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Manual
9

Logical Operators in JPQL and Criteria API

only Predicate instances as arguments. NOT Expression There are two ways to create a NOT operator ... creates a Predicate by negation of a specified boolean expression. Alternatively, to create a negation
Tutorial
9

Step 2: Entity Class and Persistence Unit

to create the new class. A new class that should represent Guest objects in the database was created in ... was created as shown below: Finally, use copy and paste to copy the following content
Tutorial
9

Step 2: Entity Class and Persistence Unit

- use exactly that case sensitive class name. Click Finish to create the new entity class. A new class that should represent Guest objects in the database was created in the project (under Java Resources ... file name and click Finish. Verify that a new persistence.xml file was created as shown below: Finally
Tutorial
9

Step 3: Add a Context Listener Class

a ServletContextListener to perform initialization and cleanup operations: The database will be opened (or created ... All to enable the Finish button. Click Finish to create the new listener class. Now replace the content ... above: Invokes the Enhancer to enhance the entity class and creates an EntityManagerFactory instance and stores
Tutorial
9

Step 3: Add a Context Listener Class

a ServletContextListener to perform initialization and cleanup operations: The database will be opened (or created ... that case sensitive class name. The Java package name should be guest. Click Finish to create ... and creates an EntityManagerFactory instance and stores it as an application scope attribute in the servlet
Tutorial
9

Step 3: Add a Main Class

name. Click Finish to create the new class. Use copy and paste to fill the new source file ... // (create a new database if it doesn't exist yet): EntityManagerFactory emf ... connection: em.close(); emf.close(); } } The main method creates an ObjectDB
JPA Doc
9

javax.persistence.criteria.Subquery

: new expression of the given type Since: JPA 2.0 Root correlate( Root parentRoot) Create a subquery root correlated to a root of the enclosing query. Create a subquery root correlated to a root ... root Since: JPA 2.0 Join correlate( Join parentJoin) Create a subquery join object
Manual
7

BIRT/ODA ObjectDB Driver

when using client-server mode. ObjectDB/JPA Data Source To create an ObjectDB data source: Open the [New ... Sets and JPQL To create the data set: Open the [New Data Set] dialog box by right clicking the Data
Manual
7

Chapter 1 - Quick Tour

This chapter demonstrates basic ObjectDB and JPA concepts by introducing a simple example program. After reading this chapter you should be able to write basic programs that create, open and close ObjectDB databases and perform basic CRUD operations (Create/Store, Retrieve, Update and Delete
Manual
7

Comparison in JPQL and Criteria API

for building these expressions, as shown in the following examples: // Create String path ... = cb.parameter(String.class); // Create Integer path and parameter expressions: Expression