OpOrder.Group (apache-cassandra API)

java.lang.Object
- org.apache.cassandra.utils.concurrent.OpOrder.Group

All Implemented Interfaces:

java.lang.AutoCloseable, java.lang.Comparable<OpOrder.Group>

Enclosing class:

OpOrder
```
public static final class OpOrder.Group
extends java.lang.Object
implements java.lang.Comparable<OpOrder.Group>, java.lang.AutoCloseable
```
Represents a group of identically ordered operations, i.e. all operations started in the interval between two barrier issuances. For each register() call this is returned, close() must be called exactly once. It should be treated like taking a lock().

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`await()`
`void`	`close()`	To be called exactly once for each register() call this object is returned for, indicating the operation is complete
`int`	`compareTo(OpOrder.Group that)`
`boolean`	`isBlocking()`
`boolean`	`isFinished()`
`boolean`	`isOldestLiveGroup()`
`void`	`notifyIfBlocking(WaitQueue.Signal signal)`
`OpOrder.Group`	`prev()`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - close
```
public void close()
```
    To be called exactly once for each register() call this object is returned for, indicating the operation is complete
    
    Specified by:
    
    close in interface java.lang.AutoCloseable
  - isFinished
```
public boolean isFinished()
```
  - isOldestLiveGroup
```
public boolean isOldestLiveGroup()
```
  - await
```
public void await()
```
  - prev
```
public OpOrder.Group prev()
```
  - isBlocking
```
public boolean isBlocking()
```
    Returns:
    
    true if a barrier we are behind is, or may be, blocking general progress, so we should try more aggressively to progress
  - notifyIfBlocking
```
public void notifyIfBlocking(WaitQueue.Signal signal)
```
  - compareTo
```
public int compareTo(OpOrder.Group that)
```
    Specified by:
    
    compareTo in interface java.lang.Comparable<OpOrder.Group>