org.springframework.batch.retry.policy
Class SoftReferenceMapRetryContextCache

java.lang.Object
  org.springframework.batch.retry.policy.SoftReferenceMapRetryContextCache

All Implemented Interfaces:

RetryContextCache

public class SoftReferenceMapRetryContextCache
extends Object
implements RetryContextCache

Map-based implementation of RetryContextCache. The map backing the cache of contexts is synchronized and its entries are soft-referenced, so may be garbage collected under pressure.

Author:

Dave Syer

See Also:

for non-soft referenced version

Field Summary

static int

DEFAULT_CAPACITY Default value for maximum capacity of the cache.

Constructor Summary

SoftReferenceMapRetryContextCache()
Create a SoftReferenceMapRetryContextCache with default capacity.

SoftReferenceMapRetryContextCache(int defaultCapacity)

Method Summary

boolean	containsKey(Object key)
RetryContext	get(Object key)
void	put(Object key, RetryContext context)
void	remove(Object key)
void	setCapacity(int capacity) Public setter for the capacity.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

DEFAULT_CAPACITY

public static final int DEFAULT_CAPACITY

Default value for maximum capacity of the cache. This is set to a reasonably low value (4096) to avoid users inadvertently filling the cache with item keys that are inconsistent.

See Also:

Constant Field Values

Constructor Detail

SoftReferenceMapRetryContextCache

public SoftReferenceMapRetryContextCache()

Create a SoftReferenceMapRetryContextCache with default capacity.

SoftReferenceMapRetryContextCache

public SoftReferenceMapRetryContextCache(int defaultCapacity)

Parameters:

defaultCapacity -

Method Detail

setCapacity

public void setCapacity(int capacity)

Public setter for the capacity. Prevents the cache from growing unboundedly if items that fail are misidentified and two references to an identical item actually do not have the same key. This can happen when users implement equals and hashCode based on mutable fields, for instance.

Parameters:

capacity - the capacity to set

containsKey

public boolean containsKey(Object key)

Specified by:

containsKey in interface RetryContextCache

get

public RetryContext get(Object key)

Specified by:

get in interface RetryContextCache

put

public void put(Object key,
                RetryContext context)

Specified by:

put in interface RetryContextCache

remove

public void remove(Object key)

Specified by:

remove in interface RetryContextCache