NoOpProducer (Solr 9.0.0 core API)

java.lang.Object
- org.apache.solr.cluster.events.ClusterEventProducerBase
- - org.apache.solr.cluster.events.NoOpProducer

All Implemented Interfaces:

Closeable, AutoCloseable, ClusterSingleton, ClusterEventProducer
```
public final class NoOpProducer
extends ClusterEventProducerBase
```
No-op implementation of ClusterEventProducer. This implementation doesn't generate any events.

Nested Class Summary
- Nested classes/interfaces inherited from interface org.apache.solr.cloud.ClusterSingleton
  ClusterSingleton.State

Field Summary

Fields
Modifier and Type Field Description

static Set<ClusterEvent.EventType> ALL_EVENT_TYPES
- Fields inherited from class org.apache.solr.cluster.events.ClusterEventProducerBase
  cc, listeners, state
- Fields inherited from interface org.apache.solr.cluster.events.ClusterEventProducer
  PLUGIN_NAME

Constructor Summary

Constructors
Constructor Description

NoOpProducer(CoreContainer cc)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`Set<ClusterEvent.EventType>`	`getSupportedEventTypes()`
`void`	`start()`	Start the operation of the component.
`void`	`stop()`	Stop the operation of the component.

Methods inherited from class org.apache.solr.cluster.events.ClusterEventProducerBase
close, fireEvent, getState, registerListener, unregisterListener

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

Methods inherited from interface org.apache.solr.cluster.events.ClusterEventProducer
getName, unregisterListener

- Field Detail
  - ALL_EVENT_TYPES
```
public static final Set<ClusterEvent.EventType> ALL_EVENT_TYPES
```
- Constructor Detail
  - NoOpProducer
```
public NoOpProducer(CoreContainer cc)
```
- Method Detail
  - getSupportedEventTypes
```
public Set<ClusterEvent.EventType> getSupportedEventTypes()
```
    Specified by:
    
    getSupportedEventTypes in class ClusterEventProducerBase
  - start
```
public void start()
           throws Exception
```
    Description copied from interface: ClusterSingleton
    
    Start the operation of the component. Initially this method should set the state to STARTING, and on success it should set the state to RUNNING.
    
    Throws:
    
    Exception - on startup errors. The component should revert to the STOPPED state.
  - stop
```
public void stop()
```
    Description copied from interface: ClusterSingleton
    
    Stop the operation of the component. Initially this method should set the state to STOPPING, and on return it should set the state to STOPPED. Components should also avoid holding any resource when in STOPPED state.