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... solution for Java, based on the Java Persistence API (JPA) and the Java Data Objects (JDO) standards, since ObjectDB is the ...

 
forum_thread

ObjectDB and JPA

Hello !! I am new in JPA / ObjectDB development and I have many questions:   ... this list ). Hibernate supports JPA + its own old API + extensions. ObjectDB supports also JDO. But in the JPA context Hibernate ...

 
forum_thread

Future JDO versions?

We are about to release our first product using ObjectDB (as a small embedded store), and soon hope to release a much larger product using ObjectDB (will need an OEM license).  What really interests us is JDO.  We have been using JDO for over a decade and have found it consistently a far better API than JPA, as all kinds of features that are optional or require special extensions in JPA products, (such as large query optimisation, storage of collections of non-entities and automated management of identity) are built-in to JDO.... over a decade and have found it consistently a far better API than JPA, as all kinds of features that are optional or require special ...

 
forum_thread

Analyse opensource project

Hello , it will be good if you analyse open source project : OrientDB: https://github.com/nuvolabase/orientdb     i heard it new. Maybe it can be helpful for more faster objectdb or jdbc side. ... support to objectdb.   There is an api named : CacheWriter for that.   ...

 
api-jpa

getLockMode()

Get the current lock mode for the query.(Method of javax.persistence.Query)

 
forum_thread

Using Scala collections with ObjectDB

Hi, I cannot see that it is possible to make scala collection classes persistable within ObjectDB. Am I missing something or must  ObjectDB Software Ltd do a specific incorporation of the scala.collection._  api for it to work ? (http://www.scala-lang.org/docu/files/collections-api/collections.html)   /Peter   ... incorporation of the scala.collection._  api for it to work ? (http://www.scala-lang.org/docu/files/collections-api/collections.html)   /Peter   ...

 
forum_thread

JSON serialization and __odbHidden members

Hi.. Building a REST API (Jersey-based one) I noticed that object object I serialize to JSON has a clone field with "__odbHidden" suffix, e.g.there's  "id" and "id__odbHidden" is also (unwantenly) present with the same value. In general, we can annotate fields to include/exclude them from JSON serialization, but since these fields are not declared in my classes, I have no idea how to tell marshaller to avoid them. ... Hi.. Building a REST API (Jersey-based one) I noticed that every object I serialize to JSON has a ...

 
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.LockTimeoutException

Thrown by the persistence provider when an pessimistic locking conflict occurs that does not result in transaction rollback.(Exception of JPA)

 
faq

Is ObjectDB better than Object Relational Mapping (ORM)?

... relational database). By using the Java Persistence API (JPA), you can develop portable applications that can use both ObjectDB and ...