Header And Logo
|
#include "postgres.h"#include "access/htup_details.h"#include "access/xact.h"#include "catalog/dependency.h"#include "catalog/indexing.h"#include "catalog/objectaccess.h"#include "catalog/pg_language.h"#include "catalog/pg_namespace.h"#include "catalog/pg_proc.h"#include "catalog/pg_proc_fn.h"#include "catalog/pg_type.h"#include "executor/functions.h"#include "funcapi.h"#include "mb/pg_wchar.h"#include "miscadmin.h"#include "nodes/nodeFuncs.h"#include "parser/parse_type.h"#include "tcop/pquery.h"#include "tcop/tcopprot.h"#include "utils/acl.h"#include "utils/builtins.h"#include "utils/lsyscache.h"#include "utils/rel.h"#include "utils/syscache.h"
Go to the source code of this file.
Data Structures | |
| struct | parse_error_callback_arg |
Functions | |
| Datum | fmgr_internal_validator (PG_FUNCTION_ARGS) |
| Datum | fmgr_c_validator (PG_FUNCTION_ARGS) |
| Datum | fmgr_sql_validator (PG_FUNCTION_ARGS) |
| static void | sql_function_parse_error_callback (void *arg) |
| static int | match_prosrc_to_query (const char *prosrc, const char *queryText, int cursorpos) |
| static bool | match_prosrc_to_literal (const char *prosrc, const char *literal, int cursorpos, int *newcursorpos) |
| Oid | ProcedureCreate (const char *procedureName, Oid procNamespace, bool replace, bool returnsSet, Oid returnType, Oid proowner, Oid languageObjectId, Oid languageValidator, const char *prosrc, const char *probin, bool isAgg, bool isWindowFunc, bool security_definer, bool isLeakProof, bool isStrict, char volatility, oidvector *parameterTypes, Datum allParameterTypes, Datum parameterModes, Datum parameterNames, List *parameterDefaults, Datum proconfig, float4 procost, float4 prorows) |
| bool | function_parse_error_transpose (const char *prosrc) |
| Datum fmgr_c_validator | ( | PG_FUNCTION_ARGS | ) |
Definition at line 751 of file pg_proc.c.
References Anum_pg_proc_probin, Anum_pg_proc_prosrc, elog, ERROR, fetch_finfo_record(), HeapTupleIsValid, load_external_function(), ObjectIdGetDatum, PG_GETARG_OID, PG_RETURN_VOID, PROCOID, ReleaseSysCache(), SearchSysCache1, SysCacheGetAttr(), and TextDatumGetCString.
{
Oid funcoid = PG_GETARG_OID(0);
void *libraryhandle;
HeapTuple tuple;
bool isnull;
Datum tmp;
char *prosrc;
char *probin;
/*
* It'd be most consistent to skip the check if !check_function_bodies,
* but the purpose of that switch is to be helpful for pg_dump loading,
* and for pg_dump loading it's much better if we *do* check.
*/
tuple = SearchSysCache1(PROCOID, ObjectIdGetDatum(funcoid));
if (!HeapTupleIsValid(tuple))
elog(ERROR, "cache lookup failed for function %u", funcoid);
tmp = SysCacheGetAttr(PROCOID, tuple, Anum_pg_proc_prosrc, &isnull);
if (isnull)
elog(ERROR, "null prosrc for C function %u", funcoid);
prosrc = TextDatumGetCString(tmp);
tmp = SysCacheGetAttr(PROCOID, tuple, Anum_pg_proc_probin, &isnull);
if (isnull)
elog(ERROR, "null probin for C function %u", funcoid);
probin = TextDatumGetCString(tmp);
(void) load_external_function(probin, prosrc, true, &libraryhandle);
(void) fetch_finfo_record(libraryhandle, prosrc);
ReleaseSysCache(tuple);
PG_RETURN_VOID();
}
| Datum fmgr_internal_validator | ( | PG_FUNCTION_ARGS | ) |
Definition at line 708 of file pg_proc.c.
References Anum_pg_proc_prosrc, elog, ereport, errcode(), errmsg(), ERROR, fmgr_internal_function(), HeapTupleIsValid, InvalidOid, ObjectIdGetDatum, PG_GETARG_OID, PG_RETURN_VOID, PROCOID, ReleaseSysCache(), SearchSysCache1, SysCacheGetAttr(), and TextDatumGetCString.
{
Oid funcoid = PG_GETARG_OID(0);
HeapTuple tuple;
bool isnull;
Datum tmp;
char *prosrc;
/*
* We do not honor check_function_bodies since it's unlikely the function
* name will be found later if it isn't there now.
*/
tuple = SearchSysCache1(PROCOID, ObjectIdGetDatum(funcoid));
if (!HeapTupleIsValid(tuple))
elog(ERROR, "cache lookup failed for function %u", funcoid);
tmp = SysCacheGetAttr(PROCOID, tuple, Anum_pg_proc_prosrc, &isnull);
if (isnull)
elog(ERROR, "null prosrc");
prosrc = TextDatumGetCString(tmp);
if (fmgr_internal_function(prosrc) == InvalidOid)
ereport(ERROR,
(errcode(ERRCODE_UNDEFINED_FUNCTION),
errmsg("there is no built-in function named \"%s\"",
prosrc)));
ReleaseSysCache(tuple);
PG_RETURN_VOID();
}
| Datum fmgr_sql_validator | ( | PG_FUNCTION_ARGS | ) |
Definition at line 796 of file pg_proc.c.
