I’m using Hibernate 4.3.11.Final with ehcache and Spring 3.2.11.RELEASE. I have the below Spring/ehcache configuration …
<cache:annotation-driven key-generator="cacheKeyGenerator" />
<bean id="cacheKeyGenerator" class="org.mainco.subco.myproject.util.CacheKeyGenerator" />
<bean id="cacheManager"
class="org.springframework.cache.ehcache.EhCacheCacheManager"
p:cacheManager-ref="ehcache"/>
<bean id="ehcache" class="org.springframework.cache.ehcache.EhCacheManagerFactoryBean"
p:configLocation="classpath:ehcache.xml"
p:shared="true" />
<util:map id="jpaPropertyMap">
<entry key="hibernate.show_sql" value="true" />
<entry key="hibernate.dialect" value="org.mainco.subco.myproject.jpa.subcoMysql5Dialect" />
<entry key="hibernate.cache.region.factory_class" value="org.hibernate.cache.ehcache.EhCacheRegionFactory" />
<entry key="hibernate.cache.provider_class" value="org.hibernate.cache.EhCacheProvider" />
<entry key="hibernate.cache.use_second_level_cache" value="true" />
<entry key="hibernate.cache.use_query_cache" value="false" />
<entry key="hibernate.generate_statistics" value="true" />
<entry key="javax.persistence.sharedCache.mode" value="ENABLE_SELECTIVE" />
</util:map>
<bean id="sharedEntityManager"
class="org.springframework.orm.jpa.support.SharedEntityManagerBean">
<property name="entityManagerFactory" ref="entityManagerFactory" />
</bean>
<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory" />
</bean>
using the below custom key generator …
public class CacheKeyGenerator implements KeyGenerator
{
@Override
public Object generate(final Object target, final Method method,
final Object... params) {
final List<Object> key = new ArrayList<Object>();
key.add(method.getDeclaringClass().getName());
key.add(method.getName());
for (final Object o : params) {
key.add(o);
}
return key;
}
}
As you can see, the keys are generated based on the class name, the method name, and then any parameters. My question is, if I want to remove from my second-level cache all entries whose cache key’s first entry (because my key is an array) is “org.mainco.subco.standards.repo.StandardsDao”, how would I write such a @CacheEvict rule? The below does not work …
@Caching(evict = { @CacheEvict(value="main", key="{'org.mainco.subco.standards.repo.StandardsDao'}")})
public int deleteCorrelationTypeContexts(String categoryId)
Any guidance is appreciated. One constraint, it is not an option to use multiple second-level caches — I can only use one for this application (the one named “main”).
