PostgreSQL Source Code git master
funcapi.h File Reference
#include "access/tupdesc.h"
#include "executor/executor.h"
#include "executor/tuptable.h"
#include "fmgr.h"
Include dependency graph for funcapi.h:
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Go to the source code of this file.

Data Structures

struct  AttInMetadata
 
struct  FuncCallContext
 

Macros

#define TupleGetDatum(_slot, _tuple)   HeapTupleGetDatum(_tuple)
 
#define MAT_SRF_USE_EXPECTED_DESC   0x01 /* use expectedDesc as tupdesc. */
 
#define MAT_SRF_BLESS
 
#define SRF_IS_FIRSTCALL()   (fcinfo->flinfo->fn_extra == NULL)
 
#define SRF_FIRSTCALL_INIT()   init_MultiFuncCall(fcinfo)
 
#define SRF_PERCALL_SETUP()   per_MultiFuncCall(fcinfo)
 
#define SRF_RETURN_NEXT(_funcctx, _result)
 
#define SRF_RETURN_NEXT_NULL(_funcctx)
 
#define SRF_RETURN_DONE(_funcctx)
 

Typedefs

typedef struct AttInMetadata AttInMetadata
 
typedef struct FuncCallContext FuncCallContext
 
typedef enum TypeFuncClass TypeFuncClass
 

Enumerations

enum  TypeFuncClass {
  TYPEFUNC_SCALAR , TYPEFUNC_COMPOSITE , TYPEFUNC_COMPOSITE_DOMAIN , TYPEFUNC_RECORD ,
  TYPEFUNC_OTHER
}
 

Functions

TypeFuncClass get_call_result_type (FunctionCallInfo fcinfo, Oid *resultTypeId, TupleDesc *resultTupleDesc)
 
TypeFuncClass get_expr_result_type (Node *expr, Oid *resultTypeId, TupleDesc *resultTupleDesc)
 
TypeFuncClass get_func_result_type (Oid functionId, Oid *resultTypeId, TupleDesc *resultTupleDesc)
 
TupleDesc get_expr_result_tupdesc (Node *expr, bool noError)
 
bool resolve_polymorphic_argtypes (int numargs, Oid *argtypes, char *argmodes, Node *call_expr)
 
int get_func_arg_info (HeapTuple procTup, Oid **p_argtypes, char ***p_argnames, char **p_argmodes)
 
int get_func_input_arg_names (Datum proargnames, Datum proargmodes, char ***arg_names)
 
int get_func_trftypes (HeapTuple procTup, Oid **p_trftypes)
 
char * get_func_result_name (Oid functionId)
 
TupleDesc build_function_result_tupdesc_d (char prokind, Datum proallargtypes, Datum proargmodes, Datum proargnames)
 
TupleDesc build_function_result_tupdesc_t (HeapTuple procTuple)
 
TupleDesc RelationNameGetTupleDesc (const char *relname)
 
TupleDesc TypeGetTupleDesc (Oid typeoid, List *colaliases)
 
TupleDesc BlessTupleDesc (TupleDesc tupdesc)
 
AttInMetadataTupleDescGetAttInMetadata (TupleDesc tupdesc)
 
HeapTuple BuildTupleFromCStrings (AttInMetadata *attinmeta, char **values)
 
Datum HeapTupleHeaderGetDatum (HeapTupleHeader tuple)
 
static Datum HeapTupleGetDatum (const HeapTupleData *tuple)
 
void InitMaterializedSRF (FunctionCallInfo fcinfo, bits32 flags)
 
FuncCallContextinit_MultiFuncCall (PG_FUNCTION_ARGS)
 
FuncCallContextper_MultiFuncCall (PG_FUNCTION_ARGS)
 
void end_MultiFuncCall (PG_FUNCTION_ARGS, FuncCallContext *funcctx)
 
int extract_variadic_args (FunctionCallInfo fcinfo, int variadic_start, bool convert_unknown, Datum **args, Oid **types, bool **nulls)
 

Macro Definition Documentation

◆ MAT_SRF_BLESS

#define MAT_SRF_BLESS
Value:
0x02 /* "Bless" a tuple descriptor with
* BlessTupleDesc(). */

Definition at line 297 of file funcapi.h.

◆ MAT_SRF_USE_EXPECTED_DESC

#define MAT_SRF_USE_EXPECTED_DESC   0x01 /* use expectedDesc as tupdesc. */

Definition at line 296 of file funcapi.h.

◆ SRF_FIRSTCALL_INIT

#define SRF_FIRSTCALL_INIT ( )    init_MultiFuncCall(fcinfo)

Definition at line 306 of file funcapi.h.

◆ SRF_IS_FIRSTCALL

#define SRF_IS_FIRSTCALL ( )    (fcinfo->flinfo->fn_extra == NULL)

Definition at line 304 of file funcapi.h.

◆ SRF_PERCALL_SETUP

#define SRF_PERCALL_SETUP ( )    per_MultiFuncCall(fcinfo)

Definition at line 308 of file funcapi.h.

◆ SRF_RETURN_DONE

#define SRF_RETURN_DONE (   _funcctx)
Value:
do { \
ReturnSetInfo *rsi; \
end_MultiFuncCall(fcinfo, _funcctx); \
rsi = (ReturnSetInfo *) fcinfo->resultinfo; \
rsi->isDone = ExprEndResult; \
} while (0)
@ ExprEndResult
Definition: execnodes.h:323
#define PG_RETURN_NULL()
Definition: fmgr.h:345

Definition at line 328 of file funcapi.h.

◆ SRF_RETURN_NEXT

#define SRF_RETURN_NEXT (   _funcctx,
  _result 
)
Value:
do { \
ReturnSetInfo *rsi; \
(_funcctx)->call_cntr++; \
rsi = (ReturnSetInfo *) fcinfo->resultinfo; \
rsi->isDone = ExprMultipleResult; \
PG_RETURN_DATUM(_result); \
} while (0)
@ ExprMultipleResult
Definition: execnodes.h:322
#define PG_RETURN_DATUM(x)
Definition: fmgr.h:353

Definition at line 310 of file funcapi.h.

◆ SRF_RETURN_NEXT_NULL

#define SRF_RETURN_NEXT_NULL (   _funcctx)
Value:
do { \
ReturnSetInfo *rsi; \
(_funcctx)->call_cntr++; \
rsi = (ReturnSetInfo *) fcinfo->resultinfo; \
rsi->isDone = ExprMultipleResult; \
} while (0)

Definition at line 319 of file funcapi.h.

◆ TupleGetDatum

#define TupleGetDatum (   _slot,
  _tuple 
)    HeapTupleGetDatum(_tuple)

Definition at line 236 of file funcapi.h.

Typedef Documentation

◆ AttInMetadata

typedef struct AttInMetadata AttInMetadata

◆ FuncCallContext

◆ TypeFuncClass

Enumeration Type Documentation

◆ TypeFuncClass

Enumerator
TYPEFUNC_SCALAR 
TYPEFUNC_COMPOSITE 
TYPEFUNC_COMPOSITE_DOMAIN 
TYPEFUNC_RECORD 
TYPEFUNC_OTHER 

Definition at line 146 of file funcapi.h.

147{
148 TYPEFUNC_SCALAR, /* scalar result type */
149 TYPEFUNC_COMPOSITE, /* determinable rowtype result */
150 TYPEFUNC_COMPOSITE_DOMAIN, /* domain over determinable rowtype result */
151 TYPEFUNC_RECORD, /* indeterminate rowtype result */
152 TYPEFUNC_OTHER, /* bogus type, eg pseudotype */
TypeFuncClass
Definition: funcapi.h:147
@ TYPEFUNC_SCALAR
Definition: funcapi.h:148
@ TYPEFUNC_COMPOSITE
Definition: funcapi.h:149
@ TYPEFUNC_RECORD
Definition: funcapi.h:151
@ TYPEFUNC_COMPOSITE_DOMAIN
Definition: funcapi.h:150
@ TYPEFUNC_OTHER
Definition: funcapi.h:152

Function Documentation

◆ BlessTupleDesc()

TupleDesc BlessTupleDesc ( TupleDesc  tupdesc)

◆ build_function_result_tupdesc_d()

TupleDesc build_function_result_tupdesc_d ( char  prokind,
Datum  proallargtypes,
Datum  proargmodes,
Datum  proargnames 
)

Definition at line 1751 of file funcapi.c.