References Anum_pg_proc_prosrc, ErrorContextCallback::arg, ErrorContextCallback::callback, check_function_bodies, check_sql_fn_retval(), elog, ereport, errcode(), errmsg(), ERROR, error_context_stack, format_type_be(), get_typtype(), GETSTRUCT, HeapTupleIsValid, i, InvalidOid, IsPolymorphicType, lfirst, list_concat(), NameStr, NULL, ObjectIdGetDatum, pg_analyze_and_rewrite_params(), PG_GETARG_OID, pg_parse_query(), PG_RETURN_VOID, prepare_sql_fn_parse_info(), ErrorContextCallback::previous, PROCOID, parse_error_callback_arg::proname, parse_error_callback_arg::prosrc, RECORDOID, ReleaseSysCache(), SearchSysCache1, sql_fn_parser_setup(), SysCacheGetAttr(), TextDatumGetCString, TYPTYPE_PSEUDO, and VOIDOID.
{
Oid funcoid = PG_GETARG_OID(0);
HeapTuple tuple;
Form_pg_proc proc;
List *raw_parsetree_list;
List *querytree_list;
ListCell *lc;
bool isnull;
Datum tmp;
char *prosrc;
parse_error_callback_arg callback_arg;
ErrorContextCallback sqlerrcontext;
bool haspolyarg;
int i;
tuple = SearchSysCache1(PROCOID, ObjectIdGetDatum(funcoid));
if (!HeapTupleIsValid(tuple))
elog(ERROR, "cache lookup failed for function %u", funcoid);
proc = (Form_pg_proc) GETSTRUCT(tuple);
/* Disallow pseudotype result */
/* except for RECORD, VOID, or polymorphic */
if (get_typtype(proc->prorettype) == TYPTYPE_PSEUDO &&
proc->prorettype != RECORDOID &&
proc->prorettype != VOIDOID &&
!IsPolymorphicType(proc->prorettype))
ereport(ERROR,
(errcode(ERRCODE_INVALID_FUNCTION_DEFINITION),
errmsg("SQL functions cannot return type %s",
format_type_be(proc->prorettype))));
/* Disallow pseudotypes in arguments */
/* except for polymorphic */
haspolyarg = false;
for (i = 0; i < proc->pronargs; i++)
{
if (get_typtype(proc->proargtypes.values[i]) == TYPTYPE_PSEUDO)
{
if (IsPolymorphicType(proc->proargtypes.values[i]))
haspolyarg = true;
else
ereport(ERROR,
(errcode(ERRCODE_INVALID_FUNCTION_DEFINITION),
errmsg("SQL functions cannot have arguments of type %s",
format_type_be(proc->proargtypes.values[i]))));
}
}
/* Postpone body checks if !check_function_bodies */
if (check_function_bodies)
{
tmp = SysCacheGetAttr(PROCOID, tuple, Anum_pg_proc_prosrc, &isnull);
if (isnull)
elog(ERROR, "null prosrc");
prosrc = TextDatumGetCString(tmp);
/*
* Setup error traceback support for ereport().
*/
callback_arg.proname = NameStr(proc->proname);
callback_arg.prosrc = prosrc;
sqlerrcontext.callback = sql_function_parse_error_callback;
sqlerrcontext.arg = (void *) &callback_arg;
sqlerrcontext.previous = error_context_stack;
error_context_stack = &sqlerrcontext;
/*
* We can't do full prechecking of the function definition if there
* are any polymorphic input types, because actual datatypes of
* expression results will be unresolvable. The check will be done at
* runtime instead.
*
* We can run the text through the raw parser though; this will at
* least catch silly syntactic errors.
*/
raw_parsetree_list = pg_parse_query(prosrc);
if (!haspolyarg)
{
/*
* OK to do full precheck: analyze and rewrite the queries, then
* verify the result type.
*/
SQLFunctionParseInfoPtr pinfo;
/* But first, set up parameter information */
pinfo = prepare_sql_fn_parse_info(tuple, NULL, InvalidOid);
querytree_list = NIL;
foreach(lc, raw_parsetree_list)
{
Node *parsetree = (Node *) lfirst(lc);
List *querytree_sublist;
querytree_sublist = pg_analyze_and_rewrite_params(parsetree,
prosrc,
(ParserSetupHook) sql_fn_parser_setup,
pinfo);
querytree_list = list_concat(querytree_list,
querytree_sublist);
}
(void) check_sql_fn_retval(funcoid, proc->prorettype,
querytree_list,
NULL, NULL);
}
error_context_stack = sqlerrcontext.previous;
}
ReleaseSysCache(tuple);
PG_RETURN_VOID();
}
| bool function_parse_error_transpose | ( | const char * | prosrc | ) |
Definition at line 942 of file pg_proc.c.
References ActivePortal, Assert, errposition(), geterrposition(), getinternalerrposition(), internalerrposition(), internalerrquery(), match_prosrc_to_query(), NULL, PORTAL_ACTIVE, PortalData::sourceText, and PortalData::status.
