IfcActionRequest

Natural language names
Tätigkeitsanfrage
Action Request
Requête d'action
Change log
ItemSPFXMLChangeDescription
IFC2x3 to IFC4
    IfcActionRequestMOVEDSchema changed from IFCFACILITIESMGMTDOMAIN to IFCSHAREDMGMTELEMENTS.
      OwnerHistoryMODIFIEDInstantiation changed to OPTIONAL.
      IdentificationXMODIFIEDName changed from RequestID to Identification.
Instantiation changed to OPTIONAL.
      PredefinedTypeADDED
      StatusADDED
      LongDescriptionADDED
Semantic definitions at the entity
Entity definition

A request is the act or instance of asking for something, such as a request for information, bid submission, or performance of work.

Requests may take many forms depending on the need including fault reports for maintenance, requests for small works, and purchase requests (where these are to be made through a help desk or buying function).

HISTORY  New entity in IFC2x2.
IFC4 CHANGE  Atribute RequestID renamed to Identification and promoted to supertype IfcControl, attributes PredefinedType, Status, and LongDescription added.
Attribute definitions
#AttributeTypeCardinalityDescription G
7PredefinedTypeIfcActionRequestTypeEnum? Identifies the predefined type of sources through which a request can be made.
IFC4 CHANGE The attribute has been added.
X
8StatusIfcLabel? The status currently assigned to the request. Possible values include:
Hold: wait to see if further requests are received before deciding on action
NoAction: no action is required on this request
Schedule: plan action to take place as part of maintenance or other task planning/scheduling
Urgent: take action immediately
IFC4 CHANGE The attribute has been added.
X
9LongDescriptionIfcText? Detailed description of the permit.
IFC4 CHANGE The attribute has been added.
X
Inherited definitions from supertypes
Entity inheritance IfcControl IfcObject IfcObjectDefinition IfcRoot
Attribute inheritance
#AttributeTypeCardinalityDescriptionG
IfcRoot
1GlobalIdIfcGloballyUniqueId Assignment of a globally unique identifier within the entire software world. X
2OwnerHistoryIfcOwnerHistory? Assignment of the information about the current ownership of that object, including owning actor, application, local identification and information captured about the recent changes of the object,
NOTE  only the last modification in stored - either as addition, deletion or modification.
IFC4 CHANGE  The attribute has been changed to be OPTIONAL.
X
3NameIfcLabel? Optional name for use by the participating software systems or users. For some subtypes of IfcRoot the insertion of the Name attribute may be required. This would be enforced by a where rule. X
4DescriptionIfcText? Optional description, provided for exchanging informative comments.X
IfcObjectDefinition
HasAssignmentsIfcRelAssigns
@RelatedObjects
S[0:?]Reference to the relationship objects, that assign (by an association relationship) other subtypes of IfcObject to this object instance. Examples are the association to products, processes, controls, resources or groups.X
NestsIfcRelNests
@RelatedObjects
S[0:1]References to the decomposition relationship being a nesting. It determines that this object definition is a part within an ordered whole/part decomposition relationship. An object occurrence or type can only be part of a single decomposition (to allow hierarchical strutures only).
IFC4 CHANGE  The inverse attribute datatype has been added and separated from Decomposes defined at IfcObjectDefinition.
X
IsNestedByIfcRelNests
@RelatingObject
S[0:?]References to the decomposition relationship being a nesting. It determines that this object definition is the whole within an ordered whole/part decomposition relationship. An object or object type can be nested by several other objects (occurrences or types).
IFC4 CHANGE  The inverse attribute datatype has been added and separated from IsDecomposedBy defined at IfcObjectDefinition.
X
HasContextIfcRelDeclares
@RelatedDefinitions
S[0:1]References to the context providing context information such as project unit or representation context. It should only be asserted for the uppermost non-spatial object.
IFC4 CHANGE  The inverse attribute datatype has been added.
X
IsDecomposedByIfcRelAggregates
@RelatingObject
S[0:?]References to the decomposition relationship being an aggregation. It determines that this object definition is whole within an unordered whole/part decomposition relationship. An object definitions can be aggregated by several other objects (occurrences or parts).
