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73 lines
2.1 KiB
C++
73 lines
2.1 KiB
C++
#include <Columns/ColumnString.h>
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#include <Columns/ColumnsNumber.h>
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#include <DataTypes/DataTypeString.h>
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#include <DataTypes/DataTypesNumber.h>
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#include <DataStreams/OneBlockInputStream.h>
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#include <Interpreters/Settings.h>
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#include <Storages/System/StorageSystemSettings.h>
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namespace DB
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{
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StorageSystemSettings::StorageSystemSettings(const std::string & name_)
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: name(name_)
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, columns{
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{ "name", std::make_shared<DataTypeString>() },
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{ "value", std::make_shared<DataTypeString>() },
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{ "changed", std::make_shared<DataTypeUInt8>() },
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}
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{
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}
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StoragePtr StorageSystemSettings::create(const std::string & name_)
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{
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return make_shared(name_);
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}
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BlockInputStreams StorageSystemSettings::read(
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const Names & column_names,
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ASTPtr query,
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const Context & context,
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const Settings & settings,
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QueryProcessingStage::Enum & processed_stage,
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const size_t max_block_size,
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const unsigned threads)
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{
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check(column_names);
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processed_stage = QueryProcessingStage::FetchColumns;
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ColumnWithTypeAndName col_name{std::make_shared<ColumnString>(), std::make_shared<DataTypeString>(), "name"};
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ColumnWithTypeAndName col_value{std::make_shared<ColumnString>(), std::make_shared<DataTypeString>(), "value"};
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ColumnWithTypeAndName col_changed{std::make_shared<ColumnUInt8>(), std::make_shared<DataTypeUInt8>(), "changed"};
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#define ADD_SETTING(TYPE, NAME, DEFAULT) \
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col_name.column->insert(String(#NAME)); \
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col_value.column->insert(settings.NAME.toString()); \
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col_changed.column->insert(UInt64(settings.NAME.changed));
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APPLY_FOR_SETTINGS(ADD_SETTING)
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#undef ADD_SETTING
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#define ADD_LIMIT(TYPE, NAME, DEFAULT) \
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col_name.column->insert(String(#NAME)); \
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col_value.column->insert(settings.limits.NAME.toString()); \
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col_changed.column->insert(UInt64(settings.limits.NAME.changed));
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APPLY_FOR_LIMITS(ADD_LIMIT)
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#undef ADD_LIMIT
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Block block{
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col_name,
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col_value,
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col_changed,
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};
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return BlockInputStreams(1, std::make_shared<OneBlockInputStream>(block));
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}
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}
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