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#include "schema.h"
#include <library/cpp/iterator/concatenate.h>
namespace NSQLComplete {
namespace {
class TSimpleSchema: public ISimpleSchema {
public:
explicit TSimpleSchema(
THashMap<TString, THashMap<TString, TVector<TFolderEntry>>> folders,
THashMap<TString, THashMap<TString, TTableDetails>> tables)
: Folders_(std::move(folders))
, Tables_(std::move(tables))
{
for (const auto& [_, paths] : Folders_) {
for (const auto& [k, _] : paths) {
Y_ENSURE(k.StartsWith("/"), k << " must start with the '/'");
Y_ENSURE(k.EndsWith("/"), k << " must end with the '/'");
}
}
for (const auto& [_, paths] : Tables_) {
for (const auto& [k, _] : paths) {
Y_ENSURE(k.StartsWith("/"), k << " must start with the '/'");
Y_ENSURE(!k.EndsWith("/"), k << " must not end with the '/'");
}
}
}
TSplittedPath Split(TStringBuf path) const override {
size_t pos = path.find_last_of('/');
if (pos == TString::npos) {
return {.Path = "", .NameHint = path};
}
TStringBuf head;
TStringBuf tail;
TStringBuf(path).SplitAt(pos + 1, head, tail);
return {.Path = head, .NameHint = tail};
}
NThreading::TFuture<TVector<TFolderEntry>> List(TString cluster, TString folder) const override {
TVector<TFolderEntry> entries;
const THashMap<TString, TVector<TFolderEntry>>* tables = nullptr;
const TVector<TFolderEntry>* items = nullptr;
if ((tables = Folders_.FindPtr(cluster)) &&
(items = tables->FindPtr(Qualified(folder)))) {
entries = *items;
}
return NThreading::MakeFuture(std::move(entries));
}
NThreading::TFuture<TMaybe<TTableDetails>>
DescribeTable(const TString& cluster, const TString& path) const override {
auto* tables = Tables_.FindPtr(cluster);
if (tables == nullptr) {
return NThreading::MakeFuture<TMaybe<TTableDetails>>(Nothing());
}
auto* details = tables->FindPtr(Qualified(path));
if (details == nullptr) {
return NThreading::MakeFuture<TMaybe<TTableDetails>>(Nothing());
}
return NThreading::MakeFuture<TMaybe<TTableDetails>>(*details);
}
private:
TString Qualified(TString path) const {
if (!path.StartsWith('/')) {
path.prepend('/');
}
return path;
}
THashMap<TString, THashMap<TString, TVector<TFolderEntry>>> Folders_;
THashMap<TString, THashMap<TString, TTableDetails>> Tables_;
};
} // namespace
ISimpleSchema::TPtr MakeStaticSimpleSchema(TSchemaData data) {
return new TSimpleSchema(std::move(data.Folders), std::move(data.Tables));
}
} // namespace NSQLComplete
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