class Department {
ZZ_EXT_Department
int deptNo;
.......
};
class Employee {
ZZ_EXT_Employee
long salary, startingDate;
.......
};
ZZ_HYPER_SINGLE_TREE(depts,Department);
ZZ_HYPER_DOUBLE_AGGREGATE(empls,Department,Employee);
ZZ_HYPER_NAME(emplName,Employee);
ZZ_HYPER_UTILITIES(util);
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