ClusterDescriptionChangedEvent (mongo-java-driver 3.12.10 API)乐学网一站式学习平台

java.lang.Object
- com.mongodb.event.ClusterDescriptionChangedEvent

```
public final class ClusterDescriptionChangedEvent
extends Object
```
An event signifying that the cluster description has changed.

Since:

3.3

Constructor Summary

Constructors
Constructor	Description
`ClusterDescriptionChangedEvent(ClusterId clusterId, ClusterDescription newDescription, ClusterDescription previousDescription)`	Constructs a new instance of the event.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`ClusterId`	`getClusterId()`	Gets the cluster id associated with this event.
`ClusterDescription`	`getNewDescription()`	Gets the new cluster description.
`ClusterDescription`	`getPreviousDescription()`	Gets the previous cluster description.
`String`	`toString()`

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

- Constructor Detail
  - ClusterDescriptionChangedEvent
```
public ClusterDescriptionChangedEvent(ClusterId clusterId,
                                      ClusterDescription newDescription,
                                      ClusterDescription previousDescription)
```
    Constructs a new instance of the event.
    
    Parameters:
    
    clusterId - the non-null cluster id
    
    newDescription - the non-null new cluster description
    
    previousDescription - the non-null previous cluster description
- Method Detail
  - getClusterId
```
public ClusterId getClusterId()
```
    Gets the cluster id associated with this event.
    
    Returns:
    
    the cluster id
  - getNewDescription
```
public ClusterDescription getNewDescription()
```
    Gets the new cluster description.
    
    Returns:
    
    the cluster description
  - getPreviousDescription
```
public ClusterDescription getPreviousDescription()
```
    Gets the previous cluster description.
    
    Returns:
    
    the previous cluster description
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object