MessageGroupHashBucketFactory (ActiveMQ 5.17.0 API)

java.lang.Object
- org.apache.activemq.broker.region.group.MessageGroupHashBucketFactory

All Implemented Interfaces:

MessageGroupMapFactory
```
public class MessageGroupHashBucketFactory
extends Object
implements MessageGroupMapFactory
```
A factory to create instances of SimpleMessageGroupMap when implementing the Message Groups functionality.

Constructor Summary

Constructors
Constructor Description

MessageGroupHashBucketFactory()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`MessageGroupMap`	`createMessageGroupMap()`
`int`	`getBucketCount()`
`int`	`getCacheSize()`
`void`	`setBucketCount(int bucketCount)`	Sets the number of hash buckets to use for the message group functionality.
`void`	`setCacheSize(int cacheSize)`

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

- Constructor Detail
  - MessageGroupHashBucketFactory
```
public MessageGroupHashBucketFactory()
```
- Method Detail
  - createMessageGroupMap
```
public MessageGroupMap createMessageGroupMap()
```
    Specified by:
    
    createMessageGroupMap in interface MessageGroupMapFactory
  - getBucketCount
```
public int getBucketCount()
```
  - setBucketCount
```
public void setBucketCount(int bucketCount)
```
    Sets the number of hash buckets to use for the message group functionality. This is only applicable to using message groups to parallelize processing of a queue while preserving order across an individual JMSXGroupID header value. This value sets the number of hash buckets that will be used (i.e. the maximum possible concurrency).
  - getCacheSize
```
public int getCacheSize()
```
  - setCacheSize
```
public void setCacheSize(int cacheSize)
```