/*============================================
* string_to_record -- Read record from data block
* (modifies string -- inserts 0 between lines)
* This is the layout for traditional nodes:
* 0 INDI (or 0 FAM or 0 SOUR etc)
* returns addref'd record
*==========================================*/
RECORD
string_to_record (STRING str, CNSTRING key, INT len)
{
RECORD rec = 0;
NODE node = 0;
len=len; /* unused */
/* we must fill in the top field */
if (*str == '0') { /* traditional node, no metadata */
/* actually no metadata was ever used in any version */
node = string_to_node(str);
} else {
if (!strcmp(str, "DELE\n")) {
/* should have been filtered out in getrecord */
ASSERT(0); /* deleted record */
} else {
ASSERT(0); /* corrupt record */
}
}
if (node) {
rec = create_record_for_keyed_node(node, key);
}
return rec;
}
/*======================================
* llrpt_writeindi -- Write person to database
* usage: writeindi(INDI) -> BOOLEAN
*====================================*/
PVALUE
llrpt_writeindi (PNODE node, SYMTAB stab, BOOLEAN *eflg)
{
NODE indi1;
PNODE arg = iargs(node);
NODE indi2 = eval_indi(arg, stab, eflg, NULL);
STRING rawrec=0, msg;
INT len, cnt;
BOOLEAN rtn=FALSE;
if (*eflg || !indi2) {
prog_var_error(node, stab, arg, 0, nonind1, "writeindi");
return NULL;
}
/* make a copy, so we can delete it */
indi2 = copy_node_subtree(indi2);
/* get existing record */
rawrec = retrieve_raw_record(rmvat(nxref(indi2)), &len);
if (!rawrec) {
/*
TODO: What do we do here ? Are they adding a new indi ?
or did they get the xref wrong ?
*/
goto end_writeindi;
}
ASSERT(indi1 = string_to_node(rawrec));
cnt = resolve_refn_links(indi2);
/* validate for showstopper errors */
if (!valid_indi_tree(indi2, &msg, indi1)) {
/* TODO: What to do with msg ? */
goto end_writeindi;
}
if (cnt > 0) {
/* unresolvable refn links */
/* TODO: optional argument to make this fatal ? */
}
if (equal_tree(indi1, indi2)) {
/* optimization :) */
rtn = TRUE;
goto end_writeindi;
}
if (readonly) {
/* TODO: database is read only error message */
goto end_writeindi;
}
replace_indi(indi1, indi2);
strfree(&rawrec);
rtn = TRUE;
end_writeindi:
return create_pvalue_from_bool(rtn);
}
/*=====================================
* llrpt_writefam -- Write family to database
* usage: writefam(FAM) -> BOOLEAN
*===================================*/
PVALUE
llrpt_writefam (PNODE node, SYMTAB stab, BOOLEAN *eflg)
{
NODE fam1;
NODE fam2 = eval_fam(iargs(node), stab, eflg, NULL);
STRING rawrec=0, msg;
INT len, cnt;
BOOLEAN rtn=FALSE;
if (*eflg) return NULL;
/* make a copy, so we can delete it */
fam2 = copy_node_subtree(fam2);
/* get existing record */
rawrec = retrieve_raw_record(rmvat(nxref(fam2)), &len);
if (!rawrec) {
/*
TODO: What do we do here ? Are they adding a new fam ?
or did they get the xref wrong ?
