/*
* DefineAggregate
*
* "oldstyle" signals the old (pre-8.2) style where the aggregate input type
* is specified by a BASETYPE element in the parameters. Otherwise,
* "args" defines the input type(s).
*/
Oid
DefineAggregate(List *name, List *args, bool oldstyle, List *parameters)
{
char *aggName;
Oid aggNamespace;
AclResult aclresult;
List *transfuncName = NIL;
List *finalfuncName = NIL;
List *sortoperatorName = NIL;
TypeName *baseType = NULL;
TypeName *transType = NULL;
char *initval = NULL;
Oid *aggArgTypes;
int numArgs;
Oid transTypeId;
char transTypeType;
ListCell *pl;
/* Convert list of names to a name and namespace */
aggNamespace = QualifiedNameGetCreationNamespace(name, &aggName);
/* Check we have creation rights in target namespace */
aclresult = pg_namespace_aclcheck(aggNamespace, GetUserId(), ACL_CREATE);
if (aclresult != ACLCHECK_OK)
aclcheck_error(aclresult, ACL_KIND_NAMESPACE,
get_namespace_name(aggNamespace));
foreach(pl, parameters)
{
DefElem *defel = (DefElem *) lfirst(pl);
/*
* sfunc1, stype1, and initcond1 are accepted as obsolete spellings
* for sfunc, stype, initcond.
*/
if (pg_strcasecmp(defel->defname, "sfunc") == 0)
transfuncName = defGetQualifiedName(defel);
else if (pg_strcasecmp(defel->defname, "sfunc1") == 0)
transfuncName = defGetQualifiedName(defel);
else if (pg_strcasecmp(defel->defname, "finalfunc") == 0)
finalfuncName = defGetQualifiedName(defel);
else if (pg_strcasecmp(defel->defname, "sortop") == 0)
sortoperatorName = defGetQualifiedName(defel);
else if (pg_strcasecmp(defel->defname, "basetype") == 0)
baseType = defGetTypeName(defel);
else if (pg_strcasecmp(defel->defname, "stype") == 0)
transType = defGetTypeName(defel);
else if (pg_strcasecmp(defel->defname, "stype1") == 0)
transType = defGetTypeName(defel);
else if (pg_strcasecmp(defel->defname, "initcond") == 0)
initval = defGetString(defel);
else if (pg_strcasecmp(defel->defname, "initcond1") == 0)
initval = defGetString(defel);
else
ereport(WARNING,
(errcode(ERRCODE_SYNTAX_ERROR),
errmsg("aggregate attribute \"%s\" not recognized",
defel->defname)));
}
/*
* DefineAggregate
*
* "oldstyle" signals the old (pre-8.2) style where the aggregate input type
* is specified by a BASETYPE element in the parameters. Otherwise,
* "args" is a pair, whose first element is a list of FunctionParameter structs
* defining the agg's arguments (both direct and aggregated), and whose second
* element is an Integer node with the number of direct args, or -1 if this
* isn't an ordered-set aggregate.
* "parameters" is a list of DefElem representing the agg's definition clauses.
