Hibernate Introduction

http://candidjava.com/hibernate-tutorial

Hibernate IntroductionHibernate was introduced by Gavin king in 2001.

Hibernate is used to simplify work in data base.

Hibernate is an Library in Java, used for an Object Relational Mapping (ORM).

Hibernate mainly used for mapping tables in data base and simplify relation between data bases.

It’s an open source.

Advantages:

It supports 12 data bases.

It generates queries automatically according to data base driver what we used.

Eh cache:

2nd level cache – It retrieve data’s from data base and store it in some temporary file and process queries from that

file instead of data base.

It saves time because of small data’s in temporary files.

Hibernate can be integrated in java and j2EE (Servlet,Struts).

XML:

xml file is an intermediate for java and data base.

Mapping java class and database is process through xml.

Xml file map the java class variables (java data types) to data base table attributes (sql data types).

Persistence (POJO):

Persistence – storage.

Hibernate provides temporary storage for pojo class.

Plain Old Java Object – This is the persistence class in hibernate.

This class contains getter, setter method for attributes used in data base tables.

It should contain a no-argument constructor.

The variables used in this class are map with the attributes used in table through xml.

HQL:

HQL is an object oriented language and also platform independent.

Instead of sql queries we use HQL in hibernate, it is easy to understand than sql queries.

http://candidjava.com/hibernate-tutorial

Hibernate Query Language.

Types:

Create Query

Create Criteria

Sql Query

Hibernate configuration(cfg, hbm)

Hibernate.cfg.xml:

<session-factory name=”studentFactory”>

Provides a unique name for property used with this database.

<property name=”connection.driver_class”> oracle.jdbc.OracleDriver </property>

The property connection.driver_class is used for loading database driver just like loading driver in

JDBC(Class.forName();)

<property name=”connection.url”>jdbc:oracle:thin:@localhost:1521:XE </property>

Connection.url property is used to load connection for the paticular database

<property name=”connection.username”>system </property>

This property implies user name of the database.

“system”—This is default user name for oracle.

<property name=”connection.password”>system</property>

This property implies the database password.

system –Replace this with your oracle password.

<property name=”connection.pool_size”>5</property>

Connection.pool_size property is used to maintain connection pooling by application server not by the database

server

<property name=”dialect”>org.hibernate.dialect.OracleDialect </property>

This is an optional property. which generates sql query for database based on the dialect we used. Different database

have different query. Query may be change as the database changes. to over come this problem dialect come in

exist.

<property name=”show_sql”>true</property>

This property displays sql query in console generated by the previous property dialect.

If it is false it doesn’t display the query.

<property name=”hbm2ddl.auto”>update</property>

Update–This Property Used to update the table Rather than create the new table.

If table already exists it update values into table otherwise it creates new table automatically.

Create–This property creates new table.

If the table already exists, it deletes all records in the table and create new table with the given values.

It’s better use update property rather than create to maintain old records.

<mapping resource=”com\\xml\\Student.hbm.xml”/>

Mapping Resource property is used for mapping pojo with table.

Be sure while com\\xml matches your package name else give your package name instead.

Hbm file:

hbm file is created for each pojo class.

It is used as mapping in hibernate.

It’s like an intermediate between hibernate java class and data base table.

All contents in this file are within hibernate mapping tag.

1 <hibernate-mapping>

2

3 -------------------------

4

5 </hibernate-mapping>

<class> tag is used for mapping a java class and table.

1 <class name=”POJOClassName” table=”tableName”>

2 <id name="identifierName" type="DataType" column="ColumnName">

3 <generator class="increment" />

4 </id>

IdentifierName — which should matches the member variable in java (pojo) class.

DataType – Should also matches the data type for the given variable in java class.

ColumnName – It may be any column name for table. It must be a primary key for the given table.

Increment – It’s optional. It automatically increases primary key value for the given table.

<property name=” identifierName ” type=” DataType ” column=” ColumnName ” />

Property tag is created for each identifier in the java class.

POJO Classes in HibernatePlain Old Java Object:

It’s a java class, which have data members and methods.

Data members are map with the table attributes using xml file.

This class contains getter (getXXX) and setter (setXXX) method for attribute to get and set values into tables.

It should contain a no-argument constructor.

Hibernate Simple Program Using Command Prompthttp://candidjava.com/hibernate-simple-program-using-command-prompt

This program explains how to run hibernate in command prompt.

Step 1:

Create a Java File “AddStudent” and paste the below code into that.

AddStudent.java:

• Here we will use sessionFactory for create connetion Oracle database.

sessionFactory = new Configuration().configure(“com\\xml\\hibernate.cfg.xml”).buildSessionFactory();

• Then we will create objects for pojo classes and then save the database using session.

Student stu=new Student();

s.save(stu);

• Then we will use Transaction statement for begin and commit the database.

Transaction tx= s.beginTransaction();

tx.commit();

01 //package code;

02 import java.sql.*;

http://candidjava.com/hibernate-simple-program-using-command-prompt

03 import java.io.*;

04 import org.hibernate.*;

05 import org.hibernate.cfg.*;

06

07 public class AddStudent {

08 private static SessionFactory sessionFactory;

09

10 public static void main(String args[]) throws Exception {

11

12 DataInputStream d = new DataInputStream(System.in);

13 System.out.println("ENTER YOUR NAME");

14 String name = d.readLine();

15 System.out.println("ENTER YOUR DEGREE");

16 String degree = d.readLine();

17 System.out.println("ENTER YOUR PHONE");

18 String phone = d.readLine();

19 System.out.println("Name: " + name);

20 System.out.println("Degree: " + degree);

21 System.out.println("Phone: " + phone);

22 if ((name.equals("") || degree.equals("") || phone.equals(""))) {

23 System.out.println("All informations are Required");

24 } else {

25 try {

26 // begin try

27 sessionFactory = new Configuration().configure()

28 .buildSessionFactory();

29 } catch (Exception e) {

30 System.out.println(e.getMessage());

31 System.err.println("Initial SessionFactory creation failed."

32 + e);

33 }

34 Session s = sessionFactory.openSession();

35 Transaction tx = s.beginTransaction();

36 Student stu = new Student();

37 stu.setName(name);

38 stu.setDegree(degree);

39 stu.setPhone(phone);

40 s.save(stu);

41 tx.commit();

42 System.out.println("Added to Database");

43 if (s != null)

44 s.close();

45 }

46 }

47 }

Step 2:

Create a Java File “Student” paste the below code into that.

