Method Seek

cursor.go:120–136

Seek moves the cursor to a given key using a b-tree search and returns it. If the key does not exist then the next key is used. If no keys follow, a nil key is returned. The returned key and value are only valid for the life of the transaction.

(seek []byte)

// follow, a nil key is returned.
// The returned key and value are only valid for the life of the transaction.
func (c *Cursor) Seek(seek []byte) (key []byte, value []byte) {
	common.Assert(c.bucket.tx.db != nil, "tx closed")

	k, v, flags := c.seek(seek)

	// If we ended up after the last element of a page then move to the next one.
	if ref := &c.stack[len(c.stack)-1]; ref.index >= ref.count() {
		k, v, flags = c.next()
	}

	if k == nil {
		return nil, nil
	} else if (flags & uint32(common.BucketLeafFlag)) != 0 {
		return k, nil
	}
	return k, v
}

// Delete removes the current key/value under the cursor from the bucket.
// Delete fails if current key/value is a bucket or if the transaction is not writable.