My Blog List

Wednesday, April 24, 2013

Spring Scope

Generally Spring has 5type of scopes
  • 1. SingleTon : Spring IOC make one bean context for container
  • 2. Prototypes : Every request, Spring IOC make every new context
  • 3. Request : For One Request, Spring IOC make one bean context
  • 4. Session : For Session, Spring IOC make one bean context
  • 5. GlobalSession : ...
First default Scope(Singleton)
Student class
package prototype;

/**
 * @author jjhangu
 * 
 */
public class Student {
 private String name = null;

 /**
  * @author jjhangu @create 2013. 4. 25.
  */
 public String getName() {
  return name;
 }

 /**
  * @author jjhangu @create 2013. 4. 25.
  */
 public void setName(String name) {
  this.name = name;
 }

}
Bus class
package prototype;

import java.util.ArrayList;
import java.util.List;

/**
 * @author jjhangu
 * 
 */
public class Bus {

 private List students = new ArrayList();

 public void addStudent(Student student) {
  students.add(student);
 }

 public String getStudents() {
  String names = "";
  for (final Student student : students) {
   names = names + "," + student.getName();
  }
  return names;
 }
}

Main class
package prototype;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

/**
 * @author jjhangu
 * 
 */
public class Main {

 public static void main(String args[]) {
  final ApplicationContext context = new ClassPathXmlApplicationContext("Prototype.xml");

  final Student aaa = (Student) context.getBean("aaa");
  final Student bbb = (Student) context.getBean("bbb");
  final Student ccc = (Student) context.getBean("ccc");

  final Bus bus1 = (Bus) context.getBean("bus");
  bus1.addStudent(aaa);
  bus1.addStudent(bbb);

  System.out.println(" Bus 1 list : " + bus1.getStudents());

  final Bus bus2 = (Bus) context.getBean("bus");
  bus2.addStudent(ccc);

  System.out.println(" Bus 2 list : " + bus2.getStudents());
 }
}

Prototype.xml class


      
    
 
 
 
   
    aaa
   
 
 
 
   
    bbb
   
 
 
 
   
    ccc
   
 
 
 

Bus 1 list : ,aaa,bbb
Bus 2 list : ,aaa,bbb,ccc

Second Scope(prototype)
Prototype.xml class


      
   
 
 
 
   
    aaa
   
 
 
 
   
    bbb
   
 
 
 
   
    ccc
   
 
 
 

Bus 1 list : ,aaa,bbb
Bus 2 list : ,ccc

No comments:

Post a Comment