README.md

#Spring Dao Libray for easy using JPA

SD4J is a easy way to using JPA in spring framework.

maven

<dependency>
    <groupId>com.github.kentyeh</groupId>
    <artifactId>sd4j</artifactId>
    <version>1.0.1</version>
</dependency>

or download from maven site

Configure

XML Configure

<!-- processing @Dao and @DaoManager-->
<bean class="springdao.DaoAnnotationBeanPostProcessor"/>

or

JAVA Configure

@Configuration
public class ApplicationContext{
    @Bean
    public DaoAnnotationBeanPostProcessor daoAnnotationBeanPostProce() {
        return new DaoAnnotationBeanPostProcessor();
    }
}

Examples

ex.1 Inject direct.

public String App(){
    // Where Phone is a jpa entity
    @DaoManager(Phone.class)
    private RepositoryManager<Phone> phoneManager;
    public List<Phone> findOrphanPhones(){
        return phoneManager.findByCriteria(JpqlHelper.get().where("owner").isNull().ql());
    }
}

ex2. Custom business manager

@Transactional(readOnly = true)
public class CustomManager<E> extends RepositoryManager<E>{
    @Transactional(propagation = Propagation.REQUIRED, rollbackFor = Exception.class)
    public void busiMethod(...){
       ....bla bla
    }
}

public String App(){
  @DaoManager
  private CustomManager<Phone> phoneManager;
  public void doSomething(){
     phoneManager.busiMethod();
     ... bla bla
  }
}

Other example look TestDao4j.java.

Tips

Spring web mvc help type conversion.

for example: convert primitive String or int to jpa entity.

import springdao.DaoManager;
import springdao.RepositoryManager;
import springdao.support.DaoPropertyEditor;

@Controller
public class WebController {
  @DaoManager
    private RepositoryManager<Member> memberManager;
  @InitBinder
  public void initBinder(WebDataBinder binder) {
    binder.registerCustomEditor(Member.class, new DaoPropertyEditor(memberManager));
  }
  @RequestMapping("/admin/user/{account}")
  public String userinfo(@PathVariable Member account, HttpServletRequest request) {
    account....;
  }
}

When I access http://localhost/admin/user/kent , It will convert account name: "kent" to Member Object.