1755{
1756 TupleDesc desc;
1757 ArrayType *arr;
1758 int numargs;
1759 Oid *argtypes;
1760 char *argmodes;
1761 Datum *argnames = NULL;
1762 Oid *outargtypes;
1763 char **outargnames;
1764 int numoutargs;
1765 int nargnames;
1766 int i;
1767
1768 /* Can't have output args if columns are null */
1769 if (proallargtypes == PointerGetDatum(NULL) ||
1770 proargmodes == PointerGetDatum(NULL))
1771 return NULL;
1772
1773 /*
1774 * We expect the arrays to be 1-D arrays of the right types; verify that.
1775 * For the OID and char arrays, we don't need to use deconstruct_array()
1776 * since the array data is just going to look like a C array of values.
1777 */
1778 arr = DatumGetArrayTypeP(proallargtypes); /* ensure not toasted */
1779 numargs = ARR_DIMS(arr)[0];
1780 if (ARR_NDIM(arr) != 1 ||
1781 numargs < 0 ||
1782 ARR_HASNULL(arr) ||
1783 ARR_ELEMTYPE(arr) != OIDOID)
1784 elog(ERROR, "proallargtypes is not a 1-D Oid array or it contains nulls");
1785 argtypes = (Oid *) ARR_DATA_PTR(arr);
1786 arr = DatumGetArrayTypeP(proargmodes); /* ensure not toasted */
1787 if (ARR_NDIM(arr) != 1 ||
1788 ARR_DIMS(arr)[0] != numargs ||
1789 ARR_HASNULL(arr) ||
1790 ARR_ELEMTYPE(arr) != CHAROID)
1791 elog(ERROR, "proargmodes is not a 1-D char array of length %d or it contains nulls",
1792 numargs);
1793 argmodes = (char *) ARR_DATA_PTR(arr);
1794 if (proargnames != PointerGetDatum(NULL))
1795 {
1796 arr = DatumGetArrayTypeP(proargnames); /* ensure not toasted */
1797 if (ARR_NDIM(arr) != 1 ||
1798 ARR_DIMS(arr)[0] != numargs ||
1799 ARR_HASNULL(arr) ||
1800 ARR_ELEMTYPE(arr) != TEXTOID)
1801 elog(ERROR, "proargnames is not a 1-D text array of length %d or it contains nulls",
1802 numargs);
1803 deconstruct_array_builtin(arr, TEXTOID, &argnames, NULL, &nargnames);
1804 Assert(nargnames == numargs);
1805 }
1806
1807 /* zero elements probably shouldn't happen, but handle it gracefully */
1808 if (numargs <= 0)
1809 return NULL;
1810
1811 /* extract output-argument types and names */
1812 outargtypes = (Oid *) palloc(numargs * sizeof(Oid));
1813 outargnames = (char **) palloc(numargs * sizeof(char *));
1814 numoutargs = 0;
1815 for (i = 0; i < numargs; i++)
1816 {
1817 char *pname;
1818
1819 if (argmodes[i] == PROARGMODE_IN ||
1820 argmodes[i] == PROARGMODE_VARIADIC)
1821 continue;
1822 Assert(argmodes[i] == PROARGMODE_OUT ||
1823 argmodes[i] == PROARGMODE_INOUT ||
1824 argmodes[i] == PROARGMODE_TABLE);
1825 outargtypes[numoutargs] = argtypes[i];
1826 if (argnames)
1827 pname = TextDatumGetCString(argnames[i]);
1828 else
1829 pname = NULL;
1830 if (pname == NULL || pname[0] == '\0')
1831 {
1832 /* Parameter is not named, so gin up a column name */
1833 pname = psprintf("column%d", numoutargs + 1);
1834 }
1835 outargnames[numoutargs] = pname;
1836 numoutargs++;
1837 }
1838
1839 /*
1840 * If there is no output argument, or only one, the function does not
1841 * return tuples.
1842 */
1843 if (numoutargs < 2 && prokind != PROKIND_PROCEDURE)
1844 return NULL;
1845
1846 desc = CreateTemplateTupleDesc(numoutargs);
1847 for (i = 0; i < numoutargs; i++)
1848 {
1849 TupleDescInitEntry(desc, i + 1,
1850 outargnames[i],
1851 outargtypes[i],
1852 -1,
1853 0);
1854 }
1855
1856 return desc;
1857}
#define ARR_NDIM(a)
Definition: array.h:290
#define ARR_DATA_PTR(a)
Definition: array.h:322
#define DatumGetArrayTypeP(X)
Definition: array.h:261
#define ARR_ELEMTYPE(a)
Definition: array.h:292
#define ARR_DIMS(a)
Definition: array.h:294
#define ARR_HASNULL(a)
Definition: array.h:291
void deconstruct_array_builtin(ArrayType *array, Oid elmtype, Datum **elemsp, bool **nullsp, int *nelemsp)
Definition: arrayfuncs.c:3697
#define TextDatumGetCString(d)
Definition: builtins.h:98
#define Assert(condition)
Definition: c.h:815
#define ERROR
Definition: elog.h:39
#define elog(elevel,...)
Definition: elog.h:225
int i
Definition: isn.c:72
void * palloc(Size size)
Definition: mcxt.c:1317
static Datum PointerGetDatum(const void *X)
Definition: postgres.h:327
uintptr_t Datum
Definition: postgres.h:69
unsigned int Oid
Definition: postgres_ext.h:32
char * psprintf(const char *fmt,...)
Definition: psprintf.c:43
TupleDesc CreateTemplateTupleDesc(int natts)
Definition: tupdesc.c:164
void TupleDescInitEntry(TupleDesc desc, AttrNumber attributeNumber, const char *attributeName, Oid oidtypeid, int32 typmod, int attdim)
Definition: tupdesc.c:801

References ARR_DATA_PTR, ARR_DIMS, ARR_ELEMTYPE, ARR_HASNULL, ARR_NDIM, Assert, CreateTemplateTupleDesc(), DatumGetArrayTypeP, deconstruct_array_builtin(), elog, ERROR, i, palloc(), PointerGetDatum(), psprintf(), TextDatumGetCString, and TupleDescInitEntry().

Referenced by build_function_result_tupdesc_t(), and ProcedureCreate().

◆ build_function_result_tupdesc_t()

TupleDesc build_function_result_tupdesc_t ( HeapTuple  procTuple)

Definition at line 1705 of file funcapi.c.

1706{
1707 Form_pg_proc procform = (Form_pg_proc) GETSTRUCT(procTuple);
1708 Datum proallargtypes;
1709 Datum proargmodes;
1710 Datum proargnames;
1711 bool isnull;
1712
1713 /* Return NULL if the function isn't declared to return RECORD */
1714 if (procform->prorettype != RECORDOID)
1715 return NULL;
1716
1717 /* If there are no OUT parameters, return NULL */
1718 if (heap_attisnull(procTuple, Anum_pg_proc_proallargtypes, NULL) ||
1719 heap_attisnull(procTuple, Anum_pg_proc_proargmodes, NULL))
1720 return NULL;
1721
1722 /* Get the data out of the tuple */
1723 proallargtypes = SysCacheGetAttrNotNull(PROCOID, procTuple,
1724 Anum_pg_proc_proallargtypes);
1725 proargmodes = SysCacheGetAttrNotNull(PROCOID, procTuple,
1726 Anum_pg_proc_proargmodes);
1727 proargnames = SysCacheGetAttr(PROCOID, procTuple,
1728 Anum_pg_proc_proargnames,
1729 &isnull);
1730 if (isnull)
1731 proargnames = PointerGetDatum(NULL); /* just to be sure */
1732
1733 return build_function_result_tupdesc_d(procform->prokind,
1734 proallargtypes,
1735 proargmodes,
1736 proargnames);
1737}
TupleDesc build_function_result_tupdesc_d(char prokind, Datum proallargtypes, Datum proargmodes, Datum proargnames)
Definition: funcapi.c:1751
bool heap_attisnull(HeapTuple tup, int attnum, TupleDesc tupleDesc)
Definition: heaptuple.c:456
static void * GETSTRUCT(const HeapTupleData *tuple)
Definition: htup_details.h:728
FormData_pg_proc * Form_pg_proc
Definition: pg_proc.h:136
Datum SysCacheGetAttr(int cacheId, HeapTuple tup, AttrNumber attributeNumber, bool *isNull)
Definition: syscache.c:600
Datum SysCacheGetAttrNotNull(int cacheId, HeapTuple tup, AttrNumber attributeNumber)
Definition: syscache.c:631

References build_function_result_tupdesc_d(), GETSTRUCT(), heap_attisnull(), PointerGetDatum(), SysCacheGetAttr(), and SysCacheGetAttrNotNull().

Referenced by CallStmtResultDesc(), internal_get_result_type(), and ProcedureCreate().

◆ BuildTupleFromCStrings()

HeapTuple BuildTupleFromCStrings ( AttInMetadata attinmeta,
char **  values 
)

Definition at line 2322 of file execTuples.c.

2323{
2324 TupleDesc tupdesc = attinmeta->tupdesc;
2325 int natts = tupdesc->natts;
2326 Datum *dvalues;
2327 bool *nulls;
2328 int i;
2329 HeapTuple tuple;
2330
2331 dvalues = (Datum *) palloc(natts * sizeof(Datum));
2332 nulls = (bool *) palloc(natts * sizeof(bool));
2333
2334 /*
2335 * Call the "in" function for each non-dropped attribute, even for nulls,
2336 * to support domains.
2337 */
2338 for (i = 0; i < natts; i++)
2339 {
2340 if (!TupleDescCompactAttr(tupdesc, i)->attisdropped)
2341 {
2342 /* Non-dropped attributes */
2343 dvalues[i] = InputFunctionCall(&attinmeta->attinfuncs[i],
2344 values[i],
2345 attinmeta->attioparams[i],
2346 attinmeta->atttypmods[i]);
2347 if (values[i] != NULL)
2348 nulls[i] = false;
2349 else
2350 nulls[i] = true;
2351 }
2352 else
2353 {
2354 /* Handle dropped attributes by setting to NULL */
2355 dvalues[i] = (Datum) 0;
2356 nulls[i] = true;
2357 }
2358 }
2359
2360 /*
2361 * Form a tuple
2362 */
2363 tuple = heap_form_tuple(tupdesc, dvalues, nulls);
2364
2365 /*
2366 * Release locally palloc'd space. XXX would probably be good to pfree
2367 * values of pass-by-reference datums, as well.
2368 */
2369 pfree(dvalues);
2370 pfree(nulls);
2371
2372 return tuple;
2373}
static Datum values[MAXATTR]
Definition: bootstrap.c:151
Datum InputFunctionCall(FmgrInfo *flinfo, char *str, Oid typioparam, int32 typmod)
Definition: fmgr.c:1530
HeapTuple heap_form_tuple(TupleDesc tupleDescriptor, const Datum *values, const bool *isnull)
Definition: heaptuple.c:1117
void pfree(void *pointer)
Definition: mcxt.c:1521
FmgrInfo * attinfuncs
Definition: funcapi.h:41
TupleDesc tupdesc
Definition: funcapi.h:38
Oid * attioparams
Definition: funcapi.h:44
int32 * atttypmods
Definition: funcapi.h:47
bool attisdropped
Definition: tupdesc.h:77
static CompactAttribute * TupleDescCompactAttr(TupleDesc tupdesc, int i)
Definition: tupdesc.h:169

References AttInMetadata::attinfuncs, AttInMetadata::attioparams, CompactAttribute::attisdropped, AttInMetadata::atttypmods, heap_form_tuple(), i, InputFunctionCall(), TupleDescData::natts, palloc(), pfree(), AttInMetadata::tupdesc, TupleDescCompactAttr(), and values.

Referenced by bt_metap(), bt_multi_page_stats(), bt_page_stats_internal(), build_pgstattuple_type(), build_tuplestore_recursively(), crosstab(), dblink_get_pkey(), get_crosstab_tuplestore(), libpqrcv_processTuples(), materializeResult(), pg_get_keywords(), pg_get_multixact_members(), pgp_armor_headers(), pgrowlocks(), pgstatindex_impl(), pltcl_build_tuple_result(), prs_process_call(), show_all_settings(), storeRow(), ts_process_call(), tt_process_call(), and xpath_table().

◆ end_MultiFuncCall()

void end_MultiFuncCall ( PG_FUNCTION_ARGS  ,
FuncCallContext funcctx 
)

Definition at line 220 of file funcapi.c.

221{
222 ReturnSetInfo *rsi = (ReturnSetInfo *) fcinfo->resultinfo;
223
224 /* Deregister the shutdown callback */
227 PointerGetDatum(fcinfo->flinfo));
228
229 /* But use it to do the real work */
231}
void UnregisterExprContextCallback(ExprContext *econtext, ExprContextCallbackFunction function, Datum arg)
Definition: execUtils.c:979
static void shutdown_MultiFuncCall(Datum arg)
Definition: funcapi.c:238
ExprContext * econtext
Definition: execnodes.h:350

References ReturnSetInfo::econtext, PointerGetDatum(), shutdown_MultiFuncCall(), and UnregisterExprContextCallback().

◆ extract_variadic_args()

int extract_variadic_args ( FunctionCallInfo  fcinfo,
int  variadic_start,
bool  convert_unknown,
Datum **  args,
Oid **  types,
bool **  nulls 
)

Definition at line 2005 of file funcapi.c.

