About persistence unit

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Tutorial
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Step 2: Define a JPA Entity Class

.Serializable; import javax.persistence.*; @Entity public class Point implements Serializable ... is an ordinary Java class. The warning that NetBeans displays on the Guest class indicates that a persistence unit definition in an XML file is missing. This is discussed in the ObjectDB Manual
Manual
16

CRUD Operations with JPA

Explains how to use JPA for CRUD database operations (persist, retrieve, update, remove).
FAQ
16

Where can I learn how to use ObjectDB?

All about Where can I learn how to use ObjectDB? in Java/JPA database - explanations, examples, references, links and related information.
JPA Doc
16

Persistence()

Constructor javax.persistence.Persistence Persistence() Since: JPA 1.0
JPA Doc
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Persistence.PERSISTENCE_PROVIDER

Static Field javax.persistence.Persistence String PERSISTENCE_PROVIDER Deprecated. This final String is deprecated and should be removed and is only here for TCK backward compatibility Since: JPA 1.0
JDO Doc
15

javax.jdo.JDOEntityManager

() Return an instance of Metamodel interface for access to the metamodel of the persistence unit. Return an instance of Metamodel interface for access to the metamodel of the persistence unit. Returns ... of interest. If the classes parameter is specified as null, events for all persistent classes and interfaces
Manual
14

Strings in JPQL and Criteria Queries

to persistent string fields. as results of predefined JPQL string manipulation functions. LIKE - String ... the argument string as an int. For example: LENGTH('United States') is evaluated to 13. LENGTH
JDO Doc
14

javax.jdo.Constants

. Since: JDO 2.1 String PMF_ATTRIBUTE_PERSISTENCE_UNIT_NAME The name of the persistence manager factory element's "persistence-unit-name" attribute. The name of the persistence manager factory element's "persistence-unit-name" attribute. Since: JDO 2.1 String PMF_ATTRIBUTE_READONLY The name
Forum
13

Externalising persistence.xml properties in Glassfish?

modules (hence, many persistence-units). I realise that it can be a limitation stemming from JPA ... <persistence-unit name="invoicingTxUnit" transaction-type="JTA"> x.y.z ... --> persistence-unit> So, anyone encounter any tutorials for handling
Forum
12

JBOSS AS7 7.1.1 - Entity not persisted and createNamedQuery fire exception

_2_0.xsd"> <persistence-unit name="guest-pu" transaction-type="JTA">      ObjectDB Persistence Unit       com.objectdb.jpa.Provider