1 | #pragma once |
---|---|
2 | |
3 | #include <unordered_map> |
4 | #include <Poco/Exception.h> |
5 | #include "GeodataProviders/IHierarchiesProvider.h" |
6 | #include "RegionsHierarchy.h" |
7 | |
8 | |
9 | /** Contains several hierarchies of regions. |
10 | * Used to support several different perspectives on the ownership of regions by countries. |
11 | * First of all, for the Crimea (Russian and Ukrainian points of view). |
12 | */ |
13 | class RegionsHierarchies |
14 | { |
15 | private: |
16 | using Container = std::unordered_map<std::string, RegionsHierarchy>; |
17 | Container data; |
18 | |
19 | public: |
20 | RegionsHierarchies(IRegionsHierarchiesDataProviderPtr data_provider); |
21 | |
22 | /** Reloads, if necessary, all hierarchies of regions. |
23 | */ |
24 | void reload() |
25 | { |
26 | for (auto & elem : data) |
27 | elem.second.reload(); |
28 | } |
29 | |
30 | |
31 | const RegionsHierarchy & get(const std::string & key) const |
32 | { |
33 | auto it = data.find(key); |
34 | |
35 | if (data.end() == it) |
36 | throw Poco::Exception("There is no regions hierarchy for key "+ key); |
37 | |
38 | return it->second; |
39 | } |
40 | }; |
41 |