Package org.apache.cassandra.index.sasi.utils.trie

Interface Cursor<K,V>

public interface Cursor<K,V>

A Cursor can be used to traverse a Trie, visit each node step by step and make Cursor.Decisions on each step how to continue with traversing the Trie.

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static enum	Cursor.Decision	The Cursor.Decision tells the Cursor what to do on each step while traversing the Trie.

Method Summary

Modifier and Type	Method	Description
Cursor.Decision	select(Map.Entry<? extends K,? extends V> entry)	Called for each Map.Entry in the Trie.

Method Details

select

Cursor.Decision select(Map.Entry<? extends K,? extends V> entry)

Called for each Map.Entry in the Trie. Return Cursor.Decision.EXIT to finish the Trie operation, Cursor.Decision.CONTINUE to go to the next Map.Entry, Cursor.Decision.REMOVE to remove the Map.Entry and continue iterating or Cursor.Decision.REMOVE_AND_EXIT to remove the Map.Entry and stop iterating. Note: Not all operations support Cursor.Decision.REMOVE.