static sql_rel *
rel_create_func(mvc *sql, dlist *qname, dlist *params, symbol *res, dlist *ext_name, dlist *body, int type, int lang)
{
char *fname = qname_table(qname);
char *sname = qname_schema(qname);
sql_schema *s = NULL;
sql_func *f = NULL;
sql_subfunc *sf;
dnode *n;
list *type_list = NULL, *restype = NULL;
int instantiate = (sql->emode == m_instantiate);
int deps = (sql->emode == m_deps);
int create = (!instantiate && !deps);
bit vararg = FALSE;
char is_table = (res && res->token == SQL_TABLE);
char is_aggr = (type == F_AGGR);
char is_func = (type != F_PROC);
char *F = is_aggr?"AGGREGATE":(is_func?"FUNCTION":"PROCEDURE");
char *KF = type==F_FILT?"FILTER ": type==F_UNION?"UNION ": "";
assert(res || type == F_PROC || type == F_FILT);
if (is_table)
type = F_UNION;
if (STORE_READONLY && create)
return sql_error(sql, 06, "schema statements cannot be executed on a readonly database.");
if (sname && !(s = mvc_bind_schema(sql, sname)))
return sql_error(sql, 02, "3F000!CREATE %s%s: no such schema '%s'", KF, F, sname);
if (s == NULL)
s = cur_schema(sql);
type_list = create_type_list(sql, params, 1);
if ((sf = sql_bind_func_(sql->sa, s, fname, type_list, type)) != NULL && create) {
if (params) {
char *arg_list = NULL;
node *n;
for (n = type_list->h; n; n = n->next) {
char *tpe = subtype2string((sql_subtype *) n->data);
if (arg_list) {
arg_list = sql_message("%s, %s", arg_list, tpe);
_DELETE(tpe);
} else {
arg_list = tpe;
}
}
(void)sql_error(sql, 02, "CREATE %s%s: name '%s' (%s) already in use", KF, F, fname, arg_list);
_DELETE(arg_list);
list_destroy(type_list);
return NULL;
} else {
list_destroy(type_list);
return sql_error(sql, 02, "CREATE %s%s: name '%s' already in use", KF, F, fname);
}
} else {
list_destroy(type_list);
if (create && !schema_privs(sql->role_id, s)) {
return sql_error(sql, 02, "CREATE %s%s: insufficient privileges "
"for user '%s' in schema '%s'", KF, F,
stack_get_string(sql, "current_user"), s->base.name);
} else {
char *q = QUERY(sql->scanner);
list *l = NULL;
if (params) {
for (n = params->h; n; n = n->next) {
dnode *an = n->data.lval->h;
sql_add_param(sql, an->data.sval, &an->next->data.typeval);
}
l = sql->params;
if (l && list_length(l) == 1) {
sql_arg *a = l->h->data;
if (strcmp(a->name, "*") == 0) {
l = NULL;
vararg = TRUE;
}
}
}
if (!l)
l = sa_list(sql->sa);
if (res) {
restype = result_type(sql, res);
if (!restype)
return sql_error(sql, 01,
"CREATE %s%s: failed to get restype", KF, F);
}
if (body && lang > FUNC_LANG_SQL) {
char *lang_body = body->h->data.sval;
char *mod = (lang == FUNC_LANG_R)?"rapi":
(lang == FUNC_LANG_C)?"capi":
(lang == FUNC_LANG_J)?"japi":"unknown";
sql->params = NULL;
if (create) {
f = mvc_create_func(sql, sql->sa, s, fname, l, restype, type, lang, mod, fname, lang_body, FALSE, vararg);
} else if (!sf) {
return sql_error(sql, 01, "CREATE %s%s: R function %s.%s not bound", KF, F, s->base.name, fname );
} else {
sql_func *f = sf->func;
f->mod = _STRDUP("rapi");
f->imp = _STRDUP("eval");
if (res && restype)
f->res = restype;
f->sql = 0; /* native */
f->lang = FUNC_LANG_INT;
}
} else if (body) {
sql_arg *ra = (restype && !is_table)?restype->h->data:NULL;
list *b = NULL;
sql_schema *old_schema = cur_schema(sql);
sql->session->schema = s;
b = sequential_block(sql, (ra)?&ra->type:NULL, ra?NULL:restype, body, NULL, is_func);
sql->session->schema = old_schema;
sql->params = NULL;
if (!b)
return NULL;
/* check if we have a return statement */
if (is_func && restype && !has_return(b)) {
return sql_error(sql, 01,
"CREATE %s%s: missing return statement", KF, F);
}
if (!is_func && !restype && has_return(b)) {