Referenced by plpgsql_compile_error_callback(), and sql_function_parse_error_callback().
{
int origerrposition;
int newerrposition;
const char *queryText;
/*
* Nothing to do unless we are dealing with a syntax error that has a
* cursor position.
*
* Some PLs may prefer to report the error position as an internal error
* to begin with, so check that too.
*/
origerrposition = geterrposition();
if (origerrposition <= 0)
{
origerrposition = getinternalerrposition();
if (origerrposition <= 0)
return false;
}
/* We can get the original query text from the active portal (hack...) */
Assert(ActivePortal && ActivePortal->status == PORTAL_ACTIVE);
queryText = ActivePortal->sourceText;
/* Try to locate the prosrc in the original text */
newerrposition = match_prosrc_to_query(prosrc, queryText, origerrposition);
if (newerrposition > 0)
{
/* Successful, so fix error position to reference original query */
errposition(newerrposition);
/* Get rid of any report of the error as an "internal query" */
internalerrposition(0);
internalerrquery(NULL);
}
else
{
/*
* If unsuccessful, convert the position to an internal position
* marker and give the function text as the internal query.
*/
errposition(0);
internalerrposition(origerrposition);
internalerrquery(prosrc);
}
return true;
}
| static bool match_prosrc_to_literal | ( | const char * | prosrc, | |
| const char * | literal, | |||
| int | cursorpos, | |||
| int * | newcursorpos | |||
| ) | [static] |
Definition at line 1057 of file pg_proc.c.
References pg_mblen().
Referenced by match_prosrc_to_query().
{
int newcp = cursorpos;
int chlen;
/*
* This implementation handles backslashes and doubled quotes in the
* string literal. It does not handle the SQL syntax for literals
* continued across line boundaries.
*
* We do the comparison a character at a time, not a byte at a time, so
* that we can do the correct cursorpos math.
*/
while (*prosrc)
{
cursorpos--; /* characters left before cursor */
/*
* Check for backslashes and doubled quotes in the literal; adjust
* newcp when one is found before the cursor.
*/
if (*literal == '\\')
{
literal++;
if (cursorpos > 0)
newcp++;
}
else if (*literal == '\'')
{
if (literal[1] != '\'')
goto fail;
literal++;
if (cursorpos > 0)
newcp++;
}
chlen = pg_mblen(prosrc);
if (strncmp(prosrc, literal, chlen) != 0)
goto fail;
prosrc += chlen;
literal += chlen;
}
if (*literal == '\'' && literal[1] != '\'')
{
/* success */
*newcursorpos = newcp;
return true;
}
fail:
/* Must set *newcursorpos to suppress compiler warning */
*newcursorpos = newcp;
return false;
}
| static int match_prosrc_to_query | ( | const char * | prosrc, | |
| const char * | queryText, | |||
| int | cursorpos | |||
| ) | [static] |
Definition at line 999 of file pg_proc.c.
References match_prosrc_to_literal(), and pg_mbstrlen_with_len().
Referenced by function_parse_error_transpose().
{
/*
* Rather than fully parsing the original command, we just scan the
* command looking for $prosrc$ or 'prosrc'. This could be fooled (though
* not in any very probable scenarios), so fail if we find more than one
* match.
*/
int prosrclen = strlen(prosrc);
int querylen = strlen(queryText);
int matchpos = 0;
int curpos;
int newcursorpos;
for (curpos = 0; curpos < querylen - prosrclen; curpos++)
{
if (queryText[curpos] == '$' &&
strncmp(prosrc, &queryText[curpos + 1], prosrclen) == 0 &&
queryText[curpos + 1 + prosrclen] == '$')
{
/*
* Found a $foo$ match. Since there are no embedded quoting
* characters in a dollar-quoted literal, we don't have to do any
* fancy arithmetic; just offset by the starting position.
*/
if (matchpos)
return 0; /* multiple matches, fail */
matchpos = pg_mbstrlen_with_len(queryText, curpos + 1)
+ cursorpos;
}
else if (queryText[curpos] == '\'' &&
match_prosrc_to_literal(prosrc, &queryText[curpos + 1],
cursorpos, &newcursorpos))
{
/*
* Found a 'foo' match. match_prosrc_to_literal() has adjusted
* for any quotes or backslashes embedded in the literal.
*/
if (matchpos)
return 0; /* multiple matches, fail */
matchpos = pg_mbstrlen_with_len(queryText, curpos + 1)
+ newcursorpos;
}
}
return matchpos;
}
| Oid ProcedureCreate | ( | const char * | procedureName, | |
| Oid | procNamespace, | |||
| bool | replace, | |||
| bool | returnsSet, | |||
| Oid | returnType, | |||
| Oid | proowner, | |||
| Oid | languageObjectId, | |||
| Oid | languageValidator, | |||
| const char * | prosrc, | |||
| const char * | probin, | |||
| bool | isAgg, | |||
| bool | isWindowFunc, | |||
| bool | security_definer, | |||
| bool | isLeakProof, | |||
| bool | isStrict, | |||
| char | volatility, | |||
| oidvector * | parameterTypes, | |||
| Datum | allParameterTypes, | |||
| Datum | parameterModes, | |||
| Datum | parameterNames, | |||
| List * | parameterDefaults, | |||
| Datum | proconfig, | |||
| float4 | procost, | |||
| float4 | prorows | |||
| ) |
Definition at line 68 of file pg_proc.c.
