Class Ifc2x3::IfcProcess

Nested Relationships

This class is a nested type of Struct Ifc2x3.

Inheritance Relationships

Base Type

Derived Types

Class Documentation

class Ifc2x3::IfcProcess : public Ifc2x3::IfcObject

Definition from ISO9000: A process is a set of activities that are interrelated or that interact with one another. Processes use resources to transform inputs into outputs. Processes are interconnected because the output from one process becomes the input for another process. In effect, processes are “glued” together by means of such input output relationships.

IfcProcess is defined as one individual activity or event, that is ordered in time, that has sequence relationships with other processes, which transforms input in output, and may connect to other other processes through input output relationships. An IfcProcess can be an activity (or task), or an event. It takes usually place in building construction with the intent of designing, costing, acquiring, constructing, or maintaining products or other and similar tasks or procedures.

Figure 2 — Process relationships and the ICON process diagram.

HISTORY New entity in IFC Release 1.0.

IFC2x PLATFORM CHANGE The attribute Productivity has been removed.

IFC2x4 CHANGE The attribute Identification has been promoted from subtypes IfcTask and others.

Relationship use definition Process information relates to other objects by establishing the following relationships:

Nesting of processes : IfcRelNests - A process can contain sub processes and thereby be nested. Sequencing of processes : IfcRelSequence - Processes can be placed in sequence (including overlapping for parallel tasks), and have predecessors and successors. Assigning process to schedules : IfcRelAssignsToControl - Activities such as tasks, and predominately summary tasks, are assigned to a work schedule. Having a product assigned to the process as input : IfcRelAssignsToProcess - Products can be assigned as input to a process, such as for construction process planning. Having a product assigned to the process as output : IfcRelAssignsToProduct - Products can be assigned as output to a process, such as for construction process planning. Having a control assigned to the process as process control : IfcRelAssignsToProcess - Items that act as a control onto the process can be assigned to a process, such as for cost management (a cost item assigned to a work task). Having a resource assigned to the process as consumed by the process : IfcRelAssignsToProcess - Items that act as a mechanism to a process, such as labor, material and equipment in cost calculations.

Subclassed by Ifc2x3::IfcProcedure, Ifc2x3::IfcTask

Public Types

typedef IfcTemplatedEntityList<IfcProcess> list

Public Functions

IfcTemplatedEntityList<IfcRelAssignsToProcess>::ptr OperatesOn() const
IfcTemplatedEntityList<IfcRelSequence>::ptr IsSuccessorFrom() const
IfcTemplatedEntityList<IfcRelSequence>::ptr IsPredecessorTo() const
const IfcParse::entity &declaration() const
IfcProcess(IfcEntityInstanceData *e)
IfcProcess(std::string v1_GlobalId, ::Ifc2x3::IfcOwnerHistory *v2_OwnerHistory, boost::optional<std::string> v3_Name, boost::optional<std::string> v4_Description, boost::optional<std::string> v5_ObjectType)

Public Static Functions

const IfcParse::entity &Class()