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JPA vs JDO - which is more efficient for OneToMany queries?

) is more efficient. But why do you compare JDO (a) with JPA (b). It doesn't matter which API you use. So in ... equivalent. The FAQ discusses which API should be preferred. support Support For JPA, how does

Failed to validate XML

{ url "http://m2.objectdb.com" } } dependencies { compile 'org.slf4j:slf4j-api:+' compile 'javax:javaee-api:+' testCompile 'junit:junit:+' testCompile 'com.objectdb:objectdb

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

Netbeans-Friendly Javadocs

Is there a .jar or URL that I can use to get javadocs that work within Netbeans code prediction popup boxes? I tried attaching the URL: https://www.objectdb.com/api/java/jpa/EntityManager ... Manager or the Library Manager. ThreaT Ashton Hogan You can use the api-javadoc.zip file that is included

JDO support vs JPA

that ? 3. I found there is only API documentation for JDO and no manual at all as there is for JPA. Does ... with JPA and JDO concurrently. The use of API does not affect the database file format. support Support

Threading Problem (maybe with Criteria)

WHERE m_age=50", AdvoluxUID.class); instead of Criteria API CriteriaBuilder cbuilder = manager ... the implementation of the JPA metamodel API. Please try build 2.5.2_02 that will hopefully fix this issue

Internal exception: NPE on criteria query with IN clause and empty collection

already narrowed the cause to the fact that I use JPA criteria query API, and I pass an empty collection to IN ... to see support for static metamodel in ObjectDB implementation of both JPA criteria API and JDO typed queries

Bean Validation (JPA 2.0)

JPA 2 adds support for integration with the Bean Validation API. Constraints that are defined for entity and embeddable classes by using annotations can be checked automatically on PrePersist, PreUpdate and PreRemove JPA lifecycle events. Integration with the Validation API is not supported yet by

Integration with Java EE (JPA 1.0)

ObjectDB can be used in both Java EE and Java SE by using application managed EntityManager. Support of container managed EntityManager and integration with the JTA (Java Transaction API) is not implemented yet. support Support Support for Java Transaction API (JTA) and running ObjectDB in Java EE

Multiple MEMBER OF query

. So, if it is a JPQL parsing/conversion problem, can I avoid that using the criteria API query ... the criteria API query? It would not help because criteria queries are actually converted to JPQL

Getting Started

ObjectDB is very easy to use. Follow the Getting Started Tutorial and the Quick Tour manual chapter and in minutes you may be able to write and run first Java programs against ObjectDB.

Prior knowledge or experience in database programming (SQL, JDBC, ORM, JPA, etc.) is not required, but some background in using the Java language is essential.

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