cache « Entity « JPA Q&A





1. JPA2 Entities Caching    stackoverflow.com

As it stands I am using a JSF request scoped bean to do all my CRUD operations. As I'm sure you most likely know Tomcat doesn't provide container managed persistence so ...

2. How to configure caching for entities of Hibernate JPA 3.2.4    forum.hibernate.org

Hi, I have been struggling on finding how I can specify a JPA entity as cacheable and with eviction parameters. I am using Hibernate 3.2.4 and JBoss Cache 1.4.1SP13. There are many configuration examples out there, but all of them are using file-based parameters only(i.e. xml). Is there annotations for eviction parameters such as maxElementsInMemory, eternal and timeToLiveSeconds? Thanks a lot ...

4. How to reset cache on a specific entity    forum.hibernate.org

Hi There, Is it possible to reset the second-level cache in hibernate for a specific entity. for example in my case im planning to setup a entity called COUNTRY_LIST as read-only cache since the country list is static for almost all of the time but wondering what would happen if i want to update a country record, typical way we do ...

5. Hierarchical entities not cached?    forum.hibernate.org

Hi all, I'm curious if others have observed this as well. When an entity is extended it doesn't seem to be properly cached anymore. I see a lot of queries such as this in my log: select x,y,z from A where a.id = ? and A.DTYPE in('AA','BB','CC') The entities have been annotated with @Cache(usage = CacheConcurrencyStrategy.NONSTRICT_READ_WRITE) Is it possible that Hibernate ...

6. Entity cache not being found by Hibernate??    forum.hibernate.org

Hi all, I'm testing cache with hibernate, but from hibernate logging, I think it is not finding the entities in ehcache: 2004-03-15 15:48:20,430 DEBUG [net.sf.hibernate.impl.SessionImpl] loading [Processo#277] 2004-03-15 15:48:20,430 DEBUG [net.sf.hibernate.impl.SessionImpl] attempting to resolve [Processo#277] 2004-03-15 15:48:20,430 DEBUG [net.sf.hibernate.cache.ReadWriteCache] Cache lookup: 277 2004-03-15 15:48:20,430 DEBUG [net.sf.ehcache.hibernate.Plugin] key: 277 2004-03-15 15:48:20,430 DEBUG [net.sf.ehcache.store.MemoryStore] ProcessoCache: MemoryStore hit for 277 2004-03-15 15:48:20,430 DEBUG [net.sf.ehcache.store.MemoryStore] ...

7. Bulk Update on cached Entity    forum.hibernate.org

Section 13.4. DML-style operations states that Quote: As already discussed, automatic and transparent object/relational mapping is concerned with the management of object state. This implies that the object state is available in memory, hence manipulating (using the SQL Data Manipulation Language (DML) statements: INSERT, UPDATE, DELETE) data directly in the database will not affect in-memory state. However, Hibernate provides methods for ...

8. different cache CacheConcurrencyStrategy for same entity    forum.hibernate.org

Hi, I have hibernate annotated entities created in 'common' jar. This lib is then used by 3 different web apps, each one is interested in different cache strategy for entities. For example for 'person' @Entity annotated class, webapp 1 needs CacheConcurrencyStrategy.READ_ONLY but webapp 2 needs CacheConcurrencyStrategy.TRANSACTIONAL. My question is this: is it possible to use hibernate annotations like javax.persistence.Entity on entity ...

9. Checking whether entity objects are in the cache    forum.hibernate.org

Hi all, in our application, we are doing a manual prefetching of entity objects which we know we will be using. We do so based on the entity's IDs using a simple HQL query like the following: Code: from Entity e where e.id in (:ids) The drawback is that some of the entities loaded by the query may already be in ...





10. Caching problem with dependent entities    forum.hibernate.org

Hi, I have 2 classes mapped to same table and caching is enabled for both entities. Now when Entity1 gets updated; changes made by Entity1 is not reflected in Entity2 and I am still getting Hit for Entity2. For both entities I am using this annotation. @Cache(usage = org.hibernate.annotations.CacheConcurrencyStrategy.READ_WRITE, region="Region1") How can I get changes in Entity1 to get reflected in ...