2008{
2009 bool variadic = get_fn_expr_variadic(fcinfo->flinfo);
2010 Datum *args_res;
2011 bool *nulls_res;
2012 Oid *types_res;
2013 int nargs,
2014 i;
2015
2016 *args = NULL;
2017 *types = NULL;
2018 *nulls = NULL;
2019
2020 if (variadic)
2021 {
2023 Oid element_type;
2024 bool typbyval;
2025 char typalign;
2026 int16 typlen;
2027
2028 Assert(PG_NARGS() == variadic_start + 1);
2029
2030 if (PG_ARGISNULL(variadic_start))
2031 return -1;
2032
2033 array_in = PG_GETARG_ARRAYTYPE_P(variadic_start);
2034 element_type = ARR_ELEMTYPE(array_in);
2035
2036 get_typlenbyvalalign(element_type,
2037 &typlen, &typbyval, &typalign);
2038 deconstruct_array(array_in, element_type, typlen, typbyval,
2039 typalign, &args_res, &nulls_res,
2040 &nargs);
2041
2042 /* All the elements of the array have the same type */
2043 types_res = (Oid *) palloc0(nargs * sizeof(Oid));
2044 for (i = 0; i < nargs; i++)
2045 types_res[i] = element_type;
2046 }
2047 else
2048 {
2049 nargs = PG_NARGS() - variadic_start;
2050 Assert(nargs > 0);
2051 nulls_res = (bool *) palloc0(nargs * sizeof(bool));
2052 args_res = (Datum *) palloc0(nargs * sizeof(Datum));
2053 types_res = (Oid *) palloc0(nargs * sizeof(Oid));
2054
2055 for (i = 0; i < nargs; i++)
2056 {
2057 nulls_res[i] = PG_ARGISNULL(i + variadic_start);
2058 types_res[i] = get_fn_expr_argtype(fcinfo->flinfo,
2059 i + variadic_start);
2060
2061 /*
2062 * Turn a constant (more or less literal) value that's of unknown
2063 * type into text if required. Unknowns come in as a cstring
2064 * pointer. Note: for functions declared as taking type "any", the
2065 * parser will not do any type conversion on unknown-type literals
2066 * (that is, undecorated strings or NULLs).
2067 */
2068 if (convert_unknown &&
2069 types_res[i] == UNKNOWNOID &&
2070 get_fn_expr_arg_stable(fcinfo->flinfo, i + variadic_start))
2071 {
2072 types_res[i] = TEXTOID;
2073
2074 if (PG_ARGISNULL(i + variadic_start))
2075 args_res[i] = (Datum) 0;
2076 else
2077 args_res[i] =
2078 CStringGetTextDatum(PG_GETARG_POINTER(i + variadic_start));
2079 }
2080 else
2081 {
2082 /* no conversion needed, just take the datum as given */
2083 args_res[i] = PG_GETARG_DATUM(i + variadic_start);
2084 }
2085
2086 if (!OidIsValid(types_res[i]) ||
2087 (convert_unknown && types_res[i] == UNKNOWNOID))
2088 ereport(ERROR,
2089 (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
2090 errmsg("could not determine data type for argument %d",
2091 i + 1)));
2092 }
2093 }
2094
2095 /* Fill in results */
2096 *args = args_res;
2097 *nulls = nulls_res;
2098 *types = types_res;
2099
2100 return nargs;
2101}
#define PG_GETARG_ARRAYTYPE_P(n)
Definition: array.h:263
void deconstruct_array(ArrayType *array, Oid elmtype, int elmlen, bool elmbyval, char elmalign, Datum **elemsp, bool **nullsp, int *nelemsp)
Definition: arrayfuncs.c:3631
Datum array_in(PG_FUNCTION_ARGS)
Definition: arrayfuncs.c:179
#define CStringGetTextDatum(s)
Definition: builtins.h:97
int16_t int16
Definition: c.h:483
#define OidIsValid(objectId)
Definition: c.h:732
struct typedefs * types
Definition: ecpg.c:30
int errcode(int sqlerrcode)
Definition: elog.c:853
int errmsg(const char *fmt,...)
Definition: elog.c:1070
#define ereport(elevel,...)
Definition: elog.h:149
bool get_fn_expr_arg_stable(FmgrInfo *flinfo, int argnum)
Definition: fmgr.c:1975
bool get_fn_expr_variadic(FmgrInfo *flinfo)
Definition: fmgr.c:2044
Oid get_fn_expr_argtype(FmgrInfo *flinfo, int argnum)
Definition: fmgr.c:1910
#define PG_GETARG_POINTER(n)
Definition: fmgr.h:276
#define PG_ARGISNULL(n)
Definition: fmgr.h:209
#define PG_GETARG_DATUM(n)
Definition: fmgr.h:268
#define PG_NARGS()
Definition: fmgr.h:203
void get_typlenbyvalalign(Oid typid, int16 *typlen, bool *typbyval, char *typalign)
Definition: lsyscache.c:2298
void * palloc0(Size size)
Definition: mcxt.c:1347
char typalign
Definition: pg_type.h:176
FmgrInfo * flinfo
Definition: fmgr.h:87

References generate_unaccent_rules::args, ARR_ELEMTYPE, array_in(), Assert, CStringGetTextDatum, deconstruct_array(), ereport, errcode(), errmsg(), ERROR, FunctionCallInfoBaseData::flinfo, get_fn_expr_arg_stable(), get_fn_expr_argtype(), get_fn_expr_variadic(), get_typlenbyvalalign(), i, OidIsValid, palloc0(), PG_ARGISNULL, PG_GETARG_ARRAYTYPE_P, PG_GETARG_DATUM, PG_GETARG_POINTER, PG_NARGS, typalign, and types.

Referenced by json_build_array(), json_build_object(), jsonb_build_array(), jsonb_build_object(), and stats_fill_fcinfo_from_arg_pairs().

◆ get_call_result_type()

TypeFuncClass get_call_result_type ( FunctionCallInfo  fcinfo,
Oid resultTypeId,
TupleDesc resultTupleDesc 
)

Definition at line 276 of file funcapi.c.

279{
280 return internal_get_result_type(fcinfo->flinfo->fn_oid,
281 fcinfo->flinfo->fn_expr,
282 (ReturnSetInfo *) fcinfo->resultinfo,
283 resultTypeId,
284 resultTupleDesc);
285}
static TypeFuncClass internal_get_result_type(Oid funcid, Node *call_expr, ReturnSetInfo *rsinfo, Oid *resultTypeId, TupleDesc *resultTupleDesc)
Definition: funcapi.c:430
fmNodePtr fn_expr
Definition: fmgr.h:66
Oid fn_oid
Definition: fmgr.h:59
fmNodePtr resultinfo
Definition: fmgr.h:89

References FunctionCallInfoBaseData::flinfo, FmgrInfo::fn_expr, FmgrInfo::fn_oid, internal_get_result_type(), and FunctionCallInfoBaseData::resultinfo.

Referenced by brin_metapage_info(), bt_metap(), bt_multi_page_stats(), bt_page_items_bytea(), bt_page_items_internal(), bt_page_stats_internal(), build_pgstattuple_type(), copy_replication_slot(), crosstab(), get_record_type_from_query(), gin_leafpage_items(), gin_metapage_info(), gin_page_opaque_info(), gist_page_opaque_info(), hash_bitmap_info(), hash_metapage_info(), hash_page_items(), hash_page_stats(), heap_page_items(), heap_tuple_infomask_flags(), init_sql_fcache(), InitMaterializedSRF(), materializeResult(), page_header(), pg_backup_stop(), pg_buffercache_pages(), pg_buffercache_summary(), pg_control_checkpoint(), pg_control_init(), pg_control_recovery(), pg_control_system(), pg_create_logical_replication_slot(), pg_create_physical_replication_slot(), pg_get_catalog_foreign_keys(), pg_get_keywords(), pg_get_logical_snapshot_info(), pg_get_logical_snapshot_meta(), pg_get_multixact_members(), pg_get_object_address(), pg_get_wal_record_info(), pg_get_wal_summarizer_state(), pg_identify_object(), pg_identify_object_as_address(), pg_input_error_info(), pg_last_committed_xact(), pg_partition_tree(), pg_replication_slot_advance(), pg_sequence_parameters(), pg_split_walfile_name(), pg_stat_get_wal_receiver(), pg_stat_statements_info(), pg_stats_ext_mcvlist_items(), pg_timezone_abbrevs_abbrevs(), pg_timezone_abbrevs_zone(), pg_visibility_map_summary(), pg_xact_commit_timestamp_origin(), pgp_armor_headers(), pgstatginindex_internal(), pgstathashindex(), pgstatindex_impl(), pgstattuple_approx_internal(), plperl_return_next_internal(), plperl_sv_to_datum(), plpgsql_exec_function(), pltcl_func_handler(), PLy_exec_function(), prs_setup_firstcall(), setup_firstcall(), ssl_extension_info(), storeRow(), test_enc_conversion(), ts_setup_firstcall(), tsvector_unnest(), and tt_setup_firstcall().

◆ get_expr_result_tupdesc()

TupleDesc get_expr_result_tupdesc ( Node expr,
bool  noError 
)

Definition at line 551 of file funcapi.c.

552{
553 TupleDesc tupleDesc;
554 TypeFuncClass functypclass;
555
556 functypclass = get_expr_result_type(expr, NULL, &tupleDesc);
557
558 if (functypclass == TYPEFUNC_COMPOSITE ||
559 functypclass == TYPEFUNC_COMPOSITE_DOMAIN)
560 return tupleDesc;
561
562 if (!noError)
563 {
564 Oid exprTypeId = exprType(expr);
565
566 if (exprTypeId != RECORDOID)
568 (errcode(ERRCODE_WRONG_OBJECT_TYPE),
569 errmsg("type %s is not composite",
570 format_type_be(exprTypeId))));
571 else
573 (errcode(ERRCODE_WRONG_OBJECT_TYPE),
574 errmsg("record type has not been registered")));
575 }
576
577 return NULL;
578}
char * format_type_be(Oid type_oid)
Definition: format_type.c:343
TypeFuncClass get_expr_result_type(Node *expr, Oid *resultTypeId, TupleDesc *resultTupleDesc)
Definition: funcapi.c:299
Oid exprType(const Node *expr)
Definition: nodeFuncs.c:42

References ereport, errcode(), errmsg(), ERROR, exprType(), format_type_be(), get_expr_result_type(), TYPEFUNC_COMPOSITE, and TYPEFUNC_COMPOSITE_DOMAIN.

Referenced by expandRecordVariable(), ExpandRowReference(), get_name_for_var_field(), get_rte_attribute_is_dropped(), ParseComplexProjection(), and process_function_rte_ref().

◆ get_expr_result_type()

TypeFuncClass get_expr_result_type ( Node expr,
Oid resultTypeId,
TupleDesc resultTupleDesc 
)

Definition at line 299 of file funcapi.c.

