OdIfc4x1::IfcRelDecomposes Class Reference

#include <IfcRelDecomposesAutoImpl.h>

Inheritance diagram for OdIfc4x1::IfcRelDecomposes:

Public Member Functions
virtual OdDAI::Entity *	getInstanceType () const override
virtual bool	isKindOf (OdIfc::OdIfcEntityType entityType) const override
virtual OdIfc::OdIfcEntityType	type () const override
Public Member Functions inherited from OdIfc4x1::IfcRoot
OdDAI::CompressedGUID	getGlobalId () const
void	setGlobalId (OdDAI::CompressedGUID GlobalId)
const OdDAIObjectId &	getOwnerHistory () const
void	setOwnerHistory (const OdDAIObjectId &OwnerHistory)
const OdAnsiString &	getName () const
void	setName (const OdAnsiString &Name)
const OdAnsiString &	getDescription () const
void	setDescription (const OdAnsiString &Description)
	IfcRoot ()
virtual OdResult	inFields (OdDAI::OdSpfFilerBase *rdFiler) override
virtual OdResult	outFields (OdDAI::OdSpfFilerBase *wrFiler) override
virtual OdRxValue	getAttr (const char *attrName) const override
virtual void	unsetAttr (const char *explicitAttrName) override
virtual bool	testAttr (const char *explicitAttrName) const override
virtual bool	putAttr (const char *explicitAttrName, const OdRxValue &val) override
virtual OdRxValue	getAttr (const OdIfc::OdIfcAttribute attrDef) const override
virtual void	unsetAttr (const OdIfc::OdIfcAttribute explicitAttrDef) override
virtual bool	testAttr (const OdIfc::OdIfcAttribute explicitAttrDef) const override
virtual bool	putAttr (const OdIfc::OdIfcAttribute explicitAttrDef, const OdRxValue &val) override
Public Member Functions inherited from OdIfc4x1::OdIfc4x1Instance
void	setInverseCounterParts () override
Public Member Functions inherited from OdIfc::OdIfcInstance
	ODRX_DECLARE_MEMBERS (OdIfcInstance)
	OdIfcInstance ()
	~OdIfcInstance ()
bool	isInstanceOf (OdIfcEntityType entityType) const
IfcOpResult	resolved ()
void	resolve (IfcOpResult resolved, void *resPtr)
void	unresolve ()
virtual void	setGsNode (OdGsCache *pGsNode)
virtual OdGsCache *	gsNode () const
virtual OdUInt32	subSetAttributes (OdGiDrawableTraits *traits) const
virtual bool	subWorldDraw (OdGiWorldDraw *wd) const
virtual OdDbStub *	ownerId () const

Additional Inherited Members
Static Public Member Functions inherited from OdIfc::OdIfcInstance
static const OdGePoint3d *	asPoint3d (const OdIfcInstance *inst)
static const OdGePoint2d *	asPoint2d (const OdIfcInstance *inst)
static const OdGeVector3d *	asVector3d (const OdIfcInstance *inst)
static const OdGeVector2d *	asVector2d (const OdIfcInstance *inst)
static const OdGeMatrix2d *	asMatrix2d (const OdIfcInstance *inst)
static const OdGeMatrix3d *	asMatrix3d (const OdIfcInstance *inst)
static OdIfcCompoundPtr	asCompound (OdSmartPtr< OdIfcInstance > inst)
static const OdCmEntityColor *	asRgbColor (const OdIfcInstance *inst)
Protected Attributes inherited from OdIfc4x1::IfcRoot
OdDAI::CompressedGUID	m_GlobalId
OdDAIObjectId	m_OwnerHistory
OdAnsiString	m_Name
OdAnsiString	m_Description
Protected Attributes inherited from OdIfc::OdIfcInstance
void *	m_resPtr
IfcOpResult	m_resolved

Detailed Description

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.

Definition at line 59 of file Ifc4x1/IfcRelDecomposesAutoImpl.h.

Member Function Documentation

getInstanceType()

virtual OdDAI::Entity * OdIfc4x1::IfcRelDecomposes::getInstanceType ( ) const

overridevirtual

Returns a type of a class instance.

Returns

Pointer to the <exref target=https://docs.opendesign.com/tkernel_api_cpp/OdDAI__Entity.html>>OdDAI::Entity</exref> type that determines an entity definition within a schema.

Reimplemented from OdIfc4x1::IfcRelationship.

Reimplemented in OdIfc4x1::IfcRelAggregates, OdIfc4x1::IfcRelNests, OdIfc4x1::IfcRelProjectsElement, and OdIfc4x1::IfcRelVoidsElement.

isKindOf()

virtual bool OdIfc4x1::IfcRelDecomposes::isKindOf ( OdIfc::OdIfcEntityType entityType ) const

overridevirtual

Checks whether the specified instance is the object derived from or belongs to this class.

Parameters

entityType

[in] Entity to check.

Returns

true if the specified instance is the object derived from or belongs to this class, false otherwise.

Reimplemented from OdIfc4x1::IfcRelationship.

Reimplemented in OdIfc4x1::IfcRelAggregates, OdIfc4x1::IfcRelNests, OdIfc4x1::IfcRelProjectsElement, and OdIfc4x1::IfcRelVoidsElement.

type()

virtual OdIfc::OdIfcEntityType OdIfc4x1::IfcRelDecomposes::type ( ) const

overridevirtual

Returns the type of this entity.

Returns

A value of the <exref target=https://docs.opendesign.com/tkernel_api_cpp/OdIfc__OdIfcEntityType.html>>OdIfc::OdIfcEntityType</exref> type that represents type of this entity.

Reimplemented from OdIfc4x1::IfcRelationship.

Reimplemented in OdIfc4x1::IfcRelAggregates, OdIfc4x1::IfcRelNests, OdIfc4x1::IfcRelProjectsElement, and OdIfc4x1::IfcRelVoidsElement.

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The documentation for this class was generated from the following file:

• Ifc4x1/IfcRelDecomposesAutoImpl.h