occt/src/GraphDS/GraphDS_RelationGraph.gxx

// Created on: 1991-09-09
// Created by: Denis PASCAL
// Copyright (c) 1991-1999 Matra Datavision
// Copyright (c) 1999-2014 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.

//		<dp>

#include <Standard_NoSuchObject.hxx>
#include <Standard_DomainError.hxx>
#include <TColStd_MapIteratorOfMapOfTransient.hxx>
#include <GraphDS_DataMapIteratorOfEntityRoleMap.hxx>

//=======================================================================
//function : GraphDS_RelationGraph
//purpose  : 
//=======================================================================

GraphDS_RelationGraph::GraphDS_RelationGraph () 
{
}


//=======================================================================
//function : GraphDS_RelationGraph
//purpose  : 
//=======================================================================

GraphDS_RelationGraph::GraphDS_RelationGraph 
  (const GraphDS_RelationGraph& other)
{
  myEntities   = other.myEntities;
  myRelations =  other.myRelations;
}


//=======================================================================
//function : IsEmpty
//purpose  : 
//=======================================================================

Standard_Boolean GraphDS_RelationGraph::IsEmpty () const 
{
  return myEntities.Extent() ==0;
}


//=======================================================================
//function : Clear
//purpose  : 
//=======================================================================

void GraphDS_RelationGraph::Clear () 
{
  myEntities.Clear();
  myRelations.Clear();
}


//=======================================================================
//function : Contains
//purpose  : 
//=======================================================================

Standard_Boolean GraphDS_RelationGraph::Contains 
  (const Handle(GraphDS_Entity)& V) const 
{
  return myEntities.Contains(V);
}


//=======================================================================
//function : IsInRelation
//purpose  : 
//=======================================================================

Standard_Boolean GraphDS_RelationGraph::IsInRelation 
  (const Handle(GraphDS_Entity)& V) const 
{
  return (V->HasRelation());
}


//=======================================================================
//function : IsInput
//purpose  : 
//=======================================================================

Standard_Boolean GraphDS_RelationGraph::IsInput 
  (const Handle(GraphDS_Entity)& V) const 
{
   return !IsDependent(V);
}


//=======================================================================
//function : IsOutput
//purpose  : 
//=======================================================================

Standard_Boolean GraphDS_RelationGraph::IsOutput 
  (const Handle(GraphDS_Entity)& V) const 
{
  if (V->GetRelations().IsEmpty()) return Standard_True;
  TColStd_MapIteratorOfMapOfTransient it (V->GetRelations());
  for (;it.More();it.Next()) {
    if (Handle(GraphDS_Relation)::DownCast(it.Key())->IsOutput(V)) return Standard_True;
  }
  return Standard_False;  
}


//=======================================================================
//function : IsDependent
//purpose  : il est seulement sortie d'une au moins de ses relations
//=======================================================================

Standard_Boolean GraphDS_RelationGraph::IsDependent 
  (const Handle(GraphDS_Entity)& E) const 
{
  if (E->GetRelations().IsEmpty()) return Standard_False;  
  TColStd_MapIteratorOfMapOfTransient it (E->GetRelations());
  for (;it.More();it.Next()) {
    if (Handle(GraphDS_Relation)::DownCast(it.Key())->IsOutput(E)) {
      if  (!Handle(GraphDS_Relation)::DownCast(it.Key())->IsInput(E))return Standard_True;
    }
  }
  return Standard_False;  
}

//=======================================================================
//function : Contains
//purpose  : 
//=======================================================================

Standard_Boolean GraphDS_RelationGraph::Contains 
  (const Handle(GraphDS_Relation)& R) const 
{
  return (myRelations.Contains(R));
}


//=======================================================================
//function : NbEntities
//purpose  : 
//=======================================================================

Standard_Integer GraphDS_RelationGraph::NbEntities() const 
{
  return myEntities.Extent();
}


