VenkataPrasad Regula

It is not existing in the Session api, but it is existing Session facade api . The code is shown below
Configuration config = new Configuration(); config.[b]setInterceptor(new MyInterceptor()[/b]); factory = config.configure().buildSessionFactory();

I would like to ask you "Is my question clear", because if not I would retype it again to make things clear..

The hibernate version I used was 4.1.2. I am not finding version 3 on hibernate website

I am working with interceptors in Hibernate. I am using the hibernate version 4. In the tutorials (almost all found on the net), they are passing the interceptor as a parameter to openSession() method as below
factory.openSession( new MyInterceptor() );

As i go to the eclipse and type the code it is not having that api which takes Interceptor as parameter for openSessionMethod. It is not even having object as parameter. Could someone guide me.

The answer to the above question is at the link www.coderanch.com/t/96328/Testing/handle-exception-JUnit-code

How do you write a testcase to test ArrayIndexOutOfBounds for an array in junit? Thanks in advance.

My task is to
1. Instantiate an object(a)
2. declare an other of the same class(b)
3. clone the object in step 1 to step 2(b=a.clone())
4. check if a and b are equal(a== b and a.equals(b))
5 Declare a hashset and add both a and b to the hashset.

Now my issues are as below
1. For Code 1 below HashSet is showing 1 as the count
2. For Code 2 below HashSet is showing 2 as the count.
Code1
import java.util.Arrays; import java.util.HashSet; import java.util.Set; public class MainClass { String elements[] = { "A", "B", "C", "D", "E" }; Set set = new HashSet(Arrays.asList(elements)); Set set2 = ((Set) ((HashSet) set).clone()); System.out.println(set2); Set cset = new HashSet(); cset.add(set); cset.add(set2); System.out.println("Size of HashSet is "+cset.size()); [b]//returns value 1[/b] } }

Code 2
public class Person implements Cloneable { private int age; public int getAge() { return age; } public void setAge(int age) { this.age = age; } public Object clone() { try { return super.clone(); } catch (CloneNotSupportedException e) { // TODO Auto-generated catch block e.printStackTrace(); } return 0; } } =============================================== package core; import java.util.Arrays; import java.util.HashSet; import java.util.Set; public class CloningPrg { public static void main(String[] args) { Person a = new Person(); a.setAge(10); Person b = (Person) a.clone(); System.out.println(b); System.out.println(a); if (a.equals(b)) System.out.println("Both are equal"); else System.out.println("Both are unequal"); int x = a.hashCode(); int y = b.hashCode(); System.out.println("X value is " + x); System.out.println("Y value is " + y); Set cset = new HashSet(); cset.add(a); cset.add(b); System.out.println("CSET size is "+cset.size());//It is returning 2 } }

In any Hibernate tutorial we find the following steps

1. Create a Session Factory
2. Create a session
3. Do the unit of work
4. Close the session.

In an enterprise environment, we have the following issues as
1. How to create the session for different pages
2. If the page has multiple tasks to be done on a single page
3. If the result is returned to a page we return the POJO, which indicates the session will still be open. How to close the session
4. If the session is closed before return we cant return to the results page as the whole conversation gets closed by session.close()

When you write a junit test methods code, does it catch checked exception or unchecked exception?

As I try to start glassfish from myeclipse I am getting the following error

Exception in thread "main" java.lang.NoClassDefFoundError: com/sun/enterprise/glassfish/bootstrap/ASMain
Caused by: java.lang.ClassNotFoundException: com.sun.enterprise.glassfish.bootstrap.ASMain
at java.net.URLClassLoader$1.run(URLClassLoader.java:217)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
at java.lang.ClassLoader.loadClass(ClassLoader.java:321)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294)
at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
Could not find the main class: com.sun.enterprise.glassfish.bootstrap.ASMain. Program will exit.

As i start glassfish from myeclipse I am getting the following error. Can someone please kindly look into it.

Exception in thread "main" java.lang.NoClassDefFoundError: com/sun/enterprise/glassfish/bootstrap/ASMain
Caused by: java.lang.ClassNotFoundException: com.sun.enterprise.glassfish.bootstrap.ASMain
at java.net.URLClassLoader$1.run(URLClassLoader.java:217)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
at java.lang.ClassLoader.loadClass(ClassLoader.java:321)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294)
at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
Could not find the main class: com.sun.enterprise.glassfish.bootstrap.ASMain. Program will exit.

