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issue

com.objectdb.o.InternalException: null

After an error in a @PrePersist method in an Entity class, the database stopped working. Fortunately this was in development, but still worrying! The Entity class Bug Version: Priority: Normal Status: Active Replies: 5 Type:  Bug ...

 
forum_thread

ODB 2 JDO enhancement

If I label a class @PersistenceCapable do I still need to explicitly enhance? Do I need a package.jdo file? This question relates to experiences with ODB 1, in which one has to: a) create a package.jdo, and b) run the Enhancer In my experience, using this with Tomcat, and running the enhancer in the contextListener class, there would often be errors relating to 'class not persistent capable'. So, in ODB 2 is there a way to mark a class as @PersistentCapable, and then let ODB take care of enhancement automatically? #1 2010-11-09 20:03 If I label a class @PersistenceCapable do I still need to explicitly enhance? Do I need a package.jdo fil ...

 
release

2.5.1

Release date: 2013-05-30 Download (5.43 MB) Binary:  objectdb-2.5.1.zip You should start by following a  tutorial or reading the manual ...

 
forum_thread

Performance tuning, best practices

we have a system where we serve from a host process around 200 clients connected via webSockets (Jetty). The core process is running on a dedicated Windows 2012 server with 16 GByte RAM and 8 processor cores.  What is strange for us is that max 20% of the cpu resources are used and the IO subsystem is at maximum 30% of activity under heavy load but database queries are let's say not at the speed we would expect. We have currently 20.000.000 objects in the database, our configuration settings are: #1 2016-11-15 08:07 we have a system where we serve from a host process around 200 clients connected via webSockets (Jetty). The core ...

 
issue

Indexes broken after schema update

I don't want to keep creating these issues but the Exception tells me to :), I started a thread to see if anyone else has encountered this at http://www.objectdb.com/database/forum/484 Bug Version: 1.04 Priority: Normal Status: Active Replies: 7 Type:  Bug ...

 
api-jpa

contains(cls, primaryKey)

Whether the cache contains data for the given entity.(Method of javax.persistence.Cache)

 
api-jpa

countDistinct(x)

Create an aggregate expression applying the count distinct operation.(Method of javax.persistence.criteria.CriteriaBuilder)

 
api-jpa

javax.persistence.criteria.Fetch

Represents a join-fetched association or attribute.(Interface of JPA)

 
api-jpa

getVersion(type)

Return the attribute that corresponds to the version attribute of the entity or mapped superclass.(Method of javax.persistence.metamodel.IdentifiableType)

 
api-jpa

TableGenerator.initialValue

(Optional) The initial value to be used to initialize the column that stores the last value generated.(Annotation Element of javax.persistence.TableGenerator)