hbm file version working but annotation not

[Samanthi perera]

I am using Netbenas IDE.
I did same example using hbm file and annotation.

here my config file

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
  <session-factory>
    <property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
    <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
    <property name="hibernate.connection.url">jdbc:mysql://localhost:3306/school</property>
    <property name="hibernate.connection.username">root</property>
    <property name="hibernate.connection.password">root</property>
    <property name="hibernate.show_sql">true</property>
    <property name="hibernate.current_session_context_class">thread</property>
    <mapping resource="people/User.hbm.xml"/>
  </session-factory>
</hibernate-configuration>

here my hbm file

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
    <class name="people.User" table="user">

        <id column="id" name="id">
            <generator class="increment"/>
        </id>

        <property column="password" name="password"/>

    </class>
</hibernate-mapping>

here is my User class

package people;

public class User {

    private Long id;

    public Long getId() {
        return id;
    }

    public void setId(Long id) {
        this.id = id;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }
    private String password;
}

here is main class

package people;

import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;

public class mainClass {

    public static void main(String[] args) {
        Session session = null;
        try {
            SessionFactory sessionFactory = new Configuration().configure().buildSessionFactory();
            session = sessionFactory.openSession();
            session.beginTransaction();

            User user=new User();
            user.setId(new Long(13));
            user.setPassword("saman");
            session.save(user);
            session.getTransaction().commit();

        } catch (Exception e) {
        }
    }
}

this example is working fine.No problem.


anyway i try same with annotation
here my annotation class

package Annotation;

import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.annotations.Entity;
import org.hibernate.cfg.AnnotationConfiguration;

@Entity
public class User {

    @Id
    @GeneratedValue
    public Long getId() {
        return id;
    }

    public void setId(Long id) {
        this.id = id;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }
    private Long id;
    private String password;


    public static void main(String args[]){
    AnnotationConfiguration config = new AnnotationConfiguration();
    config.addAnnotatedClass(User.class);
    config.configure();

    SessionFactory factory =config.buildSessionFactory();
    Session session = factory.getCurrentSession();
    session.beginTransaction();

    User u = new User();
    u.setPassword("abc123");
    session.saveOrUpdate(u);
    
    System.out.println("user saved");
    session.getTransaction().commit();
    System.out.println("transaction successful!!!");
  }


}

then it gives this error

Exception in thread "main" org.hibernate.MappingException: Unknown entity: Annotation.User
        at org.hibernate.impl.SessionFactoryImpl.getEntityPersister(SessionFactoryImpl.java:550)
        at org.hibernate.impl.SessionImpl.getEntityPersister(SessionImpl.java:1338)
        at org.hibernate.engine.ForeignKeys.isTransient(ForeignKeys.java:180)
        at org.hibernate.event.def.AbstractSaveEventListener.getEntityState(AbstractSaveEventListener.java:512)
        at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.performSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:80)
        at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:70)
        at org.hibernate.impl.SessionImpl.fireSaveOrUpdate(SessionImpl.java:507)
        at org.hibernate.impl.SessionImpl.saveOrUpdate(SessionImpl.java:499)
        at org.hibernate.impl.SessionImpl.saveOrUpdate(SessionImpl.java:495)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.hibernate.context.ThreadLocalSessionContext$TransactionProtectionWrapper.invoke(ThreadLocalSessionContext.java:301)
        at $Proxy4.saveOrUpdate(Unknown Source)
        at Annotation.User.main(User.java:45)
Java Result: 1
BUILD SUCCESSFUL (total time: 3 seconds)

[Samanthi perera]

i change my User class

package Annotation;

import javax.persistence.Column;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.Table;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.annotations.Entity;
import org.hibernate.cfg.AnnotationConfiguration;

@Entity
@Table(name = "user", schema = "school")
public class User {

    @Id
    @GeneratedValue
    @Column(name = "id")
    public Long getId() {
        return id;
    }

    public void setId(Long id) {
        this.id = id;
    }

    @Column(name = "password")
    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }
    private Long id;
    private String password;

    public static void main(String args[]) {
        AnnotationConfiguration config = new AnnotationConfiguration();
        config.addAnnotatedClass(User.class);
        config.configure();

        SessionFactory factory = config.buildSessionFactory();
        Session session = factory.getCurrentSession();
        session.beginTransaction();

        User u = new User();
        u.setPassword("abc123");
        session.saveOrUpdate(u);