302{
303 TypeFuncClass result;
304
305 if (expr && IsA(expr, FuncExpr))
306 result = internal_get_result_type(((FuncExpr *) expr)->funcid,
307 expr,
308 NULL,
309 resultTypeId,
310 resultTupleDesc);
311 else if (expr && IsA(expr, OpExpr))
312 result = internal_get_result_type(get_opcode(((OpExpr *) expr)->opno),
313 expr,
314 NULL,
315 resultTypeId,
316 resultTupleDesc);
317 else if (expr && IsA(expr, RowExpr) &&
318 ((RowExpr *) expr)->row_typeid == RECORDOID)
319 {
320 /* We can resolve the record type by generating the tupdesc directly */
321 RowExpr *rexpr = (RowExpr *) expr;
322 TupleDesc tupdesc;
323 AttrNumber i = 1;
324 ListCell *lcc,
325 *lcn;
326
327 tupdesc = CreateTemplateTupleDesc(list_length(rexpr->args));
328 Assert(list_length(rexpr->args) == list_length(rexpr->colnames));
329 forboth(lcc, rexpr->args, lcn, rexpr->colnames)
330 {
331 Node *col = (Node *) lfirst(lcc);
332 char *colname = strVal(lfirst(lcn));
333
334 TupleDescInitEntry(tupdesc, i,
335 colname,
336 exprType(col),
337 exprTypmod(col),
338 0);
340 exprCollation(col));
341 i++;
342 }
343 if (resultTypeId)
344 *resultTypeId = rexpr->row_typeid;
345 if (resultTupleDesc)
346 *resultTupleDesc = BlessTupleDesc(tupdesc);
347 return TYPEFUNC_COMPOSITE;
348 }
349 else if (expr && IsA(expr, Const) &&
350 ((Const *) expr)->consttype == RECORDOID &&
351 !((Const *) expr)->constisnull)
352 {
353 /*
354 * When EXPLAIN'ing some queries with SEARCH/CYCLE clauses, we may
355 * need to resolve field names of a RECORD-type Const. The datum
356 * should contain a typmod that will tell us that.
357 */
358 HeapTupleHeader rec;
359 Oid tupType;
360 int32 tupTypmod;
361
362 rec = DatumGetHeapTupleHeader(((Const *) expr)->constvalue);
363 tupType = HeapTupleHeaderGetTypeId(rec);
364 tupTypmod = HeapTupleHeaderGetTypMod(rec);
365 if (resultTypeId)
366 *resultTypeId = tupType;
367 if (tupType != RECORDOID || tupTypmod >= 0)
368 {
369 /* Should be able to look it up */
370 if (resultTupleDesc)
371 *resultTupleDesc = lookup_rowtype_tupdesc_copy(tupType,
372 tupTypmod);
373 return TYPEFUNC_COMPOSITE;
374 }
375 else
376 {
377 /* This shouldn't really happen ... */
378 if (resultTupleDesc)
379 *resultTupleDesc = NULL;
380 return TYPEFUNC_RECORD;
381 }
382 }
383 else
384 {
385 /* handle as a generic expression; no chance to resolve RECORD */
386 Oid typid = exprType(expr);
387 Oid base_typid;
388
389 if (resultTypeId)
390 *resultTypeId = typid;
391 if (resultTupleDesc)
392 *resultTupleDesc = NULL;
393 result = get_type_func_class(typid, &base_typid);
394 if ((result == TYPEFUNC_COMPOSITE ||
395 result == TYPEFUNC_COMPOSITE_DOMAIN) &&
396 resultTupleDesc)
397 *resultTupleDesc = lookup_rowtype_tupdesc_copy(base_typid, -1);
398 }
399
400 return result;
401}
int16 AttrNumber
Definition: attnum.h:21
int32_t int32
Definition: c.h:484
TupleDesc BlessTupleDesc(TupleDesc tupdesc)
Definition: execTuples.c:2258
#define DatumGetHeapTupleHeader(X)
Definition: fmgr.h:295
static TypeFuncClass get_type_func_class(Oid typid, Oid *base_typeid)
Definition: funcapi.c:1328
static int32 HeapTupleHeaderGetTypMod(const HeapTupleHeaderData *tup)
Definition: htup_details.h:516
static Oid HeapTupleHeaderGetTypeId(const HeapTupleHeaderData *tup)
Definition: htup_details.h:504
RegProcedure get_opcode(Oid opno)
Definition: lsyscache.c:1312
int32 exprTypmod(const Node *expr)
Definition: nodeFuncs.c:301
Oid exprCollation(const Node *expr)
Definition: nodeFuncs.c:821
#define IsA(nodeptr, _type_)
Definition: nodes.h:158
#define lfirst(lc)
Definition: pg_list.h:172
static int list_length(const List *l)
Definition: pg_list.h:152
#define forboth(cell1, list1, cell2, list2)
Definition: pg_list.h:518
Definition: nodes.h:129
List * args
Definition: primnodes.h:1428
void TupleDescInitEntryCollation(TupleDesc desc, AttrNumber attributeNumber, Oid collationid)
Definition: tupdesc.c:985
TupleDesc lookup_rowtype_tupdesc_copy(Oid type_id, int32 typmod)
Definition: typcache.c:1954
#define strVal(v)
Definition: value.h:82

References RowExpr::args, Assert, BlessTupleDesc(), CreateTemplateTupleDesc(), DatumGetHeapTupleHeader, exprCollation(), exprType(), exprTypmod(), forboth, get_opcode(), get_type_func_class(), HeapTupleHeaderGetTypeId(), HeapTupleHeaderGetTypMod(), i, internal_get_result_type(), IsA, lfirst, list_length(), lookup_rowtype_tupdesc_copy(), strVal, TupleDescInitEntry(), TupleDescInitEntryCollation(), TYPEFUNC_COMPOSITE, TYPEFUNC_COMPOSITE_DOMAIN, and TYPEFUNC_RECORD.

Referenced by addRangeTableEntryForFunction(), ExecInitFunctionScan(), expandRTE(), get_expr_result_tupdesc(), init_sexpr(), inline_function(), inline_set_returning_function(), and pull_up_constant_function().

◆ get_func_arg_info()

int get_func_arg_info ( HeapTuple  procTup,
Oid **  p_argtypes,
char ***  p_argnames,
char **  p_argmodes 
)

Definition at line 1379 of file funcapi.c.

1381{
1382 Form_pg_proc procStruct = (Form_pg_proc) GETSTRUCT(procTup);
1383 Datum proallargtypes;
1384 Datum proargmodes;
1385 Datum proargnames;
1386 bool isNull;
1387 ArrayType *arr;
1388 int numargs;
1389 Datum *elems;
1390 int nelems;
1391 int i;
1392
1393 /* First discover the total number of parameters and get their types */
1394 proallargtypes = SysCacheGetAttr(PROCOID, procTup,
1395 Anum_pg_proc_proallargtypes,
1396 &isNull);
1397 if (!isNull)
1398 {
1399 /*
1400 * We expect the arrays to be 1-D arrays of the right types; verify
1401 * that. For the OID and char arrays, we don't need to use
1402 * deconstruct_array() since the array data is just going to look like
1403 * a C array of values.
1404 */
1405 arr = DatumGetArrayTypeP(proallargtypes); /* ensure not toasted */
1406 numargs = ARR_DIMS(arr)[0];
1407 if (ARR_NDIM(arr) != 1 ||
1408 numargs < 0 ||
1409 ARR_HASNULL(arr) ||
1410 ARR_ELEMTYPE(arr) != OIDOID)
1411 elog(ERROR, "proallargtypes is not a 1-D Oid array or it contains nulls");
1412 Assert(numargs >= procStruct->pronargs);
1413 *p_argtypes = (Oid *) palloc(numargs * sizeof(Oid));
1414 memcpy(*p_argtypes, ARR_DATA_PTR(arr),
1415 numargs * sizeof(Oid));
1416 }
1417 else
1418 {
1419 /* If no proallargtypes, use proargtypes */
1420 numargs = procStruct->proargtypes.dim1;
1421 Assert(numargs == procStruct->pronargs);
1422 *p_argtypes = (Oid *) palloc(numargs * sizeof(Oid));
1423 memcpy(*p_argtypes, procStruct->proargtypes.values,
1424 numargs * sizeof(Oid));
1425 }
1426
1427 /* Get argument names, if available */
1428 proargnames = SysCacheGetAttr(PROCOID, procTup,
1429 Anum_pg_proc_proargnames,
1430 &isNull);
1431 if (isNull)
1432 *p_argnames = NULL;
1433 else
1434 {
1435 deconstruct_array_builtin(DatumGetArrayTypeP(proargnames), TEXTOID,
1436 &elems, NULL, &nelems);
1437 if (nelems != numargs) /* should not happen */
1438 elog(ERROR, "proargnames must have the same number of elements as the function has arguments");
1439 *p_argnames = (char **) palloc(sizeof(char *) * numargs);
1440 for (i = 0; i < numargs; i++)
1441 (*p_argnames)[i] = TextDatumGetCString(elems[i]);
1442 }
1443
1444 /* Get argument modes, if available */
1445 proargmodes = SysCacheGetAttr(PROCOID, procTup,
1446 Anum_pg_proc_proargmodes,
1447 &isNull);
1448 if (isNull)
1449 *p_argmodes = NULL;
1450 else
1451 {
1452 arr = DatumGetArrayTypeP(proargmodes); /* ensure not toasted */
1453 if (ARR_NDIM(arr) != 1 ||
1454 ARR_DIMS(arr)[0] != numargs ||
1455 ARR_HASNULL(arr) ||
1456 ARR_ELEMTYPE(arr) != CHAROID)
1457 elog(ERROR, "proargmodes is not a 1-D char array of length %d or it contains nulls",
1458 numargs);
1459 *p_argmodes = (char *) palloc(numargs * sizeof(char));
1460 memcpy(*p_argmodes, ARR_DATA_PTR(arr),
1461 numargs * sizeof(char));
1462 }
1463
1464 return numargs;
1465}

References ARR_DATA_PTR, ARR_DIMS, ARR_ELEMTYPE, ARR_HASNULL, ARR_NDIM, Assert, DatumGetArrayTypeP, deconstruct_array_builtin(), elog, ERROR, GETSTRUCT(), i, palloc(), SysCacheGetAttr(), and TextDatumGetCString.

Referenced by do_compile(), make_callstmt_target(), MatchNamedCall(), pg_get_function_arg_default(), plperl_validator(), plpgsql_validator(), plsample_func_handler(), PLy_procedure_create(), print_function_arguments(), and print_function_sqlbody().

◆ get_func_input_arg_names()

int get_func_input_arg_names ( Datum  proargnames,
Datum  proargmodes,
char ***  arg_names 
)

Definition at line 1522 of file funcapi.c.

