static void
ereport_op_str(const char *op, Jsonb *l, Jsonb *r)
{
const char *msgfmt;
const char *lstr;
const char *rstr;
AssertArg(r != NULL);
if (l == NULL)
{
msgfmt = "invalid expression: %s%s%s";
lstr = "";
}
else
{
msgfmt = "invalid expression: %s %s %s";
lstr = JsonbToCString(NULL, &l->root, VARSIZE(l));
}
rstr = JsonbToCString(NULL, &r->root, VARSIZE(r));
ereport(ERROR,
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
errmsg(msgfmt, lstr, op, rstr)));
}
static Datum
jsonb_num(Jsonb *j, PGFunction f)
{
const char *type;
if (f == numeric_int8)
type = "int8";
else if (f == numeric_int4)
type = "int4";
else if (f == numeric_float8)
type = "float8";
else
elog(ERROR, "unexpected type");
if (JB_ROOT_IS_SCALAR(j))
{
JsonbValue *jv;
jv = getIthJsonbValueFromContainer(&j->root, 0);
if (jv->type == jbvNumeric)
{
Datum n;
n = DirectFunctionCall1(f, NumericGetDatum(jv->val.numeric));
return n;
}
}
ereport(ERROR,
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
errmsg("%s cannot be converted to %s",
JsonbToCString(NULL, &j->root, VARSIZE(j)), type)));
return 0;
}
/*
* jsonb type output function
*/
Datum
jsonb_out(PG_FUNCTION_ARGS)
{
Jsonb *jb = PG_GETARG_JSONB(0);
char *out;
out = JsonbToCString(NULL, VARDATA(jb), VARSIZE(jb));
PG_RETURN_CSTRING(out);
}
/*
* jsonb type send function
*
* Just send jsonb as a version number, then a string of text
*/
Datum
jsonb_send(PG_FUNCTION_ARGS)
{
Jsonb *jb = PG_GETARG_JSONB(0);
StringInfoData buf;
StringInfo jtext = makeStringInfo();
int version = 1;
(void) JsonbToCString(jtext, VARDATA(jb), VARSIZE(jb));
pq_begintypsend(&buf);
pq_sendint(&buf, version, 1);
pq_sendtext(&buf, jtext->data, jtext->len);
pfree(jtext->data);
pfree(jtext);
PG_RETURN_BYTEA_P(pq_endtypsend(&buf));
}
Datum
jsonb_numeric(PG_FUNCTION_ARGS)
{
Jsonb *j = PG_GETARG_JSONB(0);
if (JB_ROOT_IS_SCALAR(j))
{
JsonbValue *jv;
jv = getIthJsonbValueFromContainer(&j->root, 0);
if (jv->type == jbvNumeric)
PG_RETURN_DATUM(datumCopy(NumericGetDatum(jv->val.numeric), false,
-1));
}
ereport(ERROR,
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
errmsg("%s cannot be converted to numeric",
JsonbToCString(NULL, &j->root, VARSIZE(j)))));
PG_RETURN_NULL();
}
