src/PreparedStatement.h
author František Kučera <franta-hg@frantovo.cz>
Thu, 04 Jun 2020 00:46:00 +0200
branchv_0
changeset 47 428c278af4be
parent 36 91cb012d779a
child 53 cc6ffeba0fe5
permissions -rw-r--r--
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 © 2019 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 <list>
#include <string>
#include <utility>

#include <relpipe/reader/typedefs.h>
#include <relpipe/reader/TypeId.h>
#include <relpipe/writer/TypeId.h>
#include "SqlException.h"
#include "ResultSet.h"

namespace relpipe {
namespace tr {
namespace sql {

class PreparedStatement {
private:
	void* statement;
	std::wstring_convert<std::codecvt_utf8<wchar_t>> convertor; // TODO: support also other encodings
	std::list<relpipe::reader::boolean_t> booleanParameters;
	std::list<relpipe::reader::integer_t> integerParameters;
	std::list<std::pair<std::string, long>> stringParameters;
public:
	PreparedStatement(void* stmt);
	virtual ~PreparedStatement();
	ResultSet* executeQuery();
	long executeUpdate();
	void reset();
	void setBoolean(int parameterNumber, relpipe::reader::boolean_t value);
	void setInteger(int parameterNumber, relpipe::reader::integer_t value);
	void setString(int parameterNumber, relpipe::reader::string_t value);
	void setNull(int parameterNumber);
};

}
}
}