org.datanucleus.store.query.cache

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 and 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

Constructor Summary

Constructors

Constructor and Description
AbstractQueryResultsCache(NucleusContext nucleusCtx)

Method Summary

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.datanucleus.store.query.cache.QueryResultsCache

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

Field Detail

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 Detail

AbstractQueryResultsCache

public AbstractQueryResultsCache(NucleusContext nucleusCtx)