mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-09-23 18:20:50 +00:00
384 lines
13 KiB
C++
384 lines
13 KiB
C++
#pragma once
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#include <DB/Dictionaries/IDictionary.h>
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#include <DB/Dictionaries/IDictionarySource.h>
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#include <DB/Dictionaries/DictionarySourceFactory.h>
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#include <DB/Dictionaries/DictionaryStructure.h>
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#include <statdaemons/ext/range.hpp>
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#include <Poco/Util/AbstractConfiguration.h>
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#include <vector>
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namespace DB
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{
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const auto initial_array_size = 1024;
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const auto max_array_size = 500000;
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class FlatDictionary final : public IDictionary
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{
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public:
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FlatDictionary(const std::string & name, const DictionaryStructure & dict_struct,
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DictionarySourcePtr source_ptr, const DictionaryLifetime dict_lifetime)
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: name{name}, dict_struct(dict_struct),
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source_ptr{std::move(source_ptr)}, dict_lifetime(dict_lifetime)
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{
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createAttributes();
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loadData();
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}
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FlatDictionary(const FlatDictionary & other)
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: FlatDictionary{other.name, other.dict_struct, other.source_ptr->clone(), other.dict_lifetime}
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{}
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std::string getName() const override { return name; }
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std::string getTypeName() const override { return "FlatDictionary"; }
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bool isCached() const override { return false; }
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DictionaryPtr clone() const override { return ext::make_unique<FlatDictionary>(*this); }
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const IDictionarySource * const getSource() const override { return source_ptr.get(); }
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const DictionaryLifetime & getLifetime() const override { return dict_lifetime; }
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bool hasHierarchy() const override { return hierarchical_attribute; }
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id_t toParent(const id_t id) const override
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{
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const auto attr = hierarchical_attribute;
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switch (hierarchical_attribute->type)
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{
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case attribute_type::uint8: return id < attr->uint8_array->size() ? (*attr->uint8_array)[id] : attr->uint8_null_value;
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case attribute_type::uint16: return id < attr->uint16_array->size() ? (*attr->uint16_array)[id] : attr->uint16_null_value;
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case attribute_type::uint32: return id < attr->uint32_array->size() ? (*attr->uint32_array)[id] : attr->uint32_null_value;
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case attribute_type::uint64: return id < attr->uint64_array->size() ? (*attr->uint64_array)[id] : attr->uint64_null_value;
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case attribute_type::int8: return id < attr->int8_array->size() ? (*attr->int8_array)[id] : attr->int8_null_value;
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case attribute_type::int16: return id < attr->int16_array->size() ? (*attr->int16_array)[id] : attr->int16_null_value;
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case attribute_type::int32: return id < attr->int32_array->size() ? (*attr->int32_array)[id] : attr->int32_null_value;
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case attribute_type::int64: return id < attr->int64_array->size() ? (*attr->int64_array)[id] : attr->int64_null_value;
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case attribute_type::float32:
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case attribute_type::float64:
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case attribute_type::string:
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break;
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}
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throw Exception{
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"Hierarchical attribute has non-integer type " + toString(hierarchical_attribute->type),
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ErrorCodes::TYPE_MISMATCH
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};
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}
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#define DECLARE_SAFE_GETTER(TYPE, NAME, LC_TYPE) \
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TYPE get##NAME(const std::string & attribute_name, const id_t id) const override\
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{\
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const auto idx = getAttributeIndex(attribute_name);\
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const auto & attribute = attributes[idx];\
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if (attribute.type != attribute_type::LC_TYPE)\
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throw Exception{\
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"Type mismatch: attribute " + attribute_name + " has type " + toString(attribute.type),\
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ErrorCodes::TYPE_MISMATCH\
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};\
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if (id < attribute.LC_TYPE##_array->size())\
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return (*attribute.LC_TYPE##_array)[id];\
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return attribute.LC_TYPE##_null_value;\
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}
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DECLARE_SAFE_GETTER(UInt8, UInt8, uint8)
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DECLARE_SAFE_GETTER(UInt16, UInt16, uint16)
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DECLARE_SAFE_GETTER(UInt32, UInt32, uint32)
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DECLARE_SAFE_GETTER(UInt64, UInt64, uint64)
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DECLARE_SAFE_GETTER(Int8, Int8, int8)
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DECLARE_SAFE_GETTER(Int16, Int16, int16)
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DECLARE_SAFE_GETTER(Int32, Int32, int32)
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DECLARE_SAFE_GETTER(Int64, Int64, int64)
