ISO 10303-214:2010(E)
An Event_reference is the definition of a point in time established relative to an event.
The data associated with an Event_reference are the following:
The description specifies additional information about the Event_reference.
EXAMPLE The description may also be used to describe the event further if the event_type is not sufficient. The description may, e.g., contain a number that represents a model year.
See event_reference to multi_language_string for the application assertion.
The description need not be specified for a particular Event_reference.
If present, there shall be exactly one object that defines the description for an Event_reference.
The event_context specifies the piece of product data the Event_reference refers to.
EXAMPLE In the case of an Event_reference with event_type 'start of production' the event_context would refer to the Item_version that is subject to production.
See event_reference to activity, event_reference to activity_element, event_reference to activity_method_assignment, event_reference to alternate_item_relationship, event_reference to approval_status, event_reference to assembly_substitute_relationship, event_reference to certification, event_reference to class_category_association, event_reference to class_condition_association, event_reference to class_inclusion_association, event_reference to class_specification_association, event_reference to class_structure_relationship, event_reference to classification_association, event_reference to classification_system, event_reference to complex_product, event_reference to complex_product_relationship, event_reference to configuration, event_reference to contract, event_reference to design_constraint, event_reference to design_discipline_item_definition, event_reference to document, event_reference to document_file, event_reference to document_representation, event_reference to document_type_property, event_reference to document_version, event_reference to drawing, event_reference to drawing_sheet, event_reference to general_classification, event_reference to geometric_model, event_reference to item, event_reference to item_definition_instance_relationship, event_reference to item_definition_relationship, event_reference to item_instance, event_reference to item_instance_relationship, event_reference to item_version, event_reference to item_version_relationship, event_reference to kinematic_simulation_information, event_reference to manufacturing_configuration, event_reference to material, event_reference to organization, event_reference to organization_relationship, event_reference to person_in_organization, event_reference to person_in_organization_relationship, event_reference to physical_assembly_relationship, event_reference to physical_instance, event_reference to physical_instance_test_result, event_reference to process_operation_definition, event_reference to process_operation_occurrence, event_reference to process_operation_resource_assignment, event_reference to process_plan, event_reference to product_class, event_reference to product_identification, event_reference to product_structure_relationship, event_reference to project, event_reference to property, event_reference to property_value_association, event_reference to security_classification, event_reference to security_level, event_reference to simple_property_association, event_reference to specification, event_reference to specification_category, event_reference to specification_expression, event_reference to specification_inclusion, event_reference to styled_model, event_reference to view_area, event_reference to work_order, and event_reference to work_request for the application assertions.
The event_context need not be specified for a particular Event_reference.
If present, there shall be exactly one object that defines the event_context for an Event_reference.
The event_type specifies the kind of event that serves as reference.
EXAMPLE The event_type may be the 'start of production' of a Product_class specified as 'event_context'
The offset specifies the amount of time before or after the defined event that shall be used to calculate the actual point in time.
See event_reference to duration for the application assertion.
The offset need not be specified for a particular Event_reference.
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