Student.java:

• It is a Pojo class. This class Must be a Serializable. Then here we will use get and set method.

1 private long id;

2 public long getId() {return id;}

3 public void setId(long String) {id = String;}

01 //package code;


03

04 public class Student implements Serializable {

05 private long id;

06 private String name;

07 private String degree;

08 private String phone;

09

10 public long getId() {

11 return id;

12 }

13

14 public String getName() {

15 return name;

16 }

17

18 public String getDegree() {

19 return degree;

20 }

21

22 public String getPhone() {

23 return phone;

24 }

25

26 public void setId(long string) {

27 id = string;

28 }

29

30 public void setName(String string) {

31 name = string;

32 }

33

34 public void setDegree(String string) {

35 degree = string;

36 }

37

38 public void setPhone(String string) {

39 phone = string;

40 }

41

42 public String toString() {

43 return name;

44 }

45 }

Step 3:

Create an xml file “hibernate.cfg.xml” place the below code into that.

hibernate.cfg.xml:

<property name=”connection.driver_class”> oracle.jdbc.OracleDriver</property>

Here we will use this property for load the driver in oracle database

<property name=”connection.url”> jdbc:oracle:thin:@localhost:1521:XE</property>

Then this property will use for open connetion inoracle database.

<property name=”connection.username”> system</property>

This property will use for username in oracle database.

<property name=”connection.password”> system</property>

This property will use for password in oracle database

<property name=”dialect”> org.hibernate.dialect.OracleDialect </property>

Here we will use oracle Dialect for generating query.

01 <!DOCTYPE hibernate-configuration PUBLIC

02 "-//Hibernate/Hibernate Configuration DTD//EN"

03 "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">

04 <hibernate-configuration>

05 <session-factory name="studentFactory">

06 <property name="connection.driver_class">

07 oracle.jdbc.OracleDriver

08 </property>

09 <property name="connection.url">

10 jdbc:oracle:thin:@localhost:1521:XE

11 </property>

12 <property name="connection.username">

13 system

14 </property>

http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd

15 <property name="connection.password">

16 system

17 </property>

18 <property name="connection.pool_size">5</property>

19 

20 <property name="dialect">

21 org.hibernate.dialect.OracleDialect

22 </property>

23 

24 <property name="show_sql">false</property>

25 <mapping resource="Student.hbm.xml" />

26 </session-factory>

27 </hibernate-configuration>

Step 4:

Create an xml File “student.hbm.xml” and place below code into that.

Student.hbm.xml:

<class name=”com.candidjava.Student” table=”student” >

This tag will use for mapping Pojo class name and table name.

<id name=”id” type=”long” column =”ID”><generator class=”increment”/></id>

This tag will use for generating primary key id and also increment the id value.

<property name=”name” column=”name” not-null=”true”/>

This property will use for mapping the pojo class veriable name(name=”name” ) and table attribute

name(column=”name”).

</class>”/>

End of the class.

01 <?xml version="1.0"?>

02 <!DOCTYPE hibernate-mapping PUBLIC

03 "-//Hibernate/Hibernate Mapping DTD//EN"

04 "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">

05 <hibernate-mapping >

06 <class name="Student" table="Stutbl" >

07 <id name="id" type="long" column ="ID">

08 <generator class="increment"/>

09 </id>

10 <property name="name" column="name" not-null="true"/>

11 <property name="degree" column="degree" />

12 <property name="phone" column="phone" />

13 </class>


Step 5:

Create a folder “lib” and add library files into that.

Add below Library files into that.

ant-antlr-1.6.3.jar

antlr-2.7.5H3.jar

asm-attrs.jar

asm.jar

cglib-2.1.jar

commons-collections-2.1.1.jar

commons-logging-1.0.4.jar

dom4j-1.6.jar

ehcache-1.1.jar

hibernate.properties

hibernate3.jar

hsqldb.jar

jta.jar

log4j-1.2.9.jar

ojdbc14.jar

http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd

wloracle.jar

wlsqlserver.jar

Step 6:

Create a batch file “a.bat” and place the below code into that.

set classpath=lib\hibernate3.jar;lib\ant-antlr-1.6.3.jar;lib\antlr-2.7.5H3.jar;lib\asm-attrs.jar;lib\hsqldb.jar;lib\jta.jar;lib\

commons-logging-1.0.4.jar;lib\dom4j-1.6.jar;lib\log4j-1.2.9.jar;lib\wlsqlserver.jar;lib\commons-collections-2.1.1.jar;lib\

ehcache-1.1.jar;lib\cglib-2.1.jar;lib\asm.jar;lib\ojdbc14.jar;%classpath%;.;

OUTPUT:

Step 7:

Run the batch file.

http://candidjava.com/wp-content/uploads/2012/02/output15.jpg

Step 8:

Run the Java File.


http://candidjava.com/wp-content/uploads/2012/02/ouput3.jpg

Hibernate Simple Program Using WebApplication with EclipseStep by Step tutorial on running your SimpleProgram Hibernate application with Eclipse IDE

Step – 1 Creating Dynamic web ProjectStep – 2 SimpleProgram Hibernate Project structureStep – 3 Adding Jar FilesStep – 4 Creating your SimpleProgram Hibernate program(Controller & Pojo)Step – 5 Creating hibernate.cfg.xmlStep – 6 Creating Student.hbm.xmlStep – 7 OutPut for Running Console hiberanate applicationStep – 8 OutPut for Running Oracle hibernate application

• This application we will used to insert the data’s in database like sql,oracle,DB2 and etc.

• Here We will see how to save the data’s in oracle database .

