How does hibernate process big data resources?

Bean file packagetk. blank_hibernate.bean; importjava. io. Serializable; importjava. SQL. Blob; publicclassImageimplementsSerializable {***** success; privateIntegerid; privateBlobimage; publicImage

Bean file package tk. blank_hibernate.bean; import java. io. serializable; import java. SQL. blob; public class Image implements Serializable {/*****/private static final long serialVersionUID = 1L; private Integer id; private Blob image; public Image

Bean File

package tk.blank_hibernate.bean;import java.io.Serializable;import java.sql.Blob;public class Image implements Serializable{/** *  */private static final long serialVersionUID = 1L;private Integer id;private Blob image;public Image() {super();// TODO Auto-generated constructor stub}public Image(Integer id, Blob image) {super();this.id = id;this.image = image;}public Integer getId() {return id;}public void setId(Integer id) {this.id = id;}public Blob getImage() {return image;}public void setImage(Blob image) {this.image = image;}@Overridepublic String toString() {return "Image [id=" + id + ", image=" + image + "]";}}

Write the ing File

Basic dao interface for handling all common operations

Package tk. blank_hibernate.dao; import java. io. serializable; import java. util. list; import java. util. set; public interface BaseDao {/*** add data ** @ param entity * @ return */void saveObject (Object entity ); /*** delete data ** @ param entity */void deleteObject (Object entity ); /*** delete data by ID ** @ param clazz * @ param id */void deleteObject (Class clazz, Serializable id ); /***** change data ** @ param entity */void updateObject (Object entity ); /*** query data by ID ** @ param clazz * @ param id * @ return */Object getObject (Class clazz, Serializable id ); /*** query data by ID ** @ param clazz * @ param id * @ return */Object loadObject (Class clazz, Serializable id ); /*** query all data in the data table * @ param clazz * @ return */List getObjectAll (Class clazz);} the image processing interface

package tk.blank_hibernate.dao;public interface ImageDao extends BaseDao {}

Class that implements the processing method

Package tk. blank_hibernate.dao.impl; import java. io. serializable; import java. util. hashSet; import java. util. list; import java. util. set; import org. hibernate. session; import org. hibernate. transaction; import tk. blank_hibernate.bean.Goods; import tk. blank_hibernate.dao.BaseDao; import tk. blank_hibernate.util.BaseHibernateDaoImpl; public class BaseDaoImpl extends BaseHibernateDaoImpl implements BaseDao {@ Overridepublic void saveObject (Object entity) {System. out. println ("start execution of methods in BaseDaoImpl ========================== saveObject "); session session = getSessionObject (); Transaction transaction = session. beginTransaction (); session. save (entity); transaction. commit () ;}@ Overridepublic void deleteObject (Object entity) {System. out. println ("start execution of methods in BaseDaoImpl ========================== deleteObject "); session session = getSessionObject (); Transaction transaction = session. beginTransaction (); session. delete (entity); transaction. commit () ;}@ Overridepublic void deleteObject (Class clazz, Serializable id) {System. out. println ("start execution of methods in BaseDaoImpl ========================== deleteObject "); session session = getSessionObject (); Transaction transaction = session. beginTransaction (); session. delete (getObject (clazz, id); transaction. commit () ;}@ Overridepublic void updateObject (Object entity) {System. out. println ("start execution of methods in BaseDaoImpl ======================== updateObject "); session session = getSessionObject (); Transaction transaction = session. beginTransaction (); session. update (entity); transaction. commit () ;}@ Overridepublic Object getObject (Class clazz, Serializable id) {System. out. println ("start execution of methods in BaseDaoImpl ======================== getObject "); session session = getSessionObject (); Transaction transaction = session. beginTransaction (); Object object = session. get (clazz, id); return object;} @ Overridepublic Object loadObject (Class clazz, Serializable id) {System. out. println ("start execution of methods in BaseDaoImpl ====================== loadObject"); return null ;} @ Overridepublic List getObjectAll (Class clazz) {System. out. println ("start execution of methods in BaseDaoImpl ======================== getObjectAll "); transaction transaction = getSessionObject (). beginTransaction (); List list = getSessionObject (). createQuery ("from" + clazz. getName ()). list (); transaction. commit (); return list ;}}

Class implementation for image processing

package tk.blank_hibernate.dao.impl;import tk.blank_hibernate.dao.ImageDao;public class ImageDaoImpl extends BaseDaoImpl implements ImageDao {}

Interfaces for processing all services that work together

Package tk. blank_hibernate.service; import java. io. serializable; import java. util. list; public interface BaseService {/*** add data ** @ param entity * @ return */void saveObject (Object entity ); /*** delete data ** @ param entity */void deleteObject (Object entity ); /*** delete data by ID ** @ param clazz * @ param id */void deleteObject (Class clazz, Serializable id ); /***** change data ** @ param entity */void updateObject (Object entity ); /*** query data by ID ** @ param clazz * @ param id * @ return */Object getObject (Class clazz, Serializable id ); /*** query data by ID ** @ param clazz * @ param id * @ return */Object loadObject (Class clazz, Serializable id ); /*** query all data in a data table ** @ param clazz * @ return */List getObjectAll (Class clazz );}

Image Processing service Interface

Package tk. blank_hibernate.service; public interface ImageService extends BaseService {} implement services that process all common methods

