//
//  This is an ODL file for example application of the
//  MATISSE-Eiffel Binding
//
//  File        : example.odl
//  Created  : July 20 1998
//
// 
//  Persistent classes for the example
//


interface BOOK : persistent {
	attribute String title
		mt_make_entry "make-entry";
	attribute Float price = MtFloat(0.000000);
	relationship MT_ARRAY<AUTHOR> written_by 
		inverse AUTHOR::books;
	relationship PUBLISHER publisher
		inverse PUBLISHER::published_books;

	mt_index BookTitleIndex
		criteria {BOOK::title MT_ASCEND 32};
};

interface PERSON : persistent {
	attribute String name
		mt_make_entry "make-entry";
	attribute Long birth_year;
};

interface AUTHOR : PERSON : persistent {
	relationship List<BOOK> books
		inverse BOOK::written_by;
};

interface PUBLISHER : persistent {
	attribute String name
		mt_make_entry "make-entry";
	relationship MT_ARRAYED_LIST<BOOK> published_books
		inverse BOOK::publisher;
};