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DECLARE_SAFE_GETTER(Float32, Float32, float32)
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DECLARE_SAFE_GETTER(Float64, Float64, float64)
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DECLARE_SAFE_GETTER(StringRef, String, string)
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#undef DECLARE_SAFE_GETTER
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std::size_t getAttributeIndex(const std::string & attribute_name) const override
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{
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const auto it = attribute_index_by_name.find(attribute_name);
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if (it == std::end(attribute_index_by_name))
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throw Exception{
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"No such attribute '" + attribute_name + "'",
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ErrorCodes::BAD_ARGUMENTS
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};
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return it->second;
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}
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#define DECLARE_TYPE_CHECKER(NAME, LC_NAME)\
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bool is##NAME(const std::size_t attribute_idx) const override\
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{\
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return attributes[attribute_idx].type == attribute_type::LC_NAME;\
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}
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DECLARE_TYPE_CHECKER(UInt8, uint8)
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DECLARE_TYPE_CHECKER(UInt16, uint16)
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DECLARE_TYPE_CHECKER(UInt32, uint32)
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DECLARE_TYPE_CHECKER(UInt64, uint64)
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DECLARE_TYPE_CHECKER(Int8, int8)
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DECLARE_TYPE_CHECKER(Int16, int16)
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DECLARE_TYPE_CHECKER(Int32, int32)
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DECLARE_TYPE_CHECKER(Int64, int64)
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DECLARE_TYPE_CHECKER(Float32, float32)
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DECLARE_TYPE_CHECKER(Float64, float64)
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DECLARE_TYPE_CHECKER(String, string)
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#undef DECLARE_TYPE_CHECKER
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#define DECLARE_UNSAFE_GETTER(TYPE, NAME, LC_NAME)\
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TYPE get##NAME##Unsafe(const std::size_t attribute_idx, const id_t id) const override\
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{\
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const auto & attribute = attributes[attribute_idx];\
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if (id < attribute.LC_NAME##_array->size())\
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return (*attribute.LC_NAME##_array)[id];\
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return attribute.LC_NAME##_null_value;\
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}
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DECLARE_UNSAFE_GETTER(UInt8, UInt8, uint8)
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DECLARE_UNSAFE_GETTER(UInt16, UInt16, uint16)
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DECLARE_UNSAFE_GETTER(UInt32, UInt32, uint32)
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DECLARE_UNSAFE_GETTER(UInt64, UInt64, uint64)
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DECLARE_UNSAFE_GETTER(Int8, Int8, int8)
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DECLARE_UNSAFE_GETTER(Int16, Int16, int16)
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DECLARE_UNSAFE_GETTER(Int32, Int32, int32)
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DECLARE_UNSAFE_GETTER(Int64, Int64, int64)
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DECLARE_UNSAFE_GETTER(Float32, Float32, float32)
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DECLARE_UNSAFE_GETTER(Float64, Float64, float64)
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DECLARE_UNSAFE_GETTER(StringRef, String, string)
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#undef DECLARE_UNSAFE_GETTER
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private:
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struct attribute_t
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{
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attribute_type type;
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UInt8 uint8_null_value;
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UInt16 uint16_null_value;
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UInt32 uint32_null_value;
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UInt64 uint64_null_value;
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Int8 int8_null_value;
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Int16 int16_null_value;
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Int32 int32_null_value;
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Int64 int64_null_value;
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Float32 float32_null_value;
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Float64 float64_null_value;
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String string_null_value;
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std::unique_ptr<PODArray<UInt8>> uint8_array;
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std::unique_ptr<PODArray<UInt16>> uint16_array;
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std::unique_ptr<PODArray<UInt32>> uint32_array;
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std::unique_ptr<PODArray<UInt64>> uint64_array;
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std::unique_ptr<PODArray<Int8>> int8_array;
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std::unique_ptr<PODArray<Int16>> int16_array;
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std::unique_ptr<PODArray<Int32>> int32_array;
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std::unique_ptr<PODArray<Int64>> int64_array;
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std::unique_ptr<PODArray<Float32>> float32_array;
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std::unique_ptr<PODArray<Float64>> float64_array;
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std::unique_ptr<Arena> string_arena;
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std::unique_ptr<PODArray<StringRef>> string_array;
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};
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void createAttributes()
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{
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const auto size = dict_struct.attributes.size();
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attributes.reserve(size);
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for (const auto & attribute : dict_struct.attributes)
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{
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attribute_index_by_name.emplace(attribute.name, attributes.size());
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attributes.push_back(std::move(createAttributeWithType(getAttributeTypeByName(attribute.type),
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attribute.null_value)));
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if (attribute.hierarchical)