I have an abstract class and two concrete class which extend these abstract class. I have mapped all the three in a employee.hbm.xml file. It is throwing the following error. My db is mysql

Exception in thread "main" org.hibernate.NonUniqueObjectException: a different object with the same identifier value was already associated with the session: [temp.ContractEmployee#0]

.
Could someone kindly look into it.

Abstract Class
package temp; public abstract class Employee { public long id; public String employeeName; public String location; public String getEmployeeName() { return employeeName; } public void setEmployeeName(String employeeName) { this.employeeName = employeeName; } public String getLocation() { return location; } public void setLocation(String location) { this.location = location; } public long getId() { return id; } public void setId(long id) { this.id = id; } }

Extended Class 1
package temp; public class RegularEmployee extends Employee { public double salary; public double bonus; public double getSalary() { return salary; } public void setSalary(double salary) { this.salary = salary; } public double getBonus() { return bonus; } public void setBonus(double bonus) { this.bonus = bonus; } }
Extended Class 2
package temp; public class ContractEmployee extends Employee { public double hourlyRate; public double perDiem; public double contractPeriod; public double getHourlyRate() { return hourlyRate; } public void setHourlyRate(double hourlyRate) { this.hourlyRate = hourlyRate; } public double getPerDiem() { return perDiem; } public void setPerDiem(double perDiem) { this.perDiem = perDiem; } public double getContractPeriod() { return contractPeriod; } public void setContractPeriod(double contractPeriod) { this.contractPeriod = contractPeriod; } }

MainClass
package temp; import org.hibernate.Session; import org.hibernate.SessionFactory; import org.hibernate.cfg.Configuration; public class Main { public static void main(String[] args) { SessionFactory sessionFactory; sessionFactory = new Configuration().configure().buildSessionFactory(); Session session = sessionFactory.openSession(); session.beginTransaction(); RegularEmployee regular = new RegularEmployee(); regular.setEmployeeName("Prasad"); regular.setLocation("Hyderabad"); regular.setBonus(500.00); regular.setSalary(20000.00); ContractEmployee cemployee = new ContractEmployee(); cemployee.setEmployeeName("Sai"); cemployee.setLocation("Hyderabad"); cemployee.setContractPeriod(12); cemployee.setHourlyRate(50.00); cemployee.setPerDiem(300.00); session.clear(); session.save(regular); session.save(cemployee); session.getTransaction().commit(); session.flush(); session.close(); } }
employee.hbm.xml file
<?xml version="1.0"?> <!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"> <hibernate-mapping> <class name="temp.Employee" abstract="true"> <id name="id" column="EMP_ID" type="long"> <generator class="assigned"></generator> </id> <property name="employeeName" column="EMP_NAME" type="string"/> <property name="location" column="LOCATION" type="string"/> <union-subclass name="temp.RegularEmployee" table="REG_EMP"> <property name="salary" column="SALARY"/> <property name="bonus" column="BONUS"/> </union-subclass> <union-subclass name="temp.ContractEmployee" table="CON_EMP"> <property name="hourlyRate" column="RATE"/> <property name="perDiem" column="PER_DIEM"/> <property name="contractPeriod" column="CON_PERIOD"/> </union-subclass> </class> </hibernate-mapping>

The issue is resolved. I have added session.flush() before session.close(). Now the data is displayed.

I wrote a sample Hibernate code to insert data, by looking at one of the tutorials found on google. Interesting thing is as I open MySQL sql editor, I am finding the column names but the data is not found. I am struggling with it since two days.My issues are
1. Data is not being displayed on mysql sql editor. I tried the same with postgres too. The same issue.
2. I have given show_sql as true in hibernate.cfg.xml file, I am not able to see the sql query

As I have put the debugger statements, I am able to see all the statements as below
1070 [main] INFO org.hibernate.type.BasicTypeRegistry - Type registration [materialized_clob] overrides previous : org.hibernate.type.MaterializedClobType@1f6226 1070 [main] INFO org.hibernate.type.BasicTypeRegistry - Type registration [characters_clob] overrides previous : org.hibernate.type.PrimitiveCharacterArrayClobType@64ea66 1304 [main] INFO org.hibernate.impl.SessionFactoryObjectFactory - Not binding factory to JNDI, no JNDI name configured [b]Session Factory object created Session object created Contact object saved Session object closed[/b]
Environment

OS: Ubuntu
Database: MySQL
ORM tool: Hibernate
IDE eclipse

My issue got resolved the change I have done is as follows

Session session = sessionFactory.getCurrentSession(); //Earlier I was using

Session session = sessionFactory.openSession(); //I changed the above line to this as shown

Now it is working fine.