@GenModel(
	suppressEMFModelTags="true",
	publicConstructors="true",
	codeFormatting="true",
	nonNLSMarkers="true",
	richClientPlatform="true",
	literalsInterface="true",
        resource="XML",
        editDirectory="/my-xcore.edit/src",
        editPluginID="my-xcore.edit"
)

package myxcore

class Library {
	
	String name
	contains Book[0..*] books opposite library
	
}

@GenModel(documentation="Represents a book in a library")
class Book {
	
	@GenModel(documentation="title of the book")
	String title
	container Library library opposite books
	
	@GenModel(documentation="list with authors")
	refers Writer[0..*] authors opposite books
	
}

class Writer {
	
	@GenModel(documentation="name of the author")
	String name
	derived String lastName get {
		if (name != null) {
			val int idx = name.lastIndexOf(' ')
			if (idx != -1) name.substring(idx + 1) else name
		}
	}
	refers Book[0..*] books opposite authors 
	
}