1524{
1525 ArrayType *arr;
1526 int numargs;
1527 Datum *argnames;
1528 char *argmodes;
1529 char **inargnames;
1530 int numinargs;
1531 int i;
1532
1533 /* Do nothing if null proargnames */
1534 if (proargnames == PointerGetDatum(NULL))
1535 {
1536 *arg_names = NULL;
1537 return 0;
1538 }
1539
1540 /*
1541 * We expect the arrays to be 1-D arrays of the right types; verify that.
1542 * For proargmodes, we don't need to use deconstruct_array() since the
1543 * array data is just going to look like a C array of values.
1544 */
1545 arr = DatumGetArrayTypeP(proargnames); /* ensure not toasted */
1546 if (ARR_NDIM(arr) != 1 ||
1547 ARR_HASNULL(arr) ||
1548 ARR_ELEMTYPE(arr) != TEXTOID)
1549 elog(ERROR, "proargnames is not a 1-D text array or it contains nulls");
1550 deconstruct_array_builtin(arr, TEXTOID, &argnames, NULL, &numargs);
1551 if (proargmodes != PointerGetDatum(NULL))
1552 {
1553 arr = DatumGetArrayTypeP(proargmodes); /* ensure not toasted */
1554 if (ARR_NDIM(arr) != 1 ||
1555 ARR_DIMS(arr)[0] != numargs ||
1556 ARR_HASNULL(arr) ||
1557 ARR_ELEMTYPE(arr) != CHAROID)
1558 elog(ERROR, "proargmodes is not a 1-D char array of length %d or it contains nulls",
1559 numargs);
1560 argmodes = (char *) ARR_DATA_PTR(arr);
1561 }
1562 else
1563 argmodes = NULL;
1564
1565 /* zero elements probably shouldn't happen, but handle it gracefully */
1566 if (numargs <= 0)
1567 {
1568 *arg_names = NULL;
1569 return 0;
1570 }
1571
1572 /* extract input-argument names */
1573 inargnames = (char **) palloc(numargs * sizeof(char *));
1574 numinargs = 0;
1575 for (i = 0; i < numargs; i++)
1576 {
1577 if (argmodes == NULL ||
1578 argmodes[i] == PROARGMODE_IN ||
1579 argmodes[i] == PROARGMODE_INOUT ||
1580 argmodes[i] == PROARGMODE_VARIADIC)
1581 {
1582 char *pname = TextDatumGetCString(argnames[i]);
1583
1584 if (pname[0] != '\0')
1585 inargnames[numinargs] = pname;
1586 else
1587 inargnames[numinargs] = NULL;
1588 numinargs++;
1589 }
1590 }
1591
1592 *arg_names = inargnames;
1593 return numinargs;
1594}

References ARR_DATA_PTR, ARR_DIMS, ARR_ELEMTYPE, ARR_HASNULL, ARR_NDIM, DatumGetArrayTypeP, deconstruct_array_builtin(), elog, ERROR, i, palloc(), PointerGetDatum(), and TextDatumGetCString.

Referenced by prepare_sql_fn_parse_info(), and ProcedureCreate().

◆ get_func_result_name()

char * get_func_result_name ( Oid  functionId)

Definition at line 1607 of file funcapi.c.

1608{
1609 char *result;
1610 HeapTuple procTuple;
1611 Datum proargmodes;
1612 Datum proargnames;
1613 ArrayType *arr;
1614 int numargs;
1615 char *argmodes;
1616 Datum *argnames;
1617 int numoutargs;
1618 int nargnames;
1619 int i;
1620
1621 /* First fetch the function's pg_proc row */
1622 procTuple = SearchSysCache1(PROCOID, ObjectIdGetDatum(functionId));
1623 if (!HeapTupleIsValid(procTuple))
1624 elog(ERROR, "cache lookup failed for function %u", functionId);
1625
1626 /* If there are no named OUT parameters, return NULL */
1627 if (heap_attisnull(procTuple, Anum_pg_proc_proargmodes, NULL) ||
1628 heap_attisnull(procTuple, Anum_pg_proc_proargnames, NULL))
1629 result = NULL;
1630 else
1631 {
1632 /* Get the data out of the tuple */
1633 proargmodes = SysCacheGetAttrNotNull(PROCOID, procTuple,
1634 Anum_pg_proc_proargmodes);
1635 proargnames = SysCacheGetAttrNotNull(PROCOID, procTuple,
1636 Anum_pg_proc_proargnames);
1637
1638 /*
1639 * We expect the arrays to be 1-D arrays of the right types; verify
1640 * that. For the char array, we don't need to use deconstruct_array()
1641 * since the array data is just going to look like a C array of
1642 * values.
1643 */
1644 arr = DatumGetArrayTypeP(proargmodes); /* ensure not toasted */
1645 numargs = ARR_DIMS(arr)[0];
1646 if (ARR_NDIM(arr) != 1 ||
1647 numargs < 0 ||
1648 ARR_HASNULL(arr) ||
1649 ARR_ELEMTYPE(arr) != CHAROID)
1650 elog(ERROR, "proargmodes is not a 1-D char array or it contains nulls");
1651 argmodes = (char *) ARR_DATA_PTR(arr);
1652 arr = DatumGetArrayTypeP(proargnames); /* ensure not toasted */
1653 if (ARR_NDIM(arr) != 1 ||
1654 ARR_DIMS(arr)[0] != numargs ||
1655 ARR_HASNULL(arr) ||
1656 ARR_ELEMTYPE(arr) != TEXTOID)
1657 elog(ERROR, "proargnames is not a 1-D text array of length %d or it contains nulls",
1658 numargs);
1659 deconstruct_array_builtin(arr, TEXTOID, &argnames, NULL, &nargnames);
1660 Assert(nargnames == numargs);
1661
1662 /* scan for output argument(s) */
1663 result = NULL;
1664 numoutargs = 0;
1665 for (i = 0; i < numargs; i++)
1666 {
1667 if (argmodes[i] == PROARGMODE_IN ||
1668 argmodes[i] == PROARGMODE_VARIADIC)
1669 continue;
1670 Assert(argmodes[i] == PROARGMODE_OUT ||
1671 argmodes[i] == PROARGMODE_INOUT ||
1672 argmodes[i] == PROARGMODE_TABLE);
1673 if (++numoutargs > 1)
1674 {
1675 /* multiple out args, so forget it */
1676 result = NULL;
1677 break;
1678 }
1679 result = TextDatumGetCString(argnames[i]);
1680 if (result == NULL || result[0] == '\0')
1681 {
1682 /* Parameter is not named, so forget it */
1683 result = NULL;
1684 break;
1685 }
1686 }
1687 }
1688
1689 ReleaseSysCache(procTuple);
1690
1691 return result;
1692}
#define HeapTupleIsValid(tuple)
Definition: htup.h:78
static Datum ObjectIdGetDatum(Oid X)
Definition: postgres.h:257
void ReleaseSysCache(HeapTuple tuple)
Definition: syscache.c:269
HeapTuple SearchSysCache1(int cacheId, Datum key1)
Definition: syscache.c:221

References ARR_DATA_PTR, ARR_DIMS, ARR_ELEMTYPE, ARR_HASNULL, ARR_NDIM, Assert, DatumGetArrayTypeP, deconstruct_array_builtin(), elog, ERROR, heap_attisnull(), HeapTupleIsValid, i, ObjectIdGetDatum(), ReleaseSysCache(), SearchSysCache1(), SysCacheGetAttrNotNull(), and TextDatumGetCString.

Referenced by chooseScalarFunctionAlias().

◆ get_func_result_type()

TypeFuncClass get_func_result_type ( Oid  functionId,
Oid resultTypeId,
TupleDesc resultTupleDesc 
)

Definition at line 410 of file funcapi.c.

413{
414 return internal_get_result_type(functionId,
415 NULL,
416 NULL,
417 resultTypeId,
418 resultTupleDesc);
419}

References internal_get_result_type().

Referenced by fmgr_sql_validator().

◆ get_func_trftypes()

int get_func_trftypes ( HeapTuple  procTup,
Oid **  p_trftypes 
)

Definition at line 1475 of file funcapi.c.

1477{
1478 Datum protrftypes;
1479 ArrayType *arr;
1480 int nelems;
1481 bool isNull;
1482
1483 protrftypes = SysCacheGetAttr(PROCOID, procTup,
1484 Anum_pg_proc_protrftypes,
1485 &isNull);
1486 if (!isNull)
1487 {
1488 /*
1489 * We expect the arrays to be 1-D arrays of the right types; verify
1490 * that. For the OID and char arrays, we don't need to use
1491 * deconstruct_array() since the array data is just going to look like
1492 * a C array of values.
1493 */
1494 arr = DatumGetArrayTypeP(protrftypes); /* ensure not toasted */
1495 nelems = ARR_DIMS(arr)[0];
1496 if (ARR_NDIM(arr) != 1 ||
1497 nelems < 0 ||
1498 ARR_HASNULL(arr) ||
1499 ARR_ELEMTYPE(arr) != OIDOID)
1500 elog(ERROR, "protrftypes is not a 1-D Oid array or it contains nulls");
1501 *p_trftypes = (Oid *) palloc(nelems * sizeof(Oid));
1502 memcpy(*p_trftypes, ARR_DATA_PTR(arr),
1503 nelems * sizeof(Oid));
1504
1505 return nelems;
1506 }
1507 else
1508 return 0;
1509}

References ARR_DATA_PTR, ARR_DIMS, ARR_ELEMTYPE, ARR_HASNULL, ARR_NDIM, DatumGetArrayTypeP, elog, ERROR, palloc(), and SysCacheGetAttr().

Referenced by print_function_trftypes().

◆ HeapTupleGetDatum()

static Datum HeapTupleGetDatum ( const HeapTupleData tuple)
inlinestatic

Definition at line 230 of file funcapi.h.

231{
232 return HeapTupleHeaderGetDatum(tuple->t_data);
233}
Datum HeapTupleHeaderGetDatum(HeapTupleHeader tuple)
Definition: execTuples.c:2411
HeapTupleHeader t_data
Definition: htup.h:68

References HeapTupleHeaderGetDatum(), and HeapTupleData::t_data.

