Fast Object Database for Java - with JPA/JDO support

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20

CRUD Operations with JPA

Explains how to use JPA for CRUD database operations (persist, retrieve, update, remove).
20

Deleting JPA Entity Objects

Explains how to use JPA to delete (remove) entity objects from the database.
20

Updating JPA Entity Objects

Explains how to use JPA to delete (remove) entity objects from the database.
20

Storing JPA Entity Objects

Explains how to use JPA to store (persist) entity objects in the database.
20

Chapter 3 - Using JPA

Explains how to store, retrieve, update and delete entity objects using JPA.
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JPA Reference (JavaDoc)

Java/JPA API Reference (based on the JPA 3 JavaDoc)
14

javax.persistence.EntityManager

- if the entity state cannot be accessed Since: JPA 1.0 EntityTransaction getTransaction() Return the resource-level EntityTransaction object. Return the resource-level EntityTransaction object. The EntityTransaction instance may be used serially to begin and commit multiple transactions. Returns
14

javax.jdo.JDOEntityManager

to the UTC Date as seen by the server Since: JDO 2.1 EntityTransaction getTransaction() Return the resource-level EntityTransaction object. Return the resource-level EntityTransaction object. The EntityTransaction instance may be used serially to begin and commit multiple transactions. Returns
13

getTransaction()

Method javax.persistence.EntityManager EntityTransaction getTransaction() Return the resource-level EntityTransaction object. The EntityTransaction instance may be used serially to begin and commit multiple transactions. Returns: EntityTransaction instance Throws: IllegalStateException - if invoked on a JTA entity manager Since: JPA 1.0
9

javax.persistence.RollbackException

: Serializable Thrown by the persistence provider when EntityTransaction.commit() fails. Since: JPA 1.0 See Also: javax.persistence.EntityTransaction.commit() RollbackException() Constructs a new

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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