return sql_error(sql, 01, "CREATE %s%s: procedures "
"cannot have return statements", KF, F);
}
/* in execute mode we instantiate the function */
if (instantiate || deps) {
return rel_psm_block(sql->sa, b);
} else if (create) {
f = mvc_create_func(sql, sql->sa, s, fname, l, restype, type, lang, "user", q, q, FALSE, vararg);
}
} else {
char *fmod = qname_module(ext_name);
char *fnme = qname_fname(ext_name);
if (!fmod || !fnme)
return NULL;
sql->params = NULL;
if (create) {
f = mvc_create_func(sql, sql->sa, s, fname, l, restype, type, lang, fmod, fnme, q, FALSE, vararg);
} else if (!sf) {
return sql_error(sql, 01, "CREATE %s%s: external name %s.%s not bound (%s,%s)", KF, F, fmod, fnme, s->base.name, fname );
} else {
sql_func *f = sf->func;
f->mod = _STRDUP(fmod);
f->imp = _STRDUP(fnme);
f->sql = 0; /* native */
f->lang = FUNC_LANG_INT;
}
}
}
}
return rel_create_function(sql->sa, s->base.name, f);
}
static sql_rel *
rel_create_func(mvc *sql, dlist *qname, dlist *params, symbol *res, dlist *ext_name, dlist *body, int type, int lang, int replace)
{
const char *fname = qname_table(qname);
const char *sname = qname_schema(qname);
sql_schema *s = NULL;
sql_func *f = NULL;
sql_subfunc *sf;
dnode *n;
list *type_list = NULL, *restype = NULL;
int instantiate = (sql->emode == m_instantiate);
int deps = (sql->emode == m_deps);
int create = (!instantiate && !deps);
bit vararg = FALSE;
char is_table = (res && res->token == SQL_TABLE);
char is_aggr = (type == F_AGGR);
char is_func = (type != F_PROC);
char is_loader = (type == F_LOADER);
char *F = is_loader?"LOADER":(is_aggr?"AGGREGATE":(is_func?"FUNCTION":"PROCEDURE"));
char *fn = is_loader?"loader":(is_aggr ? "aggregate" : (is_func ? "function" : "procedure"));
char *KF = type==F_FILT?"FILTER ": type==F_UNION?"UNION ": "";
char *kf = type == F_FILT ? "filter " : type == F_UNION ? "union " : "";
assert(res || type == F_PROC || type == F_FILT || type == F_LOADER);
if (is_table)
type = F_UNION;
if (STORE_READONLY && create)
return sql_error(sql, 06, SQLSTATE(42000) "Schema statements cannot be executed on a readonly database.");
if (sname && !(s = mvc_bind_schema(sql, sname)))
return sql_error(sql, 02, SQLSTATE(3F000) "CREATE %s%s: no such schema '%s'", KF, F, sname);
if (s == NULL)
s = cur_schema(sql);
type_list = create_type_list(sql, params, 1);
if ((sf = sql_bind_func_(sql->sa, s, fname, type_list, type)) != NULL && create) {
if (replace) {
sql_func *func = sf->func;
int action = 0;
if (!mvc_schema_privs(sql, s)) {
return sql_error(sql, 02, SQLSTATE(42000) "CREATE OR REPLACE %s%s: access denied for %s to schema ;'%s'", KF, F, stack_get_string(sql, "current_user"), s->base.name);
}
if (mvc_check_dependency(sql, func->base.id, !IS_PROC(func) ? FUNC_DEPENDENCY : PROC_DEPENDENCY, NULL))
return sql_error(sql, 02, SQLSTATE(42000) "CREATE OR REPLACE %s%s: there are database objects dependent on %s%s %s;", KF, F, kf, fn, func->base.name);
if (!func->s) {
return sql_error(sql, 02, SQLSTATE(42000) "CREATE OR REPLACE %s%s: not allowed to replace system %s%s %s;", KF, F, kf, fn, func->base.name);
}
if(mvc_drop_func(sql, s, func, action))
return sql_error(sql, 02, SQLSTATE(HY001) MAL_MALLOC_FAIL);
sf = NULL;
} else {
if (params) {
char *arg_list = NULL;
node *n;
for (n = type_list->h; n; n = n->next) {
char *tpe = subtype2string((sql_subtype *) n->data);
if (arg_list) {
char *t = arg_list;
arg_list = sql_message("%s, %s", arg_list, tpe);
_DELETE(t);
_DELETE(tpe);
} else {
arg_list = tpe;
}
}
(void)sql_error(sql, 02, SQLSTATE(42000) "CREATE %s%s: name '%s' (%s) already in use", KF, F, fname, arg_list);