Step – 1 Creating Dynamic web Project:

Start Eclipse and goto File -> New -> Project -> Dynamic Web Project

http://candidjava.com/wp-content/uploads/2012/02/clip_image003.jpg

Step – 2 SimpleProgram Hibernate Project structure:

Project Structure:

http://candidjava.com/wp-content/uploads/2012/02/project-Structure3.jpg

Step – 3 Adding Jar Files:

JAR Files:

http://candidjava.com/wp-content/uploads/2012/02/jar-files4.jpg

Step – 4 Creating your SimpleProgram Hibernate program(Controller & Pojo):

AddStudent.java:

01 package com.candidjava;

02


04 public static void main(String[] args) {

05 try {

06 AddStudentControl ctrl = new AddStudentControl();

07 ctrl.addNewStudent(args);



10 }

11 }

12 }

AddStudentControl.java:

Here we will use sessionFactory for create connetion Oracle database.



Student stu=new Student();

s.save(stu);



tx.commit();


02





07

08 public class AddStudentControl {

09


11

12 private Session getSession() {

13 Session s = null;

14 try {

15 sessionFactory = new Configuration().configure(

16 "com\\xmlFiles\\hibernate.cfg.xml").buildSessionFactory();

17 s = sessionFactory.openSession();

18 } catch (HibernateException e) {


20 }

21 return s;

22 }

23

24 public void addNewStudent(String[] args) throws Exception {

25 try {

26 Session s = getSession();



29 DataInputStream ds = new DataInputStream(System.in);

30 System.out.println("*********************\n");

31 System.out.println("Enter the Student Id");

32 String stuid = ds.readLine();

33 System.out.println("Enter the Student RegNo");

34 String sturegno = ds.readLine();

35 System.out.println("Enter the Student name");

36 String stuname = ds.readLine();

37 System.out.println("Enter the Student mark1");

38 String stumark1 = ds.readLine();



41 System.out.println("Enter the Degree");

42 String degree = ds.readLine();

43 System.out.println("Enter the mobile No");

44 String mobileno = ds.readLine();

45 System.out.println("Enter the Student mail Id");

46 String mailid = ds.readLine();

47

48 stu.setStuid(stuid);

49

50 stu.setSturegno(sturegno);

51 stu.setStuname(stuname);

52 stu.setStumark1(stumark1);




56 stu.setMobileno(mobileno);

57 stu.setMailid(mailid);

58 s.save(stu);

59 tx.commit();

60 System.out.println("\n\n Details Added \n");


62 System.out.println("error1" + e.getMessage());

63 System.out.println("error1");

64 }

65

66 }

67

68 }// end of class

Student.java:


1 private long id;

2 public long getId() {return id;}

3 public void setId(long String) {id = String;}


02


04


06 private long id;

07 private String stuid;

08 private String sturegno;

09 private String stuname;

10 private String stumark1;



13 private String mobileno;

14 private String mailid;

15


17 return id;

18 }

19

20 public String getStuid() {

21 return stuid;

22 }

23

24 public String getSturegno() {

25 return sturegno;

26 }

27

28 public String getStuname() {

29 return stuname;

30 }

31

32 public String getStumark1() {

33 return stumark1;

34 }

35


37 return stumark2;

38 }

39


41 return degree;

42 }

43

44 public String getMobileno() {

45 return mobileno;

46 }

47

48 public String getMailid() {

49 return mailid;

50 }

51


53 id = string;

54 }

55

56 public void setStuid(String string) {

57 stuid = string;

58 }

59

60 public void setSturegno(String string) {

61 sturegno = string;

62 }

63

64 public void setStuname(String string) {

65 stuname = string;

66 }

67

68 public void setStumark1(String string) {

69 stumark1 = string;

70 }

71



74 }

75


77 degree = string;

78 }

79

80 public void setMobileno(String string) {

81 mobileno = string;

82 }

83

84 public void setMailid(String string) {

85 mailid = string;

86 }

87

88 }

Step – 5 Creating hibernate.cfg.xml:

hibernate.cfg.xml:


















08 </property>



11 </property>


13 system

14 </property>



16 system

17 </property>





22 </property>



25 <property name="hbm2ddl.auto">update</property>

26 <mapping resource="\com\\xmlFiles\\Student.hbm.xml" />



Step – 6 Creating Student.hbm.xml:

Student.hbm.xml:








</class>”/>

End of the class.






06 <class name="com.candidjava.Student" table="Student2">

07 <id name="id" type="long" column="Id">


09 </id>

10 <property name="stuid" column="StuId" not-null="true" />

11 <property name="sturegno" column="StuRegNO" />

12 <property name="stuname" column="StuName" />

13 <property name="stumark1" column="StuMark1" />


15 <property name="degree" column="Degree" />

16

17 <property name="mobileno" column="MobileNo" />

18 <property name="mailid" column="MailId" />

19 </class>


web.xml:

01 <?xml version="1.0" encoding="UTF-8"?>

02 <web-app id="WebApp_ID" version="2.4"

03 xmlns="http://java.sun.com/xml/ns/j2ee"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

04 xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/

http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd

http://java.sun.com/xml/ns/j2ee

http://www.w3.org/2001/XMLSchema-instance




xml/ns/j2ee/web-app_2_4.xsd">

05 <display-name>HibernateSaveQuery</display-name>

06 <welcome-file-list>

07 <welcome-file>index.html</welcome-file>

08 <welcome-file>index.htm</welcome-file>

09 <welcome-file>index.jsp</welcome-file>

10 <welcome-file>default.html</welcome-file>

11 <welcome-file>default.htm</welcome-file>

12 <welcome-file>default.jsp</welcome-file>

13 </welcome-file-list>

14 </web-app>


OUTPUT:

Step – 7 OutPut for Running Console hiberanate application:

Step – 8 OutPut for Running Oracle hibernate application:


Hibernate Simple Program Using Java Application with EclipseStep by Step tutorial to run your Simple Hibernate Program in Eclipse IDE

Step – 1 Creating Java ProjectStep – 2 SimpleProgram Hibernate Project structureStep – 3 Adding Jar FilesStep – 4 Creating your SimpleProgram Hibernate program(Controller & Pojo)Step – 5 Creating hibernate.cfg.xmlStep – 6 Creating Student.hbm.xmlStep – 7 OutPut for Running Console hiberanate applicationStep – 8 OutPut for Running Oracle hibernate application

• This application we will used to insert the data’s in database like sql,oracle,DB2 and etc.

• Here We will see how to save the data’s in oracle database .


