ISO/IEC 18023-1:200x(E) — Table 6.260 DRM_State_Control

Table 6.260 — DRM_State_Control_Link

Property

Description

Class

<DRM State Control Link>

Superclass

<DRM Control Link>

Subclass

None.

Definition

An instance of this DRM class specifies a <DRM Expression> instance that determines the active_state_value of all target state-related aggregation instances, and specifies how the targets are to behave if the resulting active_state_value does not match any branch’s <DRM State Data> instance within a given target.

This specifies which <DRM Expression> component controls the active_state_value field of the target state-related aggregate(s).

This specifies the behaviour state control when the specified controlling <DRM Expression> instance evaluates to a state value that does not correspond (match) any branch’s <DRM State Data> instance within the target state-related aggregate(s).

Clarifications

None.

Class diagram

Figure 6.309 — DRM_State_Control_Link

Inherited field elements

Field name	Range	Field data type
description		String

Field elements

Field name	Range	Field data type
expression_index		Integer_Positive
mismatch_behaviour		State_Mismatch_Behaviour

Associated to (one-way) (inherited)

None.

Associated to (one-way)

None.

Associated by (one-way) (inherited)

None.

Associated by (one-way)

None.

Associated with (two-way) (inherited)

None.

Associated with (two-way)

None.

Composed of (two-way) (inherited)

one or more {ordered} <DRM Expression> instances

Composed of (two-way)

None.

Composed of (two-way metadata) (inherited)

None.

Composed of (two-way metadata)

None.

Component of (two-way) (inherited)

None.

Component of (two-way)

zero or more <DRM State Related Features> instances
zero or more <DRM State Related Geometry> instances

Constraints

Example(s)

Consider a <DRM State Related Features> instance describing the topology of a road, where the road crosses bridges that can be destroyed and has segments that can be washed out by flooding. The active state of the road (that is, how much damage it has actually suffered) is a variable, determined by some combination of environmental conditions (such as amount of precipitation, whether a nearby dam has collapsed, and so on).
Consequently, the <DRM State Related Features> instance has a <DRM State Control Link> component that specifies a <DRM Variable> instance that controls the active_state_value of the <DRM State Related Features> instance.