References ACL_KIND_PROC, ACL_OBJECT_FUNCTION, aclcheck_error(), ACLCHECK_NOT_OWNER, aclmembers(), Anum_pg_proc_proacl, Anum_pg_proc_proallargtypes, Anum_pg_proc_proargdefaults, Anum_pg_proc_proargmodes, Anum_pg_proc_proargnames, Anum_pg_proc_proargtypes, Anum_pg_proc_probin, Anum_pg_proc_proconfig, Anum_pg_proc_procost, Anum_pg_proc_proisagg, Anum_pg_proc_proisstrict, Anum_pg_proc_proiswindow, Anum_pg_proc_prolang, Anum_pg_proc_proleakproof, Anum_pg_proc_proname, Anum_pg_proc_pronamespace, Anum_pg_proc_pronargdefaults, Anum_pg_proc_pronargs, Anum_pg_proc_proowner, Anum_pg_proc_proretset, Anum_pg_proc_prorettype, Anum_pg_proc_prorows, Anum_pg_proc_prosecdef, Anum_pg_proc_prosrc, Anum_pg_proc_protransform, Anum_pg_proc_provariadic, Anum_pg_proc_provolatile, ANYARRAYOID, ANYELEMENTOID, ANYENUMOID, ANYNONARRAYOID, ANYOID, ANYRANGEOID, ARR_DATA_PTR, ARR_DIMS, ARR_ELEMTYPE, ARR_HASNULL, ARR_NDIM, Assert, AtEOXact_GUC(), BoolGetDatum, build_function_result_tupdesc_d(), build_function_result_tupdesc_t(), CatalogUpdateIndexes(), CharGetDatum, ObjectAddress::classId, CommandCounterIncrement(), CStringGetTextDatum, DatumGetPointer, deleteDependencyRecordsFor(), DEPENDENCY_NORMAL, oidvector::dim1, elog, equalTupleDescs(), ereport, errcode(), errdetail(), errhint(), errmsg(), errmsg_plural(), ERROR, exprType(), Float4GetDatum(), format_procedure(), format_type_be(), FUNC_MAX_ARGS, get_attnum(), get_element_type(), get_func_input_arg_names(), get_user_default_acl(), GETSTRUCT, GUC_ACTION_SAVE, heap_close, heap_form_tuple(), heap_freetuple(), heap_modify_tuple(), heap_open(), HeapTupleGetOid, HeapTupleIsValid, i, INTERNALOID, InvalidAttrNumber, InvalidOid, InvokeObjectPostCreateHook, IsA, IsPolymorphicType, lfirst, list_head(), list_length(), lnext, NameGetDatum, namestrcpy(), NewGUCNestLevel(), NIL, nodeToString(), NULL, ObjectAddress::objectId, ObjectIdGetDatum, ObjectAddress::objectSubId, OidFunctionCall1, OidIsValid, OIDOID, pg_proc_ownercheck(), PGC_S_SESSION, PGC_SUSET, PGC_USERSET, PointerGetDatum, PointerIsValid, PROARGMODE_IN, PROARGMODE_INOUT, PROARGMODE_OUT, PROARGMODE_TABLE, PROARGMODE_VARIADIC, ProcedureRelationId, ProcessGUCArray(), PROCNAMEARGSNSP, recordDependencyOn(), recordDependencyOnCurrentExtension(), recordDependencyOnExpr(), recordDependencyOnOwner(), RECORDOID, RelationGetDescr, ReleaseSysCache(), RowExclusiveLock, SearchSysCache3, simple_heap_insert(), simple_heap_update(), stringToNode(), superuser(), SysCacheGetAttr(), HeapTupleData::t_self, TextDatumGetCString, typeidTypeRelid(), UInt16GetDatum, updateAclDependencies(), oidvector::values, and values.
Referenced by AggregateCreate(), CreateFunction(), CreateProceduralLanguage(), and makeRangeConstructors().
{
Oid retval;
int parameterCount;
int allParamCount;
Oid *allParams;
char *paramModes = NULL;
bool genericInParam = false;
bool genericOutParam = false;
bool anyrangeInParam = false;
bool anyrangeOutParam = false;
bool internalInParam = false;
bool internalOutParam = false;
Oid variadicType = InvalidOid;
Acl *proacl = NULL;
Relation rel;
HeapTuple tup;
HeapTuple oldtup;
bool nulls[Natts_pg_proc];
Datum values[Natts_pg_proc];
bool replaces[Natts_pg_proc];
Oid relid;
NameData procname;
TupleDesc tupDesc;
bool is_update;
ObjectAddress myself,
referenced;
int i;
/*
* sanity checks
*/
Assert(PointerIsValid(prosrc));
parameterCount = parameterTypes->dim1;
if (parameterCount < 0 || parameterCount > FUNC_MAX_ARGS)
ereport(ERROR,
(errcode(ERRCODE_TOO_MANY_ARGUMENTS),
errmsg_plural("functions cannot have more than %d argument",
"functions cannot have more than %d arguments",
FUNC_MAX_ARGS,
FUNC_MAX_ARGS)));
/* note: the above is correct, we do NOT count output arguments */
/* Deconstruct array inputs */
if (allParameterTypes != PointerGetDatum(NULL))
{
/*
* We expect the array to be a 1-D OID array; verify that. We don't
* need to use deconstruct_array() since the array data is just going
* to look like a C array of OID values.
