About entities

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Manual
102

Defining a JPA Entity Class

To be able to store Point objects in the database using JPA we need to define an entity class. A JPA entity class is a POJO (Plain Old Java Object) class, i.e. an ordinary Java class that is marked ... to serializable classes, which are marked as having the ability to be serialized. The Point Entity
Manual
101

Updating JPA Entity Objects

Modifying existing entity objects that are stored in the database is based on transparent ... Once an entity object is retrieved from the database (no matter which way) it can simply be modified in memory ... (); The entity object is physically updated in the database when the transaction is committed
Manual
100

Entity Management Settings

The <entities> configuration element specifies front end settings that are relevant on the client side and in embedded mode. The default configuration file contains the following <entities> element: <entities>
Tutorial
97

Step 2: Entity Class and Persistence Unit

To store objects in an ObjectDB database using JPA we need to define an entity class: Open the [New Entity Class] dialog box, e.g. by right clicking the project node (in the [Projects] window) and selecting New > Entity Class... (or New > Other... > Persistence > Entity Class and clicking
Tutorial
97

Step 2: Entity Class and Persistence Unit

To store objects in an ObjectDB database using JPA we need to define an entity class: Open the [New Entity Class] dialog box, e.g. by right clicking the project node (in the [Projects] window) and selecting New > Entity Class... (or New > Other... > Persistence > Entity Class and clicking
Tutorial
95

Step 2: Entity Class and Persistence Unit

To store objects in an ObjectDB database using JPA we need to define an entity class: Right click ... - use exactly that case sensitive class name. Click Finish to create the new entity class. A new class ... .persistence.Entity; import javax.persistence.GeneratedValue; import javax.persistence.Id; @Entity
Tutorial
94

Step 2: Define a JPA Entity Class

To store objects in an ObjectDB database using JPA we need to define an entity class: Open the [New ... .Serializable; import javax.persistence.*; @Entity public class Point implements Serializable ... . Besides the @Entity annotation and the id field (and its annotations) - the Point class
Tutorial
94

Step 2: Define a JPA Entity Class

To store objects in an ObjectDB database using JPA we need to define an entity class: Open the [New ... .Entity; import javax.persistence.GeneratedValue; import javax.persistence.Id; @Entity public ... in the database. Besides the @Entity annotation and the id field (and its annotations) - the Guest
Tutorial
94

Step 2: Entity Class and Persistence Unit

To store objects in an ObjectDB database using JPA we need to define an entity class: Open the [New ... .Date; import javax.persistence.Entity; import javax.persistence.GeneratedValue; import javax.persistence.Id; @Entity public class Guest implements Serializable { private static final long
Tutorial
93

Step 2: Define a JPA Entity Class

To store objects in an ObjectDB database using JPA we need to define an entity class: Open the [New ... .Serializable; import java.sql.Date; import javax.persistence.Entity; import javax.persistence.GeneratedValue; import javax.persistence.Id; @Entity public class Guest implements Serializable