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In memory processing for ObjectDB

Hi there ! We are building a platform for trades processing where we want to keep our processing speeds very high. We like ObjectDb because its simplicity and the performance benchmarks, but to take it to next level really we wanted to check whether is there any In memory mode available for ObjectDB where recovery is possible, something like prevalyer etc. ... several different caches: Back end page cache Front end shared L2 data cache ...

 
tutorial

Step 2: Entity Class and Persistence Unit

Explains how to define a JPA entity class and a persistence unit (persistence.xml) in a NetBeans Java EE 6 web application. To store objects in an ObjectDB database using JPA we need to define an entity class: Open the [New Entity Class] dialog box, e.g. by right clicking the project node (in the [Projects] window) and selecting New > Entity Clas ...

 
release

2.7.3

... Fixed a NullPointerException when using "objectdb.temp.page-file" ( issue #315 ) Added logging and suspend exception ... access mode. Fixed a bug in allowing page sizes larger than 64KB (which are not supported by ObjectDB). ...

 
release

2.7.3_01

... Fixed a NullPointerException when using "objectdb.temp.page-file" ( issue #315 ) Added logging and suspend exception ... access mode. Fixed a bug in allowing page sizes larger than 64KB (which are not supported by ObjectDB). ...

 
api-jpa

executeUpdate()

Execute an update or delete statement.(Method of javax.persistence.Query)

 
api-jpa

getSingleResult()

Execute a SELECT query that returns a single result.(Method of javax.persistence.TypedQuery)

 
forum_thread

how to query by properties of onetomany relations? (Error 990)

the following code fails em.createQuery("select f from Foo f where f.bars.name = ?1", Foo.class).setParameter(1, barName) stacktrace: ... ? 1 More details are provided on the FROM page of the ObjectDB manual. ObjectDB Support ... is provided on the Query Setting and Tuning page. ObjectDB Support ObjectDB - Fast Object ...

 
api-jpa

javax.persistence.OneToMany

Defines a many-valued association with one-to-many multiplicity.(Annotation of JPA)

 
api-jpa

javax.persistence.TemporalType

Type used to indicate a specific mapping of java.util.Date or java.util.Calendar.(Enum of JPA)

 
api-jpa

multiselect(selections)

Specify the selection items that are to be returned in the query result.(Method of javax.persistence.criteria.CriteriaQuery)