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#pragma once
#include <base/types.h>
#include <mutex>
#include <unordered_set>
namespace DB
{
class KnownObjectNames
{
public:
bool exists(const String & name) const;
void add(const String & name, bool case_insensitive = false);
private:
mutable std::mutex mutex;
std::unordered_set<String> names;
std::unordered_set<String> case_insensitive_names;
};
class KnownTableFunctionNames : public KnownObjectNames
{
public:
static KnownTableFunctionNames & instance();
};
class KnownFormatNames : public KnownObjectNames
{
public:
static KnownFormatNames & instance();
};
}
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