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#include "schema_json.h"
#include "schema.h"
#include <util/generic/hash.h>
#include <util/generic/vector.h>
#include <util/generic/scope.h>
#include <util/string/join.h>
namespace NSQLComplete {
namespace {
TString PathString(const TVector<TString>& path) {
return "/" + JoinSeq("/", path);
}
const NJson::TJsonValue& Expect(
const TVector<TString>& path,
const NJson::TJsonValue::TMapType& json,
TStringBuf key) {
if (!json.contains(key)) {
ythrow yexception() << "At " << PathString(path) << " expected " << key;
}
return json.at(key);
}
const NJson::TJsonValue::TMapType& ExpectMap(
const TVector<TString>& path,
const NJson::TJsonValue& json) {
if (!json.IsMap()) {
ythrow yexception() << "At " << PathString(path) << " expected Map";
}
return json.GetMapSafe();
}
const NJson::TJsonValue::TMapType& ExpectMap(
const TVector<TString>& path,
const NJson::TJsonValue::TMapType& json,
TStringBuf key) {
Expect(path, json, key);
return ExpectMap(path, json.at(key));
}
TString Parse(
const TString& cluster,
const NJson::TJsonValue::TMapType& json,
TSchemaData& data,
TVector<TString>& path);
void ParseFolder(
const TString& cluster,
const NJson::TJsonValue::TMapType& json,
TSchemaData& data,
TVector<TString>& path) {
for (const auto& [name, entry] : ExpectMap(path, json, "entries")) {
path.emplace_back(name);
TString type = Parse(cluster, ExpectMap(path, entry), data, path);
path.pop_back();
TStringBuf suffix = (!path.empty()) ? "/" : "";
data.Folders[cluster][PathString(path) + suffix].emplace_back(type, name);
}
}
void ParseTable(
const TString& cluster,
const NJson::TJsonValue::TMapType& json,
TSchemaData& data,
TVector<TString>& path) {
for (const auto& [name, _] : ExpectMap(path, json, "columns")) {
data.Tables[cluster][PathString(path)].Columns.emplace_back(name);
}
}
TString Parse(
const TString& cluster,
const NJson::TJsonValue::TMapType& json,
TSchemaData& data,
TVector<TString>& path) {
auto type = Expect(path, json, "type");
if (type == TFolderEntry::Folder) {
ParseFolder(cluster, json, data, path);
return TFolderEntry::Folder;
}
if (type == TFolderEntry::Table) {
ParseTable(cluster, json, data, path);
return TFolderEntry::Table;
}
if (!type.IsString()) {
ythrow yexception() << "Unexpected type: " << type;
}
return type.GetStringSafe();
}
} // namespace
ISimpleSchema::TPtr MakeStaticSimpleSchema(const NJson::TJsonMap& json) {
TSchemaData data;
for (const auto& [cluster, tree] : json.GetMap()) {
TVector<TString> path;
ParseFolder(cluster, tree.GetMapSafe(), data, path);
}
return MakeStaticSimpleSchema(std::move(data));
}
} // namespace NSQLComplete
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