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The conventions specified by the GiST SGML documentation were widely ignored. For example, the strategy-number argument for "consistent" and "distance" functions is specified to be a smallint, but most of the built-in support functions declared it as an integer, and for that matter the core code passed it using Int32GetDatum not Int16GetDatum. None of that makes any real difference at runtime, but it's quite confusing for newcomers to the code, and it makes it very hard to write an amvalidate() function that checks support function signatures. So let's try to instill some consistency here. Another similar issue is that the "query" argument is not of a single well-defined type, but could have different types depending on the strategy (corresponding to search operators with different righthand-side argument types). Some of the functions threw up their hands and declared the query argument as being of "internal" type, which surely isn't right ("any" would have been more appropriate); but the majority position seemed to be to declare it as being of the indexed data type, corresponding to a search operator with both input types the same. So I've specified a convention that that's what to do always. Also, the result of the "union" support function actually must be of the index's storage type, but the documentation suggested declaring it to return "internal", and some of the functions followed that. Standardize on telling the truth, instead. Similarly, standardize on declaring the "same" function's inputs as being of the storage type, not "internal". Also, somebody had forgotten to add the "recheck" argument to both the documentation of the "distance" support function and all of their SQL declarations, even though the C code was happily using that argument. Clean that up too. Fix up some other omissions in the docs too, such as documenting that union's second input argument is vestigial. So far as the errors in core function declarations go, we can just fix pg_proc.h and bump catversion. Adjusting the erroneous declarations in contrib modules is more debatable: in principle any change in those scripts should involve an extension version bump, which is a pain. However, since these changes are purely cosmetic and make no functional difference, I think we can get away without doing that. |
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.. | ||
data | ||
expected | ||
sql | ||
.gitignore | ||
btree_bit.c | ||
btree_bytea.c | ||
btree_cash.c | ||
btree_date.c | ||
btree_float4.c | ||
btree_float8.c | ||
btree_gist--1.0--1.1.sql | ||
btree_gist--1.1.sql | ||
btree_gist--unpackaged--1.0.sql | ||
btree_gist.c | ||
btree_gist.control | ||
btree_gist.h | ||
btree_inet.c | ||
btree_int2.c | ||
btree_int4.c | ||
btree_int8.c | ||
btree_interval.c | ||
btree_macaddr.c | ||
btree_numeric.c | ||
btree_oid.c | ||
btree_text.c | ||
btree_time.c | ||
btree_ts.c | ||
btree_utils_num.c | ||
btree_utils_num.h | ||
btree_utils_var.c | ||
btree_utils_var.h | ||
Makefile |