About performance

forum_thread

Internationalization

What would be a good way to implement internationalization with ObjectDB? Let's say we do have a product catalog and we need to provide category and product data internationally. With a relational database we most probably would have two tables, one for locale neutral information, i.e. Product with fields SKU, price, etc. and another one for locale information only, i.e. ProductLocale with fields name, description, etc. ... annotation, but how would this impact the performance, let's say when there are millions of products each with ... long HTML code, wouldn't that severely impact the performance? What would you suggest to do instead? Thanks a lot ...

 
forum_thread

Query becomes slower on moving from ObjectDB 1.x to ObjectDB 2.x

Hi, I upgraded the odb file using converter.jar which is having 15943 entry. Previously, with object 1.x, the same query was getting executed within an seconds and now the same is taking around 40 seconds in object db 2.x I have build the query using the follwoing Query query = persistanceManager.newQuery("LogEntryAttrebuteImpl.calss", "typeIndexes.contains(this.type) && logEntryIdList.contains(this.logEntryId)"); ... 1.x, so it should be possible to get at least similar performance for this query with ObjectDB 2.x. Maybe an index is ... database and a simple test program that demonstrates this performance problem. Your other question will be moved to a separate ...

 
forum_thread

Internal objectdb error when execute a flush

We get an internal objectdb error, when we execute a flush. Why? What's wrong? It performs with version objectdb-2.6.4_04. It does not perform with version objectdb-2.6.6_04.   #1 2016-02-16 13:48 We get an internal objectdb error, when we execute a flush. Why? What's wrong? It performs wi ...

 
api-jpa

javax.persistence.criteria.ListJoin

The ListJoin interface is the type of the result of joining to a collection over an association or element collection that has been specified as a java.util.List.(Interface of JPA)

 
release

2.2.4

... in criteria queries . Improved Explorer performance by disabling EAGER fetch. Fixed critical bugs in ... such as List<String> ). Improved performance of eager fetch in queries. Added Maven build ...

 
api-jpa

javax.persistence.criteria.Predicate

The type of a simple or compound predicate: a conjunction or disjunction of restrictions.(Interface of JPA)

 
api-jpa

javax.persistence.criteria.PluralJoin

The PluralJoin interface defines functionality that is common to joins to all collection types.(Interface of JPA)

 
api-jpa

javax.persistence.criteria.CollectionJoin

The CollectionJoin interface is the type of the result of joining to a collection over an association or element collection that has been specified as a java.util.Collection.(Interface of JPA)

 
api-jpa

javax.persistence.criteria.CriteriaBuilder.In

Interface used to build in predicates.(Interface of JPA)

 
api-jpa

lock(entity, lockMode, properties)

Lock an entity instance that is contained in the persistence context with the specified lock mode type and with specified properties.(Method of javax.persistence.EntityManager)