About JPA

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Manual
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Deleting JPA Entity Objects

object references, if any). Orphan Removal JPA 2 supports an additional and more aggressive remove ... when many entity objects have to be deleted in one operation. The DELETE Queries in JPA/JPQL in chapter 4 explains how to use JPA DELETE queries.
Tutorial
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Eclipse/JPA Java EE 6 Tutorial

This is the Eclipse version of the Java EE JPA tutorial. It demonstrates how to create and run ... and JPA. The demo web application manages a basic guestbook page. Every visitor can sign the guestbook ... : Persistence is managed by JPA. Every visitor that has signed the guestbook is represented by a Guest entity
Tutorial
40

Eclipse/JPA Web Application Tutorial

This is the Eclipse version of the JPA Web App tutorial. It demonstrates how to create and run a database driven Java web application in Eclipse - using Tomcat 6, ObjectDB and JPA. The demo web ... . The visitors that have already signed are listed below the form: Persistence is managed by JPA
Manual
40

JPA Primary Key

required. But ObjectDB also supports explicit standard JPA primary keys, including composite primary ... ; : } When an entity has multiple primary key fields, JPA requires defining a special ID class ... values. Obtaining the Primary Key JPA 2 provides a generic method for getting the object ID (primary key
Tutorial
40

NetBeans/JPA Java EE 6 Tutorial

This is the NetBeans version of the Java EE JPA tutorial. It demonstrates how to create and run ... and JPA. The demo web application manages a basic guestbook page. Every visitor can sign the guestbook ... : Persistence is managed by JPA. Every visitor that has signed the guestbook is represented by a Guest entity
Tutorial
40

NetBeans/JPA Web Application Tutorial

This is the NetBeans version of the JPA Web App tutorial. It demonstrates how to create and run ... modifications are needed for Tomcat 7.0), ObjectDB and JPA. The demo web application manages a basic ... that have already signed are listed below the form: Persistence is managed by JPA. Every visitor
Tutorial
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Spring MVC JPA Tutorial - Maven Project

The Spring MVC JPA tutorial provides step by step instructions on how to build a simple Java/JPA Spring MVC database driven web application in Eclipse or NetBeans. Building a new application step by ... application as a Maven project: Spring MVC JPA - Maven Project (7KB) If Maven is installed - extract the zip
Manual
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Obtaining a JPA Database Connection

In JPA a database connection is represented by the EntityManager interface. Therefore, in order ... to get an EntityManager instance. JPA requires the definition of a persistence unit in an XML file in order ... (); The EntityManager instance represents a connection to the database. When using JPA
Tutorial
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Getting Started with JPA - Eclipse Project

To open and run the Quick Start with JPA tutorial project in Eclipse: Download and extract the project zip file: Getting Started with JPA - Maven Project (3KB) Open the Maven project in Eclipse: Select File > Import... > Maven > Existing Maven Projects and click Next. Select the points-console
Tutorial
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Getting Started with JPA - IntelliJ Project

To open and run the Quick Start with JPA tutorial project in IntelliJ IDEA: Download and extract the project zip file: Getting Started with JPA - Maven Project (3KB) Open the project in IntelliJ IDEA: Select File > Open Project.... Select the points-console directory and click Open Project. Run