OdDgElementId Class

Class Hierarchy

Syntax

C++

class OdDgElementId;

File

DgElementId.h

Description

This class implements memory-resident ElementId objects for OdDgDatabase objects.

Remarks

Database objects reference other database objects using ElementId objects, and a database object pointer can always be obtained from a valid ObjectId objects. The effect of this mechanism is that database objects do not have to reside in memory unless they are explicitly being examined or modified by the user.

See Also

OdDbHandle
OdDgElement

Corresponding C++ library: TG_Db

Group

OdDg Classes

Public Methods

	Name	Description
	OdDgElementId	This is the overview for the OdDgElementId constructor overload.

OdDgElementId Data Members

	Name	Description
	kNull	The null ObjectId object.

OdDgElementId Methods

	Name	Description
	convertToRedirectedId	If this ObjectId object has been redirected from another database (possibly an Xref), this function returns the actual ObjectId object for that database.
	database	Returns the database with which this ObjectId object is associated.
	getHandle	Returns the database handle of the object referenced by this ObjectId object.
	getNonForwardedHandle	Returns the database handle of the object referenced by this ObjectId object.
	isErased	Returns true if and only if the object associated with this ObjectId object is erased.
	isNull	Returns true and only if this ObjectId object is null.
	isValid	Returns true and only if this ObjectId object references a valid object.
	openObject	Opens the database object associated with this ObjectId object, in the specified mode.
	originalDatabase	Returns the original database with which this ObjectId object is associated.
	safeOpenObject	Opens the database object associated with this ObjectId object, in the specified mode, or throws and exception if unsucessful.
	setNull	Sets this Object ID to null.

OdDgElementId Operators

	Name	Description
	!	This is !, a member of class OdDgElementId.
	!=	This is !=, a member of class OdDgElementId.
	<	This is <, a member of class OdDgElementId.
	<=	This is <=, a member of class OdDgElementId.
	=	This is the overview for the = operator overload.
	==	This is ==, a member of class OdDgElementId.
	>	This is >, a member of class OdDgElementId.
	->	This is ->, a member of class OdDgElementId.
	>=	This is >=, a member of class OdDgElementId.
	OdDbStub*	This is OdDbStub*, a member of class OdDgElementId.

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