mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-09-24 18:50:49 +00:00
336 lines
11 KiB
C++
336 lines
11 KiB
C++
#include <IO/ReadBuffer.h>
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#include <IO/WriteBuffer.h>
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#include <IO/ReadHelpers.h>
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#include <IO/WriteHelpers.h>
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#include <Core/Field.h>
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#include <Core/DecimalComparison.h>
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#include <Common/FieldVisitors.h>
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namespace DB
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{
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void readBinary(Array & x, ReadBuffer & buf)
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{
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size_t size;
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UInt8 type;
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DB::readBinary(type, buf);
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DB::readBinary(size, buf);
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for (size_t index = 0; index < size; ++index)
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{
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switch (type)
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{
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case Field::Types::Null:
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{
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x.push_back(DB::Field());
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break;
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}
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case Field::Types::UInt64:
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{
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UInt64 value;
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DB::readVarUInt(value, buf);
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x.push_back(value);
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break;
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}
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case Field::Types::UInt128:
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{
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UInt128 value;
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DB::readBinary(value, buf);
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x.push_back(value);
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break;
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}
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case Field::Types::Int64:
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{
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Int64 value;
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DB::readVarInt(value, buf);
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x.push_back(value);
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break;
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}
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case Field::Types::Float64:
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{
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Float64 value;
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DB::readFloatBinary(value, buf);
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x.push_back(value);
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break;
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}
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case Field::Types::String:
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{
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std::string value;
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DB::readStringBinary(value, buf);
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x.push_back(value);
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break;
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}
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case Field::Types::Array:
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{
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Array value;
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DB::readBinary(value, buf);
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x.push_back(value);
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break;
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}
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case Field::Types::Tuple:
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{
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Tuple value;
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DB::readBinary(value, buf);
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x.push_back(value);
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break;
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}
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case Field::Types::AggregateFunctionState:
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{
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AggregateFunctionStateData value;
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DB::readStringBinary(value.name, buf);
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DB::readStringBinary(value.data, buf);
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x.push_back(value);
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break;
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}
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}
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}
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}
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void writeBinary(const Array & x, WriteBuffer & buf)
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{
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UInt8 type = Field::Types::Null;
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size_t size = x.size();
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if (size)
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type = x.front().getType();
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DB::writeBinary(type, buf);
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DB::writeBinary(size, buf);
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for (const auto & elem : x)
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{
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switch (type)
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{
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case Field::Types::Null: break;
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case Field::Types::UInt64:
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{
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DB::writeVarUInt(get<UInt64>(elem), buf);
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break;
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}
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case Field::Types::UInt128:
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{
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DB::writeBinary(get<UInt128>(elem), buf);
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break;
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}
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case Field::Types::Int64:
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{
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DB::writeVarInt(get<Int64>(elem), buf);
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break;
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}
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case Field::Types::Float64:
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{
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DB::writeFloatBinary(get<Float64>(elem), buf);
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break;
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}
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case Field::Types::String:
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{
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DB::writeStringBinary(get<std::string>(elem), buf);
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break;
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}
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case Field::Types::Array:
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{
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DB::writeBinary(get<Array>(elem), buf);
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break;
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}
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case Field::Types::Tuple:
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{
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DB::writeBinary(get<Tuple>(elem), buf);
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break;
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}
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case Field::Types::AggregateFunctionState:
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{
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DB::writeStringBinary(elem.get<AggregateFunctionStateData>().name, buf);
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DB::writeStringBinary(elem.get<AggregateFunctionStateData>().data, buf);
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break;
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}
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}
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}
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}
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void writeText(const Array & x, WriteBuffer & buf)
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{
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DB::String res = applyVisitor(DB::FieldVisitorToString(), DB::Field(x));
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buf.write(res.data(), res.size());
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}
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void readBinary(Tuple & x, ReadBuffer & buf)
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{
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size_t size;
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DB::readBinary(size, buf);
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for (size_t index = 0; index < size; ++index)
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{
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UInt8 type;
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DB::readBinary(type, buf);
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switch (type)
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{
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case Field::Types::Null:
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{
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x.push_back(DB::Field());
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break;
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}
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case Field::Types::UInt64:
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{
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UInt64 value;
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DB::readVarUInt(value, buf);
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x.push_back(value);