*/
goto end_writefam;
}
ASSERT(fam1 = string_to_node(rawrec));
cnt = resolve_refn_links(fam2);
/* validate for showstopper errors */
if (!valid_fam_tree(fam2, &msg, fam1)) {
/* TODO: What to do with msg ? */
goto end_writefam;
}
if (cnt > 0) {
/* unresolvable refn links */
/* TODO: optional argument to make this fatal ? */
}
if (equal_tree(fam1, fam2)) {
/* optimization :) */
rtn = TRUE;
goto end_writefam;
}
if (readonly) {
/* TODO: database is read only error message */
goto end_writefam;
}
replace_fam(fam1, fam2);
strfree(&rawrec);
rtn = TRUE;
end_writefam:
return create_pvalue_from_bool(rtn);
}
/*===================================================
* who_is_he_she -- Find who person is from key value
*=================================================*/
void
who_is_he_she (void)
{
STRING str, rawrec;
NODE indi;
INT len;
char nkey[100];
char key[20];
if (!ask_for_string(_("Please enter person's internal key value."),
_("enter key:"), key, sizeof(key))
|| !key[0])
return;
nkey[0] = 'I';
if (*key == 'I')
strcpy(nkey, key);
else
strcpy(&nkey[1], key);
if (!(rawrec = retrieve_raw_record(nkey, &len))) {
msg_error(_("No one in database has key value %s."), key);
return;
}
if (!(indi = string_to_node(rawrec))) {
msg_error(_("No one in database has key value %s."), key);
stdfree(rawrec);
return;
}
if (!(str = indi_to_name(indi, 60)) || *str == 0) {
msg_error(_("No one in database has key value %s."), key);
stdfree(rawrec);
return;
}
msg_info("%s - %s", key, str);
/* LEAK -- where is stdfree(rawrec) -- Perry 2001/11/18 */
}
/* ----------------------------------------------------------------
* procedure_create
*
* Note: allParameterTypes, parameterModes, parameterNames, and proconfig
* are either arrays of the proper types or NULL. We declare them Datum,
* not "ArrayType *", to avoid importing array.h into pg_proc_fn.h.
* ----------------------------------------------------------------
*/
oid_t
procedure_create(
const char *procedureName,
oid_t procNamespace,
bool replace,
bool returnsSet,
oid_t returnType,
oid_t languageObjectId,
oid_t languageValidator,
const char *prosrc,
const char *probin,
bool isAgg,
bool isWindowFunc,
bool security_definer,
bool isStrict,
char volatility,
oid_vector_s *parameterTypes,
datum_t allParameterTypes,
datum_t parameterModes,
datum_t parameterNames,
struct list *parameterDefaults,
datum_t proconfig,
float4 procost,
float4 prorows)
{
oid_t retval;
int parameterCount;
int allParamCount;
oid_t* allParams;
bool genericInParam = false;
bool genericOutParam = false;
bool internalInParam = false;
bool internalOutParam = false;
oid_t variadicType = INVALID_OID;
oid_t proowner = get_uid();
acl_s* proacl = NULL;
struct relation* rel;
struct heap_tuple* tup;
struct heap_tuple* oldtup;
bool nulls[Natts_pg_proc];
datum_t values[Natts_pg_proc];
bool replaces[Natts_pg_proc];
oid_t relid;
struct name procname;
struct tuple* tupDesc;
bool is_update;
struct objaddr myself;
struct objaddr referenced;
int i;
/*
* sanity checks
*/
ASSERT(PTR_VALID(prosrc));
parameterCount = parameterTypes->dim1;
if (parameterCount < 0 || parameterCount > FUNC_MAX_ARGS) {
ereport(ERROR, (
errcode(E_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 */
if (allParameterTypes != PTR_TO_D(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.
*/
array_s *allParamArray;
allParamArray = (array_s*) D_TO_PTR(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_t array");
allParams = (oid_t*) ARR_DATA_PTR(allParamArray);
ASSERT(allParamCount >= parameterCount);
/* we assume caller got the contents right */
} else {
allParamCount = parameterCount;
allParams = parameterTypes->values;
}
/*
* Do not allow polymorphic return type unless at least one input argument
* is polymorphic. Also, do not allow return type INTERNAL unless at
* least one input argument is INTERNAL.
