Function NewIterator

iterator.go:38–61

Returns a new iterator. The Release method must be called when finished with the iterator.

(tx *Tx, bucket string, options IteratorOptions)

// Returns a new iterator.
// The Release method must be called when finished with the iterator.
func NewIterator(tx *Tx, bucket string, options IteratorOptions) *Iterator {
	b, err := tx.db.bucketMgr.GetBucket(DataStructureBTree, bucket)
	if err != nil {
		return nil
	}
	iterator := &Iterator{
		tx:      tx,
		options: options,
		iter:    tx.db.Index.BTree.GetWithDefault(b.Id).Iter(),
	}

	// Initialize position and cache the first item
	if options.Reverse {
		iterator.valid = iterator.iter.Last()
	} else {
		iterator.valid = iterator.iter.First()
	}

	if iterator.valid {
		iterator.currentItem = iterator.iter.Item()
	}

	return iterator
}

func (it *Iterator) Rewind() bool {
	if it.options.Reverse {