PriorityQueueNode (Netty API Reference (4.2.7.Final))

```
public interface PriorityQueueNode
```
Provides methods for DefaultPriorityQueue to maintain internal state. These methods should generally not be used outside the scope of DefaultPriorityQueue.

Field Summary

Fields
Modifier and Type Field Description

static int INDEX_NOT_IN_QUEUE
This should be used to initialize the storage returned by priorityQueueIndex(DefaultPriorityQueue).

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`int`	`priorityQueueIndex(DefaultPriorityQueue<?> queue)`	Get the last value set by `priorityQueueIndex(DefaultPriorityQueue, int)` for the value corresponding to `queue`.
`void`	`priorityQueueIndex(DefaultPriorityQueue<?> queue, int i)`	Used by `DefaultPriorityQueue` to maintain state for an element in the queue.

- Field Detail
  - INDEX_NOT_IN_QUEUE
```
static final int INDEX_NOT_IN_QUEUE
```
    This should be used to initialize the storage returned by priorityQueueIndex(DefaultPriorityQueue).
    
    See Also:
    
    Constant Field Values
- Method Detail
  - priorityQueueIndex
```
int priorityQueueIndex(DefaultPriorityQueue<?> queue)
```
    Get the last value set by priorityQueueIndex(DefaultPriorityQueue, int) for the value corresponding to queue.
    Throwing exceptions from this method will result in undefined behavior.
  - priorityQueueIndex
```
void priorityQueueIndex(DefaultPriorityQueue<?> queue,
                        int i)
```
    Used by DefaultPriorityQueue to maintain state for an element in the queue.
    Throwing exceptions from this method will result in undefined behavior.
    
    Parameters:
    
    queue - The queue for which the index is being set.
    
    i - The index as used by DefaultPriorityQueue.