JPABookDAOImpl (Student Root 5.1.0-SNAPSHOT API)

java.lang.Object
- ejava.examples.daoex.dao.JPABookDAOImpl

All Implemented Interfaces:

BookDAO
```
public class JPABookDAOImpl
extends Object
implements BookDAO
```
This class provides a simple DAO implementation based on JPA

Field Summary

Fields
Modifier and Type Field Description

private EntityManager em

Constructor Summary

Constructors
Constructor Description

JPABookDAOImpl()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`Book`	`create(Book book)`	Add the book to the database.
`List<Book>`	`findAll(int offset, int limit)`	Returns a collection of books, starting at the index provided and limiting the collection to the count value.
`Book`	`get(long id)`	Gets a book from the database by its ID.
`void`	`remove(Book book)`	Removes a book from the database.
`void`	`setEntityManager(EntityManager em)`
`Book`	`update(Book book)`	Updates the book in the database with the values in this object.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - em
```
private EntityManager em
```
- Constructor Detail
  - JPABookDAOImpl
```
public JPABookDAOImpl()
```
- Method Detail
  - setEntityManager
```
public void setEntityManager(EntityManager em)
```
  - create
```
public Book create(Book book)
```
    Description copied from interface: BookDAO
    
    Add the book to the database.
    
    Specified by:
    
    create in interface BookDAO
  - update
```
public Book update(Book book)
```
    Description copied from interface: BookDAO
    
    Updates the book in the database with the values in this object.
    
    Specified by:
    
    update in interface BookDAO
  - get
```
public Book get(long id)
```
    Description copied from interface: BookDAO
    
    Gets a book from the database by its ID.
    
    Specified by:
    
    get in interface BookDAO
  - remove
```
public void remove(Book book)
```
    Description copied from interface: BookDAO
    
    Removes a book from the database.
    
    Specified by:
    
    remove in interface BookDAO
  - findAll
```
public List<Book> findAll(int offset,
                          int limit)
```
    Description copied from interface: BookDAO
    
    Returns a collection of books, starting at the index provided and limiting the collection to the count value.
    
    Specified by:
    
    findAll in interface BookDAO