About injection

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Forum
32

TemporalType injection with Calendar using JPA

TemporalType injection with Calendar using JPA
Tutorial
26

Step 3: Define a Spring DAO Component

.transaction.annotation.Transactional; @Component public class GuestDao { // Injected database ... the instantiation of the DAO component class and injects an instance of the DAO component class into the controller, as shown in the next step. Prepares an EntityManager automatically and injects it into the em
Tutorial
26

Step 3: Define an EJB Session Bean

; @Stateless public class GuestDao { // Injected database connection ... : Manages the instantiation of the EJB class and injects an instance of the EJB class into the servlet (as shown in the next step). Prepares an EntityManager automatically and injects it into the em field
Tutorial
26

Step 3: Define a Spring DAO Component

.annotation.Transactional; @Component public class GuestDao { // Injected database connection ... component class and injects an instance of the DAO component class into the controller, as shown in the next step. Prepares an EntityManager automatically and injects it into the em field
Tutorial
26

Step 3: Define an EJB Session Bean

class GuestDao { // Injected database connection: @PersistenceContext private EntityManager ... of the EJB class and injects an instance of the EJB class into the servlet (as shown in the next step). Prepares an EntityManager automatically and injects it into the em field (because it is annotated
Tutorial
22

Step 4: Add a Servlet Class

; // Injected DAO EJB: @EJB GuestDao guestDao; @Override protected void doGet ... session bean, which is instantiated and injected by the application server into the guestDao field
Tutorial
22

Step 4: Add a Servlet Class

final long serialVersionUID = 1L; // Injected DAO EJB: @EJB GuestDao guestDao ... on the database are carried on by the GuestDao session bean, which is instantiated and injected by
Result
15

ObjectDB Object Database Features

Automatic object versioning (can be injected to a @Version field). Optimistic locking (always active
Tutorial
15

Step 4: Add a Controller Class

is automatically constructed and injected by Spring into the guestDao field (because it is annotated
Manual
15

JPA Primary Key

is defined the primary key value is automatically injected into that field by ObjectDB