Class

• <DRM Absolute Time Interval>

Superclass

• <DRM Time Interval>

Subclass

• None.

Definition

An instance of this DRM class specifies an interval of time defined by an absolute (GMT) start time, specified by the <DRM Absolute Time> component, and a duration, specified by the fields of the <DRM Absolute Time Interval> instance itself.

<DRM Absolute Time Interval> provides

1. a means to specify a time interval in terms of absolute time (GMT) for metadata, and
2. a general-purpose mechanism for describing intervals specified in terms of absolute (GMT) time.

The delta_days field specifies the number of days since the start of the given <DRM Absolute Time Interval> instance. See constraints on this class for cases where this may be negative.

After delta_days has been taken into account, delta_hours specifies the number of hours since the start of the given <DRM Absolute Time Interval> instance.

After delta_days and delta_hours have been taken into account, delta_minutes specifies the number of minutes since the start of the given <DRM Absolute Time Interval> instance.

After delta_days, delta_hours, and delta_minutes have been taken into account, delta_seconds specifies the number of seconds since the start of the given <DRM Absolute Time Interval> instance. Fractions provide higher accuracy if needed, such as milliseconds.

Class diagram

Figure 6.2 — DRM_Absolute_Time_Interval

Constraints

• Legal time ranges
• Publishable Object
• Time dependency
• Time Interval calculation

Example(s)

• Consider a SEDRIS transmittal for which the data provider is to specify the time period for which that transmittal is to be considered valid. To specify this information, the <DRM Transmittal Root> of the transmittal has an <DRM Absolute Time Interval> component for which time_significance is set to PERIOD_OF_CONTENT. The stop time specified by the <DRM Absolute Time Interval> can be considered to be an “expiration date”.