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Tutorial
28

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 Java Class] dialog box, e.g. by right clicking the project node (in the [Projects] window) and selecting New > Java Class... Enter Guest as the class name - use exactly that case sensitive class name
Tutorial
26

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 Java Class] dialog box, e.g. by right clicking the project node (in the [Package Explorer] window) and selecting New > Class. Enter guest as the package name - use exactly that case sensitive package
Tutorial
26

Step 6: Set the Spring XML

To integrate the Spring Framework into a web application we have to add the definition 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
Manual
25

JPA / JDO Class Enhancer

> ... Complete ObjectDB Maven projects are available for download on the Tutorial pages: Quick Start with JPA JPA Web Application Java EE JPA Spring MVC and JPA Similarly, enhancement ... ="true" classpath="c:\objectdb\bin\objectdb.jar">
Tutorial
24

Step 4: Add a Controller Class

In this step we will add a Spring Controller to manage guestbook web requests: Open the [New Java Class] dialog box by right clicking the guest package node (in the [Projects] window) and selecting ... org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation
Tutorial
21

Step 5: Add a JSP Page

] dialog box by right clicking the WEB-INF node under the Web Pages node (in the [Projects] window ... name. The Folder should be WEB-INF (to prevent accessing the JSP directly not through Spring). Click ... "> JPA Guestbook <B>Web</b> Application Tutorial
Manual
20

SELECT clause (JPQL / Criteria API)

- JPQL does not support the "SELECT *" expression (which is commonly used in SQL). Projection of Path ... projection. The field values are extracted from (or projected out of) entity objects to form the query ... that uses projection when a result path expression resolves to an entity. For example, the following
Result
19

ObjectDB License

for small projects, academic assignments, evaluation and learning. ObjectDB is a commercial software ... and laptops of employees in that workplace. Servers that are leased or rented from third party web hosting and/or cloud hosting companies (including shared web hosting and VPS), if the hosted applications
Tutorial
19

Step 5: Add a JSP Page

] dialog box by right clicking the Web Pages node (in the [Projects] window) and selecting New > JSP ... .w3.org/TR/html4/loose.dtd"> JPA Guest Book Web Application ... ). The next step (and the last in this tutorial) is running the web application.
Tutorial
18

Step 3: Add a Context Listener Class

if not exists yet) when the web application starts, by instantiating an EntityManagerFactory. The database will be closed when the web application stops (or when the web server shuts down), by ... > Other... > Web > Listener and clicking Next. The Java package name should be guest. Enter GuestListener