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https://github.com/ClickHouse/ClickHouse.git
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69 lines
2.8 KiB
C++
69 lines
2.8 KiB
C++
#include "ExternalResultDescription.h"
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#include <DataTypes/DataTypeDate.h>
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#include <DataTypes/DataTypeDateTime.h>
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#include <DataTypes/DataTypeNullable.h>
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#include <DataTypes/DataTypeString.h>
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#include <DataTypes/DataTypeUUID.h>
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#include <DataTypes/DataTypesNumber.h>
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#include <Common/typeid_cast.h>
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#include <ext/range.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 UNKNOWN_TYPE;
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}
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void ExternalResultDescription::init(const Block & sample_block_)
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{
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sample_block = sample_block_;
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types.reserve(sample_block.columns());
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for (auto & elem : sample_block)
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{
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/// If default value for column was not provided, use default from data type.
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if (elem.column->empty())
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elem.column = elem.type->createColumnConstWithDefaultValue(1)->convertToFullColumnIfConst();
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bool is_nullable = elem.type->isNullable();
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DataTypePtr type_not_nullable = removeNullable(elem.type);
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const IDataType * type = type_not_nullable.get();
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if (typeid_cast<const DataTypeUInt8 *>(type))
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types.emplace_back(ValueType::vtUInt8, is_nullable);
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else if (typeid_cast<const DataTypeUInt16 *>(type))
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types.emplace_back(ValueType::vtUInt16, is_nullable);
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else if (typeid_cast<const DataTypeUInt32 *>(type))
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types.emplace_back(ValueType::vtUInt32, is_nullable);
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else if (typeid_cast<const DataTypeUInt64 *>(type))
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types.emplace_back(ValueType::vtUInt64, is_nullable);
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else if (typeid_cast<const DataTypeInt8 *>(type))
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types.emplace_back(ValueType::vtInt8, is_nullable);
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else if (typeid_cast<const DataTypeInt16 *>(type))
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types.emplace_back(ValueType::vtInt16, is_nullable);
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else if (typeid_cast<const DataTypeInt32 *>(type))
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types.emplace_back(ValueType::vtInt32, is_nullable);
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else if (typeid_cast<const DataTypeInt64 *>(type))
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types.emplace_back(ValueType::vtInt64, is_nullable);
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else if (typeid_cast<const DataTypeFloat32 *>(type))
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types.emplace_back(ValueType::vtFloat32, is_nullable);
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else if (typeid_cast<const DataTypeFloat64 *>(type))
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types.emplace_back(ValueType::vtFloat64, is_nullable);
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else if (typeid_cast<const DataTypeString *>(type))
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types.emplace_back(ValueType::vtString, is_nullable);
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else if (typeid_cast<const DataTypeDate *>(type))
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types.emplace_back(ValueType::vtDate, is_nullable);
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else if (typeid_cast<const DataTypeDateTime *>(type))
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types.emplace_back(ValueType::vtDateTime, is_nullable);
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else if (typeid_cast<const DataTypeUUID *>(type))
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types.emplace_back(ValueType::vtUUID, is_nullable);
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else
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throw Exception{"Unsupported type " + type->getName(), ErrorCodes::UNKNOWN_TYPE};
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}
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}
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}
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