        System.out.println("user saved");
        session.getTransaction().commit();
        System.out.println("transaction successful!!!");
    }
}

still i am getting error

Exception in thread "main" org.hibernate.MappingException: Unknown entity: Annotation.User
        at org.hibernate.impl.SessionFactoryImpl.getEntityPersister(SessionFactoryImpl.java:550)
        at org.hibernate.impl.SessionImpl.getEntityPersister(SessionImpl.java:1338)
        at org.hibernate.engine.ForeignKeys.isTransient(ForeignKeys.java:180)
        at org.hibernate.event.def.AbstractSaveEventListener.getEntityState(AbstractSaveEventListener.java:512)
        at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.performSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:80)
        at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:70)
        at org.hibernate.impl.SessionImpl.fireSaveOrUpdate(SessionImpl.java:507)
        at org.hibernate.impl.SessionImpl.saveOrUpdate(SessionImpl.java:499)
        at org.hibernate.impl.SessionImpl.saveOrUpdate(SessionImpl.java:495)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.hibernate.context.ThreadLocalSessionContext$TransactionProtectionWrapper.invoke(ThreadLocalSessionContext.java:301)
        at $Proxy5.saveOrUpdate(Unknown Source)
        at Annotation.User.main(User.java:49)
Java Result: 1
BUILD SUCCESSFUL (total time: 3 seconds)

[Anbarasu Aladiyan]

Hi Samanthi perera,
You have added your hbm file version

<mapping resource="people/User.hbm.xml"/>

but not the annotated class.
When you are using annotated version, it must be specified like

<mapping class="class_name"/>

or using the package.

[Samanthi perera]

here is my new config file

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
  <session-factory>
    <property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
    <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
    <property name="hibernate.connection.url">jdbc:mysql://localhost:3306/school</property>
    <property name="hibernate.connection.username">root</property>
    <property name="hibernate.connection.password">root</property>
    <property name="hibernate.show_sql">true</property>
    <property name="hibernate.current_session_context_class">thread</property>
    <mapping class="Annotation/User.java"/>
  </session-factory>
</hibernate-configuration>

still i get error

init:
deps-module-jar:
deps-ear-jar:
deps-jar:
Copying 1 file to D:\PROJECT\Netbeans\MyHibernate\build\web\WEB-INF\classes
compile-single:
run-main:
Mar 15, 2010 5:27:41 PM org.hibernate.cfg.annotations.Version <clinit>
INFO: Hibernate Annotations 3.3.1.GA
Mar 15, 2010 5:27:41 PM org.hibernate.cfg.Environment <clinit>
INFO: Hibernate 3.2.5
Mar 15, 2010 5:27:41 PM org.hibernate.cfg.Environment <clinit>
INFO: hibernate.properties not found
Mar 15, 2010 5:27:41 PM org.hibernate.cfg.Environment buildBytecodeProvider
INFO: Bytecode provider name : cglib
Mar 15, 2010 5:27:41 PM org.hibernate.cfg.Environment <clinit>
INFO: using JDK 1.4 java.sql.Timestamp handling
Mar 15, 2010 5:27:42 PM org.hibernate.cfg.Configuration configure
INFO: configuring from resource: /hibernate.cfg.xml
Mar 15, 2010 5:27:42 PM org.hibernate.cfg.Configuration getConfigurationInputStream
INFO: Configuration resource: /hibernate.cfg.xml
Exception in thread "main" org.hibernate.MappingException: Unable to load class declared as <mapping class="Annotation/User.java"/> in the configuration:
        at org.hibernate.cfg.AnnotationConfiguration.parseMappingElement(AnnotationConfiguration.java:638)
        at org.hibernate.cfg.Configuration.parseSessionFactory(Configuration.java:1555)
        at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1534)
        at org.hibernate.cfg.AnnotationConfiguration.doConfigure(AnnotationConfiguration.java:1002)
        at org.hibernate.cfg.AnnotationConfiguration.doConfigure(AnnotationConfiguration.java:69)
        at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1508)
        at org.hibernate.cfg.AnnotationConfiguration.doConfigure(AnnotationConfiguration.java:990)
        at org.hibernate.cfg.AnnotationConfiguration.doConfigure(AnnotationConfiguration.java:69)
        at org.hibernate.cfg.Configuration.configure(Configuration.java:1428)
        at org.hibernate.cfg.AnnotationConfiguration.configure(AnnotationConfiguration.java:972)
        at org.hibernate.cfg.AnnotationConfiguration.configure(AnnotationConfiguration.java:69)
        at org.hibernate.cfg.Configuration.configure(Configuration.java:1414)
        at org.hibernate.cfg.AnnotationConfiguration.configure(AnnotationConfiguration.java:966)
        at Annotation.User.main(User.java:41)
Caused by: java.lang.ClassNotFoundException: Annotation/User.java
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:169)
        at org.hibernate.util.ReflectHelper.classForName(ReflectHelper.java:100)
        at org.hibernate.cfg.AnnotationConfiguration.parseMappingElement(AnnotationConfiguration.java:635)
        ... 13 more
Java Result: 1
BUILD SUCCESSFUL (total time: 0 seconds)

