Javadoc: ConcurrentReferenceHashMap.ReferenceManager (spring-core 3.2.10.RELEASE API)

java.lang.Object
- org.springframework.util.ConcurrentReferenceHashMap.ReferenceManager

Enclosing class:

ConcurrentReferenceHashMap< K, V>
```
protected class ConcurrentReferenceHashMap.ReferenceManager
extends Object
```
Strategy class used to manage ConcurrentReferenceHashMap.References. This class can be overridden if alternative reference types need to be supported.

Constructor Summary

Constructors

Modifier Constructor and Description

protected ConcurrentReferenceHashMap.ReferenceManager()

Method Summary

Methods
Modifier and Type	Method and Description
`ConcurrentReferenceHashMap.Reference<K,V>`	`createReference(ConcurrentReferenceHashMap.Entry<K,V> entry, int hash, ConcurrentReferenceHashMap.Reference<K,V> next)` Factory method used to create a new `ConcurrentReferenceHashMap.Reference`.
`ConcurrentReferenceHashMap.Reference<K,V>`	`pollForPurge()` Return any reference that has been garbage collected and can be purged from the underlying structure or `null` if no references need purging.

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

- Constructor Detail
  - ConcurrentReferenceHashMap.ReferenceManager
```
protected ConcurrentReferenceHashMap.ReferenceManager()
```
- Method Detail
  - createReference
```
public ConcurrentReferenceHashMap.Reference<K,V> createReference(ConcurrentReferenceHashMap.Entry<K,V> entry,
                                                        int hash,
                                                        ConcurrentReferenceHashMap.Reference<K,V> next)
```
    Factory method used to create a new ConcurrentReferenceHashMap.Reference.
    
    Parameters:
    
    entry - the entry contained in the reference
    
    hash - the hash
    
    next - the next reference in the chain or null
    
    Returns:
    
    a new ConcurrentReferenceHashMap.Reference
  - pollForPurge
```
public ConcurrentReferenceHashMap.Reference<K,V> pollForPurge()
```
    Return any reference that has been garbage collected and can be purged from the underlying structure or null if no references need purging. This method must be thread safe and ideally should not block when returning null. References should be returned once and only once.
    
    Returns:
    
    a reference to purge or null