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break;
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}
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case Field::Types::UInt128:
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{
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UInt128 value;
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DB::readBinary(value, buf);
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x.push_back(value);
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break;
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}
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case Field::Types::Int64:
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{
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Int64 value;
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DB::readVarInt(value, buf);
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x.push_back(value);
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break;
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}
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case Field::Types::Float64:
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{
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Float64 value;
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DB::readFloatBinary(value, buf);
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x.push_back(value);
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break;
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}
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case Field::Types::String:
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{
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std::string value;
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DB::readStringBinary(value, buf);
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x.push_back(value);
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break;
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}
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case Field::Types::Array:
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{
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Array value;
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DB::readBinary(value, buf);
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x.push_back(value);
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break;
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}
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case Field::Types::Tuple:
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{
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Tuple value;
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DB::readBinary(value, buf);
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x.push_back(value);
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break;
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}
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case Field::Types::AggregateFunctionState:
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{
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AggregateFunctionStateData value;
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DB::readStringBinary(value.name, buf);
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DB::readStringBinary(value.data, buf);
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x.push_back(value);
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break;
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}
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}
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}
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}
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void writeBinary(const Tuple & x, WriteBuffer & buf)
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{
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const size_t size = x.size();
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DB::writeBinary(size, buf);
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for (const auto & elem : x)
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{
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const UInt8 type = elem.getType();
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DB::writeBinary(type, buf);
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switch (type)
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{
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case Field::Types::Null: break;
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case Field::Types::UInt64:
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{
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DB::writeVarUInt(get<UInt64>(elem), buf);
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break;
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}
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case Field::Types::UInt128:
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{
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DB::writeBinary(get<UInt128>(elem), buf);
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break;
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}
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case Field::Types::Int64:
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{
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DB::writeVarInt(get<Int64>(elem), buf);
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break;
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}
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case Field::Types::Float64:
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{
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DB::writeFloatBinary(get<Float64>(elem), buf);
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break;
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}
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case Field::Types::String:
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{
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DB::writeStringBinary(get<std::string>(elem), buf);
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break;
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}
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case Field::Types::Array:
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{
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DB::writeBinary(get<Array>(elem), buf);
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break;
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}
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case Field::Types::Tuple:
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{
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DB::writeBinary(get<Tuple>(elem), buf);
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break;
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}
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case Field::Types::AggregateFunctionState:
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{
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DB::writeStringBinary(elem.get<AggregateFunctionStateData>().name, buf);
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DB::writeStringBinary(elem.get<AggregateFunctionStateData>().data, buf);
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break;
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}
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}
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}
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}
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void writeText(const Tuple & x, WriteBuffer & buf)
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{
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writeFieldText(DB::Field(x), buf);
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}
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void writeFieldText(const Field & x, WriteBuffer & buf)
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{
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DB::String res = Field::dispatch(DB::FieldVisitorToString(), x);
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buf.write(res.data(), res.size());
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}
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template <typename T>
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static bool decEqual(T x, T y, UInt32 x_scale, UInt32 y_scale)
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{
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using Comparator = DecimalComparison<T, T, EqualsOp>;
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return Comparator::compare(x, y, x_scale, y_scale);
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}
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template <typename T>
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static bool decLess(T x, T y, UInt32 x_scale, UInt32 y_scale)
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{
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using Comparator = DecimalComparison<T, T, LessOp>;
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return Comparator::compare(x, y, x_scale, y_scale);
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}
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template <typename T>
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static bool decLessOrEqual(T x, T y, UInt32 x_scale, UInt32 y_scale)
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{
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using Comparator = DecimalComparison<T, T, LessOrEqualsOp>;
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return Comparator::compare(x, y, x_scale, y_scale);
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}
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template <> bool decimalEqual(Decimal32 x, Decimal32 y, UInt32 x_scale, UInt32 y_scale) { return decEqual(x, y, x_scale, y_scale); }
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template <> bool decimalLess(Decimal32 x, Decimal32 y, UInt32 x_scale, UInt32 y_scale) { return decLess(x, y, x_scale, y_scale); }
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template <> bool decimalLessOrEqual(Decimal32 x, Decimal32 y, UInt32 x_scale, UInt32 y_scale) { return decLessOrEqual(x, y, x_scale, y_scale); }
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template <> bool decimalEqual(Decimal64 x, Decimal64 y, UInt32 x_scale, UInt32 y_scale) { return decEqual(x, y, x_scale, y_scale); }
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template <> bool decimalLess(Decimal64 x, Decimal64 y, UInt32 x_scale, UInt32 y_scale) { return decLess(x, y, x_scale, y_scale); }
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template <> bool decimalLessOrEqual(Decimal64 x, Decimal64 y, UInt32 x_scale, UInt32 y_scale) { return decLessOrEqual(x, y, x_scale, y_scale); }
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template <> bool decimalEqual(Decimal128 x, Decimal128 y, UInt32 x_scale, UInt32 y_scale) { return decEqual(x, y, x_scale, y_scale); }
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template <> bool decimalLess(Decimal128 x, Decimal128 y, UInt32 x_scale, UInt32 y_scale) { return decLess(x, y, x_scale, y_scale); }
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template <> bool decimalLessOrEqual(Decimal128 x, Decimal128 y, UInt32 x_scale, UInt32 y_scale) { return decLessOrEqual(x, y, x_scale, y_scale); }
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}
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