Referenced by aclexplode(), brin_metapage_info(), bt_metap(), bt_multi_page_stats(), bt_page_print_tuples(), bt_page_stats_internal(), build_pgstattuple_type(), copy_replication_slot(), dblink_get_pkey(), exec_eval_datum(), ExecEvalConvertRowtype(), ExecEvalFieldStoreForm(), ExecEvalRow(), gin_leafpage_items(), gin_metapage_info(), gin_page_opaque_info(), gist_page_opaque_info(), hash_bitmap_info(), hash_metapage_info(), hash_page_items(), hash_page_stats(), heap_page_items(), heap_tuple_infomask_flags(), hstore_each(), hstore_populate_record(), injection_points_stats_fixed(), page_header(), pg_backup_stop(), pg_buffercache_pages(), pg_buffercache_summary(), pg_control_checkpoint(), pg_control_init(), pg_control_recovery(), pg_control_system(), pg_create_logical_replication_slot(), pg_create_physical_replication_slot(), pg_get_catalog_foreign_keys(), pg_get_keywords(), pg_get_logical_snapshot_info(), pg_get_logical_snapshot_meta(), pg_get_multixact_members(), pg_get_object_address(), pg_get_publication_tables(), pg_get_sequence_data(), pg_get_wal_record_info(), pg_get_wal_summarizer_state(), pg_identify_object(), pg_identify_object_as_address(), pg_input_error_info(), pg_last_committed_xact(), pg_lock_status(), pg_partition_tree(), pg_prepared_xact(), pg_replication_slot_advance(), pg_sequence_parameters(), pg_split_walfile_name(), pg_stat_file(), pg_stat_get_archiver(), pg_stat_get_backend_subxact(), pg_stat_get_replication_slot(), pg_stat_get_subscription_stats(), pg_stat_get_wal(), pg_stat_get_wal_receiver(), pg_stat_statements_info(), pg_stats_ext_mcvlist_items(), pg_timezone_abbrevs_abbrevs(), pg_timezone_abbrevs_zone(), pg_visibility(), pg_visibility_map(), pg_visibility_map_rel(), pg_visibility_map_summary(), pg_visibility_rel(), pg_walfile_name_offset(), pg_xact_commit_timestamp_origin(), pgp_armor_headers(), pgstatginindex_internal(), pgstathashindex(), pgstatindex_impl(), pgstattuple_approx_internal(), plperl_hash_to_datum(), plperl_return_next_internal(), pltcl_build_tuple_result(), pltcl_func_handler(), prs_process_call(), show_all_settings(), ssl_extension_info(), test_enc_conversion(), test_predtest(), ts_process_call(), tsvector_unnest(), and tt_process_call().

◆ HeapTupleHeaderGetDatum()

Datum HeapTupleHeaderGetDatum ( HeapTupleHeader  tuple)

Definition at line 2411 of file execTuples.c.

2412{
2413 Datum result;
2414 TupleDesc tupDesc;
2415
2416 /* No work if there are no external TOAST pointers in the tuple */
2417 if (!HeapTupleHeaderHasExternal(tuple))
2418 return PointerGetDatum(tuple);
2419
2420 /* Use the type data saved by heap_form_tuple to look up the rowtype */
2423
2424 /* And do the flattening */
2425 result = toast_flatten_tuple_to_datum(tuple,
2427 tupDesc);
2428
2429 ReleaseTupleDesc(tupDesc);
2430
2431 return result;
2432}
Datum toast_flatten_tuple_to_datum(HeapTupleHeader tup, uint32 tup_len, TupleDesc tupleDesc)
Definition: heaptoast.c:449
static uint32 HeapTupleHeaderGetDatumLength(const HeapTupleHeaderData *tup)
Definition: htup_details.h:492
#define HeapTupleHeaderHasExternal(tup)
Definition: htup_details.h:585
#define ReleaseTupleDesc(tupdesc)
Definition: tupdesc.h:213
TupleDesc lookup_rowtype_tupdesc(Oid type_id, int32 typmod)
Definition: typcache.c:1920

References HeapTupleHeaderGetDatumLength(), HeapTupleHeaderGetTypeId(), HeapTupleHeaderGetTypMod(), HeapTupleHeaderHasExternal, lookup_rowtype_tupdesc(), PointerGetDatum(), ReleaseTupleDesc, and toast_flatten_tuple_to_datum().

Referenced by HeapTupleGetDatum(), populate_composite(), and populate_recordset_record().

◆ init_MultiFuncCall()

FuncCallContext * init_MultiFuncCall ( PG_FUNCTION_ARGS  )

Definition at line 133 of file funcapi.c.

134{
135 FuncCallContext *retval;
136
137 /*
138 * Bail if we're called in the wrong context
139 */
140 if (fcinfo->resultinfo == NULL || !IsA(fcinfo->resultinfo, ReturnSetInfo))
142 (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
143 errmsg("set-valued function called in context that cannot accept a set")));
144
145 if (fcinfo->flinfo->fn_extra == NULL)
146 {
147 /*
148 * First call
149 */
150 ReturnSetInfo *rsi = (ReturnSetInfo *) fcinfo->resultinfo;
151 MemoryContext multi_call_ctx;
152
153 /*
154 * Create a suitably long-lived context to hold cross-call data
155 */
156 multi_call_ctx = AllocSetContextCreate(fcinfo->flinfo->fn_mcxt,
157 "SRF multi-call context",
159
160 /*
161 * Allocate suitably long-lived space and zero it
162 */
163 retval = (FuncCallContext *)
164 MemoryContextAllocZero(multi_call_ctx,
165 sizeof(FuncCallContext));
166
167 /*
168 * initialize the elements
169 */
170 retval->call_cntr = 0;
171 retval->max_calls = 0;
172 retval->user_fctx = NULL;
173 retval->attinmeta = NULL;
174 retval->tuple_desc = NULL;
175 retval->multi_call_memory_ctx = multi_call_ctx;
176
177 /*
178 * save the pointer for cross-call use
179 */
180 fcinfo->flinfo->fn_extra = retval;
181
182 /*
183 * Ensure we will get shut down cleanly if the exprcontext is not run
184 * to completion.
185 */
188 PointerGetDatum(fcinfo->flinfo));
189 }
190 else
191 {
192 /* second and subsequent calls */
193 elog(ERROR, "init_MultiFuncCall cannot be called more than once");
194
195 /* never reached, but keep compiler happy */
196 retval = NULL;
197 }
198
199 return retval;
200}
void RegisterExprContextCallback(ExprContext *econtext, ExprContextCallbackFunction function, Datum arg)
Definition: execUtils.c:953
void * MemoryContextAllocZero(MemoryContext context, Size size)
Definition: mcxt.c:1215
#define AllocSetContextCreate
Definition: memutils.h:129
#define ALLOCSET_SMALL_SIZES
Definition: memutils.h:170
void * user_fctx
Definition: funcapi.h:82
uint64 max_calls
Definition: funcapi.h:74
uint64 call_cntr
Definition: funcapi.h:65
AttInMetadata * attinmeta
Definition: funcapi.h:91
MemoryContext multi_call_memory_ctx
Definition: funcapi.h:101
TupleDesc tuple_desc
Definition: funcapi.h:112

References ALLOCSET_SMALL_SIZES, AllocSetContextCreate, FuncCallContext::attinmeta, FuncCallContext::call_cntr, ReturnSetInfo::econtext, elog, ereport, errcode(), errmsg(), ERROR, IsA, FuncCallContext::max_calls, MemoryContextAllocZero(), FuncCallContext::multi_call_memory_ctx, PointerGetDatum(), RegisterExprContextCallback(), shutdown_MultiFuncCall(), FuncCallContext::tuple_desc, and FuncCallContext::user_fctx.

◆ InitMaterializedSRF()

void InitMaterializedSRF ( FunctionCallInfo  fcinfo,
bits32  flags 
)

Definition at line 76 of file funcapi.c.

77{
78 bool random_access;
79 ReturnSetInfo *rsinfo = (ReturnSetInfo *) fcinfo->resultinfo;
80 Tuplestorestate *tupstore;
81 MemoryContext old_context,
82 per_query_ctx;
83 TupleDesc stored_tupdesc;
84
85 /* check to see if caller supports returning a tuplestore */
86 if (rsinfo == NULL || !IsA(rsinfo, ReturnSetInfo))
88 (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
89 errmsg("set-valued function called in context that cannot accept a set")));
90 if (!(rsinfo->allowedModes & SFRM_Materialize) ||
91 ((flags & MAT_SRF_USE_EXPECTED_DESC) != 0 && rsinfo->expectedDesc == NULL))
93 (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
94 errmsg("materialize mode required, but it is not allowed in this context")));
95
96 /*
97 * Store the tuplestore and the tuple descriptor in ReturnSetInfo. This
98 * must be done in the per-query memory context.
99 */
100 per_query_ctx = rsinfo->econtext->ecxt_per_query_memory;
101 old_context = MemoryContextSwitchTo(per_query_ctx);
102
103 /* build a tuple descriptor for our result type */
104 if ((flags & MAT_SRF_USE_EXPECTED_DESC) != 0)
105 stored_tupdesc = CreateTupleDescCopy(rsinfo->expectedDesc);
106 else
107 {
108 if (get_call_result_type(fcinfo, NULL, &stored_tupdesc) != TYPEFUNC_COMPOSITE)
109 elog(ERROR, "return type must be a row type");
110 }
111
112 /* If requested, bless the tuple descriptor */
113 if ((flags & MAT_SRF_BLESS) != 0)
114 BlessTupleDesc(stored_tupdesc);
115
116 random_access = (rsinfo->allowedModes & SFRM_Materialize_Random) != 0;
117
118 tupstore = tuplestore_begin_heap(random_access, false, work_mem);
120 rsinfo->setResult = tupstore;
121 rsinfo->setDesc = stored_tupdesc;
122 MemoryContextSwitchTo(old_context);
123}
@ SFRM_Materialize_Random
Definition: execnodes.h:336
@ SFRM_Materialize
Definition: execnodes.h:335
TypeFuncClass get_call_result_type(FunctionCallInfo fcinfo, Oid *resultTypeId, TupleDesc *resultTupleDesc)
Definition: funcapi.c:276
#define MAT_SRF_BLESS
Definition: funcapi.h:297
#define MAT_SRF_USE_EXPECTED_DESC
Definition: funcapi.h:296
int work_mem
Definition: globals.c:130
if(TABLE==NULL||TABLE_index==NULL)
Definition: isn.c:76
static MemoryContext MemoryContextSwitchTo(MemoryContext context)
Definition: palloc.h:124
MemoryContext ecxt_per_query_memory
Definition: execnodes.h:274
SetFunctionReturnMode returnMode
Definition: execnodes.h:354
TupleDesc setDesc
Definition: execnodes.h:358
Tuplestorestate * setResult
Definition: execnodes.h:357
TupleDesc expectedDesc
Definition: execnodes.h:351
int allowedModes
Definition: execnodes.h:352
TupleDesc CreateTupleDescCopy(TupleDesc tupdesc)
Definition: tupdesc.c:234
Tuplestorestate * tuplestore_begin_heap(bool randomAccess, bool interXact, int maxKBytes)
Definition: tuplestore.c:330

References ReturnSetInfo::allowedModes, BlessTupleDesc(), CreateTupleDescCopy(), ReturnSetInfo::econtext, ExprContext::ecxt_per_query_memory, elog, ereport, errcode(), errmsg(), ERROR, ReturnSetInfo::expectedDesc, get_call_result_type(), if(), IsA, MAT_SRF_BLESS, MAT_SRF_USE_EXPECTED_DESC, MemoryContextSwitchTo(), FunctionCallInfoBaseData::resultinfo, ReturnSetInfo::returnMode, ReturnSetInfo::setDesc, ReturnSetInfo::setResult, SFRM_Materialize, SFRM_Materialize_Random, tuplestore_begin_heap(), TYPEFUNC_COMPOSITE, and work_mem.