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hierarchical_attribute = &attributes.back();
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}
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}
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void loadData()
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{
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auto stream = source_ptr->loadAll();
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while (const auto block = stream->read())
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{
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const auto & id_column = *block.getByPosition(0).column;
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for (const auto attribute_idx : ext::range(0, attributes.size()))
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{
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const auto & attribute_column = *block.getByPosition(attribute_idx + 1).column;
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auto & attribute = attributes[attribute_idx];
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for (const auto row_idx : ext::range(0, id_column.size()))
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setAttributeValue(attribute, id_column[row_idx].get<UInt64>(), attribute_column[row_idx]);
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}
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}
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}
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attribute_t createAttributeWithType(const attribute_type type, const std::string & null_value)
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{
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attribute_t attr{type};
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switch (type)
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{
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case attribute_type::uint8:
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attr.uint8_null_value = DB::parse<UInt8>(null_value);
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attr.uint8_array.reset(new PODArray<UInt8>);
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attr.uint8_array->resize_fill(initial_array_size, attr.uint8_null_value);
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break;
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case attribute_type::uint16:
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attr.uint16_null_value = DB::parse<UInt16>(null_value);
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attr.uint16_array.reset(new PODArray<UInt16>);
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attr.uint16_array->resize_fill(initial_array_size, attr.uint16_null_value);
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break;
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case attribute_type::uint32:
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attr.uint32_null_value = DB::parse<UInt32>(null_value);
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attr.uint32_array.reset(new PODArray<UInt32>);
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attr.uint32_array->resize_fill(initial_array_size, attr.uint32_null_value);
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break;
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case attribute_type::uint64:
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attr.uint64_null_value = DB::parse<UInt64>(null_value);
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attr.uint64_array.reset(new PODArray<UInt64>);
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attr.uint64_array->resize_fill(initial_array_size, attr.uint64_null_value);
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break;
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case attribute_type::int8:
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attr.int8_null_value = DB::parse<Int8>(null_value);
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attr.int8_array.reset(new PODArray<Int8>);
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attr.int8_array->resize_fill(initial_array_size, attr.int8_null_value);
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break;
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case attribute_type::int16:
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attr.int16_null_value = DB::parse<Int16>(null_value);
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attr.int16_array.reset(new PODArray<Int16>);
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attr.int16_array->resize_fill(initial_array_size, attr.int16_null_value);
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break;
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case attribute_type::int32:
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attr.int32_null_value = DB::parse<Int32>(null_value);
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attr.int32_array.reset(new PODArray<Int32>);
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attr.int32_array->resize_fill(initial_array_size, attr.int32_null_value);
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break;
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case attribute_type::int64:
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attr.int64_null_value = DB::parse<Int64>(null_value);
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attr.int64_array.reset(new PODArray<Int64>);
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attr.int64_array->resize_fill(initial_array_size, attr.int64_null_value);
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break;
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case attribute_type::float32:
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attr.float32_null_value = DB::parse<Float32>(null_value);
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attr.float32_array.reset(new PODArray<Float32>);
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attr.float32_array->resize_fill(initial_array_size, attr.float32_null_value);
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break;
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case attribute_type::float64:
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attr.float64_null_value = DB::parse<Float64>(null_value);
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attr.float64_array.reset(new PODArray<Float64>);
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attr.float64_array->resize_fill(initial_array_size, attr.float64_null_value);
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break;
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case attribute_type::string:
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attr.string_null_value = null_value;
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attr.string_arena.reset(new Arena);
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attr.string_array.reset(new PODArray<StringRef>);
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attr.string_array->resize_fill(initial_array_size, attr.string_null_value);
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break;
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}
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return attr;
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}
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void setAttributeValue(attribute_t & attribute, const id_t id, const Field & value)
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{
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if (id >= max_array_size)
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throw Exception{
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"Identifier should be less than " + toString(max_array_size),