[Anbarasu Aladiyan]

Replace

 <mapping class="Annotation/User.java"/> 

above line by

   <mapping class="Annotation/User"/>  

then try

[Samanthi perera]

ya .i did that .
then it gives me tyhis error

init:
deps-module-jar:
deps-ear-jar:
deps-jar:
compile-single:
run-main:
Mar 15, 2010 5:39:56 PM org.hibernate.cfg.annotations.Version <clinit>
INFO: Hibernate Annotations 3.3.1.GA
Mar 15, 2010 5:39:57 PM org.hibernate.cfg.Environment <clinit>
INFO: Hibernate 3.2.5
Mar 15, 2010 5:39:57 PM org.hibernate.cfg.Environment <clinit>
INFO: hibernate.properties not found
Mar 15, 2010 5:39:57 PM org.hibernate.cfg.Environment buildBytecodeProvider
INFO: Bytecode provider name : cglib
Mar 15, 2010 5:39:57 PM org.hibernate.cfg.Environment <clinit>
INFO: using JDK 1.4 java.sql.Timestamp handling
Mar 15, 2010 5:39:57 PM org.hibernate.cfg.Configuration configure
INFO: configuring from resource: /hibernate.cfg.xml
Mar 15, 2010 5:39:57 PM org.hibernate.cfg.Configuration getConfigurationInputStream
INFO: Configuration resource: /hibernate.cfg.xml
Exception in thread "main" org.hibernate.MappingException: Unable to load class declared as <mapping class="Annotation/User"/> in the configuration:
        at org.hibernate.cfg.AnnotationConfiguration.parseMappingElement(AnnotationConfiguration.java:638)
        at org.hibernate.cfg.Configuration.parseSessionFactory(Configuration.java:1555)
        at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1534)
        at org.hibernate.cfg.AnnotationConfiguration.doConfigure(AnnotationConfiguration.java:1002)
        at org.hibernate.cfg.AnnotationConfiguration.doConfigure(AnnotationConfiguration.java:69)
        at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1508)
        at org.hibernate.cfg.AnnotationConfiguration.doConfigure(AnnotationConfiguration.java:990)
        at org.hibernate.cfg.AnnotationConfiguration.doConfigure(AnnotationConfiguration.java:69)
        at org.hibernate.cfg.Configuration.configure(Configuration.java:1428)
        at org.hibernate.cfg.AnnotationConfiguration.configure(AnnotationConfiguration.java:972)
        at org.hibernate.cfg.AnnotationConfiguration.configure(AnnotationConfiguration.java:69)
        at org.hibernate.cfg.Configuration.configure(Configuration.java:1414)
        at org.hibernate.cfg.AnnotationConfiguration.configure(AnnotationConfiguration.java:966)
        at Annotation.User.main(User.java:41)
Caused by: java.lang.ClassNotFoundException: Annotation/User
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:169)
        at org.hibernate.util.ReflectHelper.classForName(ReflectHelper.java:100)
        at org.hibernate.cfg.AnnotationConfiguration.parseMappingElement(AnnotationConfiguration.java:635)
        ... 13 more
Java Result: 1
BUILD SUCCESSFUL (total time: 0 seconds)

i don't know why it can't find my class.

[Christian Dillinger]

Hibernate Annotations comes with a really great documentation for beginners. Read it and you'll see, that you have to write something like that

<mapping class="test.Person"/>

and not like that

<mapping class="test/Person"/>

The unfriendly part in "a friendly place for Java greenhorns":
Did you ever hear about such things called "tutorial" or "documentation"? Do you really really really want to learn Java, Hibernate and the other things by posting each and every little problem into forums? You've been told that in some other threads... RTFM! Or try google at first.