*/
ArrayType *allParamArray = (ArrayType *) DatumGetPointer(allParameterTypes);
allParamCount = ARR_DIMS(allParamArray)[0];
if (ARR_NDIM(allParamArray) != 1 ||
allParamCount <= 0 ||
ARR_HASNULL(allParamArray) ||
ARR_ELEMTYPE(allParamArray) != OIDOID)
elog(ERROR, "allParameterTypes is not a 1-D Oid array");
allParams = (Oid *) ARR_DATA_PTR(allParamArray);
Assert(allParamCount >= parameterCount);
/* we assume caller got the contents right */
}
else
{
allParamCount = parameterCount;
allParams = parameterTypes->values;
}
if (parameterModes != PointerGetDatum(NULL))
{
/*
* We expect the array to be a 1-D CHAR array; verify that. We don't
* need to use deconstruct_array() since the array data is just going
* to look like a C array of char values.
*/
ArrayType *modesArray = (ArrayType *) DatumGetPointer(parameterModes);
if (ARR_NDIM(modesArray) != 1 ||
ARR_DIMS(modesArray)[0] != allParamCount ||
ARR_HASNULL(modesArray) ||
ARR_ELEMTYPE(modesArray) != CHAROID)
elog(ERROR, "parameterModes is not a 1-D char array");
paramModes = (char *) ARR_DATA_PTR(modesArray);
}
/*
* Detect whether we have polymorphic or INTERNAL arguments. The first
* loop checks input arguments, the second output arguments.
*/
for (i = 0; i < parameterCount; i++)
{
switch (parameterTypes->values[i])
{
case ANYARRAYOID:
case ANYELEMENTOID:
case ANYNONARRAYOID:
case ANYENUMOID:
genericInParam = true;
break;
case ANYRANGEOID:
genericInParam = true;
anyrangeInParam = true;
break;
case INTERNALOID:
internalInParam = true;
break;
}
}
if (allParameterTypes != PointerGetDatum(NULL))
{
for (i = 0; i < allParamCount; i++)
{
if (paramModes == NULL ||
paramModes[i] == PROARGMODE_IN ||
paramModes[i] == PROARGMODE_VARIADIC)
continue; /* ignore input-only params */
switch (allParams[i])
{
case ANYARRAYOID:
case ANYELEMENTOID:
case ANYNONARRAYOID:
case ANYENUMOID:
genericOutParam = true;
break;
case ANYRANGEOID:
genericOutParam = true;
anyrangeOutParam = true;
break;
case INTERNALOID:
internalOutParam = true;
break;
}
}
}
/*
* Do not allow polymorphic return type unless at least one input argument
* is polymorphic. ANYRANGE return type is even stricter: must have an
* ANYRANGE input (since we can't deduce the specific range type from
* ANYELEMENT). Also, do not allow return type INTERNAL unless at least
* one input argument is INTERNAL.
*/
if ((IsPolymorphicType(returnType) || genericOutParam)
&& !genericInParam)
ereport(ERROR,
(errcode(ERRCODE_INVALID_FUNCTION_DEFINITION),
errmsg("cannot determine result data type"),
errdetail("A function returning a polymorphic type must have at least one polymorphic argument.")));
if ((returnType == ANYRANGEOID || anyrangeOutParam) &&
!anyrangeInParam)
ereport(ERROR,
(errcode(ERRCODE_INVALID_FUNCTION_DEFINITION),
errmsg("cannot determine result data type"),
errdetail("A function returning \"anyrange\" must have at least one \"anyrange\" argument.")));
if ((returnType == INTERNALOID || internalOutParam) && !internalInParam)
ereport(ERROR,
(errcode(ERRCODE_INVALID_FUNCTION_DEFINITION),
errmsg("unsafe use of pseudo-type \"internal\""),
errdetail("A function returning \"internal\" must have at least one \"internal\" argument.")));
/*
* don't allow functions of complex types that have the same name as
* existing attributes of the type
*/
if (parameterCount == 1 &&
OidIsValid(parameterTypes->values[0]) &&
(relid = typeidTypeRelid(parameterTypes->values[0])) != InvalidOid &&
get_attnum(relid, procedureName) != InvalidAttrNumber)
ereport(ERROR,
(errcode(ERRCODE_DUPLICATE_COLUMN),
errmsg("\"%s\" is already an attribute of type %s",
procedureName,
format_type_be(parameterTypes->values[0]))));
if (paramModes != NULL)
{
/*
* Only the last input parameter can be variadic; if it is, save its
* element type. Errors here are just elog since caller should have
* checked this already.
