About persistence xml

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Manual
239

JPA Persistence Unit

is optional when using ObjectDB, but required by JPA. persistence.xml Persistence units are defined in a persistence.xml file, which has to be located in the META-INF directory in the classpath. One persistence.xml file can include definitions for one or more persistence units. The portable way
Tutorial
196

Step 2: Entity Class and Persistence Unit

the [Provider and Database] step just click Finish to generate a default persistence.xml file ... + ")"; } } A default JPA persistence unit (with default settings) was generated in a persistence.xml file that was added to the project (under Configuration Files). Open the persistence.xml file in
Tutorial
196

Step 2: Entity Class and Persistence Unit

the [Provider and Database] step click Finish to generate a default persistence.xml file ... + ")"; } } A default JPA persistence unit (with default settings) was generated in a persistence.xml file ... the persistence.xml file in a text editor (by right clicking and selecting Edit or by double click
Tutorial
194

Step 2: Entity Class and Persistence Unit

/persistence.xml file: Open the [New Folder] dialog box, e.g. by right clicking the project node (in ... > File, enter persistence.xml as file name and click Finish. Verify that a new persistence.xml file ... to the persistence.xml file: xml version="1.0" encoding="UTF-8"?> <persistence version="2.0" xmlns="http
Tutorial
194

Step 2: Entity Class and Persistence Unit

guests in the database. We also need to configure JPA by setting a META-INF/persistence.xml file ... the new META-INF folder in the [Project Explorer] window, select New > File, enter persistence.xml as file name and click Finish. Verify that a new persistence.xml file was created as shown below: Finally
Tutorial
129

Step 6: Set the Spring XML

of the Spring dispatcher servlet to the web.xml configuration file and to configure that servlet using another xml configuration file. Open the web.xml file (under Web Pages > WEB-INF) in a text editor (by right clicking and selecting Edit or by double click and then moving to the XML tab in the editor window
Tutorial
128

Step 6: Set the Spring XML

of the Spring dispatcher servlet to the web.xml configuration file and to configure that servlet using another xml configuration file. Open the web.xml file (under src/main/webapp/WEB-INF) in a text editor (by ... tab in the editor window). Use copy and paste to replace the default content of the web.xml file
Manual
78

Storing JPA Entity Objects

setting the ObjectDB configuration or in a JPA portable way, by specifying the cascade-persist XML element in the XML mapping file:
Tutorial
58

Step 1: Create a Maven Web Project

to create the project. The configuration of the new created project is contained in a pom.xml file ... all the required JAR files from Maven repositories - open the pom.xml file and in the pom.xml tab use ... >    2.8.1      org.eclipse.persistence
Manual
58

JPA Persistable Types

The term persistable types refers to data types that can be used in storing data in the database. ObjectDB supports all the JPA persistable types, which are: User defined classes - Entity classes ... can be stored in the database directly. Other persistable types can be embedded in entity classes as fields. In