*/
ObjectAddress
DefineAggregate(List *name, List *args, bool oldstyle, List *parameters,
const char *queryString)
{
char *aggName;
Oid aggNamespace;
AclResult aclresult;
char aggKind = AGGKIND_NORMAL;
List *transfuncName = NIL;
List *finalfuncName = NIL;
List *combinefuncName = NIL;
List *serialfuncName = NIL;
List *deserialfuncName = NIL;
List *mtransfuncName = NIL;
List *minvtransfuncName = NIL;
List *mfinalfuncName = NIL;
bool finalfuncExtraArgs = false;
bool mfinalfuncExtraArgs = false;
List *sortoperatorName = NIL;
TypeName *baseType = NULL;
TypeName *transType = NULL;
TypeName *serialType = NULL;
TypeName *mtransType = NULL;
int32 transSpace = 0;
int32 mtransSpace = 0;
char *initval = NULL;
char *minitval = NULL;
char *parallel = NULL;
int numArgs;
int numDirectArgs = 0;
oidvector *parameterTypes;
ArrayType *allParameterTypes;
ArrayType *parameterModes;
ArrayType *parameterNames;
List *parameterDefaults;
Oid variadicArgType;
Oid transTypeId;
Oid serialTypeId = InvalidOid;
Oid mtransTypeId = InvalidOid;
char transTypeType;
char mtransTypeType = 0;
char proparallel = PROPARALLEL_UNSAFE;
ListCell *pl;
/* Convert list of names to a name and namespace */
aggNamespace = QualifiedNameGetCreationNamespace(name, &aggName);
/* Check we have creation rights in target namespace */
aclresult = pg_namespace_aclcheck(aggNamespace, GetUserId(), ACL_CREATE);
if (aclresult != ACLCHECK_OK)
aclcheck_error(aclresult, ACL_KIND_NAMESPACE,
get_namespace_name(aggNamespace));
/* Deconstruct the output of the aggr_args grammar production */
if (!oldstyle)
{
Assert(list_length(args) == 2);
numDirectArgs = intVal(lsecond(args));
if (numDirectArgs >= 0)
aggKind = AGGKIND_ORDERED_SET;
else
numDirectArgs = 0;
args = (List *) linitial(args);
}
/* Examine aggregate's definition clauses */
foreach(pl, parameters)
{
DefElem *defel = (DefElem *) lfirst(pl);
/*
* sfunc1, stype1, and initcond1 are accepted as obsolete spellings
* for sfunc, stype, initcond.
*/
if (pg_strcasecmp(defel->defname, "sfunc") == 0)
transfuncName = defGetQualifiedName(defel);
else if (pg_strcasecmp(defel->defname, "sfunc1") == 0)
transfuncName = defGetQualifiedName(defel);
else if (pg_strcasecmp(defel->defname, "finalfunc") == 0)
finalfuncName = defGetQualifiedName(defel);
else if (pg_strcasecmp(defel->defname, "combinefunc") == 0)
combinefuncName = defGetQualifiedName(defel);
else if (pg_strcasecmp(defel->defname, "serialfunc") == 0)
serialfuncName = defGetQualifiedName(defel);
else if (pg_strcasecmp(defel->defname, "deserialfunc") == 0)
deserialfuncName = defGetQualifiedName(defel);
else if (pg_strcasecmp(defel->defname, "msfunc") == 0)
mtransfuncName = defGetQualifiedName(defel);
else if (pg_strcasecmp(defel->defname, "minvfunc") == 0)
minvtransfuncName = defGetQualifiedName(defel);
else if (pg_strcasecmp(defel->defname, "mfinalfunc") == 0)
mfinalfuncName = defGetQualifiedName(defel);
else if (pg_strcasecmp(defel->defname, "finalfunc_extra") == 0)
finalfuncExtraArgs = defGetBoolean(defel);
else if (pg_strcasecmp(defel->defname, "mfinalfunc_extra") == 0)
mfinalfuncExtraArgs = defGetBoolean(defel);
else if (pg_strcasecmp(defel->defname, "sortop") == 0)
sortoperatorName = defGetQualifiedName(defel);
else if (pg_strcasecmp(defel->defname, "basetype") == 0)
baseType = defGetTypeName(defel);
else if (pg_strcasecmp(defel->defname, "hypothetical") == 0)
{
if (defGetBoolean(defel))
{
if (aggKind == AGGKIND_NORMAL)
ereport(ERROR,
(errcode(ERRCODE_INVALID_FUNCTION_DEFINITION),
errmsg("only ordered-set aggregates can be hypothetical")));
aggKind = AGGKIND_HYPOTHETICAL;
}
}
else if (pg_strcasecmp(defel->defname, "stype") == 0)
transType = defGetTypeName(defel);
else if (pg_strcasecmp(defel->defname, "serialtype") == 0)
serialType = defGetTypeName(defel);
else if (pg_strcasecmp(defel->defname, "stype1") == 0)
transType = defGetTypeName(defel);
else if (pg_strcasecmp(defel->defname, "sspace") == 0)
transSpace = defGetInt32(defel);
else if (pg_strcasecmp(defel->defname, "mstype") == 0)
mtransType = defGetTypeName(defel);
else if (pg_strcasecmp(defel->defname, "msspace") == 0)
mtransSpace = defGetInt32(defel);
else if (pg_strcasecmp(defel->defname, "initcond") == 0)
initval = defGetString(defel);
else if (pg_strcasecmp(defel->defname, "initcond1") == 0)
initval = defGetString(defel);
else if (pg_strcasecmp(defel->defname, "minitcond") == 0)
minitval = defGetString(defel);
else if (pg_strcasecmp(defel->defname, "parallel") == 0)
parallel = defGetString(defel);
else
ereport(WARNING,
(errcode(ERRCODE_SYNTAX_ERROR),
errmsg("aggregate attribute \"%s\" not recognized",
defel->defname)));
}
/*
* DefineOperator
* this function extracts all the information from the
* parameter list generated by the parser and then has
* OperatorCreate() do all the actual work.