*/
for (i = 0; i < allParamCount; i++)
{
switch (paramModes[i])
{
case PROARGMODE_IN:
case PROARGMODE_INOUT:
if (OidIsValid(variadicType))
elog(ERROR, "variadic parameter must be last");
break;
case PROARGMODE_OUT:
case PROARGMODE_TABLE:
/* okay */
break;
case PROARGMODE_VARIADIC:
if (OidIsValid(variadicType))
elog(ERROR, "variadic parameter must be last");
switch (allParams[i])
{
case ANYOID:
variadicType = ANYOID;
break;
case ANYARRAYOID:
variadicType = ANYELEMENTOID;
break;
default:
variadicType = get_element_type(allParams[i]);
if (!OidIsValid(variadicType))
elog(ERROR, "variadic parameter is not an array");
break;
}
break;
default:
elog(ERROR, "invalid parameter mode '%c'", paramModes[i]);
break;
}
}
}
/*
* All seems OK; prepare the data to be inserted into pg_proc.
*/
for (i = 0; i < Natts_pg_proc; ++i)
{
nulls[i] = false;
values[i] = (Datum) 0;
replaces[i] = true;
}
namestrcpy(&procname, procedureName);
values[Anum_pg_proc_proname - 1] = NameGetDatum(&procname);
values[Anum_pg_proc_pronamespace - 1] = ObjectIdGetDatum(procNamespace);
values[Anum_pg_proc_proowner - 1] = ObjectIdGetDatum(proowner);
values[Anum_pg_proc_prolang - 1] = ObjectIdGetDatum(languageObjectId);
values[Anum_pg_proc_procost - 1] = Float4GetDatum(procost);
values[Anum_pg_proc_prorows - 1] = Float4GetDatum(prorows);
values[Anum_pg_proc_provariadic - 1] = ObjectIdGetDatum(variadicType);
values[Anum_pg_proc_protransform - 1] = ObjectIdGetDatum(InvalidOid);
values[Anum_pg_proc_proisagg - 1] = BoolGetDatum(isAgg);
values[Anum_pg_proc_proiswindow - 1] = BoolGetDatum(isWindowFunc);
values[Anum_pg_proc_prosecdef - 1] = BoolGetDatum(security_definer);
values[Anum_pg_proc_proleakproof - 1] = BoolGetDatum(isLeakProof);
values[Anum_pg_proc_proisstrict - 1] = BoolGetDatum(isStrict);
values[Anum_pg_proc_proretset - 1] = BoolGetDatum(returnsSet);
values[Anum_pg_proc_provolatile - 1] = CharGetDatum(volatility);
values[Anum_pg_proc_pronargs - 1] = UInt16GetDatum(parameterCount);
values[Anum_pg_proc_pronargdefaults - 1] = UInt16GetDatum(list_length(parameterDefaults));
values[Anum_pg_proc_prorettype - 1] = ObjectIdGetDatum(returnType);
values[Anum_pg_proc_proargtypes - 1] = PointerGetDatum(parameterTypes);
if (allParameterTypes != PointerGetDatum(NULL))
values[Anum_pg_proc_proallargtypes - 1] = allParameterTypes;
else
nulls[Anum_pg_proc_proallargtypes - 1] = true;
if (parameterModes != PointerGetDatum(NULL))
values[Anum_pg_proc_proargmodes - 1] = parameterModes;
else
nulls[Anum_pg_proc_proargmodes - 1] = true;
if (parameterNames != PointerGetDatum(NULL))
values[Anum_pg_proc_proargnames - 1] = parameterNames;
else
nulls[Anum_pg_proc_proargnames - 1] = true;
if (parameterDefaults != NIL)
values[Anum_pg_proc_proargdefaults - 1] = CStringGetTextDatum(nodeToString(parameterDefaults));
else
nulls[Anum_pg_proc_proargdefaults - 1] = true;
values[Anum_pg_proc_prosrc - 1] = CStringGetTextDatum(prosrc);
if (probin)
values[Anum_pg_proc_probin - 1] = CStringGetTextDatum(probin);
else
nulls[Anum_pg_proc_probin - 1] = true;
if (proconfig != PointerGetDatum(NULL))
values[Anum_pg_proc_proconfig - 1] = proconfig;
else
nulls[Anum_pg_proc_proconfig - 1] = true;
/* proacl will be determined later */
rel = heap_open(ProcedureRelationId, RowExclusiveLock);
tupDesc = RelationGetDescr(rel);
/* Check for pre-existing definition */
oldtup = SearchSysCache3(PROCNAMEARGSNSP,
PointerGetDatum(procedureName),
PointerGetDatum(parameterTypes),
ObjectIdGetDatum(procNamespace));
if (HeapTupleIsValid(oldtup))
{
/* There is one; okay to replace it? */
Form_pg_proc oldproc = (Form_pg_proc) GETSTRUCT(oldtup);
Datum proargnames;
bool isnull;
if (!replace)
ereport(ERROR,
(errcode(ERRCODE_DUPLICATE_FUNCTION),
errmsg("function \"%s\" already exists with same argument types",
procedureName)));
if (!pg_proc_ownercheck(HeapTupleGetOid(oldtup), proowner))
aclcheck_error(ACLCHECK_NOT_OWNER, ACL_KIND_PROC,
procedureName);
/*
* Not okay to change the return type of the existing proc, since
* existing rules, views, etc may depend on the return type.