_DELETE(arg_list);
list_destroy(type_list);
return NULL;
} else {
list_destroy(type_list);
return sql_error(sql, 02, SQLSTATE(42000) "CREATE %s%s: name '%s' already in use", KF, F, fname);
}
}
}
list_destroy(type_list);
if (create && !mvc_schema_privs(sql, s)) {
return sql_error(sql, 02, SQLSTATE(42000) "CREATE %s%s: insufficient privileges "
"for user '%s' in schema '%s'", KF, F,
stack_get_string(sql, "current_user"), s->base.name);
} else {
char *q = QUERY(sql->scanner);
list *l = NULL;
if (params) {
for (n = params->h; n; n = n->next) {
dnode *an = n->data.lval->h;
sql_add_param(sql, an->data.sval, &an->next->data.typeval);
}
l = sql->params;
if (l && list_length(l) == 1) {
sql_arg *a = l->h->data;
if (strcmp(a->name, "*") == 0) {
l = NULL;
vararg = TRUE;
}
}
}
if (!l)
l = sa_list(sql->sa);
if (res) {
restype = result_type(sql, res);
if (!restype)
return sql_error(sql, 01, SQLSTATE(42000) "CREATE %s%s: failed to get restype", KF, F);
}
if (body && lang > FUNC_LANG_SQL) {
char *lang_body = body->h->data.sval;
char *mod =
(lang == FUNC_LANG_R)?"rapi":
(lang == FUNC_LANG_C || lang == FUNC_LANG_CPP)?"capi":
(lang == FUNC_LANG_J)?"japi":
(lang == FUNC_LANG_PY)?"pyapi":
(lang == FUNC_LANG_MAP_PY)?"pyapimap":"unknown";
sql->params = NULL;
if (create) {
f = mvc_create_func(sql, sql->sa, s, fname, l, restype, type, lang, mod, fname, lang_body, (type == F_LOADER)?TRUE:FALSE, vararg, FALSE);
} else if (!sf) {
return sql_error(sql, 01, SQLSTATE(42000) "CREATE %s%s: R function %s.%s not bound", KF, F, s->base.name, fname );
} /*else {
sql_func *f = sf->func;
f->mod = _STRDUP("rapi");
f->imp = _STRDUP("eval");
if (res && restype)
f->res = restype;
f->sql = 0;
f->lang = FUNC_LANG_INT;
}*/
} else if (body) {
sql_arg *ra = (restype && !is_table)?restype->h->data:NULL;
list *b = NULL;
sql_schema *old_schema = cur_schema(sql);
if (create) { /* needed for recursive functions */
q = query_cleaned(q);
sql->forward = f = mvc_create_func(sql, sql->sa, s, fname, l, restype, type, lang, "user", q, q, FALSE, vararg, FALSE);
GDKfree(q);
}
sql->session->schema = s;
b = sequential_block(sql, (ra)?&ra->type:NULL, ra?NULL:restype, body, NULL, is_func);
sql->forward = NULL;
sql->session->schema = old_schema;
sql->params = NULL;
if (!b)
return NULL;
/* check if we have a return statement */
if (is_func && restype && !has_return(b)) {
return sql_error(sql, 01, SQLSTATE(42000) "CREATE %s%s: missing return statement", KF, F);
}
if (!is_func && !restype && has_return(b)) {
return sql_error(sql, 01, SQLSTATE(42000) "CREATE %s%s: procedures "
"cannot have return statements", KF, F);
}
/* in execute mode we instantiate the function */
if (instantiate || deps) {
return rel_psm_block(sql->sa, b);
}
} else {
char *fmod = qname_module(ext_name);
char *fnme = qname_fname(ext_name);
if (!fmod || !fnme)
return NULL;
sql->params = NULL;
if (create) {
q = query_cleaned(q);
f = mvc_create_func(sql, sql->sa, s, fname, l, restype, type, lang, fmod, fnme, q, FALSE, vararg, FALSE);
GDKfree(q);
} else if (!sf) {
return sql_error(sql, 01, SQLSTATE(42000) "CREATE %s%s: external name %s.%s not bound (%s.%s)", KF, F, fmod, fnme, s->base.name, fname );
} else {
sql_func *f = sf->func;
if (!f->mod || strcmp(f->mod, fmod))
f->mod = _STRDUP(fmod);
if (!f->imp || strcmp(f->imp, fnme))
f->imp = (f->sa)?sa_strdup(f->sa, fnme):_STRDUP(fnme);
if(!f->mod || !f->imp) {
_DELETE(f->mod);
_DELETE(f->imp);
return sql_error(sql, 02, SQLSTATE(HY001) "CREATE %s%s: could not allocate space", KF, F);
}
f->sql = 0; /* native */
f->lang = FUNC_LANG_INT;
}
}
}
return rel_create_function(sql->sa, s->base.name, f);
}