*/
for (i = 0; i < parameterCount; i++) {
switch (parameterTypes->values[i]) {
case ANYARRAYOID:
case ANYELEMENTOID:
case ANYNONARRAYOID:
case ANYENUMOID:
genericInParam = true;
break;
case INTERNALOID:
internalInParam = true;
break;
}
}
if (allParameterTypes != PTR_TO_D(NULL)) {
for (i = 0; i < allParamCount; i++) {
/*
* We don't bother to distinguish input and output params here, so
* if there is, say, just an input INTERNAL param then we will
* still set internalOutParam. This is OK since we don't really
* care.
*/
switch (allParams[i]) {
case ANYARRAYOID:
case ANYELEMENTOID:
case ANYNONARRAYOID:
case ANYENUMOID:
genericOutParam = true;
break;
case INTERNALOID:
internalOutParam = true;
break;
}
}
}
if ((is_polymorphic_type(returnType) || genericOutParam)
&& !genericInParam) {
ereport(ERROR, (
errcode(E_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 == INTERNALOID || internalOutParam)
&& !internalInParam) {
ereport(ERROR, (
errcode(E_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
&& OID_VALID(parameterTypes->values[0])
&& (relid = typeid_to_relid(parameterTypes->values[0])) != INVALID_OID
&& get_attnum(relid, procedureName) != INVALID_ATTR_NR) {
ereport(ERROR, (
errcode(E_DUPLICATE_COLUMN),
errmsg("\"%s\" is already an attribute of type %s",
procedureName,
format_type_be(parameterTypes->values[0]))));
}
if (parameterModes != PTR_TO_D(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.
*/
array_s* modesArray;
char* modes;
modesArray = (array_s *) D_TO_PTR(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");
modes = (char*) ARR_DATA_PTR(modesArray);
/*
* 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 (modes[i]) {
case PROARGMODE_IN:
case PROARGMODE_INOUT:
if (OID_VALID(variadicType))
elog(ERROR, "variadic parameter must be last");
break;
case PROARGMODE_OUT:
case PROARGMODE_TABLE:
/* okay */
break;
case PROARGMODE_VARIADIC:
if (OID_VALID(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 (!OID_VALID(variadicType))
elog(ERROR, "variadic parameter is not an array");
break;
}
break;
default:
elog(ERROR, "invalid parameter mode '%c'", modes[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_t) 0;
replaces[i] = true;
}
namestrcpy(&procname, procedureName);
values[Anum_pg_proc_proname - 1] = NAME_TO_D(&procname);
values[Anum_pg_proc_pronamespace - 1] = OID_TO_D(procNamespace);
values[Anum_pg_proc_proowner - 1] = OID_TO_D(proowner);
values[Anum_pg_proc_prolang - 1] = OID_TO_D(languageObjectId);
values[Anum_pg_proc_procost - 1] = FLOAT4_TO_D(procost);
values[Anum_pg_proc_prorows - 1] = FLOAT4_TO_D(prorows);
values[Anum_pg_proc_provariadic - 1] = OID_TO_D(variadicType);
values[Anum_pg_proc_proisagg - 1] = BOOL_TO_D(isAgg);
values[Anum_pg_proc_proiswindow - 1] = BOOL_TO_D(isWindowFunc);
values[Anum_pg_proc_prosecdef - 1] = BOOL_TO_D(security_definer);
values[Anum_pg_proc_proisstrict - 1] = BOOL_TO_D(isStrict);
values[Anum_pg_proc_proretset - 1] = BOOL_TO_D(returnsSet);
values[Anum_pg_proc_provolatile - 1] = CHAR_TO_D(volatility);
values[Anum_pg_proc_pronargs - 1] = UINT16_TO_D(parameterCount);
values[Anum_pg_proc_pronargdefaults - 1] = UINT16_TO_D(list_length(parameterDefaults));
values[Anum_pg_proc_prorettype - 1] = OID_TO_D(returnType);
values[Anum_pg_proc_proargtypes - 1] = PTR_TO_D(parameterTypes);
