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dbms: development.

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This commit is contained in:
Alexey Milovidov 2009-07-29 17:34:49 +00:00
parent 777299ae48
commit f71d00d6f5
3 changed files with 63 additions and 3 deletions
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39
dbms/include/DB/ColumnType.h
View File

@ -511,6 +511,39 @@ public:
};
/** IP адрес. Отличается от UInt32 текстовой сериализацией. */
class ColumnTypeIPAddress : public ColumnTypeUInt32
{
public:
std::string getName() const { return "IPAddress"; }
void serializeText(const DB::Field & field, std::ostream & ostr) const
{
UInt x = boost::get<UInt>(field);
ostr << static_cast<Poco::UInt8>((x >> 24) & 0xFF)
<< "." << static_cast<Poco::UInt8>((x >> 16) & 0xFF)
<< "." << static_cast<Poco::UInt8>((x >> 8) & 0xFF)
<< "." << static_cast<Poco::UInt8>(x & 0xFF);
}
void deserializeText(DB::Field & field, std::istream & istr) const
{
Poco::UInt32 n1, n2, n3, n4;
istr >> n1;
istr.ignore();
istr >> n2;
istr.ignore();
istr >> n3;
istr.ignore();
istr >> n4;
istr.ignore();
if (n1 > 255 || n2 > 255 || n3 > 255 || n4 > 255)
throw Exception("Invalid IP address", ErrorCodes::INVALID_IP_ADDRESS);
boost::get<UInt>(field) = (n1 << 24) | (n2 << 16) | (n3 << 8) | n4;
}
};
class ColumnTypeFactory
{
public:
@ -530,6 +563,8 @@ public:
return new ColumnTypeUInt64;
if (name == "Text")
return new ColumnTypeText;
if (name == "IPAddress")
return new ColumnTypeIPAddress;
/// параметризованные типы
static Poco::RegularExpression one_parameter_regexp("^([^\\(]+)\\((.+)\\)$");
@ -537,7 +572,7 @@ public:
Poco::RegularExpression::MatchVec matches;
if (two_parameters_regexp.match(name, 0, matches))
if (two_parameters_regexp.match(name, 0, matches) && matches.size() == 3)
{
/// FixedArray(T, N), где T - любой тип, а N - размер
if (name.substr(matches[0].offset, matches[0].length) == "FixedArray")
@ -554,7 +589,7 @@ public:
}
}
if (one_parameter_regexp.match(name, 0, matches))
if (one_parameter_regexp.match(name, 0, matches) && matches.size() == 2)
{
/// FixedText(N), где N - размер
if (name.substr(matches[0].offset, matches[0].length) == "FixedText")

3
dbms/include/DB/ErrorCodes.h
View File

@ -18,7 +18,8 @@ namespace ErrorCodes
TOO_FEW_COLUMNS_FOR_KEY,
STORAGE_WAS_NOT_ATTACHED,
CANT_READ_DATA_FILE,
TOO_MANY_COLUMNS_FOR_KEY
TOO_MANY_COLUMNS_FOR_KEY,
INVALID_IP_ADDRESS,
};
}

24
dbms/src/tests/istream_test.cpp Normal file
View File

@ -0,0 +1,24 @@
#include <iostream>
#include <sstream>
#include <Poco/Types.h>
int main(int argc, char ** argv)
{
std::stringstream s;
s << "192.168.1.1fls";
unsigned x;
s >> x;
s.get();
std::cout << x << std::endl;
s >> x;
s.get();
std::cout << x << std::endl;
s >> x;
s.get();
std::cout << x << std::endl;
s >> x;
std::cout << x << std::endl;
return 0;
}