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// This example demonstrates two cases of sorted
// associations. The main program adds items out
// of order. But when they are printed the output
// will be sorted
class Academy {
1 -- * Course;
1 -- * Student registrants sorted {id};
}
class Student {
Integer id;
name;
}
class Course {
code;
}
class Registration {
* -- 1 Student;
// In each course, sort registrations by name
* sorted {name} -- 1 Course;
// Derived delegated attribute used for sorting
// printing
name = {getStudent().getName()}
// Derived delegated attribute used for sorting
// printing
code = {getCourse().getCode()}
public String toString() {
return "Registration: " + getName()
+ ":" + getCode();
}
}
// Mixin with main program and toString method
class Academy {
public static void main(String [ ] args) {
Academy ac = new Academy();
Student j = ac.addRegistrant(12,"Jim");
Student a = ac.addRegistrant(4,"Ali");
Student m = ac.addRegistrant(8,"Mary");
Student f = ac.addRegistrant(3,"Francois");
Course c = ac.addCourse("CS191");
Course c2 = ac.addCourse("AN234");
j.addRegistration(c);
a.addRegistration(c);
m.addRegistration(c);
f.addRegistration(c);
m.addRegistration(c2);
f.addRegistration(c2);
System.out.println(ac);
}
public String toString() {
String result="Students:\n";
for (Student s: getRegistrants()) {
result +=s + "\n";
}
result +="Courses:\n";
for (Course c: getCourses()) {
result +=c + "\n";
}
return result;
}
}
class Student {
public String toString() {
String result="Student=" + id + "["
+ name + "\n";
for (Registration r: getRegistrations()) {
result +=" In: " + r + "\n";
}
return result;
}
}
class Course {
public String toString() {
String result ="Course=" + code + "\n";
for (Registration r: getRegistrations()) {
result +=" Has: " + r + "\n";
}
return result;
}
}//$?[End_of_model]$?
class Course
{
position 234 218 202 74;
}
class Student
{
position 33 42 109 74;
}
class Academy
{
position.association Academy__Student:registrants 0,42 109,28;
position 259 31 192 58;
}
class Registration
{
position.association Registration__Student 30,0 44,77;
position.association Course__Registration 110,16 0,29;
position 50 220 109 74;
}
// @@@skipcppcompile - Java-specific code in main and toString in class Academy
// @@@skipphpcompile - Java-specific code in main and toString in class Academy
// @@@skiprubycompile - Java-specific code in main and toString in class Academy
// @@@skippythoncompile - Java-specific code in main and toString in class Academy
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