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JPA Primary Key

query run performance: @Entity public class Event { @EmbeddedId EventId id
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JPA Entity Fields

, such as Hibernate, using property access may have some performance benefits. This is not the case
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Apache License, Version 2.0, January 2004

of, publicly display, publicly perform, sublicense, and distribute the Work and such Derivative
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Step 3: Define a Spring DAO Component

Operations on the database will be performed by an instance of a Data Access Object (DAO) that we will define in this step as a Spring MVC component: Open the [New Java Class] dialog box by right clicking the guest package node (in the [Projects] window under Source Packages) and selecting New
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Step 3: Add a Context Listener Class

The Guest entity objects will be stored in an ObjectDB database, which will be represented by a JPA's EntityManagerFactory instance with a global application scope. We have to register a ServletContextListener to perform initialization and cleanup operations: The database will be opened (or created
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Step 4: Add a Servlet Class

the list of guests: doGet(request, response); } } GuestServlet performs
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Step 4: Add a Servlet Class

(request, response); } } GuestServlet performs the following operations on every http request
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Step 3: Define an EJB Session Bean

Operations on the database will be performed by an instance of a session bean (EJB) class that we will define in this step: Open the [New Java Class] dialog box by right clicking the guest package node (in the [Package Explorer] window) and selecting New > Class. The package name should be guest
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Step 3: Add a Context Listener Class

The Guest entity objects will be stored in an ObjectDB database, which will be represented by a JPA's EntityManagerFactory instance with a global application scope. We have to register a ServletContextListener to perform initialization and cleanup operations: The database will be opened (or created
0

[ODB1] Chapter 3 - Persistent Classes

methods that perform the same accesses but also report to ObjectDB. Tracking changes in persistent

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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