package Metamodel;

package ATOM {
  class ATOM {
    !unique !ordered attr String[1] title;
    !unique !ordered attr String[1] ~id;
    !unique !ordered attr String subtitle;
    !unique !ordered attr String rights;
    !unique !ordered attr String icon;
    !unique !ordered attr String logo;
    !ordered val Link[+] links;
    !ordered val Date[1] lastUpdate;
    !ordered val Generator generator;
    !ordered val Category[*] categories;
    !ordered val Author[+] authors;
    !ordered val Contributor[*] contibutors;
    !ordered val Entry[*]#atom entries;
  }

  class Entry {
    !unique !ordered attr String[1] title;
    !unique !ordered attr String[1] ~id;
    !unique !ordered attr String rights;
    !unique !ordered attr String summary;
    !ordered val Link[+] links;
    !ordered val Source source;
    !ordered val Date published;
    !ordered val Date[1] lastUpdate;
    !ordered val Content content;
    !ordered val Category[*] categories;
    !ordered val Author[+] authors;
    !ordered val Contributor[*] contibutors;
    !ordered ref ATOM[1]#entries atom;
  }

  class Source {
    !unique !ordered attr String ~id;
    !unique !ordered attr String icon;
    !unique !ordered attr String logo;
    !unique !ordered attr String rights;
    !unique !ordered attr String title;
    !unique !ordered attr String subtitle;
    !ordered val Link[*] links;
    !ordered val Date lastUpdate;
    !ordered val Generator generator;
    !ordered val Contributor[*] contributors;
    !ordered val Category[*] categories;
    !ordered val Author author;
  }

  class Content {
    !unique !ordered attr String type;
  }

  class InLineXHTMLContent extends Content {
  }

  class InLineOtherContent extends Content {
  }

  class OutOfLineContent extends Content {
    !unique !ordered attr String[1] src;
  }

  class Generator {
    !unique !ordered attr String uri;
    !unique !ordered attr String version;
  }

  class Category {
    !unique !ordered attr String[1] term;
    !unique !ordered attr String scheme;
    !unique !ordered attr String label;
  }

  class Link {
    !unique !ordered attr String[1] href;
    !unique !ordered attr String rel;
    !unique !ordered attr String type;
    !unique !ordered attr String hreflang;
    !unique !ordered attr String title;
    !unique !ordered attr Integer lenght;
  }

  class Person {
    !unique !ordered attr String[1] name;
    !unique !ordered attr String uri;
    !unique !ordered attr String email;
  }

  class Author extends Person {
  }

  class Contributor extends Person {
  }

  class Date {
    !unique !ordered attr Integer[1] day;
    !unique !ordered attr Integer[1] month;
    !unique !ordered attr Integer[1] year;
    !unique !ordered attr Integer[1] hours;
    !unique !ordered attr Integer[1] minutes;
    !unique !ordered attr Integer[1] seconds;
  }

}

package PrimitiveTypes {
  datatype String : "";

  datatype Integer : "";

}