Reserved Words
MAPPER reserved words are supported in an MJ application via a combination of constants, interfaces for run-time contexts and return values.
Constants
Constants replace reserved words whose value is known at compile time, such as
RSLANT and TIC, or
are independent of application context (current date and time):
| MJ Constants Class | Supported Reserved Words |
|---|---|
| MJSpecialChars | RSLANT$,
SOE$,
TAB$,
TIC$ |
| MJCurrentDate | DATE0$,
DATE1$,
DATE2$,
DATE3$,
DATE4$,
DATE5$,
DATE6$,
DATE7$,
DATE8$,
DATE9$,
DATE11$,
DATE12$,
DATE14$,
DATE15$,
DATE16$,
DATE18$,
DATE19$,
DATE20$ |
| MJCurrentTime | CURSEC$,
DAY$,
MSEC$,
TIME$ |
Interfaces for Run-time Contexts
Interfaces represent run-time contexts available to an MJ application and expose reserved words whose value is known only during program execution:
| MJ Interface | Description | MJ Factory Class | Supported Reserved Words |
|---|---|---|---|
| MJCallerCtx | Reserved words related to originating RUN. | IMJCallerCtxFactory |
ORUN$,
OSITE$,
OSYSNAM$,
OUSER$,
ODEPN$,
OSTNUM$,
ORSTAN$,
BPORT$ |
| MJCdrCtx | Reserved words related to cabinets, drawers and reports and results. | IMJCdrCtxFactory |
CAB$,
CAB1$,
ECAB$,
FCAB$,
LCAB$,
PLNG$,
ACDRW$,
ADRW$,
ADRW1$ - ADRW16$,
AEDRW$,
AXDRW$,
CDRW$,
CHAR$,
DRW$,
DRW1$ - DRW16$,
EDRW$,
ETYPE$,
FDRW$,
FFTYPE$,
LNKDRW$,
NETDRW$,
SECDRW$,
LIBDRW$,
ERPT$,
FRPT$,
RPT$,
CRPT$,
LNKRPT$,
SECRPT$ |
| MJDisplayCtx | Reserved words related to cursor position and special display characters. | IMJDisplayCtxFactory |
CURH$,
CURV$,
SOEH$,
SOEV$,
DLINE$,
HLINES$,
LITEM$ |
| MJGraphicsCtx | Reserved words related to graphics and graphical user interface (GUI). | IMJGraphicsCtxFactory |
GRAPH$,
DWCAP$,
APILVL$,
COLOR$,
ASPECT$,
ACTINP$,
ACTWIN$,
WND$ |
| MJLegacyDBCtx | Reserved words related to legacy (MAPPER) data such as sites and databases. | IMJLegacyDBCtxFactory |
DBASE$,
DBTHRS$,
DBUSG$ |
| MJLegacyDTMCtx | Reserved words related to legacy (MAPPER) Data Transfer Module. | IMJLegacyDTMCtxFactory |
DTM$,
DTNAM$,
MSGQ$ |
| MJLegacyEnvCtx | Reserved words related to legacy (MAPPER) execution environment and resources. | IMJLegacyEnvCtxFactory |
CALL$,
DLP$,
ENVSTR$,
FRESTR$,
GLBSTR$,
IO$,
IP$,
LLP$,
MAXEVR$,
MAXGVR$,
MAXLAB$,
MXDEPN$ |
| MJLegacyOutputCtx | Reserved words related to things like printers. | IMJLegacyOutputCtxFactory |
ESC$ |
| MJLegacySecurityCtx | Reserved words related to legacy (MAPPER OS2200) credentials and security. | IMJLegacySecurityCtxFactory |
OSFILS$,
OSPLEN$,
OSUIDS$,
OSUSER$,
CPRIV$,
OPRIV$,
RPRIV$,
SPRIV$ |
| MJUserAgentCtx | Reserved words related to client workstation. | IMJUserAgentCtxFactory |
WS$,
WSIPA$,
WSITE$,
STNUM$,
SCNH$,
SCNV$,
TTYPE$,
FCC$,
LOOK$,
TCCS$ |
| MJUserCtx | Reserved words related to identity of user. | IMJUserCtxFactory |
USER$,
DEPN$,
DEPT$,
SECGRP$ |
Return Values
Reserved words like STAT act essentially as global variables set by various MAPPER commands.
In MJ, such reserved words are made available as return values by equivalent MJ components.