com.atlassian.crowd.util.persistence.hibernate
Class EhCacheProvider

java.lang.Object
  com.atlassian.crowd.util.persistence.hibernate.EhCacheProvider

All Implemented Interfaces:

org.hibernate.cache.CacheProvider

public class EhCacheProvider
extends java.lang.Object
implements org.hibernate.cache.CacheProvider

Cache Provider plugin for ehcache-1.2. New in this provider are ehcache support for multiple Hibernate session factories, each with its own ehcache configuration, and non Serializable keys and values. Ehcache-1.2 also has many other features such as cluster support and listeners, which can be used seamlessly simply by configurion in ehcache.xml.

Use hibernate.cache.provider_class=com.atlassian.crowd.util.persistence.hibernate.EhCacheProvider in the Hibernate configuration to enable this provider for Hibernate's second level cache.

When configuring multiple ehcache CacheManagers, as you would where you have multiple Hibernate Configurations and multiple SessionFactories, specify in each Hibernate configuration the ehcache configuration using the property hibernate.cache.provider_configuration_file_resource_path An example to set an ehcache configuration called ehcache-2.xml would be hibernate.cache.provider_configuration_file_resource_path=/ehcache-2.xml. If the leading slash is not there one will be added. The configuration file will be looked for in the root of the classpath.

Updated for ehcache-1.2. Note this provider requires ehcache-1.2.jar. Make sure ehcache-1.1.jar or earlier is not in the classpath or it will not work.

See http://ehcache.sf.net for documentation on ehcache

Author:

Greg Luck, Emmanuel Bernard

Constructor Summary

EhCacheProvider(net.sf.ehcache.CacheManager cacheManager)

Method Summary

org.hibernate.cache.Cache	buildCache(java.lang.String name, java.util.Properties properties) Builds a Cache.
boolean	isMinimalPutsEnabledByDefault()
long	nextTimestamp() Returns the next timestamp.
void	start(java.util.Properties properties) Callback to perform any necessary initialization of the underlying cache implementation during SessionFactory construction.
void	stop() Callback to perform any necessary cleanup of the underlying cache implementation during SessionFactory.close().

Methods inherited from class java.lang.Object

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

Constructor Detail

EhCacheProvider

public EhCacheProvider(net.sf.ehcache.CacheManager cacheManager)

Method Detail

buildCache

public org.hibernate.cache.Cache buildCache(java.lang.String name,
                                            java.util.Properties properties)
                                     throws org.hibernate.cache.CacheException

Builds a Cache.

Even though this method provides properties, they are not used. Properties for EHCache are specified in the ehcache.xml file. Configuration will be read from ehcache.xml for a cache declaration where the name attribute matches the name parameter in this builder.

Specified by:

buildCache in interface org.hibernate.cache.CacheProvider

Parameters:

name - the name of the cache. Must match a cache configured in ehcache.xml

properties - not used

Returns:

a newly built cache will be built and initialised

Throws:

org.hibernate.cache.CacheException - inter alia, if a cache of the same name already exists

nextTimestamp

public long nextTimestamp()

Returns the next timestamp.

Specified by:

nextTimestamp in interface org.hibernate.cache.CacheProvider

start

public void start(java.util.Properties properties)
           throws org.hibernate.cache.CacheException

Callback to perform any necessary initialization of the underlying cache implementation during SessionFactory construction.

Specified by:

start in interface org.hibernate.cache.CacheProvider

Parameters:

properties - current configuration settings.

Throws:

org.hibernate.cache.CacheException

stop

public void stop()

Callback to perform any necessary cleanup of the underlying cache implementation during SessionFactory.close().

Specified by:

stop in interface org.hibernate.cache.CacheProvider

isMinimalPutsEnabledByDefault

public boolean isMinimalPutsEnabledByDefault()

Specified by:

isMinimalPutsEnabledByDefault in interface org.hibernate.cache.CacheProvider