Function IndexKey

x/keys.go:258–269

IndexKey generates a index key with the given attribute and term. The structure of an index key is as follows: byte 0: key type prefix (set to DefaultPrefix or ByteSplit if part of a multi-part list) byte 1-2: length of attr next len(attr) bytes: value of attr next byte: data type prefix (set to By

(attr, term string)

// next eight bytes (optional): if the key corresponds to a split list, the startUid of
// the split stored in this key.
func IndexKey(attr, term string) []byte {
	extra := 1 + len(term) // ByteIndex + term
	buf, prefixLen := generateKey(DefaultPrefix, attr, extra)

	rest := buf[prefixLen:]
	rest[0] = ByteIndex

	rest = rest[1:]
	AssertTrue(len(rest) == len(term))
	AssertTrue(len(term) == copy(rest, term))
	return buf
}

// CountKey generates a count key with the given attribute and uid.
// The structure of a count key is as follows: