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63

Fetch Set from DB only works on debug mode

Fetch Set from DB only works on debug mode
63

Query to find object from element of a contained collection

Query to find object from element of a contained collection
63

Slow loading from db

Slow loading from db
63

2.5.7_03 missing from Maven repository

2.5.7_03 missing from Maven repository
63

Removing an element from an @OneToMany doesn't work

Removing an element from an @OneToMany doesn't work
63

Again about $temp from objectdb.conf

Again about $temp from objectdb.conf
63

How do I Remove an entity from the Database ?

How do I Remove an entity from the Database ?
63

Failure after ObjectDB 2.4.5_07 upgrade from 2.4.4_06

Failure after ObjectDB 2.4.5_07 upgrade from 2.4.4_06
12

Retrieving JPA Entity Objects

The Java Persistence API (JPA) provides various ways to retrieve objects from the database ... with data that is retrieved from the database (or from the L2 cache - if enabled). The new entity object ... is returned as is. Otherwise, the object data is retrieved from the database and a new managed entity
12

SELECT clause (JPQL / Criteria API)

<Country> query = em.createQuery("SELECT c FROM Country c", Country.class); List<Country ... FROM Country AS c Using path expressions, such as c.name, in query results is referred to as projection. The field values are extracted from (or projected out of) entity objects to form the query

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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