Class Name: Scale Control Link
Subclasses
This DRM class is concrete and has no subclasses.
Definition
An instance of this DRM class is a specialized
<Control Link> instance used to provide
the connection between an ordered aggregation of
<Expression> instances and the target fields of a
<Scale> instance.
Primary Page in DRM Diagram:
Secondary Pages in DRM Diagram:
Example
Consider a <Scale Control Link> instance that is
driven using values from a <Property Table> instance.
The table value that is used is specified from outside the
transmittal.
For simplicity, in this example, the controlling
<Expression> component of the
<Scale Control Link> instance is the table value itself,
rather than some more complex <Function> instance using
the table value as an argument. Specifically, the
controlling <Expression> component of the
<Scale Control Link> instance is a
<Predefined Function> component with
function =
SE_PREDEFFN_TABLE_VALUE,
the argument of which is a
<Property Table Reference> component associated to
the <Property Table> instance containing the scale values
as depicted in Figure 6.58:
Figure 58 — <DRM Scale Control Link> example
The <Variable> component drives the
<Property Table Reference Control Link> instance,
so that the <Variable> component determines which value
is referenced from the <Property Table> instance.
To provide the hook for this <Variable> component
to be set from outside the transmittal, the <Variable>
component is associated with an <Interface Template> instance
(not shown).
FAQs
No FAQs supplied.
Constraints
Composed of (two-way) (inherited)
Component of (two-way)
Notes
Fields Notes
The description field
specifies a text description of the purpose of the
<Control Link> instance.
The expression_index field
specifies an <Expression> component,
the value of which specifies the value of the
scale_factor field of the affected
<Scale> instances.
If non-zero, the lower_expression_index
field specifies the index of the
<Expression> component
defining the lower limit of the scaling. A value of zero (0)
indicates that no lower limit is specified; otherwise, the value
specifies a one-based index into the ordered aggregation of
<Expression> instances.
If non-zero, the upper_expression_index
field specifies the index of the
<Expression> component
defining the upper limit of the scaling. A value of zero (0)
indicates that no upper limit is specified; otherwise, the value
specifies a one-based index into the ordered aggregation of
<Expression> instances.
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