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// Example showing nested states.
class Course {
code;
description;
1 -- * CourseSection;
}
class CourseSection
{
// Example from Lethbridge and Laganiere: Object
// Oriented Software Engineering: Practical
// Software Development using UML and Java
// McGraw Hill, 2005
// https://www.site.uottawa.ca/school/research/lloseng/
sectionId;
Integer classSize = 0;
Integer minimumClassSize = 10;
Integer maximumClassSize = 100;
// State machine controlling status
status
{
Planned {
openRegistration -> NotEnoughStudents;
}
Open {
cancel -> Cancelled;
NotEnoughStudents {
closeRegistration -> Cancelled;
register
[getClassSize() > getMinimumClassSize()]
-> EnoughStudents;
}
EnoughStudents {
closeRegistration -> Closed;
register
[getClassSize() > getMaximumClassSize()]
-> Closed;
}
}
Cancelled {}
Closed {}
}
boolean requestToRegister(Student aStudent)
{
register();
return setClassSize(getClassSize()+1);
}
}
class Student {
//Remainder of this class defined elsewhere
}//$?[End_of_model]$?
class Course
{
position 50 30 109 45;
position.association Course__CourseSection 106,80 30,0;
}
class CourseSection
{
position 40 149 201 111;
}
class Student
{
position 260 65 109 45;
}
// @@@skipcppcompile - requestToRegister is specifically java code.
// @@@skipphpcompile - requestToRegister is specifically java code.
// @@@skiprubycompile - requestToRegister is specifically java code.
// @@@skippythoncompile - requestToRegister is specifically java code.
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