Fast Object Database for Java - with JPA/JDO support

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Java 9 support

dependencies are allowed without me having to know what is really required by what. You can see that my tool and approach is designed for "just me" to get true Java 9 without having to wait on third parties but at the sacrifice of having everything exposed (which is fine because I am the only one using

Object DB vs EclipseLink/TopLink: Unloaded relationships in detached entities

factory after having detached the entity, the detached entity finds how to load the entities of the lazy ... elements as simple and as few as possible without having to surrender the adequate representation ... , but no simpler.” or “Make things as simple as possible, but not simpler.” webel Dr Darren Kelly Having

How Should I Configure objectdb.conf to Obtain 256KB Disk IO Requests and Maximize Shared PersistenceManager Entity Cache?

above) appropriate to achieve this goal? CBE CBE Having larger database pages may have other effects ... on an Amazon EBS disk which has max performance at that size and reduces monetary fees by having ... performance at that size and reduces monetary fees by having fewer accesses). So a page size of 256K

OEM license, enhancer

with the system which was created before having the OEM license and before adding enhancer to our maven ... is the same and it is not affected by having or not having a license. support Support

find repeated records by JPQL

(select id from TTT s group id having count(id)>1) I dont know how to do this using JPQL, but I use ... #1 contains GROUP BY / HAVING. The outer query in #1 contains the IN operator. The query in #3 ... since in #3 there is no GROUP BY / HAVING. support Support

On ensuring ID available after persist

, which relies on an "external" entity object having a non-null id after it has been passed ... ); // then do something that relies on Java variable e having e.getId() defined (like wiring

Selective merge/cascade of detatched entity

I'm having an issue with my application, and I'm hoping you guys will be able to help. Please forgive typos and obvious errors, I'm having to retype from a non-internet connected network. A contrived example is: @Entity public class Salesman { private String name; @OneToMany(fetch

Dirty checking

classes can't register change listeners? ie: @Embeddable @EntityListeners (Listener.class) So, having to go and make all @Embeddables into @Entities. and, having to manually save each one. Question

PersistenceException: Failed to locate field

your question re the server having access to an old version, shouldn't it automatically flush it's caches ... that was the recommended solution But having to run it twice is fine for me. dmoshal David Moshal

Externalising persistence.xml properties in Glassfish?

without me having to edit manually prior deployment or rely on build scripts ... either with Glassfish/JBoss and having environment specific datastore properties being build independent? I

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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