IFC4 CHANGE  The inverse attribute datatype has been changed from the supertype IfcRelDecomposes to subtype IfcRelAggregates.
X
DecomposesIfcRelAggregates
@RelatedObjects
S[0:1]References to the decomposition relationship being an aggregation. It determines that this object definition is a part within an unordered whole/part decomposition relationship. An object definitions can only be part of a single decomposition (to allow hierarchical strutures only).
IFC4 CHANGE  The inverse attribute datatype has been changed from the supertype IfcRelDecomposes to subtype IfcRelAggregates.
X
HasAssociationsIfcRelAssociates
@RelatedObjects
S[0:?]Reference to the relationship objects, that associates external references or other resource definitions to the object.. Examples are the association to library, documentation or classification.X
IfcObject
5ObjectTypeIfcLabel? The type denotes a particular type that indicates the object further. The use has to be established at the level of instantiable subtypes. In particular it holds the user defined type, if the enumeration of the attribute PredefinedType is set to USERDEFINED.
X
IsDeclaredByIfcRelDefinesByObject
@RelatedObjects
S[0:1]Link to the relationship object pointing to the declaring object that provides the object definitions for this object occurrence. The declaring object has to be part of an object type decomposition. The associated IfcObject, or its subtypes, contains the specific information (as part of a type, or style, definition), that is common to all reflected instances of the declaring IfcObject, or its subtypes.
IFC4 CHANGE  New inverse relationship, change made with upward compatibility for file based exchange.
X
DeclaresIfcRelDefinesByObject
@RelatingObject
S[0:?]Link to the relationship object pointing to the reflected object(s) that receives the object definitions. The reflected object has to be part of an object occurrence decomposition. The associated IfcObject, or its subtypes, provides the specific information (as part of a type, or style, definition), that is common to all reflected instances of the declaring IfcObject, or its subtypes.
IFC4 CHANGE  New inverse relationship, change made with upward compatibility for file based exchange.
X
IsTypedByIfcRelDefinesByType
@RelatedObjects
S[0:1]Set of relationships to the object type that provides the type definitions for this object occurrence. The then associated IfcTypeObject, or its subtypes, contains the specific information (or type, or style), that is common to all instances of IfcObject, or its subtypes, referring to the same type.
IFC4 CHANGE  New inverse relationship, the link to IfcRelDefinesByType had previously be included in the inverse relationship IfcRelDefines. Change made with upward compatibility for file based exchange.
X
IsDefinedByIfcRelDefinesByProperties
@RelatedObjects
S[0:?]Set of relationships to property set definitions attached to this object. Those statically or dynamically defined properties contain alphanumeric information content that further defines the object.
IFC4 CHANGE  The data type has been changed from IfcRelDefines to IfcRelDefinesByProperties with upward compatibility for file based exchange.
X
IfcControl
6IdentificationIfcIdentifier? An identifying designation given to a control It is the identifier at the occurrence level.
IFC4 CHANGE Attribute unified by promoting from various subtypes of IfcControl.
X
ControlsIfcRelAssignsToControl
@RelatingControl
S[0:?]Reference to the relationship that associates the control to the object(s) being controlled. X
IfcActionRequest
7PredefinedTypeIfcActionRequestTypeEnum? Identifies the predefined type of sources through which a request can be made.
IFC4 CHANGE The attribute has been added.
X
8StatusIfcLabel? The status currently assigned to the request. Possible values include:
Hold: wait to see if further requests are received before deciding on action
NoAction: no action is required on this request
Schedule: plan action to take place as part of maintenance or other task planning/scheduling
Urgent: take action immediately
IFC4 CHANGE The attribute has been added.
X
9LongDescriptionIfcText? Detailed description of the permit.
IFC4 CHANGE The attribute has been added.
X
Definitions applying to General Usage

