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// The following shows how we might model sales of
// Ticket for Seminars to Persons without using an
// association class. Note, however, that in this
// model, it would be possible to sell more than
// one ticket to a Person for the same Seminar.
// Using an association class would hence be
// better than this.
class Ticket
{
Integer ticketNumber;
Double price = 0.0;
* -- 1 Person attendee;
* -- 1 Seminar;
}
class Person
{
name;
}
class Seminar
{
Date when;
address;
}//$?[End_of_model]$?
class Person
{
position 331 83 109 60;
}
class Ticket
{
position 41 62 166 77;
position.association Seminar__Ticket 29,80 30,0;
position.association Person:attendee__Ticket 174,44 0,19;
}
class Seminar
{
position 40 233 120 77;
}
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