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55527368bd
It seems potentially useful to label our shared libraries with version information, now that a facility exists for retrieving that. This patch labels them with the PG_VERSION string. There was some discussion about using semantic versioning conventions, but that doesn't seem terribly helpful for modules with no SQL-level presence; and for those that do have SQL objects, we typically expect them to support multiple revisions of the SQL definitions, so it'd still not be very helpful. I did not label any of src/test/modules/. It seems unnecessary since we don't install those, and besides there ought to be someplace that still provides test coverage for the original PG_MODULE_MAGIC macro. Author: Tom Lane <tgl@sss.pgh.pa.us> Discussion: https://postgr.es/m/dd4d1b59-d0fe-49d5-b28f-1e463b68fa32@gmail.com
85 lines
1.8 KiB
C
85 lines
1.8 KiB
C
/*
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* contrib/btree_gist/btree_gist.c
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*/
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#include "postgres.h"
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#include "access/cmptype.h"
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#include "access/stratnum.h"
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#include "utils/builtins.h"
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PG_MODULE_MAGIC_EXT(
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.name = "btree_gist",
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.version = PG_VERSION
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);
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PG_FUNCTION_INFO_V1(gbt_decompress);
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PG_FUNCTION_INFO_V1(gbtreekey_in);
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PG_FUNCTION_INFO_V1(gbtreekey_out);
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PG_FUNCTION_INFO_V1(gist_stratnum_btree);
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/**************************************************
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* In/Out for keys
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**************************************************/
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Datum
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gbtreekey_in(PG_FUNCTION_ARGS)
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{
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Oid typioparam = PG_GETARG_OID(1);
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ereport(ERROR,
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(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
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errmsg("cannot accept a value of type %s",
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format_type_extended(typioparam, -1,
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FORMAT_TYPE_ALLOW_INVALID))));
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PG_RETURN_VOID(); /* keep compiler quiet */
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}
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Datum
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gbtreekey_out(PG_FUNCTION_ARGS)
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{
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/* Sadly, we do not receive any indication of the specific type */
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ereport(ERROR,
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(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
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errmsg("cannot display a value of type %s", "gbtreekey?")));
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PG_RETURN_VOID(); /* keep compiler quiet */
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}
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/*
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** GiST DeCompress methods
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** do not do anything.
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*/
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Datum
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gbt_decompress(PG_FUNCTION_ARGS)
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{
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PG_RETURN_POINTER(PG_GETARG_POINTER(0));
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}
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/*
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* Returns the btree number for supported operators, otherwise invalid.
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*/
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Datum
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gist_stratnum_btree(PG_FUNCTION_ARGS)
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{
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CompareType cmptype = PG_GETARG_INT32(0);
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switch (cmptype)
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{
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case COMPARE_EQ:
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PG_RETURN_UINT16(BTEqualStrategyNumber);
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case COMPARE_LT:
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PG_RETURN_UINT16(BTLessStrategyNumber);
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case COMPARE_LE:
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PG_RETURN_UINT16(BTLessEqualStrategyNumber);
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case COMPARE_GT:
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PG_RETURN_UINT16(BTGreaterStrategyNumber);
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case COMPARE_GE:
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PG_RETURN_UINT16(BTGreaterEqualStrategyNumber);
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default:
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PG_RETURN_UINT16(InvalidStrategy);
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}
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}
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