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https://github.com/ClickHouse/ClickHouse.git
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83 lines
2.7 KiB
C++
83 lines
2.7 KiB
C++
#include "DictionaryFactory.h"
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#include <memory>
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#include "DictionarySourceFactory.h"
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#include "DictionaryStructure.h"
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#include "getDictionaryConfigurationFromAST.h"
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namespace DB
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{
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namespace ErrorCodes
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{
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extern const int LOGICAL_ERROR;
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extern const int EXCESSIVE_ELEMENT_IN_CONFIG;
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extern const int UNKNOWN_ELEMENT_IN_CONFIG;
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}
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void DictionaryFactory::registerLayout(const std::string & layout_type, Creator create_layout, bool is_complex)
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{
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if (!registered_layouts.emplace(layout_type, std::move(create_layout)).second)
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throw Exception("DictionaryFactory: the layout name '" + layout_type + "' is not unique", ErrorCodes::LOGICAL_ERROR);
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layout_complexity[layout_type] = is_complex;
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}
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DictionaryPtr DictionaryFactory::create(
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const std::string & name,
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const Poco::Util::AbstractConfiguration & config,
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const std::string & config_prefix,
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const Context & context,
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bool check_source_config) const
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{
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Poco::Util::AbstractConfiguration::Keys keys;
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const auto & layout_prefix = config_prefix + ".layout";
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config.keys(layout_prefix, keys);
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if (keys.size() != 1)
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throw Exception{name + ": element dictionary.layout should have exactly one child element",
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ErrorCodes::EXCESSIVE_ELEMENT_IN_CONFIG};
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const DictionaryStructure dict_struct{config, config_prefix + ".structure"};
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DictionarySourcePtr source_ptr = DictionarySourceFactory::instance().create(name, config, config_prefix + ".source", dict_struct, context, check_source_config);
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const auto & layout_type = keys.front();
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{
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const auto found = registered_layouts.find(layout_type);
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if (found != registered_layouts.end())
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{
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const auto & layout_creator = found->second;
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return layout_creator(name, dict_struct, config, config_prefix, std::move(source_ptr));
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}
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}
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throw Exception{name + ": unknown dictionary layout type: " + layout_type, ErrorCodes::UNKNOWN_ELEMENT_IN_CONFIG};
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}
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DictionaryPtr DictionaryFactory::create(const std::string & name, const ASTCreateQuery & ast, const Context & context) const
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{
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auto configuration = getDictionaryConfigurationFromAST(ast);
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return DictionaryFactory::create(name, *configuration, "dictionary", context, true);
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}
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bool DictionaryFactory::isComplex(const std::string & layout_type) const
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{
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auto found = layout_complexity.find(layout_type);
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if (found != layout_complexity.end())
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return found->second;
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throw Exception{"Unknown dictionary layout type: " + layout_type, ErrorCodes::UNKNOWN_ELEMENT_IN_CONFIG};
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}
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DictionaryFactory & DictionaryFactory::instance()
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{
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static DictionaryFactory ret;
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return ret;
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}
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}
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