Step – 1 Creating Java Project:

Start Eclipse and goto File -> New -> Project -> Java Project

Step – 2 SimpleProgram Hibernate Project structure:

Project Structure:

http://candidjava.com/wp-content/uploads/2012/02/clip_image001.jpg

http://candidjava.com/wp-content/uploads/2012/02/Project-Structure.jpg

Step – 3 Adding Jar Files:

JAR Files:

http://candidjava.com/wp-content/uploads/2012/02/JarFiles7.jpg

How To Add The JAR Files:

Right click on project and choose properties

Step – 4 Creating your SimpleProgram Hibernate program(Controller & Pojo):

AddStudent.java:

• Here we will use sessionFactory for create connetion Oracle database.



Student stu=new Student(); s.save(stu);


Transaction tx= s.beginTransaction(); tx.commit();


02

03 //package code;

http://candidjava.com/wp-content/uploads/2012/02/How-to-add-the-jar-files.jpg





08



11

12 public static void main(String args[]) throws Exception {

13


15 System.out.println("ENTER YOUR NAME");

16 String name = d.readLine();

17 System.out.println("ENTER YOUR DEGREE");


19 System.out.println("ENTER YOUR PHONE");

20 String phone = d.readLine();

21 System.out.println("Name: " + name);

22 System.out.println("Degree: " + degree);

23 System.out.println("Phone: " + phone);

24 if ((name.equals("") || degree.equals("") || phone.equals(""))) {

25 System.out.println("All informations are Required");

26 } else {

27 try {

28 // begin try


30 "com\\xml\\hibernate.cfg.xml").buildSessionFactory();



33 System.err.println("Initial SessionFactory creation failed."

34 + e);

35 }

36 Session s = sessionFactory.openSession();



39 stu.setName(name);


41 stu.setPhone(phone);

42 s.save(stu);

43 tx.commit();

44 System.out.println("Added to Database");

45 if (s != null)

46 s.close();

47 }

48 }

49 }

Student.java:


o private long id;

o public long getId() {return id;}

o public void setId(long String) {id = String;}


02

03 //package code;


05


07 private long id;



10 private String phone;

11


13 return id;

14 }

15


17 return name;

18 }

19


21 return degree;

22 }

23

24 public String getPhone() {

25 return phone;

26 }

27


29 id = string;

30 }

31

32 public void setName(String string) {

33 name = string;

34 }

35


37 degree = string;

38 }

39

40 public void setPhone(String string) {

41 phone = string;

42 }

43

44 public String toString() {

45 return name;

46 }

47 }

Step – 5 Creating hibernate.cfg.xml:

hibernate.cfg.xml:


















08 </property>



11 </property>



13 system

14 </property>


16 system

17 </property>





22 </property>


24 <property name="show_sql">true</property>

25 <property name="hbm2ddl.auto">create</property>

26 <mapping resource="\com\\xml\\Student.hbm.xml" />



Step – 6 Creating Student.hbm.xml:

Student.hbm.xml:








</class>”/>

End of the class.






06 <class name="com.candidjava.Student" table="Studentdemo">

07 <id name="id" type="long" column="ID">


09 </id>

10 <property name="name" column="name" not-null="true" />

11 <property name="degree" column="degree" />

12 <property name="phone" column="phone" />

13 </class>



OUTPUT:

Step – 7 OutPut for Running Console hiberanate application:

Step – 8 OutPut for Running Oracle hibernate application:


Hibernate Hbm2.ddl.auto create Example Program In Eclipse


Project Structure:

http://candidjava.com/wp-content/uploads/2012/04/ProjectStructure.bmp

JAR Files:

http://candidjava.com/wp-content/uploads/2012/04/JarFiles.bmp

SaveStudent.java:


02

03 public class SaveStudent {


05 try {

06 SaveStudentControl ctrl = new SaveStudentControl();




10 }

11 }

12 }

SaveStudentControl.java:


02


04 import java.util.List;




08

09 public class SaveStudentControl {

10


12



15 try {






21 }

22 return s;

23 }

24


26 try {






















48 stu.setId(3);










58 s.save(stu);

59 // Query q =

60 // s.createQuery("select stu.stuid, avg(stu.stuid) from Student stu group by stu.stuid having avg(stu.stuid) > 10 ");

61 // List li=q.list();

62 // System.out.println(li);

63 // Student ss=new Student();

64 tx.commit();




68 System.out.println("error");

69 }

70

71 }

72

73 }// end of class

Student.java:


02


04


06 private long id;









15


17 return id;

18 }

19


21 return stuid;

22 }

23


25 return sturegno;

26 }

27


29 return stuname;

30 }

31


33 return stumark1;

34 }

35


37 return stumark2;

38 }

39


41 return degree;

42 }

43


45 return mobileno;

46 }

47


49 return mailid;

50 }

51


53 id = string;

54 }

55


57 stuid = string;

58 }

59



62 }

63



66 }

67



70 }

71



74 }

75


77 degree = string;

78 }

79



82 }

83


85 mailid = string;

86 }

87

88 }

hibernate.cfg.xml:









08 </property>



11 </property>


13 system

14 </property>


16 system

17 </property>





22 </property>



25 <property name="hbm2ddl.auto">create</property>

26 <mapping resource="com\\xml\\Student.hbm.xml" />



Student.hbm.xml:






06 <class name="com.candidjava.Student" table="Student">



09 </id>







16



19 </class>


web.xml:

01<?xml version="1.0" encoding="UTF-8"?>

02

<web-app id="WebApp_ID" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http:// java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">

03 <display-name>Create</display-name>

















12 </web-app>

OUTPUT:

http://candidjava.com/wp-content/uploads/2012/04/Output1.bmp

Hbm2ddl.auto Hbm2ddl.auto update Example Program In Eclipse

ProjectStructure:

JarFiles:

http://candidjava.com/wp-content/uploads/2012/03/ProjectStructure31.jpg

SaveStudent.java:


02



05 try {


06 SaveStudentControl ctrl = new SaveStudentControl();07 ctrl.addNewStudent();



10 }

11 }

12 }



02


04 import java.util.List;


06 import org.hibernate.*;07 import org.hibernate.cfg.*;