*
* 'parameters' is a list of DefElem
*/
ObjectAddress
DefineOperator(List *names, List *parameters)
{
char *oprName;
Oid oprNamespace;
AclResult aclresult;
bool canMerge = false; /* operator merges */
bool canHash = false; /* operator hashes */
List *functionName = NIL; /* function for operator */
TypeName *typeName1 = NULL; /* first type name */
TypeName *typeName2 = NULL; /* second type name */
Oid typeId1 = InvalidOid; /* types converted to OID */
Oid typeId2 = InvalidOid;
Oid rettype;
List *commutatorName = NIL; /* optional commutator operator name */
List *negatorName = NIL; /* optional negator operator name */
List *restrictionName = NIL; /* optional restrict. sel. procedure */
List *joinName = NIL; /* optional join sel. procedure */
Oid functionOid; /* functions converted to OID */
Oid restrictionOid;
Oid joinOid;
Oid typeId[2]; /* to hold left and right arg */
int nargs;
ListCell *pl;
/* Convert list of names to a name and namespace */
oprNamespace = QualifiedNameGetCreationNamespace(names, &oprName);
/* Check we have creation rights in target namespace */
aclresult = pg_namespace_aclcheck(oprNamespace, GetUserId(), ACL_CREATE);
if (aclresult != ACLCHECK_OK)
aclcheck_error(aclresult, ACL_KIND_NAMESPACE,
get_namespace_name(oprNamespace));
/*
* loop over the definition list and extract the information we need.
*/
foreach(pl, parameters)
{
DefElem *defel = (DefElem *) lfirst(pl);
if (pg_strcasecmp(defel->defname, "leftarg") == 0)
{
typeName1 = defGetTypeName(defel);
if (typeName1->setof)
ereport(ERROR,
(errcode(ERRCODE_INVALID_FUNCTION_DEFINITION),
errmsg("SETOF type not allowed for operator argument")));
}
else if (pg_strcasecmp(defel->defname, "rightarg") == 0)
{
typeName2 = defGetTypeName(defel);
if (typeName2->setof)
ereport(ERROR,
(errcode(ERRCODE_INVALID_FUNCTION_DEFINITION),
errmsg("SETOF type not allowed for operator argument")));
}
else if (pg_strcasecmp(defel->defname, "procedure") == 0)
functionName = defGetQualifiedName(defel);
else if (pg_strcasecmp(defel->defname, "commutator") == 0)
commutatorName = defGetQualifiedName(defel);
else if (pg_strcasecmp(defel->defname, "negator") == 0)
negatorName = defGetQualifiedName(defel);
else if (pg_strcasecmp(defel->defname, "restrict") == 0)
restrictionName = defGetQualifiedName(defel);
else if (pg_strcasecmp(defel->defname, "join") == 0)
joinName = defGetQualifiedName(defel);
else if (pg_strcasecmp(defel->defname, "hashes") == 0)
canHash = defGetBoolean(defel);
else if (pg_strcasecmp(defel->defname, "merges") == 0)
canMerge = defGetBoolean(defel);
/* These obsolete options are taken as meaning canMerge */
else if (pg_strcasecmp(defel->defname, "sort1") == 0)
canMerge = true;
else if (pg_strcasecmp(defel->defname, "sort2") == 0)
canMerge = true;
else if (pg_strcasecmp(defel->defname, "ltcmp") == 0)
canMerge = true;
else if (pg_strcasecmp(defel->defname, "gtcmp") == 0)
canMerge = true;
else
{
/* WARNING, not ERROR, for historical backwards-compatibility */
ereport(WARNING,
(errcode(ERRCODE_SYNTAX_ERROR),
errmsg("operator attribute \"%s\" not recognized",
defel->defname)));
}
}
/*
* DefineOperator
* this function extracts all the information from the
* parameter list generated by the parser and then has
* OperatorCreate() do all the actual work.