Referenced by brin_page_items(), dblink_get_notify(), each_worker(), each_worker_jsonb(), elements_worker(), elements_worker_jsonb(), get_altertable_subcmdinfo(), GetWALRecordsInfo(), gist_page_items(), gist_page_items_bytea(), pg_available_extension_versions(), pg_available_extensions(), pg_available_wal_summaries(), pg_config(), pg_cursor(), pg_event_trigger_ddl_commands(), pg_event_trigger_dropped_objects(), pg_extension_update_paths(), pg_get_backend_memory_contexts(), pg_get_replication_slots(), pg_get_shmem_allocations(), pg_get_wait_events(), pg_get_wal_block_info(), pg_hba_file_rules(), pg_ident_file_mappings(), pg_logical_slot_get_changes_guts(), pg_ls_dir(), pg_ls_dir_files(), pg_options_to_table(), pg_prepared_statement(), pg_show_replication_origin_status(), pg_stat_get_activity(), pg_stat_get_backend_io(), pg_stat_get_io(), pg_stat_get_progress_info(), pg_stat_get_recovery_prefetch(), pg_stat_get_slru(), pg_stat_get_subscription(), pg_stat_get_wal_senders(), pg_stat_statements_internal(), pg_tablespace_databases(), pg_wal_summary_contents(), pgrowlocks(), postgres_fdw_get_connections_internal(), show_all_file_settings(), text_to_table(), verify_heapam(), and xpath_table().

◆ per_MultiFuncCall()

FuncCallContext * per_MultiFuncCall ( PG_FUNCTION_ARGS  )

Definition at line 208 of file funcapi.c.

209{
210 FuncCallContext *retval = (FuncCallContext *) fcinfo->flinfo->fn_extra;
211
212 return retval;
213}

◆ RelationNameGetTupleDesc()

TupleDesc RelationNameGetTupleDesc ( const char *  relname)

Definition at line 1870 of file funcapi.c.

1871{
1872 RangeVar *relvar;
1873 Relation rel;
1874 TupleDesc tupdesc;
1875 List *relname_list;
1876
1877 /* Open relation and copy the tuple description */
1878 relname_list = stringToQualifiedNameList(relname, NULL);
1879 relvar = makeRangeVarFromNameList(relname_list);
1880 rel = relation_openrv(relvar, AccessShareLock);
1881 tupdesc = CreateTupleDescCopy(RelationGetDescr(rel));
1883
1884 return tupdesc;
1885}
#define AccessShareLock
Definition: lockdefs.h:36
RangeVar * makeRangeVarFromNameList(const List *names)
Definition: namespace.c:3554
NameData relname
Definition: pg_class.h:38
List * stringToQualifiedNameList(const char *string, Node *escontext)
Definition: regproc.c:1797
#define RelationGetDescr(relation)
Definition: rel.h:538
void relation_close(Relation relation, LOCKMODE lockmode)
Definition: relation.c:205
Relation relation_openrv(const RangeVar *relation, LOCKMODE lockmode)
Definition: relation.c:137
Definition: pg_list.h:54

References AccessShareLock, CreateTupleDescCopy(), makeRangeVarFromNameList(), relation_close(), relation_openrv(), RelationGetDescr, relname, and stringToQualifiedNameList().

◆ resolve_polymorphic_argtypes()

bool resolve_polymorphic_argtypes ( int  numargs,
Oid argtypes,
char *  argmodes,
Node call_expr 
)

Definition at line 1064 of file funcapi.c.

1066{
1067 bool have_polymorphic_result = false;
1068 bool have_anyelement_result = false;
1069 bool have_anyarray_result = false;
1070 bool have_anyrange_result = false;
1071 bool have_anymultirange_result = false;
1072 bool have_anycompatible_result = false;
1073 bool have_anycompatible_array_result = false;
1074 bool have_anycompatible_range_result = false;
1075 bool have_anycompatible_multirange_result = false;
1076 polymorphic_actuals poly_actuals;
1077 polymorphic_actuals anyc_actuals;
1078 int inargno;
1079 int i;
1080
1081 /*
1082 * First pass: resolve polymorphic inputs, check for outputs. As in
1083 * resolve_polymorphic_tupdesc, we rely on the parser to have enforced
1084 * type consistency and coerced ANYCOMPATIBLE args to a common supertype.
1085 */
1086 memset(&poly_actuals, 0, sizeof(poly_actuals));
1087 memset(&anyc_actuals, 0, sizeof(anyc_actuals));
1088 inargno = 0;
1089 for (i = 0; i < numargs; i++)
1090 {
1091 char argmode = argmodes ? argmodes[i] : PROARGMODE_IN;
1092
1093 switch (argtypes[i])
1094 {
1095 case ANYELEMENTOID:
1096 case ANYNONARRAYOID:
1097 case ANYENUMOID:
1098 if (argmode == PROARGMODE_OUT || argmode == PROARGMODE_TABLE)
1099 {
1100 have_polymorphic_result = true;
1101 have_anyelement_result = true;
1102 }
1103 else
1104 {
1105 if (!OidIsValid(poly_actuals.anyelement_type))
1106 {
1107 poly_actuals.anyelement_type =
1108 get_call_expr_argtype(call_expr, inargno);
1109 if (!OidIsValid(poly_actuals.anyelement_type))
1110 return false;
1111 }
1112 argtypes[i] = poly_actuals.anyelement_type;
1113 }
1114 break;
1115 case ANYARRAYOID:
1116 if (argmode == PROARGMODE_OUT || argmode == PROARGMODE_TABLE)
1117 {
1118 have_polymorphic_result = true;
1119 have_anyarray_result = true;
1120 }
1121 else
1122 {
1123 if (!OidIsValid(poly_actuals.anyarray_type))
1124 {
1125 poly_actuals.anyarray_type =
1126 get_call_expr_argtype(call_expr, inargno);
1127 if (!OidIsValid(poly_actuals.anyarray_type))
1128 return false;
1129 }
1130 argtypes[i] = poly_actuals.anyarray_type;
1131 }
1132 break;
1133 case ANYRANGEOID:
1134 if (argmode == PROARGMODE_OUT || argmode == PROARGMODE_TABLE)
1135 {
1136 have_polymorphic_result = true;
1137 have_anyrange_result = true;
1138 }
1139 else
1140 {
1141 if (!OidIsValid(poly_actuals.anyrange_type))
1142 {
1143 poly_actuals.anyrange_type =
1144 get_call_expr_argtype(call_expr, inargno);
1145 if (!OidIsValid(poly_actuals.anyrange_type))
1146 return false;
1147 }
1148 argtypes[i] = poly_actuals.anyrange_type;
1149 }
1150 break;
1151 case ANYMULTIRANGEOID:
1152 if (argmode == PROARGMODE_OUT || argmode == PROARGMODE_TABLE)
1153 {
1154 have_polymorphic_result = true;
1155 have_anymultirange_result = true;
1156 }
1157 else
1158 {
1159 if (!OidIsValid(poly_actuals.anymultirange_type))
1160 {
1161 poly_actuals.anymultirange_type =
1162 get_call_expr_argtype(call_expr, inargno);
1163 if (!OidIsValid(poly_actuals.anymultirange_type))
1164 return false;
1165 }
1166 argtypes[i] = poly_actuals.anymultirange_type;
1167 }
1168 break;
1169 case ANYCOMPATIBLEOID:
1170 case ANYCOMPATIBLENONARRAYOID:
1171 if (argmode == PROARGMODE_OUT || argmode == PROARGMODE_TABLE)
1172 {
1173 have_polymorphic_result = true;
1174 have_anycompatible_result = true;
1175 }
1176 else
1177 {
1178 if (!OidIsValid(anyc_actuals.anyelement_type))
1179 {
1180 anyc_actuals.anyelement_type =
1181 get_call_expr_argtype(call_expr, inargno);
1182 if (!OidIsValid(anyc_actuals.anyelement_type))
1183 return false;
1184 }
1185 argtypes[i] = anyc_actuals.anyelement_type;
1186 }
1187 break;
1188 case ANYCOMPATIBLEARRAYOID:
1189 if (argmode == PROARGMODE_OUT || argmode == PROARGMODE_TABLE)
1190 {
1191 have_polymorphic_result = true;
1192 have_anycompatible_array_result = true;
1193 }
1194 else
1195 {
1196 if (!OidIsValid(anyc_actuals.anyarray_type))
1197 {
1198 anyc_actuals.anyarray_type =
1199 get_call_expr_argtype(call_expr, inargno);
1200 if (!OidIsValid(anyc_actuals.anyarray_type))
1201 return false;
1202 }
1203 argtypes[i] = anyc_actuals.anyarray_type;
1204 }
1205 break;
1206 case ANYCOMPATIBLERANGEOID:
1207 if (argmode == PROARGMODE_OUT || argmode == PROARGMODE_TABLE)
1208 {
1209 have_polymorphic_result = true;
1210 have_anycompatible_range_result = true;
1211 }
1212 else
1213 {
1214 if (!OidIsValid(anyc_actuals.anyrange_type))
1215 {
1216 anyc_actuals.anyrange_type =
1217 get_call_expr_argtype(call_expr, inargno);
1218 if (!OidIsValid(anyc_actuals.anyrange_type))
1219 return false;
1220 }
1221 argtypes[i] = anyc_actuals.anyrange_type;
1222 }
1223 break;
1224 case ANYCOMPATIBLEMULTIRANGEOID:
1225 if (argmode == PROARGMODE_OUT || argmode == PROARGMODE_TABLE)
1226 {
1227 have_polymorphic_result = true;
1228 have_anycompatible_multirange_result = true;
1229 }
1230 else
1231 {
1232 if (!OidIsValid(anyc_actuals.anymultirange_type))
1233 {
1234 anyc_actuals.anymultirange_type =
1235 get_call_expr_argtype(call_expr, inargno);
1236 if (!OidIsValid(anyc_actuals.anymultirange_type))
1237 return false;
1238 }
1239 argtypes[i] = anyc_actuals.anymultirange_type;
1240 }
1241 break;
1242 default:
1243 break;
1244 }
1245 if (argmode != PROARGMODE_OUT && argmode != PROARGMODE_TABLE)
1246 inargno++;
1247 }
1248
1249 /* Done? */
1250 if (!have_polymorphic_result)
1251 return true;
1252
1253 /* If needed, deduce one polymorphic type from others */
1254 if (have_anyelement_result && !OidIsValid(poly_actuals.anyelement_type))
1255 resolve_anyelement_from_others(&poly_actuals);
1256
1257 if (have_anyarray_result && !OidIsValid(poly_actuals.anyarray_type))
1258 resolve_anyarray_from_others(&poly_actuals);
1259
1260 if (have_anyrange_result && !OidIsValid(poly_actuals.anyrange_type))
1261 resolve_anyrange_from_others(&poly_actuals);
1262
1263 if (have_anymultirange_result && !OidIsValid(poly_actuals.anymultirange_type))
1264 resolve_anymultirange_from_others(&poly_actuals);
1265
1266 if (have_anycompatible_result && !OidIsValid(anyc_actuals.anyelement_type))
1267 resolve_anyelement_from_others(&anyc_actuals);
1268
1269 if (have_anycompatible_array_result && !OidIsValid(anyc_actuals.anyarray_type))
1270 resolve_anyarray_from_others(&anyc_actuals);
1271
1272 if (have_anycompatible_range_result && !OidIsValid(anyc_actuals.anyrange_type))
1273 resolve_anyrange_from_others(&anyc_actuals);
1274
1275 if (have_anycompatible_multirange_result && !OidIsValid(anyc_actuals.anymultirange_type))
1276 resolve_anymultirange_from_others(&anyc_actuals);
1277
1278 /* And finally replace the output column types as needed */
1279 for (i = 0; i < numargs; i++)
1280 {
1281 switch (argtypes[i])
1282 {
1283 case ANYELEMENTOID:
1284 case ANYNONARRAYOID:
1285 case ANYENUMOID:
1286 argtypes[i] = poly_actuals.anyelement_type;
1287 break;
1288 case ANYARRAYOID:
1289 argtypes[i] = poly_actuals.anyarray_type;
1290 break;
1291 case ANYRANGEOID:
1292 argtypes[i] = poly_actuals.anyrange_type;
1293 break;
1294 case ANYMULTIRANGEOID:
1295 argtypes[i] = poly_actuals.anymultirange_type;
1296 break;
1297 case ANYCOMPATIBLEOID:
1298 case ANYCOMPATIBLENONARRAYOID:
1299 argtypes[i] = anyc_actuals.anyelement_type;
1300 break;
1301 case ANYCOMPATIBLEARRAYOID:
1302 argtypes[i] = anyc_actuals.anyarray_type;
1303 break;
1304 case ANYCOMPATIBLERANGEOID:
1305 argtypes[i] = anyc_actuals.anyrange_type;
1306 break;
1307 case ANYCOMPATIBLEMULTIRANGEOID:
1308 argtypes[i] = anyc_actuals.anymultirange_type;
1309 break;
1310 default:
1311 break;
1312 }
1313 }
1314
1315 return true;
1316}
Oid get_call_expr_argtype(Node *expr, int argnum)
Definition: fmgr.c:1929
static void resolve_anyelement_from_others(polymorphic_actuals *actuals)
Definition: funcapi.c:589
static void resolve_anyrange_from_others(polymorphic_actuals *actuals)
Definition: funcapi.c:681
static void resolve_anymultirange_from_others(polymorphic_actuals *actuals)
Definition: funcapi.c:710
static void resolve_anyarray_from_others(polymorphic_actuals *actuals)
Definition: funcapi.c:655
Oid anymultirange_type
Definition: funcapi.c:40