[Anbarasu Aladiyan]

Hi Samanthi perera,

   <mapping class="Annotation/User"/> 

replace above line by

   <mapping class="Annotation.User"/> 

Use . not /.

[Samanthi perera]

i am using this tutorial

http://www.vaannila.com/hibernate/hibernate-example/hibernate-mapping-many-to-one-using-annotations-1.html

[Christian Dillinger]

The solution to you question is in that tutorial...

...
<mapping class="com.vaannila.student.Student"  />
...

[Samanthi perera]

no.
Still i have the error

Exception in thread "main" org.hibernate.MappingException: Unknown entity: Annotation.User
        at org.hibernate.impl.SessionFactoryImpl.getEntityPersister(SessionFactoryImpl.java:550)
        at org.hibernate.impl.SessionImpl.getEntityPersister(SessionImpl.java:1338)
        at org.hibernate.engine.ForeignKeys.isTransient(ForeignKeys.java:180)
        at org.hibernate.event.def.AbstractSaveEventListener.getEntityState(AbstractSaveEventListener.java:512)
        at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.performSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:80)
        at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:70)
        at org.hibernate.impl.SessionImpl.fireSaveOrUpdate(SessionImpl.java:507)
        at org.hibernate.impl.SessionImpl.saveOrUpdate(SessionImpl.java:499)
        at org.hibernate.impl.SessionImpl.saveOrUpdate(SessionImpl.java:495)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.hibernate.context.ThreadLocalSessionContext$TransactionProtectionWrapper.invoke(ThreadLocalSessionContext.java:301)
        at $Proxy5.saveOrUpdate(Unknown Source)
        at Annotation.User.main(User.java:51)
Java Result: 1
BUILD SUCCESSFUL (total time: 1 second)

[Christian Dillinger]

Maybe you should repost your configuration, your mapped class and your main class. Because no one knows what you changed between to different runs. E.g. one of your stacktraces contained this: "people/User.hbm.xml". Now you class is Annotation.User or isn't it or is it or not?

[Samanthi perera]

this is my config file

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
  <session-factory>
    <property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
    <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
    <property name="hibernate.connection.url">jdbc:mysql://localhost:3306/school</property>
    <property name="hibernate.connection.username">root</property>
    <property name="hibernate.connection.password">root</property>
    <property name="hibernate.show_sql">true</property>
    <property name="hibernate.current_session_context_class">thread</property>
    <mapping class="Annotation.User"/>
  </session-factory>
</hibernate-configuration>

User class

package Annotation;

import javax.persistence.Column;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.Table;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.annotations.Entity;
import org.hibernate.cfg.AnnotationConfiguration;

@Entity
@Table(name = "user", schema = "school")
public class User {

    @Id
    @GeneratedValue
    @Column(name = "id")
    public Long getId() {
        return id;
    }

    public void setId(Long id) {
        this.id = id;
    }

    @Column(name = "password")
    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }
    private Long id;
    private String password;

    public static void main(String args[]) {
        Session session = HibernateUtil.getSessionFactory().openSession();
        //Transaction transaction = null;
        try {
            session.beginTransaction();
            User u = new User();
            u.setId(new Long(12));
            u.setPassword("abc123");
            session.saveOrUpdate(u);

            System.out.println("user saved");
            session.getTransaction().commit();
            System.out.println("transaction successful!!!");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

util class

package Annotation;

import org.hibernate.SessionFactory;
import org.hibernate.cfg.AnnotationConfiguration;

public class HibernateUtil {

    private static final SessionFactory sessionFactory;

    static {
        try {
            sessionFactory = new AnnotationConfiguration().configure().buildSessionFactory();

        } catch (Throwable ex) {
            System.err.println("Initial SessionFactory creation failed." + ex);
            throw new ExceptionInInitializerError(ex);
        }
    }

    public static SessionFactory getSessionFactory() {
        return sessionFactory;
    }
}

error

org.hibernate.MappingException: Unknown entity: Annotation.User
        at org.hibernate.impl.SessionFactoryImpl.getEntityPersister(SessionFactoryImpl.java:550)
        at org.hibernate.impl.SessionImpl.getEntityPersister(SessionImpl.java:1338)
        at org.hibernate.engine.ForeignKeys.isTransient(ForeignKeys.java:180)
        at org.hibernate.event.def.AbstractSaveEventListener.getEntityState(AbstractSaveEventListener.java:512)
        at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.performSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:80)
        at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:70)
        at org.hibernate.impl.SessionImpl.fireSaveOrUpdate(SessionImpl.java:507)
        at org.hibernate.impl.SessionImpl.saveOrUpdate(SessionImpl.java:499)
        at org.hibernate.impl.SessionImpl.saveOrUpdate(SessionImpl.java:495)
        at Annotation.User.main(User.java:47)
BUILD SUCCESSFUL (total time: 2 seconds)

