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 Tools and Libs > SOJO > Complex Bean to Map Conversion

Complex Bean to Map Conversion 

SOJO (Simplified Old Java Objects) is a Java framework which converts object graph into a specific structure or representation. This requires the library sojo-1.0.0.jar to be in classpath. The following example shows using Converter class. It converts the given bean to map.

File Name  :  
com/bethecoder/tutorials/sojo/common/Student.java 
   
package com.bethecoder.tutorials.sojo.common;

public class Student {

  private String name;
  private int age;
  private String hobby;

  public Student() {
  }

  public Student(String name, int age, String hobby) {
    super();
    this.name = name;
    this.age = age;
    this.hobby = hobby;
  }

  public String getName() {
    return name;
  }
  public void setName(String name) {
    this.name = name;
  }
  public int getAge() {
    return age;
  }
  public void setAge(int age) {
    this.age = age;
  }
  public String getHobby() {
    return hobby;
  }
  public void setHobby(String hobby) {
    this.hobby = hobby;
  }
  
  public String toString() {
    return "Student[name = " + name + ", age = " + age + ", hobby = " + hobby + "]";
  }
}
   

File Name  :  
com/bethecoder/tutorials/sojo/common/ComplexBean.java 
   
package com.bethecoder.tutorials.sojo.common;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

public class ComplexBean {

  private List<Student> studentList = new ArrayList<Student>();
  private Map<String, List<Student>> subjectStudentMap = new HashMap<String, List<Student>>();
  
  public List<Student> getStudentList() {
    return studentList;
  }
  public void setStudentList(List<Student> studentList) {
    this.studentList = studentList;
  }
  public Map<String, List<Student>> getSubjectStudentMap() {
    return subjectStudentMap;
  }
  public void setSubjectStudentMap(Map<String, List<Student>> subjectStudentMap) {
    this.subjectStudentMap = subjectStudentMap;
  }
}
   

File Name  :  
com/bethecoder/tutorials/sojo/tests/ComplexBeanToMapConversion.java 
Author  :  Sudhakar KV
Email  :  kvenkatasudhakar@gmail.com
   
package com.bethecoder.tutorials.sojo.tests;

import java.io.IOException;
import java.util.Arrays;

import net.sf.sojo.core.Converter;
import net.sf.sojo.core.conversion.ComplexBean2MapConversion;

import com.bethecoder.tutorials.sojo.common.ComplexBean;
import com.bethecoder.tutorials.sojo.common.Student;

public class ComplexBeanToMapConversion {

  /**
   @param args
   */
  public static void main(String[] argsthrows IOException {
    
    Student student = new Student("Sriram"2"Chess");
    Student student2 = new Student("Sudhakar"29"Painting");
    Student student3 = new Student("Charan"18"Reading books");
    
    ComplexBean complexBean = new ComplexBean();
    complexBean.getStudentList().addAll(Arrays.asList(student, student2, student3));
    complexBean.getSubjectStudentMap().put("MATHS"
        Arrays.asList(student, student2, student3));
    
    complexBean.getSubjectStudentMap().put("PHYSICS"
        Arrays.asList(student, student2));
    
    Converter converter = new Converter();
    converter.addConversion(new ComplexBean2MapConversion());
    
    Object result = converter.convert(complexBean);
    System.out.println(result);
  }
}
   

It gives the following output,
{	
	~unique-id~=0, 
	class=com.bethecoder.tutorials.sojo.common.ComplexBean, 
	
	studentList=[Student[name = Sriram, age = 2, hobby = Chess], 
	Student[name = Sudhakar, age = 29, hobby = Painting], 
	Student[name = Charan, age = 18, hobby = Reading books]], 
	
	subjectStudentMap={
		MATHS=[Student[name = Sriram, age = 2, hobby = Chess], 
		Student[name = Sudhakar, age = 29, hobby = Painting], 
		Student[name = Charan, age = 18, hobby = Reading books]], 
		
		PHYSICS=[Student[name = Sriram, age = 2, hobby = Chess], 
		Student[name = Sudhakar, age = 29, hobby = Painting]]
	}
}


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