*/
if (returnType != oldproc->prorettype ||
returnsSet != oldproc->proretset)
ereport(ERROR,
(errcode(ERRCODE_INVALID_FUNCTION_DEFINITION),
errmsg("cannot change return type of existing function"),
errhint("Use DROP FUNCTION %s first.",
format_procedure(HeapTupleGetOid(oldtup)))));
/*
* If it returns RECORD, check for possible change of record type
* implied by OUT parameters
*/
if (returnType == RECORDOID)
{
TupleDesc olddesc;
TupleDesc newdesc;
olddesc = build_function_result_tupdesc_t(oldtup);
newdesc = build_function_result_tupdesc_d(allParameterTypes,
parameterModes,
parameterNames);
if (olddesc == NULL && newdesc == NULL)
/* ok, both are runtime-defined RECORDs */ ;
else if (olddesc == NULL || newdesc == NULL ||
!equalTupleDescs(olddesc, newdesc))
ereport(ERROR,
(errcode(ERRCODE_INVALID_FUNCTION_DEFINITION),
errmsg("cannot change return type of existing function"),
errdetail("Row type defined by OUT parameters is different."),
errhint("Use DROP FUNCTION %s first.",
format_procedure(HeapTupleGetOid(oldtup)))));
}
/*
* If there were any named input parameters, check to make sure the
* names have not been changed, as this could break existing calls. We
* allow adding names to formerly unnamed parameters, though.
*/
proargnames = SysCacheGetAttr(PROCNAMEARGSNSP, oldtup,
Anum_pg_proc_proargnames,
&isnull);
if (!isnull)
{
Datum proargmodes;
char **old_arg_names;
char **new_arg_names;
int n_old_arg_names;
int n_new_arg_names;
int j;
proargmodes = SysCacheGetAttr(PROCNAMEARGSNSP, oldtup,
Anum_pg_proc_proargmodes,
&isnull);
if (isnull)
proargmodes = PointerGetDatum(NULL); /* just to be sure */
n_old_arg_names = get_func_input_arg_names(proargnames,
proargmodes,
&old_arg_names);
n_new_arg_names = get_func_input_arg_names(parameterNames,
parameterModes,
&new_arg_names);
for (j = 0; j < n_old_arg_names; j++)
{
if (old_arg_names[j] == NULL)
continue;
if (j >= n_new_arg_names || new_arg_names[j] == NULL ||
strcmp(old_arg_names[j], new_arg_names[j]) != 0)
ereport(ERROR,
(errcode(ERRCODE_INVALID_FUNCTION_DEFINITION),
errmsg("cannot change name of input parameter \"%s\"",
old_arg_names[j]),
errhint("Use DROP FUNCTION %s first.",
format_procedure(HeapTupleGetOid(oldtup)))));
}
}
/*
* If there are existing defaults, check compatibility: redefinition
* must not remove any defaults nor change their types. (Removing a
* default might cause a function to fail to satisfy an existing call.
* Changing type would only be possible if the associated parameter is
* polymorphic, and in such cases a change of default type might alter
* the resolved output type of existing calls.)
*/
if (oldproc->pronargdefaults != 0)
{
Datum proargdefaults;
List *oldDefaults;
ListCell *oldlc;
ListCell *newlc;
if (list_length(parameterDefaults) < oldproc->pronargdefaults)
ereport(ERROR,
(errcode(ERRCODE_INVALID_FUNCTION_DEFINITION),
errmsg("cannot remove parameter defaults from existing function"),
errhint("Use DROP FUNCTION %s first.",
format_procedure(HeapTupleGetOid(oldtup)))));
proargdefaults = SysCacheGetAttr(PROCNAMEARGSNSP, oldtup,
Anum_pg_proc_proargdefaults,
&isnull);
Assert(!isnull);
oldDefaults = (List *) stringToNode(TextDatumGetCString(proargdefaults));
Assert(IsA(oldDefaults, List));
Assert(list_length(oldDefaults) == oldproc->pronargdefaults);
/* new list can have more defaults than old, advance over 'em */
newlc = list_head(parameterDefaults);
for (i = list_length(parameterDefaults) - oldproc->pronargdefaults;
i > 0;
i--)
newlc = lnext(newlc);
foreach(oldlc, oldDefaults)
{
Node *oldDef = (Node *) lfirst(oldlc);
Node *newDef = (Node *) lfirst(newlc);
if (exprType(oldDef) != exprType(newDef))
ereport(ERROR,
(errcode(ERRCODE_INVALID_FUNCTION_DEFINITION),
errmsg("cannot change data type of existing parameter default value"),
errhint("Use DROP FUNCTION %s first.",
format_procedure(HeapTupleGetOid(oldtup)))));
newlc = lnext(newlc);
}
}
/* Can't change aggregate or window-function status, either */
if (oldproc->proisagg != isAgg)
{
if (oldproc->proisagg)
ereport(ERROR,
(errcode(ERRCODE_WRONG_OBJECT_TYPE),
errmsg("function \"%s\" is an aggregate function",
procedureName)));
else
ereport(ERROR,
(errcode(ERRCODE_WRONG_OBJECT_TYPE),
errmsg("function \"%s\" is not an aggregate function",
procedureName)));
}
if (oldproc->proiswindow != isWindowFunc)
{
if (oldproc->proiswindow)
ereport(ERROR,
(errcode(ERRCODE_WRONG_OBJECT_TYPE),
errmsg("function \"%s\" is a window function",
procedureName)));
else
ereport(ERROR,
(errcode(ERRCODE_WRONG_OBJECT_TYPE),
errmsg("function \"%s\" is not a window function",
procedureName)));
}
/*
* Do not change existing ownership or permissions, either. Note
* dependency-update code below has to agree with this decision.
