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59 lines
1.5 KiB
C++
59 lines
1.5 KiB
C++
#include <DataTypes/DataTypeDateTime.h>
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#include <DataTypes/Serializations/SerializationDateTime.h>
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#include <Columns/ColumnVector.h>
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#include <Common/assert_cast.h>
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#include <common/DateLUT.h>
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#include <DataTypes/DataTypeFactory.h>
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#include <Formats/FormatSettings.h>
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#include <IO/Operators.h>
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#include <IO/ReadHelpers.h>
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#include <IO/WriteBufferFromString.h>
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#include <IO/WriteHelpers.h>
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#include <IO/parseDateTimeBestEffort.h>
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#include <Parsers/ASTLiteral.h>
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namespace DB
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{
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TimezoneMixin::TimezoneMixin(const String & time_zone_name)
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: has_explicit_time_zone(!time_zone_name.empty()),
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time_zone(DateLUT::instance(time_zone_name)),
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utc_time_zone(DateLUT::instance("UTC"))
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{
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}
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DataTypeDateTime::DataTypeDateTime(const String & time_zone_name)
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: TimezoneMixin(time_zone_name)
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{
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}
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DataTypeDateTime::DataTypeDateTime(const TimezoneMixin & time_zone_)
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: TimezoneMixin(time_zone_)
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{
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}
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String DataTypeDateTime::doGetName() const
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{
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if (!has_explicit_time_zone)
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return "DateTime";
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WriteBufferFromOwnString out;
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out << "DateTime(" << quote << time_zone.getTimeZone() << ")";
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return out.str();
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}
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bool DataTypeDateTime::equals(const IDataType & rhs) const
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{
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/// DateTime with different timezones are equal, because:
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/// "all types with different time zones are equivalent and may be used interchangingly."
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return typeid(rhs) == typeid(*this);
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}
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SerializationPtr DataTypeDateTime::doGetDefaultSerialization() const
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{
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return std::make_shared<SerializationDateTime>(time_zone, utc_time_zone);
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}
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}
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