08


10


12



15 try {

16 sessionFactory = new Configuration().configure(17 "com\\xml\\hibernate.cfg.xml").buildSessionFactory();




21 }

22 return s;

23 }

24

25 public void addNewStudent() throws Exception {

26 try {




30 DataInputStream ds = new DataInputStream(System.in);31 System.out.println("*********************\n");















46 System.out.println("Enter the Student mail Id");47 String mailid = ds.readLine();

48 stu.setId(3);




52 stu.setStumark1(stumark1);53 stu.setStumark2(stumark2);



56 stu.setMobileno(mobileno);57 stu.setMailid(mailid);

58 s.save(stu);

59 // Query q =

60 // s.createQuery("select stu.stuid, avg(stu.stuid) from Student stu group by stu.stuid having avg(stu.stuid) > 10 ");

61 // List li=q.list();

62 // System.out.println(li);63 // Student ss=new Student();

64 tx.commit();





69 }

70

71 }

72

73 }// end of class

Student.java:


02


04


06 private long id;









15

16 public long getId() {17 return id;

18 }

19

20 public String getStuid() {21 return stuid;

22 }

23

24 public String getSturegno() {25 return sturegno;

26 }

27

28 public String getStuname() {29 return stuname;

30 }

31

32 public String getStumark1() {33 return stumark1;

34 }

35

36 public String getStumark2() {37 return stumark2;

38 }

39


41 return degree;

42 }

43

44 public String getMobileno() {45 return mobileno;

46 }

47

48 public String getMailid() {49 return mailid;

50 }

51

52 public void setId(long string) {53 id = string;

54 }

55

56 public void setStuid(String string) {57 stuid = string;

58 }

59

60 public void setSturegno(String string) {61 sturegno = string;

62 }

63

64 public void setStuname(String string) {65 stuname = string;

66 }

67

68 public void setStumark1(String string) {69 stumark1 = string;

70 }

71

72 public void setStumark2(String string) {73 stumark2 = string;

74 }

75

76 public void setDegree(String string) {77 degree = string;

78 }

79

80 public void setMobileno(String string) {81 mobileno = string;

82 }

83

84 public void setMailid(String string) {85 mailid = string;

86 }

87

88 }

Web.xml:




04 xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/ xml/ns/j2ee/web-app_2_4.xsd">

05 <display-name>Create</display-name>





10 <welcome-file>default.html</welcome-file>11 <welcome-file>default.htm</welcome-file>12 <welcome-file>default.jsp</welcome-file>13 </welcome-file-list>

14 </web-app>

Hibernate.cfg.xml:


02 "-//Hibernate/Hibernate Configuration DTD//EN"03 "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">



06 <property name="connection.driver_class">07 oracle.jdbc.OracleDriver

08 </property>



11 </property>


13 system

14 </property>


16 system

17 </property>



20 <property name="dialect">21 org.hibernate.dialect.OracleDialect

22 </property>


24 <property name="show_sql">true</property>





Student.hbm.xml:






06 <class name="com.candidjava.Student" table="Student2">07 <id name="id" type="long" column="Id">


09 </id>

10 <property name="stuid" column="StuId" not-null="true" />11 <property name="sturegno" column="StuRegNO" />


13 <property name="stumark1" column="StuMark1" />14 <property name="stumark2" column="StuMark2" />


16 <property name="mobileno" column="MobileNo" />17 <property name="mailid" column="MailId" />

18 </class>


OUTPUT:

http://candidjava.com/wp-content/uploads/2012/03/Output111.jpg

Hibernate Session Object

Hibernate Session.Save() Example Program in EclipseHibernate + session.save()+Eclipse

Save:

This Program Explain how to save field values into table (Oracle) Using Hibernate.

session.save()—–Saves the given details into database.

It always saves only new data.

If the given ID already exists, it takes new ID and save data’s for that ID as a new record.

Project Structure:

JAR Files:

http://candidjava.com/wp-content/uploads/2012/02/ProjectStructure.jpg

SaveStudent.java:


02




05 try {

06 SaveStudentControl ctrl = new SaveStudentControl();




10 }

11 }

12 }



02





07


09


11



14 try {






20 }

21 return s;

22 }

23


25 try {






















47 stu.setId(3);










57 s.save(stu);

58 Student ss = new Student();

59 tx.commit();





64 }

65

66 }

67

68 }// end of class

Student.java:


02


04


06 private long id;









15


17 return id;

18 }

19


21 return stuid;

22 }

23


25 return sturegno;

26 }

27


29 return stuname;

30 }

31


33 return stumark1;

34 }

35


37 return stumark2;

38 }

39


41 return degree;

42 }

43


45 return mobileno;

46 }

47


49 return mailid;

50 }

51


53 id = string;

54 }

55


57 stuid = string;

58 }

59



62 }

63



66 }

67



70 }

71



74 }

75


77 degree = string;

78 }

79



82 }

83


85 mailid = string;

86 }

87

88 }

hibernate.cfg.xml:








08 </property>



11 </property>


13 system

14 </property>


16 system

17 </property>





22 </property>








Student.hbm.xml:









09 </id>







16




19 </class>


web.xml:





05 <display-name>SessionObjectSave</display-name>









14 </web-app>







OUTPUT:

Hibernate Session.SaveOrUpdate() Example Program in EclipseHibernate + session.saveOrUpdate() + Eclipse

SaveOrUpdate:

This Program Explains the use of SaveOrUpdate method in session object.

session.saveOrUpdate()—-Updates the Given details for the given Id number.

If ID doesn’t exist it doesn’t change any values.