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ErrorCodes::ARGUMENT_OUT_OF_BOUND
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};
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switch (attribute.type)
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{
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case attribute_type::uint8:
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{
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if (id >= attribute.uint8_array->size())
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attribute.uint8_array->resize_fill(id, attribute.uint8_null_value);
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(*attribute.uint8_array)[id] = value.get<UInt64>();
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break;
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}
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case attribute_type::uint16:
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{
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if (id >= attribute.uint16_array->size())
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attribute.uint16_array->resize_fill(id, attribute.uint16_null_value);
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(*attribute.uint16_array)[id] = value.get<UInt64>();
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break;
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}
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case attribute_type::uint32:
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{
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if (id >= attribute.uint32_array->size())
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attribute.uint32_array->resize_fill(id, attribute.uint32_null_value);
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(*attribute.uint32_array)[id] = value.get<UInt64>();
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break;
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}
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case attribute_type::uint64:
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{
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if (id >= attribute.uint64_array->size())
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attribute.uint64_array->resize_fill(id, attribute.uint64_null_value);
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(*attribute.uint64_array)[id] = value.get<UInt64>();
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break;
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}
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case attribute_type::int8:
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{
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if (id >= attribute.int8_array->size())
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attribute.int8_array->resize_fill(id, attribute.int8_null_value);
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(*attribute.int8_array)[id] = value.get<Int64>();
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break;
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}
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case attribute_type::int16:
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{
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if (id >= attribute.int16_array->size())
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attribute.int16_array->resize_fill(id, attribute.int16_null_value);
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(*attribute.int16_array)[id] = value.get<Int64>();
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break;
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}
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case attribute_type::int32:
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{
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if (id >= attribute.int32_array->size())
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attribute.int32_array->resize_fill(id, attribute.int32_null_value);
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(*attribute.int32_array)[id] = value.get<Int64>();
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break;
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}
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case attribute_type::int64:
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{
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if (id >= attribute.int64_array->size())
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attribute.int64_array->resize_fill(id, attribute.int64_null_value);
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(*attribute.int64_array)[id] = value.get<Int64>();
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break;
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}
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case attribute_type::float32:
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{
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if (id >= attribute.float32_array->size())
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attribute.float32_array->resize_fill(id, attribute.float32_null_value);
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(*attribute.float32_array)[id] = value.get<Float64>();
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break;
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}
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case attribute_type::float64:
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{
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if (id >= attribute.float64_array->size())
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attribute.float64_array->resize_fill(id, attribute.float64_null_value);
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(*attribute.float64_array)[id] = value.get<Float64>();
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break;
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}
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case attribute_type::string:
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{
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if (id >= attribute.string_array->size())
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attribute.string_array->resize_fill(id, attribute.string_null_value);
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const auto & string = value.get<String>();
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const auto string_in_arena = attribute.string_arena->insert(string.data(), string.size());
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(*attribute.string_array)[id] = StringRef{string_in_arena, string.size()};
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break;
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}
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};
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}
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const std::string name;
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const DictionaryStructure dict_struct;
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const DictionarySourcePtr source_ptr;
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const DictionaryLifetime dict_lifetime;
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std::map<std::string, std::size_t> attribute_index_by_name;
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std::vector<attribute_t> attributes;
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const attribute_t * hierarchical_attribute = nullptr;
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};
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}
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