ObjectDB ObjectDB

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7

Index Definition

. A PersistenceException is thrown on commit (or flush) if different entities have the same value in
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Posting Sample Code

= new MyEntity("test");         em.persist(e);         em.getTransaction().commit
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ObjectDB Object Database Features

transactions. Operations: begin, commit, rollback. Processes and Threads All API classes and interfaces
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Step 3: Define an EJB Session Bean

to wrap every operation that modifies the database (such as persist) by transaction begin and commit
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Step 3: Define a Spring DAO Component

every operation that modifies the database (such as persist) by transaction begin and commit. The next step is adding a Controller Class.
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Step 3: Add a Main Class

); em.persist(p); } em.getTransaction().commit(); // Find the number
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Step 3: Add a Main Class

); } em.getTransaction().commit(); // Find the number of Point objects in
1

Step 3: Define a Spring DAO Component

that modifies the database (such as persist) by transaction begin and commit. The next step is adding a Controller Class.
1

Step 3: Define an EJB Session Bean

transaction begin and commit. The next step is adding a Servlet Class that will serve as the application controller.
0

[ODB1] Chapter 9 - ObjectDB Explorer

(and the equivalent toolbar button) commits the transaction which applies all the changes

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.

Need Help?

  1. Search ObjectDB website
  2. Read the FAQ
  3. Follow the Tutorials
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  5. Search or file an issue
  6. Contact support