*
* 'parameters' is a list of DefElem
*/
void
DefineOperator(List *names, List *parameters)
{
char *oprName;
Oid oprNamespace;
AclResult aclresult;
bool canMerge = false; /* operator merges */
bool canHash = false; /* operator hashes */
List *functionName = NIL; /* function for operator */
TypeName *typeName1 = NULL; /* first type name */
TypeName *typeName2 = NULL; /* second type name */
Oid typeId1 = InvalidOid; /* types converted to OID */
Oid typeId2 = InvalidOid;
Oid rettype;
List *commutatorName = NIL; /* optional commutator operator name */
List *negatorName = NIL; /* optional negator operator name */
List *restrictionName = NIL; /* optional restrict. sel. procedure */
List *joinName = NIL; /* optional join sel. procedure */
Oid functionOid; /* functions converted to OID */
Oid restrictionOid;
Oid joinOid;
Oid typeId[5]; /* only need up to 5 args here */
int nargs;
ListCell *pl;
/* Convert list of names to a name and namespace */
oprNamespace = QualifiedNameGetCreationNamespace(names, &oprName);
/*
* The SQL standard committee has decided that => should be used for named
* parameters; therefore, a future release of PostgreSQL may disallow it
* as the name of a user-defined operator.
*/
if (strcmp(oprName, "=>") == 0)
ereport(WARNING,
(errmsg("=> is deprecated as an operator name"),
errdetail("This name may be disallowed altogether in future versions of PostgreSQL.")));
/* Check we have creation rights in target namespace */
aclresult = pg_namespace_aclcheck(oprNamespace, GetUserId(), ACL_CREATE);
if (aclresult != ACLCHECK_OK)
aclcheck_error(aclresult, ACL_KIND_NAMESPACE,
get_namespace_name(oprNamespace));
/*
* loop over the definition list and extract the information we need.
*/
foreach(pl, parameters)
{
DefElem *defel = (DefElem *) lfirst(pl);
if (pg_strcasecmp(defel->defname, "leftarg") == 0)
{
typeName1 = defGetTypeName(defel);
if (typeName1->setof)
ereport(ERROR,
(errcode(ERRCODE_INVALID_FUNCTION_DEFINITION),
errmsg("SETOF type not allowed for operator argument")));
}
else if (pg_strcasecmp(defel->defname, "rightarg") == 0)
{
typeName2 = defGetTypeName(defel);
if (typeName2->setof)
ereport(ERROR,
(errcode(ERRCODE_INVALID_FUNCTION_DEFINITION),
errmsg("SETOF type not allowed for operator argument")));
}
else if (pg_strcasecmp(defel->defname, "procedure") == 0)
functionName = defGetQualifiedName(defel);
else if (pg_strcasecmp(defel->defname, "commutator") == 0)
commutatorName = defGetQualifiedName(defel);
else if (pg_strcasecmp(defel->defname, "negator") == 0)
negatorName = defGetQualifiedName(defel);
else if (pg_strcasecmp(defel->defname, "restrict") == 0)
restrictionName = defGetQualifiedName(defel);
else if (pg_strcasecmp(defel->defname, "join") == 0)
joinName = defGetQualifiedName(defel);
else if (pg_strcasecmp(defel->defname, "hashes") == 0)
canHash = defGetBoolean(defel);
else if (pg_strcasecmp(defel->defname, "merges") == 0)
canMerge = defGetBoolean(defel);
/* These obsolete options are taken as meaning canMerge */
else if (pg_strcasecmp(defel->defname, "sort1") == 0)
canMerge = true;
else if (pg_strcasecmp(defel->defname, "sort2") == 0)
canMerge = true;
else if (pg_strcasecmp(defel->defname, "ltcmp") == 0)
canMerge = true;
else if (pg_strcasecmp(defel->defname, "gtcmp") == 0)
canMerge = true;
else
ereport(WARNING,
(errcode(ERRCODE_SYNTAX_ERROR),
errmsg("operator attribute \"%s\" not recognized",
defel->defname)));
}
/*
* DefineOperator
* this function extracts all the information from the
* parameter list generated by the parser and then has
* OperatorCreate() do all the actual work.
