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#include "RangeHashedDictionary.h"
#include <Dictionaries/DictionarySource.h>
#include <Dictionaries/DictionaryFactory.h>
namespace DB
{
namespace ErrorCodes
{
extern const int UNSUPPORTED_METHOD;
extern const int BAD_ARGUMENTS;
}
template <DictionaryKeyType dictionary_key_type>
static DictionaryPtr createRangeHashedDictionary(const std::string & full_name,
const DictionaryStructure & dict_struct,
const Poco::Util::AbstractConfiguration & config,
const std::string & config_prefix,
DictionarySourcePtr source_ptr)
{
static constexpr auto layout_name = dictionary_key_type == DictionaryKeyType::Simple ? "range_hashed" : "complex_key_range_hashed";
if constexpr (dictionary_key_type == DictionaryKeyType::Simple)
{
if (dict_struct.key)
throw Exception(ErrorCodes::UNSUPPORTED_METHOD, "'key' is not supported for dictionary of layout 'range_hashed'");
}
else
{
if (dict_struct.id)
throw Exception(ErrorCodes::UNSUPPORTED_METHOD, "'id' is not supported for dictionary of layout 'complex_key_range_hashed'");
}
if (!dict_struct.range_min || !dict_struct.range_max)
throw Exception(
ErrorCodes::BAD_ARGUMENTS,
"{}: dictionary of layout '{}' requires .structure.range_min and .structure.range_max",
full_name,
layout_name);
const auto dict_id = StorageID::fromDictionaryConfig(config, config_prefix);
const DictionaryLifetime dict_lifetime{config, config_prefix + ".lifetime"};
const bool require_nonempty = config.getBool(config_prefix + ".require_nonempty", false);
String dictionary_layout_prefix = config_prefix + ".layout." + layout_name;
const bool convert_null_range_bound_to_open = config.getBool(dictionary_layout_prefix + ".convert_null_range_bound_to_open", true);
String range_lookup_strategy = config.getString(dictionary_layout_prefix + ".range_lookup_strategy", "min");
RangeHashedDictionaryLookupStrategy lookup_strategy = RangeHashedDictionaryLookupStrategy::min;
if (range_lookup_strategy == "min")
lookup_strategy = RangeHashedDictionaryLookupStrategy::min;
else if (range_lookup_strategy == "max")
lookup_strategy = RangeHashedDictionaryLookupStrategy::max;
RangeHashedDictionaryConfiguration configuration
{
.convert_null_range_bound_to_open = convert_null_range_bound_to_open,
.lookup_strategy = lookup_strategy,
.require_nonempty = require_nonempty
};
DictionaryPtr result = std::make_unique<RangeHashedDictionary<dictionary_key_type>>(
dict_id,
dict_struct,
std::move(source_ptr),
dict_lifetime,
configuration);
return result;
}
void registerDictionaryRangeHashed(DictionaryFactory & factory)
{
auto create_layout_simple = [=](const std::string & full_name,
const DictionaryStructure & dict_struct,
const Poco::Util::AbstractConfiguration & config,
const std::string & config_prefix,
DictionarySourcePtr source_ptr,
ContextPtr /* global_context */,
bool /*created_from_ddl*/) -> DictionaryPtr
{
return createRangeHashedDictionary<DictionaryKeyType::Simple>(full_name, dict_struct, config, config_prefix, std::move(source_ptr));
};
factory.registerLayout("range_hashed", create_layout_simple, false);
auto create_layout_complex = [=](const std::string & full_name,
const DictionaryStructure & dict_struct,
const Poco::Util::AbstractConfiguration & config,
const std::string & config_prefix,
DictionarySourcePtr source_ptr,
ContextPtr /* context */,
bool /*created_from_ddl*/) -> DictionaryPtr
{
return createRangeHashedDictionary<DictionaryKeyType::Complex>(full_name, dict_struct, config, config_prefix, std::move(source_ptr));
};
factory.registerLayout("complex_key_range_hashed", create_layout_complex, true);
}
}
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