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premaseempremaseem
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Composite design pattern - AFTER IMPLEMENTATION CODE
1 parent 0cf88fd commit 2ce82c1

2 files changed

Lines changed: 111 additions & 11 deletions

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‎pattern/src/com/premaseem/Client.java‎

Lines changed: 65 additions & 11 deletions
Original file line numberDiff line numberDiff line change
@@ -13,20 +13,74 @@ public class Client {
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public static void main (String[] args) {
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System.out.println(" Composite Design Pattern Organizational Tree");
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ManagerEmployee managerEmployee = new ManagerEmployee("Aseem");
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ManagerEmployee managerEmployee1 = new ManagerEmployee("Kinesh");
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ManagerEmployee managerEmployee2 = new ManagerEmployee("Karteek");
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// Treating all employees in uniform way ( no discrimination )
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Employee CTO = new Employee("Aseem",1);
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NonManagerEmployee nonManagerEmployee1 = new NonManagerEmployee("Ash");
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NonManagerEmployee nonManagerEmployee2 = new NonManagerEmployee("Amy");
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Employee level_1_1 = new Employee("Kinesh",2);
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Employee level_1_2 = new Employee("Karteek",3);
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Employee level_1_3 = new Employee("Ash",4);
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Map managerEmployees = new HashMap();
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managerEmployees.put(managerEmployee,managerEmployee1);
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managerEmployees.put(managerEmployee1,managerEmployee2);
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managerEmployees.put(managerEmployee,nonManagerEmployee1);
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managerEmployees.put(managerEmployee,nonManagerEmployee2);
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Employee level_2_1 = new Employee("Amy",5);
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Employee level_2_2 = new Employee("Courty",6);
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Employee level_2_3 = new Employee("Jackson",7);
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Employee level_2_4 = new Employee("Leticia",8);
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System.out.println(managerEmployees);
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Employee level_3_1 = new Employee("Peter",9);
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Employee level_3_2 = new Employee("Jodi",10);
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Employee level_3_3 = new Employee("William",11);
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Employee level_3_4 = new Employee("Darly",12);
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// Using tree structure in natural way with Leaf and branch
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CTO.addSubordinate(level_1_1);
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CTO.addSubordinate(level_1_2);
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CTO.addSubordinate(level_1_3);
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// adding level 1 subordinates in tree
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level_1_1.addSubordinate(level_2_1);
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level_1_1.addSubordinate(level_2_2);
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level_1_2.addSubordinate(level_2_3);
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level_1_2.addSubordinate(level_2_4);
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// adding level 2 subordinates in tree
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level_2_2.addSubordinate(level_3_1);
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level_2_2.addSubordinate(level_3_2);
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level_2_3.addSubordinate(level_3_3);
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level_2_3.addSubordinate(level_3_4);
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// Manager details
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System.out.println("Details of Leaf - Non Manager");
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level_2_2.showEmployeeDetails();
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// Non Manager details
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System.out.println("Details of Branch - Manager");
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level_3_1.showEmployeeDetails();
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System.out.println("Details of full tree / entire organization ");
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CTO.showEmployeeDetails();
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/* OLD discarded code */
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// ManagerEmployee managerEmployee = new ManagerEmployee("Aseem");
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// ManagerEmployee managerEmployee1 = new ManagerEmployee("Kinesh");
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// ManagerEmployee managerEmployee2 = new ManagerEmployee("Karteek");
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//
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// NonManagerEmployee nonManagerEmployee1 = new NonManagerEmployee("Ash");
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// NonManagerEmployee nonManagerEmployee2 = new NonManagerEmployee("Amy");
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//
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// Map managerEmployees = new HashMap();
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// // Manager can have another manager under him
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// managerEmployees.put(managerEmployee,managerEmployee1);
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// // Manager can have non manager under him
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// managerEmployees.put(managerEmployee,nonManagerEmployee1);
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// managerEmployees.put(managerEmployee,nonManagerEmployee2);
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// managerEmployees.put(managerEmployee1,managerEmployee2);
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//
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// System.out.println(managerEmployees);
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}
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}

‎pattern/src/com/premaseem/Employee.java‎

Lines changed: 46 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,46 @@
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package com.premaseem;
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import java.util.ArrayList;
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import java.util.List;
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/*
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@author: Aseem Jain
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@title: Design Patterns with Java 9
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@link: https://premaseem.wordpress.com/category/computers/design-patterns/
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*/
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public class Employee {
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private String empName;
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private Integer empId;
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// Composition of same object type
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private List<Employee> subordinateEmployee = new ArrayList<>();
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public Employee (String empName, Integer empId) {
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this.empName = empName;
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this.empId = empId;
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}
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public void addSubordinate(Employee emp){
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subordinateEmployee.add(emp);
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}
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public void removeSubordinate(Employee emp){
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subordinateEmployee.remove(emp);
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}
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public void showEmployeeDetails(){
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System.out.println(toString());
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}
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@Override
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public String toString () {
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String node = subordinateEmployee.size() == 0 ? "No subordinates" : subordinateEmployee.toString();
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String level = subordinateEmployee.size() == 0 ? "Non Manger" : "Manager ";
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return "\n"+ level +" {" +
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"empName='" + empName + '\'' +
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", subordinates =" + node +
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"}";
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}
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}

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