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 start time in UTC, specified by the <DRM Absolute Time> component, and a duration, specified by the fields of the <DRM Absolute Time Interval> instance itself. The duration consists of a number of whole days, whole hours, whole minutes, and the remaining seconds.

The <DRM Absolute Time Interval> class provides

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

The delta_days field specifies the number of whole days in the duration. See 7.2.66 Time dependency for cases where this field may have a negative value.

The delta_hours field specifies the number of whole hours in the duration.

The delta_minutes field specifies the number of whole minutes in the duration.

The delta_seconds field specifies the remaining seconds in the duration. Fractions provide sub-second accuracy, if needed.

Class diagram

Figure 6.2 — DRM_Absolute_Time_Interval

Constraints

• Publishable object
• Time dependency
• Time interval calculation

Example(s)

• Consider a 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> instance of the transmittal has a <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> instance can be considered to be an “expiration date”.