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7

UPDATE SET Queries in JPA/JPQL

. Applying changes to the database by calling the commit method. JPQL UPDATE queries provide ... queries can only be executed within an active transaction and the changes are visible to other users
5

javax.persistence.EntityManager

entities to become detached. Changes made to entities that have not been flushed to the database will not ... the persistence context, causing a managed entity to become detached. Unflushed changes made to the entity ... values that are in effect for the entity manager. Changing the contents of the map does not change
5

SELECT clause (JPQL / Criteria API)

are not associated with an EntityManager and changes to them when a transaction is active are not
5

Apache License, Version 2.0, January 2004

; and You must cause any modified files to carry prominent notices stating that You changed the files
5

Storing JPA Entity Objects

and changes its state to Managed. The new entity object is stored in the database when the transaction
5

Detached Entity Objects

that have been loaded before detachment should be used. Changes to detached entity objects are not stored in
5

Strings in JPQL and Criteria Queries

(when present) specifies from which position to start the search. LOWER and UPPER - Changing String Case
5

JPA Persistable Types

must be fixed, since changing a name can cause data loss in existing databases. The @Enumerated
1

Step 7: Run the Spring Web App

/. This Spring web application can also run with GlassFish 3.0.1, with a small change in
0

javax.jdo.PersistenceManager

it. There is no change made to the state of the returned instance. If there is not an instance already in ... returns it. There is no change made to the state of the returned instance. If there is an instance ... ) of the internal state of the instance, and changing it does not affect the JDO identity of the instance

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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