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//   
//   This application incorporates Open Design Alliance software pursuant to a license 
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///////////////////////////////////////////////////////////////////////////////

// This file is generated automatically.

#ifndef _IFC4X2_IFCRELDECOMPOSES_AUTO_IMPL_H
#define _IFC4X2_IFCRELDECOMPOSES_AUTO_IMPL_H

#include "IfcRelationshipAutoImpl.h"

#include "TD_PackPush.h"

/** \details
  The namespace contains schema-dependent classes, definitions and sub routines
  for work with IFC4X2 express schema definitions.
*/
namespace OdIfc4x2 {

/** \details
  The decomposition relationship, IfcRelDecomposes, defines the general concept of elements being composed or decomposed. 
  The decomposition relationship denotes a whole/part hierarchy with the ability to navigate from the whole (the composition) to the parts and vice versa.
  Decompositions can be constrained by requiring both, the whole and its parts, to be of the same type - thus establishing a nesting relationship. 
  Or they can require some form of physical containment, thus establishing special types of aggregation relationships.
  
  * EXAMPLE: A cost element is a nest of other cost elements. Or a structural frame is an aggregation of beams and columns. Both are applications of decomposition relationship.
  
  Decompositions imply a dependency, i.e. the definition of the whole depends on the definition of the parts and the parts depend on the existence of the whole. 
  The decomposition relationship can be applied in a recursive manner, i.e. a decomposed element can be part in another decomposition. 
  Cyclic references have to be prevented at application level.

  \remarks
  There are two special names for decomposition, which are linguistically distinguished, nesting and aggregation. 
  The subtypes of IfcRelDecomposes will introduce either the nesting or aggregation convention (see IfcRelNests and IfcRelAggregates).

  \changes
  
  * IFC4 changes: 
    * The differentiation between the aggregation and nesting is determined to be a non-ordered or an ordered collection of parts. 
    * The attributes RelatingObject and RelatedObjects have been demoted to the subtypes.
*/
class IFC4X2_EXPORT IfcRelDecomposes : public IfcRelationship
{
  //DOM-IGNORE-BEGIN
  OD_EXP_NON_INSTANTIABLE_DECLARE_MEMBERS(OdIfc4x2::IfcRelDecomposes);
  //DOM-IGNORE-END


public:

  /** \details
  Returns a type of a class instance.
  \returns
  Pointer to the <exref target="OdDAI__Entity.html">OdDAI::Entity</exref> type that determines an entity definition within a schema.
  */
  virtual OdDAI::Entity* getInstanceType() const override;

  /** \details
  Checks whether the specified instance is the object derived from or belongs to this class.
  \param entityType [in] Entity to check.
  \returns
  true if the specified instance is the object derived from or belongs to this class, false otherwise.
  */
  virtual bool isKindOf(OdIfc::OdIfcEntityType entityType) const override;

  /** \details
  Returns the type of this entity.
  \returns
  A value of the <exref target="OdIfc__OdIfcEntityType.html">OdIfc::OdIfcEntityType</exref> type that represents type of this entity.
  */
  virtual OdIfc::OdIfcEntityType type() const override;
};

/** \details
  A data type that represents a smart pointer to a <exref target="OdIfc4x2__IfcRelDecomposes.html">IfcRelDecomposes</exref> object.
*/
typedef OdSmartPtr<IfcRelDecomposes> IfcRelDecomposesPtr;

} // namespace

#include "TD_PackPop.h"

#endif // _IFC4X2_IFCRELDECOMPOSES_AUTO_IMPL_H