1 /**

     2  * Relational pipes

     3  * Copyright © 2020 František Kučera (Frantovo.cz, GlobalCode.info)

     4  *

     5  * This program is free software: you can redistribute it and/or modify

     6  * it under the terms of the GNU General Public License as published by

     7  * the Free Software Foundation, version 3.

     8  *

     9  * This program is distributed in the hope that it will be useful,

    10  * but WITHOUT ANY WARRANTY; without even the implied warranty of

    11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

    12  * GNU General Public License for more details.

    13  *

    14  * You should have received a copy of the GNU General Public License

    15  * along with this program. If not, see <http://www.gnu.org/licenses/>.

    16  */

    17 #pragma once

    18 

    19 #include <sql.h>

    20 

    21 #include "SqlException.h"

    22 

    23 namespace relpipe {

    24 namespace tr {

    25 namespace sql {

    26 

    27 class OdbcCommon {

    28 public:

    29 

    30 	static bool isSuccessful(SQLRETURN result) {

    31 		return result == SQL_SUCCESS || result == SQL_SUCCESS_WITH_INFO;

    32 	}

    33 

    34 	static bool isNotSuccessful(SQLRETURN result) {

    35 		return !isSuccessful(result);

    36 	}

    37 

    38 	static SQLHANDLE allocateHandle(SQLSMALLINT type, SQLHANDLE input) {

    39 		SQLHANDLE output;

    40 		SQLRETURN result = SQLAllocHandle(type, input, &output);

    41 		if (isNotSuccessful(result)) throw SqlException(L"Unable to allocate handle " + std::to_wstring(type));

    42 		return output;

    43 	}

    44 

    45 	static void freeHandle(SQLSMALLINT type, SQLHANDLE handle) {

    46 		SQLRETURN result = SQLFreeHandle(type, handle);

    47 		if (isNotSuccessful(result)) throw SqlException(L"Unable to free handle of type: " + std::to_wstring(type));

    48 	}

    49 };

    50 

    51 }

    52 }

    53 }