int ol_unjar(ol_database *db, const char *key, size_t klen, unsigned char **data, size_t *dsize) {
if (db->is_enabled(OL_F_DISABLE_TX, &db->feature_set) ||
db->state == OL_S_COMMITTING || db->state == OL_S_STARTUP) {
/* Fake a transaction: */
ol_transaction stack_tx = {
.tx_id = 0,
.parent_db = NULL,
.transaction_db = db
};
return olt_unjar(&stack_tx, key, klen, data, dsize);
}
ol_transaction *tx = olt_begin(db);
int unjar_ret = OL_SUCCESS;
check(tx != NULL, "Could not begin transaction.");
unjar_ret = olt_unjar(tx, key, klen, data, dsize);
check(unjar_ret == OL_SUCCESS, "Could not unjar.");
check(olt_commit(tx) == OL_SUCCESS, "Could not commit transaction.");
return OL_SUCCESS;
error:
if (tx != NULL && unjar_ret != OL_SUCCESS)
olt_abort(tx);
return OL_FAILURE;
}
vector *ol_bulk_unjar(ol_database *db, const ol_key_array keys, const size_t num_keys) {
ol_transaction *tx = NULL;
vector *to_return = NULL;
check(db != NULL, "Cannot unjar on NULL database.");
check((tx = olt_begin(db)) != NULL, "Could not begin transaction.");
to_return = vector_new(sizeof(unsigned char *), 256);
unsigned int i;
for (i = 0; i < num_keys; i++) {
const char *key = keys[i];
unsigned char *item = NULL;
size_t item_size = 0;
olt_unjar(tx, key, strnlen(key, KEY_SIZE), &item, &item_size);
if (item != NULL) {
vector_append_ptr(to_return, item);
} else {
vector_append_ptr(to_return, NULL);
}
}
check(olt_commit(tx) == 0, "Could not commit unjar transaction.");
return to_return;
error:
return NULL;
}
int olt_exists(ol_transaction *tx, const char *key, size_t klen) {
return olt_unjar(tx, key, klen, NULL, NULL);
}
