Java Tutorial/EJB3/Persistence
Inject Persistence Context And Link With Persistence Config
File: EmployeeBean.java
<source lang="java">
import javax.ejb.Stateless; import javax.persistence.EntityManager; import javax.persistence.PersistenceContext; @Stateless public class EmployeeBean implements EmployeeServiceLocal, EmployeeServiceRemote {
@PersistenceContext(unitName="EmployeeService") private EntityManager manager; public void doAction(){ Customer cust = new Customer(); cust.setFirstName("Joe"); manager.persist(cust); System.out.println("Saved"); }
}</source>
Persistence Context Type: EXTENDED
File: Customer.java
<source lang="java">
import javax.persistence.Entity; import javax.persistence.EntityListeners; import javax.persistence.Id; import javax.persistence.PostRemove; @Entity public class Customer implements java.io.Serializable {
private String firstName; private String lastName; @Id private long ssn; public String getFirstName() { return firstName; } public void setFirstName(String firstName) { this.firstName = firstName; }
public String getLastName() { return lastName; } public void setLastName(String lastName) { this.lastName = lastName; }
public long getSsn() { return ssn; } public void setSsn(long ssn) { this.ssn = ssn; }
}</source>