NullIndexKey (Ignite 2.17.0)

java.lang.Object
- org.apache.ignite.internal.cache.query.index.sorted.keys.NullIndexKey

All Implemented Interfaces:

IndexKey
```
public class NullIndexKey
extends Object
implements IndexKey
```
Represents null value stored in index row or query.

- Field Summary
  
  Fields
  Modifier and Type Field Description
  
  static NullIndexKey INSTANCE
  Instance.
- Method Summary
  
  All Methods Instance Methods Concrete Methods
  Modifier and Type Method Description
  
  int compare(IndexKey o)
  
  Object key()
  
  String toString()
  
  IndexKeyType type()
  - Methods inherited from class java.lang.Object
    clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
  - Methods inherited from interface org.apache.ignite.internal.cache.query.index.sorted.keys.IndexKey
    isComparableTo

- Field Detail
  - INSTANCE
```
public static final NullIndexKey INSTANCE
```
    Instance.
- Method Detail
  - compare
```
public int compare(IndexKey o)
```
    Specified by:
    
    compare in interface IndexKey
    
    Returns:
    
    Comparison result with other IndexKey.
  - key
```
public Object key()
```
    Specified by:
    
    key in interface IndexKey
    
    Returns:
    
    Value of this key.
  - type
```
public IndexKeyType type()
```
    Specified by:
    
    type in interface IndexKey
    
    Returns:
    
    Index key type IndexKeyType.
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object