About settings

api-jpa

javax.persistence.criteria.MapJoin

The MapJoin 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.Map.(Interface of JPA)

 
api-jpa

javax.persistence.criteria.Root

A root type in the from clause.(Interface of JPA)

 
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)

 
forum_thread

ObjectDB shuts down

Hi, we have a problem with OBjectDB shuts down every few days, sometimes every day. It always happens in the morning ie. after several hours of inactivity although we are not sure if this is the reason. Last night we maintained constant activity during the whole night (user were frequently using the application) and DB was OK. #1 2014-02-17 13:34 Hi, we have a problem with OBjectDB shuts down every few days, sometimes every day. It always happens in the morn ...

 
api-jpa

javax.persistence.criteria.From

Represents a bound type, usually an entity that appears in the from clause, but may also be an embeddable belonging to an entity in the from clause.(Interface of JPA)

 
api-jpa

javax.persistence.criteria.Join

A join to an entity, embeddable, or basic type.(Interface of JPA)

 
forum_thread

multi thread application, id field sporadically null

We are testing objectDB with a multi thread application. Each thread has it's own entityManager created from a common factory. In one thread we receive sometimes an object from the database with the field that is declared as @Id having the value null (what is not correct, we checked that with the explorer). The class is declared like this: ... #1 2014-04-10 16:04 We are testing objectDB with a multi thread application. Each thread has it's own entityManager created from ...

 
manual

Deleting JPA Entity Objects

Explains how to use JPA to delete (remove) entity objects from the database.... is redundant. The difference between the two settings is in the response to disconnecting a relationship. For example, such ...

 
api-jpa

getFetches()

Return the fetch joins that have been made from this type.(Method of javax.persistence.criteria.FetchParent)

 
api-jpa

getCorrelatedJoins()

Return the correlated joins of the subquery.(Method of javax.persistence.criteria.Subquery)