Package javax.jdo.datastore

Class DataStoreCache.EmptyDataStoreCache

java.lang.Object

javax.jdo.datastore.DataStoreCache.EmptyDataStoreCache

All Implemented Interfaces:

DataStoreCache

Enclosing interface:

DataStoreCache

public static class DataStoreCache.EmptyDataStoreCache
extends Object
implements DataStoreCache

This class is an empty implementation of the DataStoreCache interface. It can be used by an implementation that does not support a second-level cache.

Since:

2.0

Nested Class Summary

Nested classes/interfaces inherited from interface javax.jdo.datastore.DataStoreCache

DataStoreCache.EmptyDataStoreCache

Constructor Summary

Constructors

Constructor	Description
EmptyDataStoreCache()

Method Summary

Modifier and Type	Method	Description
void	evict(Object oid)	Evict the parameter instance from the second-level cache.
void	evictAll()	Evict the parameter instances from the second-level cache.
void	evictAll(boolean subclasses, Class pcClass)	Evict the parameter instances from the second-level cache.
void	evictAll(Object... oids)	Evict the parameter instances from the second-level cache.
void	evictAll(Collection oids)	Evict the parameter instances from the second-level cache.
void	pin(Object oid)	Pin the parameter instance in the second-level cache.
void	pinAll(boolean subclasses, Class pcClass)	Pin instances in the second-level cache.
void	pinAll(Object... oids)	Pin the parameter instances in the second-level cache.
void	pinAll(Collection oids)	Pin the parameter instances in the second-level cache.
void	unpin(Object oid)	Unpin the parameter instance from the second-level cache.
void	unpinAll(boolean subclasses, Class pcClass)	Unpin instances from the second-level cache.
void	unpinAll(Object... oids)	Unpin the parameter instance from the second-level cache.
void	unpinAll(Collection oids)	Unpin the parameter instances from the second-level cache.

Methods inherited from class java.lang.Object

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

Constructor Detail

EmptyDataStoreCache

public EmptyDataStoreCache()

Method Detail

evict

public void evict(Object oid)

Description copied from interface: DataStoreCache

Evict the parameter instance from the second-level cache.

Specified by:

evict in interface DataStoreCache

Parameters:

oid - the object id of the instance to evict.

evictAll

public void evictAll()

Description copied from interface: DataStoreCache

Evict the parameter instances from the second-level cache. All instances in the PersistenceManager's cache are evicted from the second-level cache.

Specified by:

evictAll in interface DataStoreCache

evictAll

public void evictAll(Object... oids)

Description copied from interface: DataStoreCache

Evict the parameter instances from the second-level cache.

Specified by:

evictAll in interface DataStoreCache

Parameters:

oids - the object ids of the instance to evict.

evictAll

public void evictAll(Collection oids)

Description copied from interface: DataStoreCache

Evict the parameter instances from the second-level cache.

Specified by:

evictAll in interface DataStoreCache

Parameters:

oids - the object ids of the instance to evict.

evictAll

public void evictAll(boolean subclasses,
                     Class pcClass)

Description copied from interface: DataStoreCache

Evict the parameter instances from the second-level cache.

Specified by:

evictAll in interface DataStoreCache

Parameters:

subclasses - if true, evict instances of subclasses also

pcClass - the class of instances to evict

pin

public void pin(Object oid)

Description copied from interface: DataStoreCache

Pin the parameter instance in the second-level cache. This is a hint only, and will be ignored if the underlying cache doesn't support it.

Specified by:

pin in interface DataStoreCache

Parameters:

oid - the object id of the instance to pin.

pinAll

public void pinAll(Object... oids)

Description copied from interface: DataStoreCache

Pin the parameter instances in the second-level cache. This is a hint only, and will be ignored if the underlying cache doesn't support it.

Specified by:

pinAll in interface DataStoreCache

Parameters:

oids - the object ids of the instances to pin.

pinAll

public void pinAll(Collection oids)

Description copied from interface: DataStoreCache

Pin the parameter instances in the second-level cache. This is a hint only, and will be ignored if the underlying cache doesn't support it.

Specified by:

pinAll in interface DataStoreCache

Parameters:

oids - the object ids of the instances to pin.

pinAll

public void pinAll(boolean subclasses,
                   Class pcClass)

Description copied from interface: DataStoreCache

Pin instances in the second-level cache. This is a hint only, and will be ignored if the underlying cache doesn't support it.

Specified by:

pinAll in interface DataStoreCache

Parameters:

subclasses - if true, pin instances of subclasses also

pcClass - the class of instances to pin

unpin

public void unpin(Object oid)

Description copied from interface: DataStoreCache

Unpin the parameter instance from the second-level cache. This is a hint only, and will be ignored if the underlying cache doesn't support it.

Specified by:

unpin in interface DataStoreCache

Parameters:

oid - the object id of the instance to unpin.

unpinAll

public void unpinAll(Object... oids)

Description copied from interface: DataStoreCache

Unpin the parameter instance from the second-level cache. This is a hint only, and will be ignored if the underlying cache doesn't support it.

Specified by:

unpinAll in interface DataStoreCache

Parameters:

oids - the object id of the instance to evict.

unpinAll

public void unpinAll(Collection oids)

Description copied from interface: DataStoreCache

Unpin the parameter instances from the second-level cache. This is a hint only, and will be ignored if the underlying cache doesn't support it.

Specified by:

unpinAll in interface DataStoreCache

Parameters:

oids - the object ids of the instance to evict.

unpinAll

public void unpinAll(boolean subclasses,
                     Class pcClass)

Description copied from interface: DataStoreCache

Unpin instances from the second-level cache. This is a hint only, and will be ignored if the underlying cache doesn't support it.

Specified by:

unpinAll in interface DataStoreCache

Parameters:

subclasses - if true, unpin instances of subclasses also

pcClass - the class of instances to unpin