Release 10.1A: OpenEdge Development:
Java Open Clients

Date and time conversions

The Progress 4GL DATE, DATETIME, and DATETIME-TZ data types are all mapped to the java.util.GregorianCalendar class. This class supports all the necessary functionality for these data types (it supports date, time, and time zone data). The Java Open Client processes the data differently based on the 4GL data type, as shown in Table 4–2.

Table 4–2: GeorgianCalendar object processing

Progress data type	Process
DATE	Input: Time and time zone information is ignored. Output: Client time zone is used. Time is set to 0 (midnight).
DATETIME	Input: Time zone information is ignored. Output: Client time zone is used.
DATETIME-TZ	Input and Output: Date, time, and time zone is preserved.