[Christian Dillinger]

There are several classes called Annotation. Maybe Hibernate assumes Annotation.User to be an inner class of some of these classes. E.g. java.text.Annotation. Rename your package to annotation. Naming conventions aren't always useless... In this special case: each part of the fully qualified package-name are written in lower-case.

[Anbarasu Aladiyan]

Check the Entity package you are importing

 import org.hibernate.annotations.Entity;

I think it must be

    import javax.persistence.Entity;

[Samanthi perera]

config class

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
  <session-factory>
    <property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
    <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
    <property name="hibernate.connection.url">jdbc:mysql://localhost:3306/school</property>
    <property name="hibernate.connection.username">root</property>
    <property name="hibernate.connection.password">root</property>
    <property name="hibernate.show_sql">true</property>
    <property name="hibernate.current_session_context_class">thread</property>
    <!-- <mapping resource="people/User.hbm.xml"/> -->
    <mapping class="my.User"/> 
   </session-factory> 
</hibernate-configuration>

user class

package my;

import java.io.Serializable;
import javax.persistence.Column;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.Table;
import org.hibernate.Session;
import javax.persistence.Entity; 
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.cfg.AnnotationConfiguration;

@Entity
@Table(name = "user",schema = "school")
public class User implements Serializable {

    @Id
    @GeneratedValue
    @Column(name = "id")
    public Long getId() {
        return id;
    }

    public void setId(Long id) {
        this.id = id;
    }

    @Column(name = "password")
    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }
    private Long id;
    private String password;

    public static void main(String args[]) {
       // Session session = HibernateUtil.getSessionFactory().openSession();
        SessionFactory sessionFack=new AnnotationConfiguration().configure().buildSessionFactory();
        Session session=sessionFack.openSession();
        Transaction transaction = null;
        try {
            transaction=session.beginTransaction();
            User u = new User();
            u.setId(new Long(15));
            u.setPassword("abc1234");
            session.save(u);

            System.out.println("user saved");
            transaction.commit();
            System.out.println("transaction successful!!!");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

Now it is working.

[Samanthi perera]

config class

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
  <session-factory>
    <property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
    <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
    <property name="hibernate.connection.url">jdbc:mysql://localhost:3306/school</property>
    <property name="hibernate.connection.username">root</property>
    <property name="hibernate.connection.password">root</property>
    <property name="hibernate.show_sql">true</property>
    <property name="hibernate.current_session_context_class">thread</property>
    <!-- <mapping resource="people/User.hbm.xml"/> -->
    <mapping class="my.User"/> 
   </session-factory> 
</hibernate-configuration>

user class

package my;

import java.io.Serializable;
import javax.persistence.Column;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.Table;
import org.hibernate.Session;
import javax.persistence.Entity; 
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.cfg.AnnotationConfiguration;

@Entity
@Table(name = "user",schema = "school")
public class User implements Serializable {

    @Id
    @GeneratedValue
    @Column(name = "id")
    public Long getId() {
        return id;
    }

    public void setId(Long id) {
        this.id = id;
    }

    @Column(name = "password")
    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }
    private Long id;
    private String password;

    public static void main(String args[]) {
       // Session session = HibernateUtil.getSessionFactory().openSession();
        SessionFactory sessionFack=new AnnotationConfiguration().configure().buildSessionFactory();
        Session session=sessionFack.openSession();
        Transaction transaction = null;
        try {
            transaction=session.beginTransaction();
            User u = new User();
            u.setId(new Long(15));
            u.setPassword("abc1234");
            session.save(u);

            System.out.println("user saved");
            transaction.commit();
            System.out.println("transaction successful!!!");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

Now it is working.

[Anbarasu Aladiyan]

SessionFactory sessionFack=new AnnotationConfiguration().configure().buildSessionFactory();

I think you are not using the cfg.xml file

[Samanthi perera]

why did you say that?
what is the meanning of that?