Project Structure:


JAR Files:


SaveOrUpdateStudent.java:


02

03 public class SaveOrUpdateStudent {


05 try {

06 SaveOrUpdateStudentControl ctrl = newSaveOrUpdateStudentControl();




10 }

11 }

12 }

SaveOrUpdateStudentControl.java:


02





07

08 public class SaveOrUpdateStudentControl {

09


11



14 try {






20 }

21 return s;

22 }

23


25 try {






31 System.out.println("Enter ID to Change");

32 Long id = Long.parseLong(ds.readLine());

















49 stu.setId(id);










59 s.saveOrUpdate(stu);

60 tx.commit();





65 }

66

67 }

68

69 }

Student.java:


02


04


06 private long id;









15


17 return id;

18 }

19


21 return stuid;

22 }

23


25 return sturegno;

26 }

27


29 return stuname;

30 }

31


33 return stumark1;

34 }

35


37 return stumark2;

38 }

39


41 return degree;

42 }

43


45 return mobileno;

46 }

47


49 return mailid;

50 }

51


53 id = string;

54 }

55


57 stuid = string;

58 }

59



62 }

63



66 }

67



70 }

71



74 }

75


77 degree = string;

78 }

79



82 }

83


85 mailid = string;

86 }

87

88 }

hibernate.cfg.xml:








08 </property>




11 </property>


13 system

14 </property>


16 system

17 </property>





22 </property>







Student.hbm.xml:









09 </id>







16



19 </class>


web.xml:





05 <display-name>SessionObjectSaveOrUpdate</display-name>
















14 </web-app>

OUTPUT:

Hibernate Session.Update() Example Program in EclipseHibernate + session.update() + Eclipse

Update:

This program explains how to update records in a table.

session.update()—-Updates the Given details to the given Id number.

If ID doesn’t exist it does nothing (doesn’t change any values).



Project Structure:


JAR Files:


Student.java:


02


04


06 private long id;









15


17 return id;

18 }

19


21 return stuid;

22 }

23


25 return sturegno;

26 }

27


29 return stuname;

30 }

31


33 return stumark1;

34 }

35


37 return stumark2;

38 }

39


41 return degree;

42 }

43


45 return mobileno;

46 }

47


49 return mailid;

50 }

51


53 id = string;

54 }

55


57 stuid = string;

58 }

59



62 }

63



66 }

67



70 }

71



74 }

75


77 degree = string;

78 }

79



82 }

83


85 mailid = string;

86 }

87

88 }

UpdateStudent.java:


02

03 public class UpdateStudent {


05 try {

06 UpdateStudentControl ctrl = new UpdateStudentControl();




10 }

11 }

12 }

UpdateStudentControl.java:


02





07

08 public class UpdateStudentControl {

09


11



14 try {






20 }

21 return s;

22 }

23


25 try {






31 System.out.println("Enter ID to Update");

32 Long id = Long.parseLong(ds.readLine());

















49 stu.setId(id);










59 s.update(stu);

60 tx.commit();





65 }

66

67 }

68

69 }// end of class

hibernate.cfg.xml:








08 </property>




11 </property>


13 system

14 </property>


16 system

17 </property>





22 </property>







Student.hbm.xml:










09 </id>







16



19 </class>


web.xml:


02


03 <display-name>SessionObjectUpdate</display-name>
















12 </web-app>

OUTPUT:

Hibernate Session.Load() Example Program in Eclipse

Hibernate + session.load() + Eclipse

Load:

This program explains how to process only one field in a record using Load.

Load()– Method is used to process only one record at a time.

If ID doesn’t exist it provides No row with the given identifier exists: [com.candidjava.Student#9]


Project Structure:


JAR Files:


LoadStudent.java:


02

03 public class LoadStudent {


05 try {

06 LoadStudentControl ctrl = new LoadStudentControl();




10 }

11 }

12 }

LoadStudentControl.java:


02





07

08 public class LoadStudentControl {

09


11



14 try {






20 }

21 return s;

22 }

23


25 try {




29


31 System.out.println("Enter ID You want Change");

32

33 int id = Integer.parseInt(d.readLine());

34 System.out.println("Enter Degree to Change");

35 String newDegree = d.readLine();


37 Student get = (Student) s.load(Student.class, new Long(id));

38 get.setDegree(newDegree);

39 tx.commit();





44 }

45

46 }

47

48 }// end of class

Student.java:


02


04


06 private long id;









15


17 return id;

18 }

19


21 return stuid;

22 }

23


25 return sturegno;

26 }

27


29 return stuname;

30 }

31


33 return stumark1;

34 }

35


37 return stumark2;

38 }

39


41 return degree;

42 }

43


45 return mobileno;

46 }

47


49 return mailid;

50 }

51


53 id = string;

54 }

55


57 stuid = string;

58 }

59



62 }

63



66 }

67



70 }

71



74 }

75


77 degree = string;

78 }

79



82 }

83


85 mailid = string;

86 }

87

88 }

hibernate.cfg.xml:









08 </property>



11 </property>


13 system

14 </property>


16 system

17 </property>





22 </property>







Student.hbm.xml:









09 </id>







16



19 </class>


web.xml:


02


03 <display-name>SessionObjectLoad</display-name>

















12 </web-app>

OUTPUT:

Hibernate Session.get() Example Program in Eclipse

Hibernate + session.get() + Eclipse

Get:

This program explains how to retrive single row in a record using sessio.get() method

session.get()– Method is used to process only one record at a time.

If ID doesn’t exist it provides null


Project Structure:


JAR Files:


GetStudent.java:


02

03 public class GetStudent {


05 try {

06 GetStudentControl ctrl = new GetStudentControl();




10 }

11 }

12 }

GetStudentControl.java:


02





07

08 public class GetStudentControl {

09


11



14 try {






20 }

21 return s;

22 }

23


25 try {





30 System.out.println("Enter ID to Change Values");

31 Long id = Long.parseLong(d.readLine());


33 String stud = ss.getStuid();

34 Student get = (Student) s.get(Student.class, id);

35 System.out.println("Enter Degree to Change Values");


37 get.setDegree(degree);

38 tx.commit();





43 }

44

45 }

46

47 }// end of class

Student.java:


02


04


06 private long id;









15


17 return id;

18 }

19


21 return stuid;

22 }

23


25 return sturegno;

26 }

27


29 return stuname;

30 }

31


33 return stumark1;

34 }

35


37 return stumark2;

38 }

39


41 return degree;

42 }

43


45 return mobileno;

46 }

47


49 return mailid;

50 }

51


53 id = string;

54 }

55


57 stuid = string;

58 }

59



62 }

63



66 }

67



70 }

71



74 }

75


77 degree = string;

78 }

79



82 }

83


85 mailid = string;

86 }

87

88 }

hibernate.cfg.xml:









08 </property>



11 </property>


13 system

14 </property>


16 system

17 </property>





22 </property>







Student.hbm.xml:









09 </id>







16



19 </class>


web.xml:


02

<web-app id="WebApp_ID" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/ j2ee/web-app_2_4.xsd">









03 <display-name>SessionObjectGet</display-name>









12 </web-app>

OUTPUT:

Hibernate Session.Delete() Example Program in Eclipse


Project Structure:


JAR Files:


DeleteStudent.java:


02


04

05 public class DeleteStudent {

06 public static void main(String[] args) throws Exception {

07


09 System.out.println("Enter the ID You want to Delete");

10 int i = Integer.parseInt(ds.readLine());

11 try {

12 DeleteStudentControll delete = new DeleteStudentControll();

13 delete.DeleteUser(i);


http://candidjava.com/wp-content/uploads/2012/02/jarfiles.jpg


16 }

17 }

18 }

DeleteStudentControll.java:


02

03 import java.util.*;




07 import org.hibernate.Transaction;

08

09 public class DeleteStudentControll {


11



14 try {


16 "com\\xmlFiles\\hibernate.cfg.xml").buildSessionFactory();




20 }

21 return s;

22 }

23

24 public void DeleteUser(int id) {

25 try {

26

27 System.out.println(id);



30 Student u = (Student) s.load(Student.class, new Long(id));// difference between get() and load()

31 s.delete(u);

32 tx.commit();

33 System.out.println("\n\n Record Deleted \n");



36 }

37 }

38

39 }

Student.java:



03 public class Student implements Serializable

04 {

05 private long id;









14


16 return id;

17 }

18


20 return stuid;

21 }


23 return sturegno;

24 }


26 return stuname;

27 }


29 return stumark1;

30 }


32 return stumark2;

33 }

34


36 return degree;

37 }

38


40 return mobileno;

41 }


43 return mailid;

44 }


46 id = string;

47 }

48


50 stuid = string;

51 }



54 }



57 }



60 }



63 }


65 degree = string;

66 }

67



70 }


72 mailid = string;

73 }

74

75 }

hibernate.cfg.xml:








08 </property>



11 </property>


13 system

14 </property>


16 system

17 </property>





22 </property>




26 <mapping resource="\com\\xmlFiles\\Student.hbm.xml" />



Student.hbm.xml:



03 "-//Hibernate/Hibernate Mapping DTD 3.0//EN"




07 <id name="id" type="long" column="ID">


09 </id>

10 <property name="stuid" column="STUID" not-null="true" />

11 <property name="sturegno" column="STUREGNO" not-null="true" />

12 <property name="stuname" column="STUNAME" not-null="true" />

13 <property name="stumark1" column="STUMARK1" not-null="true" />

14 <property name="stumark2" column="STUMARK2" not-null="true" />

15 <property name="degree" column="DEGREE" not-null="true" />

16 <property name="mobileno" column="MOBILENO" not-null="true" />

17 <property name="mailid" column="MAILID" not-null="true" />


18

19 </class>


web.xml:





05 <display-name>SessionwithDeleteQuery</display-name>









14 </web-app>


OUTPUT:







Hibernate Struts Inserting Data Using Eclipse This application will use join struts and hibernate applications.

Here First we will get input from front view html or Jsp page.

Then it will pass model and cotroller using struts application.

Then In controller page input will save the database using Hibernate application.

After save the inputs will pass the front view.


Project Structure:


JarFiles:

http://candidjava.com/wp-content/uploads/2012/03/project-Structure.jpg

AddStudentControl.java:

Here we will use sessionFactory for create connetion Oracle database.

sessionFactory = new Configuration().configure

(“com\\xml\\hibernate.cfg.xml”).buildSessionFactory();

Then we will get input from AddController.java through arguments and then save the database using session.

stu.setStuname(stuname);

s.save(stu);

Then we will use Transaction statement for begin and commit the database.


tx.commit();01 package com.candidjava;

02



http://candidjava.com/wp-content/uploads/2012/03/Jar-Files.jpg



07

08 public class AddStudentControl {

09


11



14 try {






20 }

21 return s;

22 }

23

24 public void addNewStudent(String args, String args1, String args2)

25 throws Exception {

26 try {




30

31 System.out.println("Student name");

32 String stuname = args;

33 String studegree = args1;

34 String stumobileno = args2;

35


37 stu.setStudegree(studegree);

38 stu.setStumobileno(stumobileno);

39

40 s.save(stu);

41

42 tx.commit();

43



46 System.out.println("error1" + e.getMessage());

47 System.out.println("error1");

48 }

49

50 }

51

52 }// end of class

MyController.java:

It is a Controller class .It will extends Action class.

MyModel m = (MyModel)fm;//Here model class object will store in the variable name m.

String s=m.getName();String s1=m.getDegree();String s2=m.getMobileno();//Here get input from model class.

AddStudentControl ctrl = new AddStudentControl();//Here we will create object for AddStudentControl class

ctrl.addNewStudent(s,s1,s2);//Here pass the input to AddNewStudent method through Arguments from

MyController class.01 package com.candidjava;

02

03 import javax.servlet.http.*;

04 import org.apache.struts.action.Action;

05 import org.apache.struts.action.ActionForm;

06 import org.apache.struts.action.ActionForward;

07 import org.apache.struts.action.ActionMapping;

08

09 public class MyController extends Action {

10 public ActionForward execute(ActionMapping map, ActionForm fm,

11 HttpServletRequest req, HttpServletResponse

res) throws Exception {

12 HttpSession ses = req.getSession(true);

13

14 MyModel m = (MyModel) fm;

15 String s = m.getName();

16 String s1 = m.getDegree();

17 String s2 = m.getMobileno();

18

19 System.out.println(s);

20 System.out.println(s1);

21 System.out.println(s2);

22

23 AddStudentControl ctrl = new AddStudentControl();

24 ctrl.addNewStudent(s, s1, s2);

25

26 ses.setAttribute("s", s);

27 ses.setAttribute("s1", s1);

28 ses.setAttribute("s2", s2);

29 if (s.equals("")) {

30 return map.findForward("error");

31 }

32 return map.findForward("success");