*/
replaces[Anum_pg_proc_proowner - 1] = false;
replaces[Anum_pg_proc_proacl - 1] = false;
/* Okay, do it... */
tup = heap_modify_tuple(oldtup, tupDesc, values, nulls, replaces);
simple_heap_update(rel, &tup->t_self, tup);
ReleaseSysCache(oldtup);
is_update = true;
}
else
{
/* Creating a new procedure */
/* First, get default permissions and set up proacl */
proacl = get_user_default_acl(ACL_OBJECT_FUNCTION, proowner,
procNamespace);
if (proacl != NULL)
values[Anum_pg_proc_proacl - 1] = PointerGetDatum(proacl);
else
nulls[Anum_pg_proc_proacl - 1] = true;
tup = heap_form_tuple(tupDesc, values, nulls);
simple_heap_insert(rel, tup);
is_update = false;
}
/* Need to update indexes for either the insert or update case */
CatalogUpdateIndexes(rel, tup);
retval = HeapTupleGetOid(tup);
/*
* Create dependencies for the new function. If we are updating an
* existing function, first delete any existing pg_depend entries.
* (However, since we are not changing ownership or permissions, the
* shared dependencies do *not* need to change, and we leave them alone.)
*/
if (is_update)
deleteDependencyRecordsFor(ProcedureRelationId, retval, true);
myself.classId = ProcedureRelationId;
myself.objectId = retval;
myself.objectSubId = 0;
/* dependency on namespace */
referenced.classId = NamespaceRelationId;
referenced.objectId = procNamespace;
referenced.objectSubId = 0;
recordDependencyOn(&myself, &referenced, DEPENDENCY_NORMAL);
/* dependency on implementation language */
referenced.classId = LanguageRelationId;
referenced.objectId = languageObjectId;
referenced.objectSubId = 0;
recordDependencyOn(&myself, &referenced, DEPENDENCY_NORMAL);
/* dependency on return type */
referenced.classId = TypeRelationId;
referenced.objectId = returnType;
referenced.objectSubId = 0;
recordDependencyOn(&myself, &referenced, DEPENDENCY_NORMAL);
/* dependency on parameter types */
for (i = 0; i < allParamCount; i++)
{
referenced.classId = TypeRelationId;
referenced.objectId = allParams[i];
referenced.objectSubId = 0;
recordDependencyOn(&myself, &referenced, DEPENDENCY_NORMAL);
}
/* dependency on parameter default expressions */
if (parameterDefaults)
recordDependencyOnExpr(&myself, (Node *) parameterDefaults,
NIL, DEPENDENCY_NORMAL);
/* dependency on owner */
if (!is_update)
recordDependencyOnOwner(ProcedureRelationId, retval, proowner);
/* dependency on any roles mentioned in ACL */
if (!is_update && proacl != NULL)
{
int nnewmembers;
Oid *newmembers;
nnewmembers = aclmembers(proacl, &newmembers);
updateAclDependencies(ProcedureRelationId, retval, 0,
proowner,
0, NULL,
nnewmembers, newmembers);
}
/* dependency on extension */
recordDependencyOnCurrentExtension(&myself, is_update);
heap_freetuple(tup);
/* Post creation hook for new function */
InvokeObjectPostCreateHook(ProcedureRelationId, retval, 0);
heap_close(rel, RowExclusiveLock);
/* Verify function body */
if (OidIsValid(languageValidator))
{
ArrayType *set_items;
int save_nestlevel;
/* Advance command counter so new tuple can be seen by validator */
CommandCounterIncrement();
/* Set per-function configuration parameters */
set_items = (ArrayType *) DatumGetPointer(proconfig);
if (set_items) /* Need a new GUC nesting level */
{
save_nestlevel = NewGUCNestLevel();
ProcessGUCArray(set_items,
(superuser() ? PGC_SUSET : PGC_USERSET),
PGC_S_SESSION,
GUC_ACTION_SAVE);
}
else
save_nestlevel = 0; /* keep compiler quiet */
OidFunctionCall1(languageValidator, ObjectIdGetDatum(retval));
if (set_items)
AtEOXact_GUC(true, save_nestlevel);
}
return retval;
}
| static void sql_function_parse_error_callback | ( | void * | arg | ) | [static] |
Definition at line 918 of file pg_proc.c.
References errcontext, function_parse_error_transpose(), parse_error_callback_arg::proname, and parse_error_callback_arg::prosrc.
{
parse_error_callback_arg *callback_arg = (parse_error_callback_arg *) arg;
/* See if it's a syntax error; if so, transpose to CREATE FUNCTION */
if (!function_parse_error_transpose(callback_arg->prosrc))
{
/* If it's not a syntax error, push info onto context stack */
errcontext("SQL function \"%s\"", callback_arg->proname);
}
}
1.7.1