//=======================================================================
//function : NbRelations
//purpose  : 
//=======================================================================

Standard_Integer GraphDS_RelationGraph::NbRelations() const 
{
  return myRelations.Extent();
}


//=======================================================================
//function : AddEntity
//purpose  : 
//=======================================================================

Handle(GraphDS_Entity) GraphDS_RelationGraph::AddEntity
       (const GraphDS_Item& item) 
{
  Handle(GraphDS_Entity) entity = new GraphDS_Entity(item);
  myEntities.Add(entity);
  return entity;
}


//=======================================================================
//function : RemoveEntity
//purpose  : Removes an Entity of the relation graph     
//=======================================================================

void GraphDS_RelationGraph::RemoveEntity
 (const Handle(GraphDS_Entity)& E) 
{
  if (E->HasRelation()) Standard_DomainError::Raise();
  myEntities.Remove(E); 
}


//=======================================================================
//function : AddRelation
//purpose  : 
//=======================================================================
Handle(GraphDS_Relation) GraphDS_RelationGraph::AddRelation
       (const GraphDS_Attribute& att)
{
  Handle(GraphDS_Relation) newrel = new GraphDS_Relation(att);
  myRelations.Add(newrel);
  return newrel;
}

//=======================================================================
//function : IsEmpty
//purpose  : 
//=======================================================================

Standard_Boolean GraphDS_RelationGraph::IsEmpty
  (const Handle(GraphDS_Relation)& R) const
{
  return R->IsEmpty();
} 


//=======================================================================
//function : Add
//purpose  : InputAndOutput
//=======================================================================
void GraphDS_RelationGraph::Add
  (const Handle(GraphDS_Relation)& R,
   const Handle(GraphDS_Entity)&   E)
{
  Add (R,E,GraphDS_InputAndOutput);
}

//=======================================================================
//function : AddInput
//purpose  : OnlyInput
//=======================================================================
void GraphDS_RelationGraph::AddInput
  (const Handle(GraphDS_Relation)& R,
   const Handle(GraphDS_Entity)&   E)
{
  Add (R,E,GraphDS_OnlyInput);
}

//=======================================================================
//function : AddOutput
//purpose  : OnlyOutput
//=======================================================================
void GraphDS_RelationGraph::AddOutput
  (const Handle(GraphDS_Relation)& R,
   const Handle(GraphDS_Entity)&   E)
{
  Add (R,E,GraphDS_OnlyOutput);
}

//=======================================================================
//function : Add
//purpose  : 
//=======================================================================
void GraphDS_RelationGraph::Add
  (const Handle(GraphDS_Relation)& R,
   const Handle(GraphDS_Entity)&   E,
   const GraphDS_EntityRole role)
{
  R->Add(E,role);
  E->Add(R);
}

//=======================================================================
//function : SetRole
//purpose  : 
//=======================================================================
void GraphDS_RelationGraph::SetRole
  (const Handle(GraphDS_Relation)& R,
   const Handle(GraphDS_Entity)&   E,
   const GraphDS_EntityRole role)
{
  R->SetRole(E,role);
}


//=======================================================================
//function : Remove
//purpose  : 
//=======================================================================
void GraphDS_RelationGraph::Remove
  (const Handle(GraphDS_Relation)& R,
   const Handle(GraphDS_Entity)&   E)
{
  R->Remove(E);
  E->Remove(R);
}


//=======================================================================
//function : RemoveRelation
//purpose  : Removes a relation of the relation graph 
//=======================================================================

void GraphDS_RelationGraph::RemoveRelation
  (const Handle(GraphDS_Relation)& R) 
{
  Handle(GraphDS_Entity) ENT;
  GraphDS_DataMapIteratorOfEntityRoleMap it;
  for (it.Initialize(R->GetEntities());it.More();it.Next()) {
    ENT = Handle(GraphDS_Entity)::DownCast(it.Key());
    ENT->Remove(R);
  }
  myRelations.Remove(R);
}