ExistenceChangedOperation (Camel :: Zookeeper 3.20.2 API)

java.lang.Object
- org.apache.camel.component.zookeeper.operations.ZooKeeperOperation<ResultType>
- - org.apache.camel.component.zookeeper.operations.FutureEventDrivenOperation<String>
  - - org.apache.camel.component.zookeeper.operations.ExistenceChangedOperation

All Implemented Interfaces:

WatchedEventProvider, org.apache.zookeeper.Watcher
```
public class ExistenceChangedOperation
extends FutureEventDrivenOperation<String>
```
DataChangedOperation is an watch driven operation. It will wait for an watched event indicating that a given node has been created or deleted.

Nested Class Summary
- Nested classes/interfaces inherited from interface org.apache.zookeeper.Watcher
  org.apache.zookeeper.Watcher.Event, org.apache.zookeeper.Watcher.WatcherType

Field Summary
- Fields inherited from class org.apache.camel.component.zookeeper.operations.ZooKeeperOperation
  connection, CONSTRUCTOR_ARGS, LOG, node, result, waitingThreads

Constructor Summary

Constructors
Constructor Description

ExistenceChangedOperation(org.apache.zookeeper.ZooKeeper connection, String znode)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`OperationResult<String>`	`getResult()`	Gets the result of this zookeeper operation, i.e.
`protected void`	`installWatch()`	Install the watcher to receive `WatchedEvent`s.

Methods inherited from class org.apache.camel.component.zookeeper.operations.FutureEventDrivenOperation
get, get, getWatchedEvent, getWatchedForTypes, process

Methods inherited from class org.apache.camel.component.zookeeper.operations.ZooKeeperOperation
cancel, createCopy, getNode, isCancelled, isDone, shouldProduceExchange

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

- Constructor Detail
  - ExistenceChangedOperation
```
public ExistenceChangedOperation(org.apache.zookeeper.ZooKeeper connection,
                                 String znode)
```
- Method Detail
  - installWatch
```
protected void installWatch()
```
    Description copied from class: FutureEventDrivenOperation
    
    Install the watcher to receive WatchedEvents. It should use the appropriate asynchronous ZooKeeper call to do this so as not to block the route from starting. Once one of the watched for types of event is received a call is made to getResult, which can use the appropriate synchronous call to retrieve the actual data.
    
    Specified by:
    
    installWatch in class FutureEventDrivenOperation<String>
  - getResult
```
public OperationResult<String> getResult()
```
    Description copied from class: ZooKeeperOperation
    
    Gets the result of this zookeeper operation, i.e. some data and the associated node stats
    
    Specified by:
    
    getResult in class ZooKeeperOperation<String>