Class AbstractQueryResultsCache

java.lang.Object

org.datanucleus.store.query.cache.AbstractQueryResultsCache

All Implemented Interfaces:

Serializable, QueryResultsCache

Direct Known Subclasses:

JavaxCacheQueryResultCache

public abstract class AbstractQueryResultsCache
extends Object
implements QueryResultsCache

Root implementation of a query results cache, providing provessing of common persistence properties.

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
protected String	cacheName	Name of the cache to use.
protected boolean	clearAtClose	Whether to clear out all objects at close().
protected long	expiryMillis	Timeout for cache object expiration (milliseconds).
protected int	maxSize	Maximum size of cache (if supported by the plugin).
protected NucleusContext	nucleusCtx
private static final long	serialVersionUID

Constructor Summary

Constructors

Constructor	Description
AbstractQueryResultsCache(NucleusContext nucleusCtx)

Method Summary

Methods inherited from class Object

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

Methods inherited from interface QueryResultsCache

close, contains, evict, evict, evict, evictAll, get, isEmpty, pin, pin, put, size, unpin, unpin

Field Details

serialVersionUID

private static final long serialVersionUID

See Also:

• Constant Field Values

nucleusCtx

protected NucleusContext nucleusCtx

maxSize

protected int maxSize

Maximum size of cache (if supported by the plugin).

clearAtClose

protected boolean clearAtClose

Whether to clear out all objects at close().

expiryMillis

protected long expiryMillis

Timeout for cache object expiration (milliseconds).

cacheName

protected String cacheName

Name of the cache to use.

Constructor Details

AbstractQueryResultsCache

public AbstractQueryResultsCache(NucleusContext nucleusCtx)