Class DV_DATE

Represents an absolute point in time, specified to the second. Semantics defined
by ISO 8601.
Used for recording a precise point in real world time, and for approximate time
stamps, e.g. the origin of a HISTORY in an OBSERVATION which is only partially
known.

Attribut value

ISO8601 date/time string

Declaration :

Uml : + value : String, multiplicity : 1
C++ : public: string value
Java : public String value

Operation magnitude

numeric value of the date/time as seconds since the calendar origin point.

Declaration :

Uml : + magnitude() : Real
C++ : public: double magnitude()
Java : public double magnitude()

Operation is_strictly_comparable_to

Test if two instances are strictly comparable.

Declaration :

Uml : + is_strictly_comparable_to(in other : DV_ORDERED) : Boolean
C++ : public: virtual bool is_strictly_comparable_to(const DV_ORDERED & other)
Java : public boolean is_strictly_comparable_to()

Operation add

Add a time period to this date_time.

Declaration :

Uml : + add(in a_diff : DV_AMOUNT) : DV_ABSOLUTE_QUANTITY
C++ : public: virtual DV_ABSOLUTE_QUANTITY * add()
Java : public DV_ABSOLUTE_QUANTITY add(DV_AMOUNT a_diff)

Operation subtract

Subtract a time period from this date_time.

Declaration :

Uml : + subtract(in a_diif : DV_AMOUNT) : DV_ABSOLUTE_QUANTITY
C++ : public: virtual DV_ABSOLUTE_QUANTITY * subtract()
Java : public DV_ABSOLUTE_QUANTITY subtract()