Hello,
I want to add few products to the SortedSet and sort them by price. I
add four different elements to TreeSet:
["salt",0.5$], ["milk", 1$], ["bread", 1$], ["bananas", 2$]
But at the end my TreeSet contains only three elements:
["salt",0.5$], ["bread", 1$], ["bananas", 2$]
The "bread" replaced the "milk" because it has the same price. I think
ordering and equity are different aspects and should be separated. A
logically correct SortedSet implementation should contain all four
elements in ordered style. In that way SortedSet would be downward
compatible to inherited Set interface.
To test my thinks I wrote my own SortedSet, which is based on TreeList
from apache-collection and achieved desired results.
PS: With new SortedSet I can sort products by date, or supplier, ... . I
just need to implement my own comparator and can be sure that added
products will be not replaced by others because elements are the same
during comparison.
Best Regards
Andrej
