rename option --data-source-url to --data-source-string
In some implementations like JDBC, the connection string is URL,
but in ODBC the string is not formally URL, so it is better to use more general term „data source string“ instead of URL.
- data source name (DSN) = name of a pre-configured database connection that should be looked-up in configuration and used
- data source string (connection string) = arbitrary string containing (in certain encoding which might and might not be URL) all needed parameters (e.g. server name + port + user name + password)
Name and string might sometimes be also combined:
in ODBC we can e.g. connect to a string: DSN=relpipe;someParameter=foo;someOther=bar
which will lookup configuration for the „relpipe“ data source and will combine it with given parameters.
/**
* Relational pipes
* Copyright © 2020 František Kučera (Frantovo.cz, GlobalCode.info)
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, version 3.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <codecvt>
#include <locale>
#include <vector>
#include <relpipe/writer/typedefs.h>
#include <relpipe/writer/TypeId.h>
namespace relpipe {
namespace tr {
namespace sql {
class ResultSet {
public:
class MetaData {
public:
class ColumnDescriptor {
public:
relpipe::writer::string_t name;
relpipe::writer::TypeId type = relpipe::writer::TypeId::STRING;
};
private:
unsigned short columnCount;
std::vector<ColumnDescriptor> columnDescriptors;
public:
MetaData(unsigned short columnCount, std::vector<ColumnDescriptor> columnDescriptors);
virtual ~MetaData();
unsigned short getColumnCount();
ColumnDescriptor describeColumn(unsigned short columnNumber);
unsigned short getColumnNumber(relpipe::writer::string_t columnName);
};
private:
void* statement;
std::wstring_convert<std::codecvt_utf8<wchar_t>> convertor; // TODO: support also other encodings
public:
ResultSet(void* statement);
virtual ~ResultSet();
MetaData* getMetaData();
bool next();
relpipe::writer::boolean_t getBoolean(unsigned short columnNumber, bool* isNull = nullptr);
relpipe::writer::integer_t getInteger(unsigned short columnNumber, bool* isNull = nullptr);
relpipe::writer::string_t getString(unsigned short columnNumber, bool* isNull = nullptr);
};
}
}
}