributePixMap");
358 aPixmap = SALOMEDS::AttributePixMap::_narrow(anAttr);
359 aPixmap->SetPixMap( "ICON_SMESH_TREE_ALGO" );
361 SALOMEDS::SObject_var SO = myStudyBuilder->NewObject(AHR);
362 myStudyBuilder->Addreference (SO,SO_Algorithms);
366 void SMESH_Swig::UnSetHypothesis(const char* Applied_Hypothesis_Entry )
368 SALOMEDS::SObject_var SO_Applied_Hypothesis = myStudy->FindObjectID( Applied_Hypothesis_Entry );
369 if ( !SO_Applied_Hypothesis->_is_nil() )
370 myStudyBuilder->RemoveObject(SO_Applied_Hypothesis);
374 const char* SMESH_Swig::AddSubMesh(const char* SO_Mesh_Entry, const char* SM_IOR, int ST)
376 SALOMEDS::SObject_var SO_Mesh = myStudy->FindObjectID( SO_Mesh_Entry );
377 if ( !SO_Mesh->_is_nil() ) {
380 Standard_CString Name;
382 if (ST == TopAbs_SOLID) {Tag_Shape = Tag_SubMeshOnSolid; Name = strdup(QObject::tr("SMESH_MEN_SubMeshesOnSolid"));}
383 else if (ST == TopAbs_FACE) {Tag_Shape = Tag_SubMeshOnFace; Name = strdup(QObject::tr("SMESH_MEN_SubMeshesOnFace"));}
384 else if (ST == TopAbs_EDGE) {Tag_Shape = Tag_SubMeshOnEdge; Name = strdup(QObject::tr("SMESH_MEN_SubMeshesOnEdge"));}
385 else if (ST == TopAbs_VERTEX){Tag_Shape = Tag_SubMeshOnVertex; Name = strdup(QObject::tr("SMESH_MEN_SubMeshesOnVertex"));}
387 Tag_Shape = Tag_SubMeshOnCompound; Name = strdup(QObject::tr("SMESH_MEN_SubMeshesOnCompound"));
389 SALOMEDS::SObject_var SubmeshesRoot;
390 SALOMEDS::GenericAttribute_var anAttr;
391 SALOMEDS::AttributeName_var aName;
392 SALOMEDS::AttributeIOR_var anIOR;
393 SALOMEDS::AttributeSelectable_var aSelAttr;
394 if (!SO_Mesh->FindSubObject (Tag_Shape,SubmeshesRoot )) {
395 SubmeshesRoot = myStudyBuilder->NewObjectToTag (SO_Mesh, Tag_Shape);
396 anAttr = myStudyBuilder->FindOrCreateAttribute(SubmeshesRoot, "AttributeName");
397 aName = SALOMEDS::AttributeName::_narrow(anAttr);
398 aName->SetValue(Name);
399 anAttr = myStudyBuilder->FindOrCreateAttribute(SubmeshesRoot, "AttributeSelectable");
400 aSelAttr = SALOMEDS::AttributeSelectable::_narrow(anAttr);
401 aSelAttr->SetSelectable(false);
406 SALOMEDS::SObject_var SO = myStudyBuilder->NewObject (SubmeshesRoot);
407 anAttr = myStudyBuilder->FindOrCreateAttribute(SO, "AttributeIOR");
408 anIOR = SALOMEDS::AttributeIOR::_narrow(anAttr);
409 anIOR->SetValue(SM_IOR);
410 return SALOMEDS::SObject::_narrow( SO )->GetID();
415 const char* SMESH_Swig::AddSubMeshOnShape(const char* Mesh_Entry, const char* GeomShape_Entry,
416 const char* SM_IOR, int ST)
418 SALOMEDS::SObject_var SO_GeomShape = myStudy->FindObjectID( GeomShape_Entry );
419 if ( !SO_GeomShape->_is_nil() ) {
420 const char * SM_Entry = AddSubMesh (Mesh_Entry,SM_IOR,ST);
421 SALOMEDS::SObject_var SO_SM = myStudy->FindObjectID( SM_Entry );
422 if ( !SO_SM->_is_nil() ) {
423 SetShape (GeomShape_Entry, SM_Entry);
424 return SALOMEDS::SObject::_narrow( SO_SM )->GetID();
430 void SMESH_Swig::CreateAndDisplayActor( const char* Mesh_Entry )
432 // SMESH_Actor* Mesh = smeshGUI->ReadScript(aM);
435 void SMESH_Swig::SetName(const char* Entry, const char* Name)
437 SALOMEDS::SObject_var SO = myStudy->FindObjectID( Entry );
438 SALOMEDS::GenericAttribute_var anAttr;
439 SALOMEDS::AttributeName_var aName;
440 if ( !SO->_is_nil() ) {
441 anAttr = myStudyBuilder->FindOrCreateAttribute(SO, "AttributeName");
442 aName = SALOMEDS::AttributeName::_narrow(anAttr);
443 aName->SetValue(Name);
448 void SMESH_Swig::setOrb()
451 ORB_INIT &init = *SINGLETON_<ORB_INIT>::Instance();
452 ASSERT(SINGLETON_<ORB_INIT>::IsAlreadyExisting());
453 _orb = init( 0 , 0 );
455 INFOS("internal error : orb not found");
458 ASSERT(! CORBA::is_nil(_orb));