Golang fdb_iterator_opt_t Examples

Example #1

File: iterator.go Project: jchris/indexing

// IteratorSequenceInit create an iterator to traverse a ForestDB snapshot by sequence number range
func (k *KVStore) IteratorSequenceInit(startSeq, endSeq SeqNum, opt IteratorOpt) (*Iterator, error) {
	k.Lock()
	defer k.Unlock()

	rv := Iterator{db: k}
	Log.Tracef("fdb_iterator_sequence_init call k:%p db:%v sseq:%v eseq:%v opt:%v", k, k.db, startSeq, endSeq, opt)
	errNo := C.fdb_iterator_sequence_init(k.db, &rv.iter, C.fdb_seqnum_t(startSeq), C.fdb_seqnum_t(endSeq), C.fdb_iterator_opt_t(opt))
	Log.Tracef("fdb_iterator_sequence_init retn k:%p rv:%v", k, rv.iter)
	if errNo != RESULT_SUCCESS {
		return nil, Error(errNo)
	}
	return &rv, nil
}

Example #2

File: iterator.go Project: jchris/indexing

// IteratorInit creates an iterator to traverse a ForestDB snapshot by key range
func (k *KVStore) IteratorInit(startKey, endKey []byte, opt IteratorOpt) (*Iterator, error) {
	k.Lock()
	defer k.Unlock()

	var sk, ek unsafe.Pointer

	lensk := len(startKey)
	lenek := len(endKey)

	if lensk != 0 {
		sk = unsafe.Pointer(&startKey[0])
	}

	if lenek != 0 {
		ek = unsafe.Pointer(&endKey[0])
	}

	rv := Iterator{db: k}
	Log.Tracef("fdb_iterator_init call k:%p db:%v sk:%v ek:%v opt:%v", k, k.db, sk, ek, opt)
	errNo := C.fdb_iterator_init(k.db, &rv.iter, sk, C.size_t(lensk), ek, C.size_t(lenek), C.fdb_iterator_opt_t(opt))
	Log.Tracef("fdb_iterator_init retn k:%p rv:%v", k, rv.iter)
	if errNo != RESULT_SUCCESS {
		return nil, Error(errNo)
	}
	return &rv, nil
}