tests/org.eclipse.m2m.atl.tests/data/expected/CanonicElement/CanonicElement.atl

module CanonicElement;
create OUT: PEOPLE from IN: ROLES;

helper context ROLES!Role def: toTuple: TupleType(id: String, firstName: String,
		lastName: String) =
	Tuple{id = self.personId, firstName = self.personFirstName, lastName = self.
			personLastName};

helper def: roleByTuple: Map(TupleType(id: String, firstName: String, lastName: String),
		ROLES!Role) =
	ROLES!Role.allInstances() -> iterate(r; acc: Map(TupleType(id: String, firstName:
			String, lastName: String), ROLES!Role) = Map {} | acc.including(r.toTuple,
			r));

helper context ROLES!Role def: canonic: ROLES!Role =
	thisModule.roleByTuple.get(self.toTuple);

unique lazy rule RolesToPerson {
	from
		r: TupleType(id: String, firstName: String, lastName: String)
	using {
		roles: Sequence(ROLES!Role) = ROLES!Role.allInstances() -> select(e | e.personId
				= r.id);
	}
	to
		p: PEOPLE!Person (
			id <- r.id,
			firstName <- r.firstName,
			lastName <- r.lastName
		)
}

endpoint rule Transform() {
	do {
		for (r in ROLES!Role.allInstances()) {
				thisModule.RolesToPerson(r.toTuple);
		}
	}
}