*
* 'parameters' is a list of DefElem
*/
void
DefineOperator(List *names, List *parameters)
{
char *oprName;
Oid oprNamespace;
AclResult aclresult;
bool canHash = false; /* operator hashes */
bool canMerge = false; /* operator merges */
List *functionName = NIL; /* function for operator */
TypeName *typeName1 = NULL; /* first type name */
TypeName *typeName2 = NULL; /* second type name */
Oid typeId1 = InvalidOid; /* types converted to OID */
Oid typeId2 = InvalidOid;
List *commutatorName = NIL; /* optional commutator operator
* name */
List *negatorName = NIL; /* optional negator operator name */
List *restrictionName = NIL; /* optional restrict. sel.
* procedure */
List *joinName = NIL; /* optional join sel. procedure */
List *leftSortName = NIL; /* optional left sort operator */
List *rightSortName = NIL; /* optional right sort operator */
List *ltCompareName = NIL; /* optional < compare operator */
List *gtCompareName = NIL; /* optional > compare operator */
List *pl;
/* Convert list of names to a name and namespace */
oprNamespace = QualifiedNameGetCreationNamespace(names, &oprName);
/* Check we have creation rights in target namespace */
aclresult = pg_namespace_aclcheck(oprNamespace, GetUserId(), ACL_CREATE);
if (aclresult != ACLCHECK_OK)
aclcheck_error(aclresult, ACL_KIND_NAMESPACE,
get_namespace_name(oprNamespace));
/*
* loop over the definition list and extract the information we need.
*/
foreach(pl, parameters)
{
DefElem *defel = (DefElem *) lfirst(pl);
if (strcasecmp(defel->defname, "leftarg") == 0)
{
typeName1 = defGetTypeName(defel);
if (typeName1->setof)
ereport(ERROR,
(errcode(ERRCODE_INVALID_FUNCTION_DEFINITION),
errmsg("setof type not allowed for operator argument")));
}
else if (strcasecmp(defel->defname, "rightarg") == 0)
{
typeName2 = defGetTypeName(defel);
if (typeName2->setof)
ereport(ERROR,
(errcode(ERRCODE_INVALID_FUNCTION_DEFINITION),
errmsg("setof type not allowed for operator argument")));
}
else if (strcasecmp(defel->defname, "procedure") == 0)
functionName = defGetQualifiedName(defel);
else if (strcasecmp(defel->defname, "commutator") == 0)
commutatorName = defGetQualifiedName(defel);
else if (strcasecmp(defel->defname, "negator") == 0)
negatorName = defGetQualifiedName(defel);
else if (strcasecmp(defel->defname, "restrict") == 0)
restrictionName = defGetQualifiedName(defel);
else if (strcasecmp(defel->defname, "join") == 0)
joinName = defGetQualifiedName(defel);
else if (strcasecmp(defel->defname, "hashes") == 0)
canHash = TRUE;
else if (strcasecmp(defel->defname, "merges") == 0)
canMerge = TRUE;
else if (strcasecmp(defel->defname, "sort1") == 0)
leftSortName = defGetQualifiedName(defel);
else if (strcasecmp(defel->defname, "sort2") == 0)
rightSortName = defGetQualifiedName(defel);
else if (strcasecmp(defel->defname, "ltcmp") == 0)
ltCompareName = defGetQualifiedName(defel);
else if (strcasecmp(defel->defname, "gtcmp") == 0)
gtCompareName = defGetQualifiedName(defel);
else
ereport(WARNING,
(errcode(ERRCODE_SYNTAX_ERROR),
errmsg("operator attribute \"%s\" not recognized",
defel->defname)));
}