About projection

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Tutorial
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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 tutorial package node (in the [Projects] window) and selecting New > Java Class... Enter Point as the class name - use exactly that case sensitive
Result
7

Posting to ObjectDB Website - Important Instructions

should have a no-arg public or protected constructor, An entity class must be a top level class, The project does not
Tutorial
7

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
Manual
7

Index Definition

scan can be performed. ObjectDB also uses indexes for sorting results and for projection: SELECT
Tutorial
7

Step 5: Add a JSP Page

In this step we will add the JSP that generates the guestbook page output: Open the [New JSP File] dialog box by right clicking the Web Pages node (in the [Projects] window) and selecting New > JSP... Enter guest as the jsp file name - use exactly that case sensitive class name. Click Finish
Tutorial
7

Step 4: Add a Servlet Class

In this step we will add a servlet to manage guestbook web requests: Open the [New Servlet] dialog box by right clicking the guest package node (in the [Projects] window) and selecting New > Servlet... Enter GuestServlet as the class name - use exactly that case sensitive class name. The Java
Result
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How to upgrade from ObjectDB 1.0?

). Refresh your IDE cache. Rebuild your project using the new jar file and enhance your classes using
Tutorial
7

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 New > Java Class... Enter GuestController as the class name - use exactly that case sensitive class
Tutorial
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Step 6: Run the Web Application

You can run the application now by right clicking the GuestServlet node (in the [Project Explorer] window) and selecting Run As > Run on Server > Finish: Since we are using ObjectDB in embedded mode - the database file is created under the Tomcat directory. You can stop the Tomcat server and open
Tutorial
7

Step 4: Add a Servlet Class

In this step we will add a servlet to manage guestbook web requests: Open the [New Servlet] dialog box by right clicking the guest package node (in the [Projects] window) and selecting New > Servlet... Enter GuestServlet as the class name - use exactly that case sensitive class name. The Java