 Instance diagram


Concept usage

Property Sets for Objects

The Property Sets for Objects concept template applies to this entity as shown in Table 256.

PsetNameProperties
Pset_ActionRequest
TemplatePropertyNameValue
Single ValueRequestSourceLabelIfcLabel
Single ValueRequestCommentsIfcText

Table 256 — IfcActionRequest Property Sets for Objects



Approval

The Approval Association concept applies to this entity.

Approvals may be associated to indicate the status of acceptance or rejection using the IfcRelAssociatesApproval relationship where RelatingApproval refers to an IfcApproval and RelatedObjects contains the IfcActionRequest. Approvals may be split into sub-approvals using IfcApprovalRelationship to track approval status separately for each party where RelatingApproval refers to the higher-level approval and RelatedApprovals contains one or more lower-level approvals. The hierarchy of approvals implies sequencing such that a higher-level approval is not executed until all of its lower-level approvals have been accepted.



Aggregation

The Aggregation concept template applies to this entity as shown in Table 257.

Table 257 — IfcActionRequest Aggregation

As shown in Figure 281, an IfcActionRequest may be aggregated into components.

Composition Use Definition

Figure 281 — Action request composition



Nesting

The Object Nesting concept template applies to this entity as shown in Table 258.

TypeDescription
IfcActionRequestA request may be nested into follow-up requests, in order of issue

Table 258 — IfcActionRequest Object Nesting



Control Assignment

The Control Assignment concept applies to this entity.

As shown in Figure 282, an IfcActionRequest may be assigned to the following entities using relationships as indicated:

The IfcActionRequest may have assignments of its own using the IfcRelAssignsToControl relationship where RelatingControl refers to the IfcActionRequest and RelatedObjects contains one or more objects of the following types:

Assignment Use Definition

Figure 282 — Action request assignment



mvdXML Specification
<?xml version="1.0"?>
<ConceptRoot xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" uuid="8a15ef25-d7f3-4ecc-b040-19f2f5d7b1b4" name="IfcActionRequest" status="sample" applicableRootEntity="IfcActionRequest">
  <Applicability uuid="00000000-0000-0000-0000-000000000000" status="sample">
    <Template ref="1f5fcb97-9a8c-47c9-b667-19749d5248fb" />
    <TemplateRules operator="and" />
  </Applicability>
  <Concepts>
    <Concept uuid="1dee9901-c02f-472e-91af-d07356ee8afd" name="Property Sets for Objects" status="sample" override="false">
      <Template ref="f74255a6-0c0e-4f31-84ad-24981db62461" />
      <TemplateRules operator="and">
        <TemplateRule Parameters="PsetName[Value]='Pset_ActionRequest'" />
      </TemplateRules>
    </Concept>
    <Concept uuid="e0d117ac-f5da-43d6-89ee-0586fd8463a7" name="Approval" status="sample" override="false">
      <Template ref="52561fda-4281-409d-aa07-da485302249e" />
    </Concept>
    <Concept uuid="acbdb53f-2894-4968-9cc6-ae435e4d4436" name="Aggregation" status="sample" override="false">
      <Template ref="02eefcc6-b26c-4f20-9c7c-c30ae74eb9a9" />
      <TemplateRules operator="and">
        <TemplateRule Description="Cost schedules may indicate the costs projected or incurred for the request." Parameters="" />
      </TemplateRules>
    </Concept>
    <Concept uuid="5c4f434c-ffc4-4feb-aa3b-9f3be872d912" name="Nesting" status="sample" override="false">
      <Template ref="38ca8788-5e47-411c-8294-d56f9e9a5691" />
      <TemplateRules operator="and">
        <TemplateRule Description="A request may be nested into follow-up requests, in order of issue" Parameters="Type[Type]='IfcActionRequest'" />
      </TemplateRules>
    </Concept>
    <Concept uuid="57dab2fa-5a76-454e-9404-b1577e9b5a1a" name="Control Assignment" status="sample" override="false">
      <Template ref="813e73fe-5641-4648-a680-8887cf4359f1" />
    </Concept>
  </Concepts>
</ConceptRoot>
Concept inheritance

#ConceptTemplateModel View
IfcRoot
IdentitySoftware IdentityGeneral Usage
Revision ControlRevision ControlGeneral Usage
IfcObjectDefinition
Classification AssociationClassification AssociationGeneral Usage
IfcObject
Object User IdentityObject User IdentityGeneral Usage
Object Predefined TypeObject Predefined TypeGeneral Usage
Object TypingObject TypingGeneral Usage
Property Sets with OverrideProperty Sets with OverrideGeneral Usage
IfcActionRequest
Property Sets for ObjectsProperty Sets for ObjectsGeneral Usage
ApprovalApproval AssociationGeneral Usage
AggregationAggregationGeneral Usage
NestingObject NestingGeneral Usage
Control AssignmentControl AssignmentGeneral Usage
Formal representations
XML Specification
 <xs:element name="IfcActionRequest" type="ifc:IfcActionRequest" substitutionGroup="ifc:IfcControl" nillable="true"/>
 <xs:complexType name="IfcActionRequest">
  <xs:complexContent>
   <xs:extension base="ifc:IfcControl">
    <xs:attribute name="PredefinedType" type="ifc:IfcActionRequestTypeEnum" use="optional"/>
    <xs:attribute name="Status" type="ifc:IfcLabel" use="optional"/>
    <xs:attribute name="LongDescription" type="ifc:IfcText" use="optional"/>
   </xs:extension>
  </xs:complexContent>
 </xs:complexType>
EXPRESS Specification
ENTITY IfcActionRequest
 SUBTYPE OF (IfcControl);
  PredefinedType : OPTIONAL IfcActionRequestTypeEnum;
  Status : OPTIONAL IfcLabel;
  LongDescription : OPTIONAL IfcText;
END_ENTITY;

Link to EXPRESS-G diagram EXPRESS-G diagram

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