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Relationships and tracking changes

ObjectDB ignores ORM annotations such as @Column and JoinColumn. Therefore, Java field names

On initialisation of lists: impact on migration from EclipseLink to ObjectDB

I would like to draw the attention of those assessing migration from EclipseLink ORM to ObjectDB to a significant difference in the initialization of persistent lists, namely that EclipseLink injects a List implementation into the List field to be initialise it during EntityManager.persist(). So in


specified at org.springframework.orm.jpa.persistenceunit.SpringPersistenceUnitInfo.addTransformer

Master database switching to read-only mode, possibly caused by slave failure

) at java.lang.reflect.Method.invoke(Method.java:616) at org.springframework.orm.jpa

ObjectDB and Hibernate in one JVM?

Hi all, I need to persist my application data and also access a legacy RDBMS system in the same Java application. Currently I use Hibernate for both purposes. I've heard ObjectDB is much faster than Hibernate, so I want to try the it to deal with my application data, but I still need some ORM

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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