Cursor (OpenDJ Public API Javadoc 7.0.2 Documentation)

Type Parameters:

K - Type of the record's key

V - Type of the record's value

All Superinterfaces:

AutoCloseable, Closeable, SequentialCursor<K,V>

All Known Implementing Classes:

EmptyCursor
```
public interface Cursor<K,V>
extends SequentialCursor<K,V>
```
Sequential cursor extended with navigation methods.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`boolean`	`positionToIndex(int index)`	Positions the cursor to the specified index within the tree.
`boolean`	`positionToKey(ByteSequence key)`	Positions the cursor to the provided key if it exists in the tree.
`boolean`	`positionToKeyOrNext(ByteSequence key)`	Positions the cursor to the provided key if it exists in the tree, or else the lesser key greater than the provided key in the tree.
`boolean`	`positionToLastKey()`	Positions the cursor to the last key in the tree.

Methods inherited from interface org.opends.server.backends.pluggable.spi.SequentialCursor
close, delete, getKey, getValue, isDefined, next

- Method Detail
  - positionToKey
```
boolean positionToKey(ByteSequence key)
```
    Positions the cursor to the provided key if it exists in the tree.
    
    Parameters:
    
    key - the key where to position the cursor
    
    Returns:
    
    true if the cursor could be positioned to the key, false otherwise
  - positionToKeyOrNext
```
boolean positionToKeyOrNext(ByteSequence key)
```
    Positions the cursor to the provided key if it exists in the tree, or else the lesser key greater than the provided key in the tree.
    
    Parameters:
    
    key - the key where to position the cursor
    
    Returns:
    
    true if the cursor could be positioned to the key or the next one, false otherwise
  - positionToLastKey
```
boolean positionToLastKey()
```
    Positions the cursor to the last key in the tree.
    
    Returns:
    
    true if the cursor could be positioned to the last key, false otherwise
  - positionToIndex
```
boolean positionToIndex(int index)
```
    Positions the cursor to the specified index within the tree. Implementations may take advantage of optimizations provided by the underlying storage, such as counted B-Trees.
    
    Parameters:
    
    index - the index where the cursor should be positioned, (0 is the first record).
    
    Returns:
    
    true if the cursor could be positioned to the index, false otherwise