Package tk. blank_hibernate.service.impl; import java. io. serializable; import java. util. list; import tk. blank_hibernate.dao.BaseDao; import tk. blank_hibernate.dao.impl.BaseDaoImpl; import tk. blank_hibernate.service.BaseService; public class BaseServiceImpl implements BaseService {BaseDao baseDao = new BaseDaoImpl (); @ Overridepublic void saveObject (Object entity) {System. out. println ("Start the BaseServiceImpl execution method ================ saveObject"); baseDao. saveObject (entity) ;}@ Overridepublic void deleteObject (Object entity) {System. out. println ("Start the BaseServiceImpl execution method =============== deleteObject"); baseDao. deleteObject (entity) ;}@ Overridepublic void deleteObject (Class clazz, Serializable id) {System. out. println ("Start the BaseServiceImpl execution method =============== deleteObject"); baseDao. deleteObject (clazz, id) ;}@ Overridepublic void updateObject (Object entity) {System. out. println ("start to execute methods in BaseServiceImpl ============== updateObject"); baseDao. updateObject (entity) ;}@ Overridepublic Object getObject (Class clazz, Serializable id) {System. out. println ("start to execute methods in BaseServiceImpl ============== getObject"); return baseDao. getObject (clazz, id) ;}@ Overridepublic Object loadObject (Class clazz, Serializable id) {System. out. println ("start to execute methods in BaseServiceImpl ============== loadObject"); return baseDao. loadObject (clazz, id) ;}@ Overridepublic List getObjectAll (Class clazz) {System. out. println ("start to execute methods in BaseServiceImpl ============== getObjectAll"); return baseDao. getObjectAll (clazz );}}

Implementation of Image Processing service

package tk.blank_hibernate.service.impl;import tk.blank_hibernate.service.ImageService;public class ImageServiceImpl extends BaseServiceImpl implements ImageService {}

An API that independently generates a session

Package tk. blank_hibernate.util;

Import org. hibernate. Session;

Public interface IHibernateConnection {
Public Session getSessionObject ();
}

Implementation class for separately generated sessions

Package tk. blank_hibernate.util;

Import org. hibernate. Session;

Public class BaseHibernateDaoImpl implements IHibernateConnection {

@ Override
Public Session getSessionObject (){
Return HiberUtil. openSession ();
}

}

Substantive methods for generating sessions

Package tk. blank_hibernate.util; import org. hibernate. session; import org. hibernate. sessionFactory; import org. hibernate. boot. registry. standardServiceRegistryBuilder; import org. hibernate. cfg. configuration; import org. hibernate. service. serviceRegistry; public class HiberUtil {static Configuration cfg; static ServiceRegistry serviceRegistry; static SessionFactory sessionFactory; static {cfg = new Configuration (). configure (); serviceRegistry = new StandardServiceRegistryBuilder (). applySettings (cfg. getProperties ()). build (); sessionFactory = cfg. buildSessionFactory (serviceRegistry);} public static Session openSession () {// return the connection object of the current session return sessionFactory. getCurrentSession ();}}

Hibernate. cfg. xml

 
 
  
   
    
Com. mysql. jdbc. Driver
   
   
    
Jdbc: mysql: // localhost: 3306/hiber_jd
   
   
    
Root
   
   
    
Admin
   
   
   
    
Org. hibernate. dialect. MySQLDialect
   
   
   
    
Thread
   
   
   
    
True
   
   
   
    
False
   
   
   
    
Update
   
   
  
 

Test code

Package tk. blank_hibernate.junit; import java. io. file; import java. io. fileInputStream; import java. io. fileNotFoundException; import java. io. fileOutputStream; import java. io. filterInputStream; import java. io. IOException; import java. io. inputStream; import java. SQL. blob; import java. SQL. SQLException; import org. hibernate. hibernate; import org. junit. test; import tk. blank_hibernate.bean.Image; import tk. blank_hiber Nate. service. imageService; import tk. blank_hibernate.service.impl.ImageServiceImpl; import tk. required; public class ImageTest {// create ImageService processing object ImageService imageService = new ImageServiceImpl (); @ Testpublic void save () {// create an img object Image = new image (); // read the File file = new File ("F: \ webprogect \ hibernate_jd \ src \ ni.jpg"); try {// create the input stream of the File, load the file to the stream. New FileInputStream (file); // create a blob Big Data Object |||| get Blob = Hibernate in this way after 4. getLobCreator (HiberUtil. openSession ()). createBlob (FCM, file. length (); // store big data to an image. setImage (blob); imageService. saveObject (image);} catch (FileNotFoundException e) {// TODO Auto-generated catch blocke. printStackTrace () ;}@ Testpublic void getImage () throws SQLException {Image image = (Image) imageService. getObject (Ima Ge. class, 1); // determines whether the obtained data is null if (image! = Null) {InputStream is = image. getImage (). getBinaryStream (); File file = new File ("D: \ a.jpg"); try {FileOutputStream fos = new FileOutputStream (file ); byte buffer [] = new byte [1024]; int len = 0; while (len = is. read (buffer ))! =-1) {fos. write (buffer, 0, len);} fos. close (); is. close ();} catch (FileNotFoundException e) {// TODO Auto-generated catch blocke. printStackTrace ();} catch (IOException e) {// TODO Auto-generated catch blocke. printStackTrace ();}}}}