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Difference between revisions of "Datatypes R2 Issue 67"
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Rene spronk (talk | contribs) |
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==Run-time dataype constraints== | ==Run-time dataype constraints== | ||
| − | *ANY | + | *ANY can be constrained as below |
| + | |||
*GTS | *GTS | ||
:I've got an R-MIM that has GTS in it (see the ActReference R-MIMs in shared messages) since they reference (are an extract of, a summary of) any random act. This requires run-time subtitution. According to Grahame GTS should not be in the above list, in which case I'd have to change the models to use ANY for effectiveTime and constrain the runtime substitution somehow. I dont really want to do that. [[User:Rene spronk|Rene spronk]] 06:45, 14 September 2006 (CDT) | :I've got an R-MIM that has GTS in it (see the ActReference R-MIMs in shared messages) since they reference (are an extract of, a summary of) any random act. This requires run-time subtitution. According to Grahame GTS should not be in the above list, in which case I'd have to change the models to use ANY for effectiveTime and constrain the runtime substitution somehow. I dont really want to do that. [[User:Rene spronk|Rene spronk]] 06:45, 14 September 2006 (CDT) | ||
| + | |||
| + | :Right. That's an interesting issue. Why does it require run time substitution - what are you thinking this will achieve? And you can't change to ANY | ||
==Modelling time datatype constraints== | ==Modelling time datatype constraints== | ||
Note that regards to collections, COLL<X> can by constrained to COLL<Y> where Y is a valid constraint on X. | Note that regards to collections, COLL<X> can by constrained to COLL<Y> where Y is a valid constraint on X. | ||
| + | Note also the committees can introduce Mixins (UVL, and NPPD) in the models to any attribute (if thy make sense) | ||
| − | The second table is those proposed by Lloyd, but no formal basis: | + | The second table is those proposed by Lloyd, but they have no formal basis in the abstract datatypes: |
| Line 67: | Line 71: | ||
| INT || nothing | | INT || nothing | ||
|- | |- | ||
| − | | REAL || | + | | REAL || INT |
|- | |- | ||
| RTO || nothing | | RTO || nothing | ||
|- | |- | ||
| − | | PQ || | + | | PQ || REAL, INT |
|- | |- | ||
| PQR || nothing | | PQR || nothing | ||
| Line 117: | Line 121: | ||
|- | |- | ||
| ON || TN | | ON || TN | ||
| − | |||
| − | |||
| − | |||
| − | |||
|- | |- | ||
| BAG || SET, LIST | | BAG || SET, LIST | ||
Revision as of 12:33, 14 September 2006
Need to document what the acceptable constraint rules are for datatypes.
This table summarizes the allowable datatype substitutions in designs.
There are two circumstances when one would constrain datatypes:
- Modelling-time: as part of the HDF, done by committee or affilliate
- Run time: as part of the on the wire format (uses xsi:type) as a constraint of a datatype as used in the serialized model (mostly: the message type)
Run-time dataype constraints
- ANY can be constrained as below
- GTS
- I've got an R-MIM that has GTS in it (see the ActReference R-MIMs in shared messages) since they reference (are an extract of, a summary of) any random act. This requires run-time subtitution. According to Grahame GTS should not be in the above list, in which case I'd have to change the models to use ANY for effectiveTime and constrain the runtime substitution somehow. I dont really want to do that. Rene spronk 06:45, 14 September 2006 (CDT)
- Right. That's an interesting issue. Why does it require run time substitution - what are you thinking this will achieve? And you can't change to ANY
Modelling time datatype constraints
Note that regards to collections, COLL<X> can by constrained to COLL<Y> where Y is a valid constraint on X. Note also the committees can introduce Mixins (UVL, and NPPD) in the models to any attribute (if thy make sense)
The second table is those proposed by Lloyd, but they have no formal basis in the abstract datatypes:
| 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 | INT |
| RTO | nothing |
| PQ | REAL, INT |
| 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 |
| BAG | SET, LIST |
| PIVL<T> | IVL<TS> |