References polymorphic_actuals::anyarray_type, polymorphic_actuals::anyelement_type, polymorphic_actuals::anymultirange_type, polymorphic_actuals::anyrange_type, get_call_expr_argtype(), i, OidIsValid, resolve_anyarray_from_others(), resolve_anyelement_from_others(), resolve_anymultirange_from_others(), and resolve_anyrange_from_others().

Referenced by plpgsql_resolve_polymorphic_argtypes().

◆ TupleDescGetAttInMetadata()

AttInMetadata * TupleDescGetAttInMetadata ( TupleDesc  tupdesc)

Definition at line 2273 of file execTuples.c.

2274{
2275 int natts = tupdesc->natts;
2276 int i;
2277 Oid atttypeid;
2278 Oid attinfuncid;
2279 FmgrInfo *attinfuncinfo;
2280 Oid *attioparams;
2281 int32 *atttypmods;
2282 AttInMetadata *attinmeta;
2283
2284 attinmeta = (AttInMetadata *) palloc(sizeof(AttInMetadata));
2285
2286 /* "Bless" the tupledesc so that we can make rowtype datums with it */
2287 attinmeta->tupdesc = BlessTupleDesc(tupdesc);
2288
2289 /*
2290 * Gather info needed later to call the "in" function for each attribute
2291 */
2292 attinfuncinfo = (FmgrInfo *) palloc0(natts * sizeof(FmgrInfo));
2293 attioparams = (Oid *) palloc0(natts * sizeof(Oid));
2294 atttypmods = (int32 *) palloc0(natts * sizeof(int32));
2295
2296 for (i = 0; i < natts; i++)
2297 {
2298 Form_pg_attribute att = TupleDescAttr(tupdesc, i);
2299
2300 /* Ignore dropped attributes */
2301 if (!att->attisdropped)
2302 {
2303 atttypeid = att->atttypid;
2304 getTypeInputInfo(atttypeid, &attinfuncid, &attioparams[i]);
2305 fmgr_info(attinfuncid, &attinfuncinfo[i]);
2306 atttypmods[i] = att->atttypmod;
2307 }
2308 }
2309 attinmeta->attinfuncs = attinfuncinfo;
2310 attinmeta->attioparams = attioparams;
2311 attinmeta->atttypmods = atttypmods;
2312
2313 return attinmeta;
2314}
void fmgr_info(Oid functionId, FmgrInfo *finfo)
Definition: fmgr.c:127
void getTypeInputInfo(Oid type, Oid *typInput, Oid *typIOParam)
Definition: lsyscache.c:2901
FormData_pg_attribute * Form_pg_attribute
Definition: pg_attribute.h:200
Definition: fmgr.h:57
static FormData_pg_attribute * TupleDescAttr(TupleDesc tupdesc, int i)
Definition: tupdesc.h:154

References AttInMetadata::attinfuncs, AttInMetadata::attioparams, AttInMetadata::atttypmods, BlessTupleDesc(), fmgr_info(), getTypeInputInfo(), i, TupleDescData::natts, palloc(), palloc0(), AttInMetadata::tupdesc, and TupleDescAttr().

Referenced by bt_metap(), bt_multi_page_stats(), bt_page_stats_internal(), build_pgstattuple_type(), connectby_text(), connectby_text_serial(), create_foreign_modify(), crosstab(), dblink_get_pkey(), get_crosstab_tuplestore(), hash_page_items(), libpqrcv_processTuples(), materializeResult(), pg_get_keywords(), pg_get_multixact_members(), pg_stats_ext_mcvlist_items(), pgp_armor_headers(), pgrowlocks(), pgstatindex_impl(), pltcl_build_tuple_result(), pltcl_func_handler(), pltcl_init_tuple_store(), postgresAcquireSampleRowsFunc(), postgresBeginDirectModify(), postgresBeginForeignScan(), prs_setup_firstcall(), show_all_settings(), storeRow(), ts_setup_firstcall(), tt_setup_firstcall(), and xpath_table().

◆ TypeGetTupleDesc()

TupleDesc TypeGetTupleDesc ( Oid  typeoid,
List colaliases 
)

Definition at line 1903 of file funcapi.c.

1904{
1905 Oid base_typeoid;
1906 TypeFuncClass functypclass = get_type_func_class(typeoid, &base_typeoid);
1907 TupleDesc tupdesc = NULL;
1908
1909 /*
1910 * Build a suitable tupledesc representing the output rows. We
1911 * intentionally do not support TYPEFUNC_COMPOSITE_DOMAIN here, as it's
1912 * unlikely that legacy callers of this obsolete function would be
1913 * prepared to apply domain constraints.
1914 */
1915 if (functypclass == TYPEFUNC_COMPOSITE)
1916 {
1917 /* Composite data type, e.g. a table's row type */
1918 tupdesc = lookup_rowtype_tupdesc_copy(base_typeoid, -1);
1919
1920 if (colaliases != NIL)
1921 {
1922 int natts = tupdesc->natts;
1923 int varattno;
1924
1925 /* does the list length match the number of attributes? */
1926 if (list_length(colaliases) != natts)
1927 ereport(ERROR,
1928 (errcode(ERRCODE_DATATYPE_MISMATCH),
1929 errmsg("number of aliases does not match number of columns")));
1930
1931 /* OK, use the aliases instead */
1932 for (varattno = 0; varattno < natts; varattno++)
1933 {
1934 char *label = strVal(list_nth(colaliases, varattno));
1935 Form_pg_attribute attr = TupleDescAttr(tupdesc, varattno);
1936
1937 if (label != NULL)
1938 namestrcpy(&(attr->attname), label);
1939 }
1940
1941 /* The tuple type is now an anonymous record type */
1942 tupdesc->tdtypeid = RECORDOID;
1943 tupdesc->tdtypmod = -1;
1944 }
1945 }
1946 else if (functypclass == TYPEFUNC_SCALAR)
1947 {
1948 /* Base data type, i.e. scalar */
1949 char *attname;
1950
1951 /* the alias list is required for base types */
1952 if (colaliases == NIL)
1953 ereport(ERROR,
1954 (errcode(ERRCODE_DATATYPE_MISMATCH),
1955 errmsg("no column alias was provided")));
1956
1957 /* the alias list length must be 1 */
1958 if (list_length(colaliases) != 1)
1959 ereport(ERROR,
1960 (errcode(ERRCODE_DATATYPE_MISMATCH),
1961 errmsg("number of aliases does not match number of columns")));
1962
1963 /* OK, get the column alias */
1964 attname = strVal(linitial(colaliases));
1965
1966 tupdesc = CreateTemplateTupleDesc(1);
1967 TupleDescInitEntry(tupdesc,
1968 (AttrNumber) 1,
1969 attname,
1970 typeoid,
1971 -1,
1972 0);
1973 }
1974 else if (functypclass == TYPEFUNC_RECORD)
1975 {
1976 /* XXX can't support this because typmod wasn't passed in ... */
1977 ereport(ERROR,
1978 (errcode(ERRCODE_DATATYPE_MISMATCH),
1979 errmsg("could not determine row description for function returning record")));
1980 }
1981 else
1982 {
1983 /* crummy error message, but parser should have caught this */
1984 elog(ERROR, "function in FROM has unsupported return type");
1985 }
1986
1987 return tupdesc;
1988}
void namestrcpy(Name name, const char *str)
Definition: name.c:233
NameData attname
Definition: pg_attribute.h:41
static char * label
#define NIL
Definition: pg_list.h:68
static void * list_nth(const List *list, int n)
Definition: pg_list.h:299
#define linitial(l)
Definition: pg_list.h:178

References attname, CreateTemplateTupleDesc(), elog, ereport, errcode(), errmsg(), ERROR, get_type_func_class(), label, linitial, list_length(), list_nth(), lookup_rowtype_tupdesc_copy(), namestrcpy(), TupleDescData::natts, NIL, strVal, TupleDescData::tdtypeid, TupleDescData::tdtypmod, TupleDescAttr(), TupleDescInitEntry(), TYPEFUNC_COMPOSITE, TYPEFUNC_RECORD, and TYPEFUNC_SCALAR.