6 | JPA Persistence Unit are available only when the containing classes become known to ObjectDB, for example when a first instance of the class is stored in the database. |
6 | JPA Metamodel API are already stored in the database. Three additional methods can be used to retrieve a specific type by its Class |
1 | Step 2: Entity Class and Persistence UnitTo 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 |
1 | Getting Started with JPA and EclipseThis is the Eclipse version of the Quick Start with JPA tutorial. It demonstrates how to create and run a simple JPA application in Eclipse. The demonstrated application uses JPA to store and retrieve simple Point entity objects, where each Point has two persistent fields: x and y |
1 | Step 2: Define a JPA Entity ClassTo 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 |
1 | NetBeans/JPA Spring MVC Web Tutorial is represented by a Guest JPA entity object and all the Guest entity objects are stored in an ObjectDB |
1 | NetBeans/JPA Web Application Tutorial that has signed the guestbook is represented by a Guest entity object and all the Guest entity objects are stored |
1 | Step 4: Add a Controller Class Guest entity object is constructed and stored in the database. Processing is forwarded to a JSP page |
1 | Step 2: Entity Class and Persistence UnitTo 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 |
0 | [ODB1] Chapter 1 - About ObjectDB is Very Fast ObjectDB has very good performance. It can store and retrieve thousands of objects |
