mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-30 19:42:00 +00:00
87 lines
1.9 KiB
C++
87 lines
1.9 KiB
C++
#pragma once
|
|
|
|
#include <DB/Core/Field.h>
|
|
#include <DB/Core/StringRef.h>
|
|
#include <Poco/Util/XMLConfiguration.h>
|
|
#include <DB/Common/PODArray.h>
|
|
#include <memory>
|
|
#include <chrono>
|
|
|
|
namespace DB
|
|
{
|
|
|
|
class IDictionarySource;
|
|
|
|
class IDictionaryBase;
|
|
using DictionaryPtr = std::unique_ptr<IDictionaryBase>;
|
|
|
|
class DictionaryLifetime;
|
|
class DictionaryStructure;
|
|
class ColumnString;
|
|
|
|
struct IDictionaryBase
|
|
{
|
|
using id_t = std::uint64_t;
|
|
|
|
virtual std::exception_ptr getCreationException() const = 0;
|
|
|
|
virtual std::string getName() const = 0;
|
|
|
|
virtual std::string getTypeName() const = 0;
|
|
|
|
virtual std::size_t getBytesAllocated() const = 0;
|
|
|
|
virtual std::size_t getQueryCount() const = 0;
|
|
|
|
virtual double getHitRate() const = 0;
|
|
|
|
virtual std::size_t getElementCount() const = 0;
|
|
|
|
virtual double getLoadFactor() const = 0;
|
|
|
|
virtual bool isCached() const = 0;
|
|
virtual DictionaryPtr clone() const = 0;
|
|
|
|
virtual const IDictionarySource * getSource() const = 0;
|
|
|
|
virtual const DictionaryLifetime & getLifetime() const = 0;
|
|
|
|
virtual const DictionaryStructure & getStructure() const = 0;
|
|
|
|
virtual std::chrono::time_point<std::chrono::system_clock> getCreationTime() const = 0;
|
|
|
|
virtual bool isInjective(const std::string & attribute_name) const = 0;
|
|
|
|
virtual ~IDictionaryBase() = default;
|
|
};
|
|
|
|
struct IDictionary : IDictionaryBase
|
|
{
|
|
virtual bool hasHierarchy() const = 0;
|
|
|
|
virtual void toParent(const PODArray<id_t> & ids, PODArray<id_t> & out) const = 0;
|
|
|
|
virtual void has(const PODArray<id_t> & ids, PODArray<UInt8> & out) const = 0;
|
|
|
|
/// do not call unless you ensure that hasHierarchy() returns true
|
|
id_t toParent(id_t id) const
|
|
{
|
|
const PODArray<UInt64> ids(1, id);
|
|
PODArray<UInt64> out(1);
|
|
|
|
toParent(ids, out);
|
|
|
|
return out.front();
|
|
}
|
|
|
|
bool in(id_t child_id, const id_t ancestor_id) const
|
|
{
|
|
while (child_id != 0 && child_id != ancestor_id)
|
|
child_id = toParent(child_id);
|
|
|
|
return child_id != 0;
|
|
}
|
|
};
|
|
|
|
}
|