if (allParameterTypes != PTR_TO_D(NULL))
values[Anum_pg_proc_proallargtypes - 1] = allParameterTypes;
else
nulls[Anum_pg_proc_proallargtypes - 1] = true;
if (parameterModes != PTR_TO_D(NULL))
values[Anum_pg_proc_proargmodes - 1] = parameterModes;
else
nulls[Anum_pg_proc_proargmodes - 1] = true;
if (parameterNames != PTR_TO_D(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(
node_to_string(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 != PTR_TO_D(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, ROW_EXCL_LOCK);
tupDesc = REL_DESC(rel);
/* Check for pre-existing definition */
oldtup = search_syscache3(
PROCNAMEARGSNSP,
PTR_TO_D(procedureName),
PTR_TO_D(parameterTypes),
OID_TO_D(procNamespace));
if (HT_VALID(oldtup)) {
/* There is one; okay to replace it? */
Form_pg_proc oldproc;
datum_t proargnames;
bool isnull;
oldproc = (Form_pg_proc) GET_STRUCT(oldtup);
if (!replace) {
ereport(ERROR, (
errcode(E_DUPLICATE_FUNCTION),
errmsg("function \"%s\" already exists with same argument types",
procedureName)));
}
if (!pg_proc_ownercheck(HEAPTUP_OID(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(E_INVALID_FUNCTION_DEFINITION),
errmsg("cannot change return type of existing function"),
errhint("Use DROP FUNCTION first.")));
}
/*
* If it returns RECORD, check for possible change of record type
* implied by OUT parameters
*/
if (returnType == RECORDOID) {
struct tuple* olddesc;
struct tuple* 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
|| !tupdesc_equal(olddesc, newdesc)) {
ereport(ERROR, (
errcode(E_INVALID_FUNCTION_DEFINITION),
errmsg("cannot change return type of existing function"),
errdetail("Row type defined by OUT parameters is different."),
errhint("Use DROP FUNCTION first.")));
}
}
/*
* 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 = syscache_attr(
PROCNAMEARGSNSP,
oldtup,
Anum_pg_proc_proargnames,
&isnull);
if (!isnull) {
datum_t proargmodes;
char** old_arg_names;
char** new_arg_names;
int n_old_arg_names;
int n_new_arg_names;
int j;
proargmodes = syscache_attr(
PROCNAMEARGSNSP,
oldtup,
Anum_pg_proc_proargmodes,
&isnull);
if (isnull)
proargmodes = PTR_TO_D(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(E_INVALID_FUNCTION_DEFINITION),
errmsg("cannot change name of input parameter \"%s\"",
old_arg_names[j]),
errhint("Use DROP FUNCTION first.")));
}
}
}
/*
* 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_t proargdefaults;
struct list* oldDefaults;
struct list_cell* oldlc;
struct list_cell* newlc;
if (list_length(parameterDefaults) < oldproc->pronargdefaults) {
ereport(ERROR, (
errcode(E_INVALID_FUNCTION_DEFINITION),
errmsg("cannot remove parameter defaults from existing function"),
errhint("Use DROP FUNCTION first.")));
}
proargdefaults = syscache_attr(
PROCNAMEARGSNSP,
oldtup,
Anum_pg_proc_proargdefaults,
&isnull);
ASSERT(!isnull);
oldDefaults = (struct list*) string_to_node(
TextD_TO_CSTRING(proargdefaults));
ASSERT(IS_A(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_n* oldDef;
node_n* newDef;
oldDef = (node_n*) lfirst(oldlc);
newDef = (node_n*) lfirst(newlc);
if (expr_type(oldDef) != expr_type(newDef)) {
ereport(ERROR,(
errcode(E_INVALID_FUNCTION_DEFINITION),
errmsg("cannot change data type of existing"
" parameter default value"),
errhint("Use DROP FUNCTION first.")));
}
newlc = lnext(newlc);
}
}
