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https://github.com/ClickHouse/ClickHouse.git
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647cd1b0eb
Mysql and Clickhouse sources are not currently checked and will always say they are modified. Reload periods are not currently checked.
357 lines
11 KiB
C++
357 lines
11 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 <DB/Common/HashTable/HashMap.h>
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#include <statdaemons/ext/range.hpp>
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#include <statdaemons/ext/memory.hpp>
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#include <Poco/Util/AbstractConfiguration.h>
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namespace DB
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{
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class HashedDictionary final : public IDictionary
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{
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public:
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HashedDictionary(const std::string & name, const DictionaryStructure & dict_struct,
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const Poco::Util::AbstractConfiguration & config,
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const std::string & config_prefix, DictionarySourcePtr source_ptr)
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: name{name}, source_ptr{std::move(source_ptr)}
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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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auto stream = this->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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std::string getName() const override { return name; }
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std::string getTypeName() const override { return "HashedDictionary"; }
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bool isCached() const override { return false; }
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const IDictionarySource * const getSource() const override { return source_ptr.get(); }
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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:
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{
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const auto it = attr->uint8_map->find(id);
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return it != attr->uint8_map->end() ? it->second : attr->uint8_null_value;
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}
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case attribute_type::uint16:
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{
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const auto it = attr->uint16_map->find(id);
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return it != attr->uint16_map->end() ? it->second : attr->uint16_null_value;
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}
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case attribute_type::uint32:
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{
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const auto it = attr->uint32_map->find(id);
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return it != attr->uint32_map->end() ? it->second : attr->uint32_null_value;
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}
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case attribute_type::uint64:
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{
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const auto it = attr->uint64_map->find(id);
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return it != attr->uint64_map->end() ? it->second : attr->uint64_null_value;
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}
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case attribute_type::int8:
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{
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const auto it = attr->int8_map->find(id);
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return it != attr->int8_map->end() ? it->second : attr->int8_null_value;
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}
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case attribute_type::int16:
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{
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const auto it = attr->int16_map->find(id);
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return it != attr->int16_map->end() ? it->second : attr->int16_null_value;
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}
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case attribute_type::int32:
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{
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const auto it = attr->int32_map->find(id);
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return it != attr->int32_map->end() ? it->second : attr->int32_null_value;
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}
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case attribute_type::int64:
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{
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const auto it = attr->int64_map->find(id);
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return it != attr->int64_map->end() ? it->second : attr->int64_null_value;
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}
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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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const auto it = attribute.LC_TYPE##_map->find(id);\
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if (it != attribute.LC_TYPE##_map->end())\
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return it->second;\
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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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const auto it = attribute.LC_NAME##_map->find(id);\
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if (it != attribute.LC_NAME##_map->end())\
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return it->second;\
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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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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<HashMap<UInt64, UInt8>> uint8_map;
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std::unique_ptr<HashMap<UInt64, UInt16>> uint16_map;
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std::unique_ptr<HashMap<UInt64, UInt32>> uint32_map;
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std::unique_ptr<HashMap<UInt64, UInt64>> uint64_map;
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std::unique_ptr<HashMap<UInt64, Int8>> int8_map;
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std::unique_ptr<HashMap<UInt64, Int16>> int16_map;
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std::unique_ptr<HashMap<UInt64, Int32>> int32_map;
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std::unique_ptr<HashMap<UInt64, Int64>> int64_map;
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std::unique_ptr<HashMap<UInt64, Float32>> float32_map;
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std::unique_ptr<HashMap<UInt64, Float64>> float64_map;
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std::unique_ptr<Arena> string_arena;
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std::unique_ptr<HashMap<UInt64, StringRef>> string_map;
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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_map.reset(new HashMap<UInt64, UInt8>);
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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_map.reset(new HashMap<UInt64, UInt16>);
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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_map.reset(new HashMap<UInt64, UInt32>);
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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_map.reset(new HashMap<UInt64, UInt64>);
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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_map.reset(new HashMap<UInt64, Int8>);
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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_map.reset(new HashMap<UInt64, Int16>);
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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_map.reset(new HashMap<UInt64, Int32>);
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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_map.reset(new HashMap<UInt64, Int64>);
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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_map.reset(new HashMap<UInt64, Float32>);
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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_map.reset(new HashMap<UInt64, Float64>);
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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_map.reset(new HashMap<UInt64, StringRef>);
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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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switch (attribute.type)
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{
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case attribute_type::uint8:
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{
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attribute.uint8_map->insert({ 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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attribute.uint16_map->insert({ 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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attribute.uint32_map->insert({ 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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attribute.uint64_map->insert({ 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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attribute.int8_map->insert({ 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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attribute.int16_map->insert({ 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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attribute.int32_map->insert({ 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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attribute.int64_map->insert({ 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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attribute.float32_map->insert({ 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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attribute.float64_map->insert({ 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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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_map->insert({ 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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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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const DictionarySourcePtr source_ptr;
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};
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}
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