33

34 }

35 }

MyModel.java:

It is a Model class. It will extends ActionForm class which is a Serializable class. Then here we will use

get and set method.

private String name;

public String getName(){return name;}

public void setName(String n){name=n; }01 package com.candidjava;

02

03 import org.apache.struts.action.ActionForm;

04

05 public class MyModel extends ActionForm {




09

10 public void setName(String n) {

11 name = n;

12 }

13


15 return name;

16 }

17

18 public void setDegree(String n) {

19 degree = n;

20 }

21


23 return degree;

24 }

25

26 public void setMobileno(String n) {

27 mobileno = n;

28 }

29


31 return mobileno;

32 }

33

34 }

Student.java:

It is a Pojo class. This class Must be a Serializable. Then here we will use get and set method.

private long id;

public long getId() {return id;}

public void setId(long String) {id = String;}01 package com.candidjava;

02


04


06 private long id;


08 private String studegree;

09 private String stumobileno;

10


12 return id;

13 }

14


16 return stuname;

17 }

18

19 public String getStudegree() {

20 return studegree;

21 }

22

23 public String getStumobileno() {

24 return stumobileno;

25 }

26


28 id = string;

29 }

30



33 }

34

35 public void setStudegree(String string) {

36 studegree = string;

37 }

38

39 public void setStumobileno(String string) {

40 stumobileno = string;

41 }

42

43 }

web.xml:

<servlet-name>action</servlet-name>

<servlet-class>org.apache.struts.action.ActionServlet</servlet-class>//This tag will load the ActionServlet class.

<init-param><param-name>config</param-name>

<param-value>/WEB-INF/struts-config.xml</param-value> </init-param>//This tag will use configure the struts-

config.xml.

</servlet>

<servlet-mapping><servlet-name>action</servlet-name>

<url-pattern>*.do</url-pattern> </servlet-mapping>//here *.do invoke the ActionServlet class.

01<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" "http://java.sun.com/dtd/web-app_2_3.dtd">

02 <web-app>

03

04 <servlet>

05 <servlet-name>action</servlet-name>

06 <servlet-class>org.apache.struts.action.ActionServlet</servlet-class>

07 <init-param>

08 <param-name>config</param-name>

09 <param-value>/WEB-INF/struts-config.xml</param-value>

10 </init-param>

11

12 <init-param>

13 <param-name>debug</param-name>

14 <param-value>2</param-value>

15 </init-param>

16 <init-param>

17 <param-name>detail</param-name>

18 <param-value>2</param-value>

19 </init-param>

20 <load-on-startup>2</load-on-startup>

21 </servlet>

22

23 <servlet-mapping>

24 <servlet-name>action</servlet-name>

25 <url-pattern>*.do</url-pattern>

26 </servlet-mapping>

27


29 <welcome-file>Login.jsp</welcome-file>


31

32 <taglib>

33 <taglib-uri>/struts-html</taglib-uri>

34 <taglib-location>/WEB-INF/struts-html.tld</taglib-location>

35 </taglib>

36

37 <security-constraint>

http://java.sun.com/dtd/web-app_2_3.dtd

38 <web-resource-collection>

39 <web-resource-name>My secure resources</web-resource-name>

40 <description>Resources to be placed under security control.</description>

41 <url-pattern>/private/*</url-pattern>

42 <url-pattern>/registered/*</url-pattern>

43 </web-resource-collection>

44 <auth-constraint>

45 <role-name>guest</role-name>

46 </auth-constraint>

47 </security-constraint>

48

49 <login-config>

50 <auth-method>BASIC</auth-method>

51 <realm-name>WebApp</realm-name>

52 </login-config>

53

54 <security-role>

55 <description>The role allowed to access our content</description>

56 <role-name>guest</role-name>

57 </security-role>

58

59 </web-app>

struts-config.xml:

<form-beans><form-bean type=”com.candidjava.MyModel” name =”model” />

</form-beans>//Beans tag will use for model class.Here name=”model” which is same as the controller

name=”model”.

<action-mappings><action path=”/myActionForm” type=”com.candidjava.MyController” name=”model”

input=”/Login.jsp”>//Action mapping tag will use both view and controller.Action tag will use for controller

class.Here path=”/myActionForm” which is same as the front view Login.jsp action=”/myActionForm”.

<forward name=”success” path=”/Success.jsp” />//Forward tag will use for view page.It will forward input to the

view page

<forward name=”error” path=”/Fail.jsp” /></action></action-mappings>01 <?xml version="1.0" encoding="ISO-8859-1" ?>

02

03 <!DOCTYPE struts-config PUBLIC

04 "-//Apache Software Foundation//DTD Struts Configuration 1.2//EN"

05 "http://jakarta.apache.org/struts/dtds/struts-config_1_2.dtd">

06 <struts-config>

07 <form-beans>

08 <form-bean type="com.candidjava.MyModel" name="model" />

09 </form-beans>

10 <action-mappings>

11 <action path="/myActionForm" type="com.candidjava.MyController"

12 name="model" input="/Login.jsp">

13 <forward name="success" path="/Success.jsp" />

14 <forward name="error" path="/Fail.jsp" />

15

16 </action>

17 </action-mappings>

18 </struts-config>

hibernate.cfg.xml:








08 </property>



11 </property>


13 system

14 </property>


16 system

17 </property>





22 </property>



http://jakarta.apache.org/struts/dtds/struts-config_1_2.dtd





Student.hbm.xml:

<class name=”com.candidjava.Student” table=”student” >//This tag will use for mapping Pojo class name and

table name.

<id name=”id” type=”long” column =”ID”><generator class=”increment”/></id>//This tag will use for generating

primary key id and also increment the id value.

<property name=”name” column=”name” not-null=”true”/>//This property will use for mapping the pojo class

veriable name(name=”name” ) and table attribute name(column=”name”).

</class>”/>//End of the class.01 <?xml version="1.0"?>





06 <class name="com.candidjava.Student" table="StudentDet">



09 </id>

10 <property name="stuname" column="StuName" not-null="true" />

11 <property name="studegree" column="Degree" />

12 <property name="stumobileno" column="MobileNo" />

13

14 </class>



OUTPUT:


Hibernate Introduction

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