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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2017-10-26 13:47:45 -0400 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2017-10-26 13:47:45 -0400 |
| commit | 37a795a60b4f4b1def11c615525ec5e0e9449e05 (patch) | |
| tree | a5aa9d7e51ef4fd0e353223bd691f7e85018a032 /src/include/parser | |
| parent | 08f1e1f0a47b4b0e87b07b9794698747b279c711 (diff) | |
| download | postgresql-37a795a60b4f4b1def11c615525ec5e0e9449e05.tar.gz postgresql-37a795a60b4f4b1def11c615525ec5e0e9449e05.zip | |
Support domains over composite types.
This is the last major omission in our domains feature: you can now
make a domain over anything that's not a pseudotype.
The major complication from an implementation standpoint is that places
that might be creating tuples of a domain type now need to be prepared
to apply domain_check(). It seems better that unprepared code fail
with an error like "<type> is not composite" than that it silently fail
to apply domain constraints. Therefore, relevant infrastructure like
get_func_result_type() and lookup_rowtype_tupdesc() has been adjusted
to treat domain-over-composite as a distinct case that unprepared code
won't recognize, rather than just transparently treating it the same
as plain composite. This isn't a 100% solution to the possibility of
overlooked domain checks, but it catches most places.
In passing, improve typcache.c's support for domains (it can now cache
the identity of a domain's base type), and rewrite the argument handling
logic in jsonfuncs.c's populate_record[set]_worker to reduce duplicative
per-call lookups.
I believe this is code-complete so far as the core and contrib code go.
The PLs need varying amounts of work, which will be tackled in followup
patches.
Discussion: https://postgr.es/m/4206.1499798337@sss.pgh.pa.us
Diffstat (limited to 'src/include/parser')
| -rw-r--r-- | src/include/parser/parse_type.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/include/parser/parse_type.h b/src/include/parser/parse_type.h index 7b843d0b9de..af1e314b21c 100644 --- a/src/include/parser/parse_type.h +++ b/src/include/parser/parse_type.h @@ -46,10 +46,12 @@ extern Oid typeTypeCollation(Type typ); extern Datum stringTypeDatum(Type tp, char *string, int32 atttypmod); extern Oid typeidTypeRelid(Oid type_id); +extern Oid typeOrDomainTypeRelid(Oid type_id); extern TypeName *typeStringToTypeName(const char *str); extern void parseTypeString(const char *str, Oid *typeid_p, int32 *typmod_p, bool missing_ok); -#define ISCOMPLEX(typeid) (typeidTypeRelid(typeid) != InvalidOid) +/* true if typeid is composite, or domain over composite, but not RECORD */ +#define ISCOMPLEX(typeid) (typeOrDomainTypeRelid(typeid) != InvalidOid) #endif /* PARSE_TYPE_H */ |