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Difference between revisions of "Datatypes R2 Issue 67"

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Line 45: Line 45:
 
|  ON || nothing
 
|  ON || nothing
 
|-
 
|-
|  QTY || TS, MO, REAL, INT, TS, RTO, PQ
+
|  QTY || TS, MO, REAL, INT, TS, RTO<QTY, QTY>, PQ
 
|-
 
|-
 
|  INT || nothing
 
|  INT || nothing
Line 64: Line 64:
 
|-
 
|-
 
|  LIST<T> || T
 
|  LIST<T> || T
 +
|-
 +
|  GLIST<T> || T
 +
|-
 +
|  SLIST<T> || T
 
|-
 
|-
 
|  BAG<T> || T
 
|  BAG<T> || T
Line 79: Line 83:
 
|  EIVL<T> || nothing
 
|  EIVL<T> || nothing
 
|-
 
|-
|  GTS<T> || ?
+
|  GTS<T> || SET<PIVL<TS>>, SET<EIVL<TS>>
 
|-
 
|-
 
|  PPD<T> || ?
 
|  PPD<T> || ?
 +
|-}
 +
 +
Not that regards to collections, COLL<X> can by constrained to COLL<Y> where Y is a valid constraint on X
 +
 +
Proposed by Lloyd, but no formal basis:
 +
 +
{|+ border="1"
 +
|-
 +
| '''Source''' || '''Allowed'''
 +
|-
 +
|  SC || ST
 +
|-
 +
|  PN || TN
 +
|-
 +
|  ON || TN
 +
|-
 +
|  REAL || INT
 +
|-
 +
|  PQ || REAL
 +
|-
 +
|  BAG || SET, LIST
 +
|-
 +
|  PIVL<T> || IVL<TS>
 
|-}
 
|-}

Revision as of 10:01, 14 September 2006

Need to document what the acceptable constraint rules are for datatypes.

This table summarizes the allowable datatype substitutions in designs.

Not that regards to collections, COLL<X> can by constrained to COLL<Y> where Y is a valid constraint on X Proposed by Lloyd, but no formal basis:
Source Allowed
ANY anything (including mixins?)
BL nothing
BN nothing
ED ST
ST UID
CD CE, CV, CO
CE CV, CO
CV CO
CO nothing
CS nothing
CR nothing
SC nothing
II nothing
TEL nothing
AD nothing
EN PN, ON, TN
PN nothing
TN nothing
ON nothing
QTY TS, MO, REAL, INT, TS, RTO<QTY, QTY>, PQ
INT nothing
REAL nothing
RTO nothing
PQ nothing
PQR nothing
MO nothing
TS nothing
SET<T> T
LIST<T> T
GLIST<T> T
SLIST<T> T
BAG<T> T
IVL<T> T
HIST<T> HXIT<T>, T
UVP<T> T
NPPD<T> T
PIVL<T> nothing
EIVL<T> nothing
GTS<T> SET<PIVL<TS>>, SET<EIVL<TS>>
PPD<T> ?
Source Allowed
SC ST
PN TN
ON TN
REAL INT
PQ REAL
BAG SET, LIST
PIVL<T> IVL<TS>