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Building Tree Structure Domain Model

, 12 Dec 2008 CPOL 21K 209 9
How to build domain model with tree structure, thinking Object-Oriented
package org.schedulemanager.demo.model;

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

public class JobGroup extends Job {
	private List<Job> jobList;

	public JobGroup(String id, String name) {
		this.type = JOBGROUP; = name;
		jobList = new ArrayList<Job>();
	public JobGroup(String id, String name, String circle) {
		this(id, name); = circle;
	public List<Job> getJobList() {
		return jobList;
	public void addJob(Job job){
		if(job!=null && job.getId()!=null){
	public String getCircle() {
		return circle;

	public void setCircle(String circle) { = circle;
	public boolean removeJob(String id){
		boolean result = false;
		for(int i=0;i<jobList.size();i++){
			Job job = jobList.get(i);
			String jobId = job.getId();
				result = true;
		return result;
	public String toString() {
		return "id:" + id 
				+ ",name:" + name 
				+ ",circle:" + circle
				+ ",type:" + type ;

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