[Anbarasu Aladiyan]

   // Session session = HibernateUtil.getSessionFactory().openSession();   
        SessionFactory sessionFack=new AnnotationConfiguration().configure().buildSessionFactory();

That's my guess. I think you are using two classes for building session factory. One is for using cfg.xml file and another one is for annotated version.
If you are using annotated version for building session factory then no need to worry about your cfg file.

[Samanthi perera]

this is my user class

package my;

import java.io.Serializable;
import javax.persistence.Column;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.Table;
import org.hibernate.Session;
import javax.persistence.Entity;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.cfg.AnnotationConfiguration;

@Entity
@Table(name = "user", schema = "school")
public class User implements Serializable {

    @Id
    @GeneratedValue
    @Column(name = "id")
    public Long getId() {
        return id;
    }

    public void setId(Long id) {
        this.id = id;
    }

    @Column(name = "password")
    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }
    private Long id;
    private String password;

    public static void main(String args[]) {
      
        
        SessionFactory sessionFack = new AnnotationConfiguration().configure().buildSessionFactory();
        Session session = sessionFack.openSession();
        Transaction transaction = null;
        try {
            transaction = session.beginTransaction();
            User u = new User();
            u.setId(new Long(16));
            u.setPassword("abc12348");
            session.save(u);

            System.out.println("user saved");
            transaction.commit();
            System.out.println("transaction successful!!!");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

this is my cfg.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
  <session-factory>
    <property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
    <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
    <property name="hibernate.connection.url">jdbc:mysql://localhost:3306/school</property>
    <property name="hibernate.connection.username">root</property>
    <property name="hibernate.connection.password">root</property>
    <property name="hibernate.show_sql">true</property>
    <property name="hibernate.current_session_context_class">thread</property>
    <!-- <mapping resource="people/User.hbm.xml"/> -->
    <mapping class="my.User"/> 
   </session-factory> 
</hibernate-configuration>

If you are using these two classes can you tell me how to make a SessionFactory using
1)only cfg.xml
2)only annotated class

[Anbarasu Aladiyan]

I think you are not getting my point. post "HibernateUtil" and "AnnotationConfiguration" class codes.

[Samanthi perera]

aha.then it is ok.
I am not using the Hibernate util class.I mean in this example.
anyway it is here.

package my;

import org.hibernate.SessionFactory;
import org.hibernate.cfg.AnnotationConfiguration;

public class HibernateUtil {

    private static final SessionFactory sessionFactory;

    static {
        try {
            sessionFactory = new AnnotationConfiguration().configure().buildSessionFactory();

        } catch (Throwable ex) {
            System.err.println("Initial SessionFactory creation failed." + ex);
            throw new ExceptionInInitializerError(ex);
        }
    }

    public static SessionFactory getSessionFactory() {
        return sessionFactory;
    }
}

[Christian Dillinger]

Anbarasu Aladiyan wrote:I think you are not getting my point. post "HibernateUtil" and "AnnotationConfiguration" class codes.

Why are you doing this? If you want to help him, don't ask him for code of AnnotationConfiguration. That's a Hibernate class not his own.

[Anbarasu Aladiyan]

Christian Dillinger wrote:

Anbarasu Aladiyan wrote:I think you are not getting my point. post "HibernateUtil" and "AnnotationConfiguration" class codes.

Why are you doing this? If you want to help him, don't ask him for code of AnnotationConfiguration. That's a Hibernate class not his own.

There are two ways to build the session factory. Using cfg.xml file and another one is without using the cfg xml file (in which we can give the configuration details using java code. Which is likely used when we do annotated version).
If we use annotated version then obliviously it has nothing to do with cfg file (since we can configuration details using java code when we build session factory)

Also I don't think that is possible to help without seeing the code

[Christian Dillinger]

Anbarasu Aladiyan wrote:There are two ways to build the session factory. Using cfg.xml file and another one is without using the cfg xml file (in which we can give the configuration details using java code. Which is likely used when we do annotated version).
If we use annotated version then obliviously it has nothing to do with cfg file (since we can configuration details using java code when we build session factory)

Also I don't think that is possible to help without seeing the code

Why should anyone want to get rid of the cfg.xml completly just because he uses annotated entities? You because you CAN configure your annotated classes programmatically it's by far not OBVIOUS that you do not want a hibernate.cfg.xml. You need the class AnnotationConfiguration if you want to use annotated classes, that's the whole difference.
What is easier when you add a new entity? Insert one line in a textfile without recompiling or change code in another class?

BTW we seen his complete code over and over again in the thread and the problem finally got solved...