sqlerror.c

来自「这个是内存数据库的客户端」· C语言 代码 · 共 102 行

/*
 * The contents of this file are subject to the MonetDB Public License
 * Version 1.1 (the "License"); you may not use this file except in
 * compliance with the License. You may obtain a copy of the License at
 * http://monetdb.cwi.nl/Legal/MonetDBLicense-1.1.html
 *
 * Software distributed under the License is distributed on an "AS IS"
 * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
 * License for the specific language governing rights and limitations
 * under the License.
 *
 * The Original Code is the MonetDB Database System.
 *
 * The Initial Developer of the Original Code is CWI.
 * Portions created by CWI are Copyright (C) 1997-2007 CWI.
 * All Rights Reserved.
 */

/*
 * This code was created by Peter Harvey (mostly during Christmas 98/99).
 * This code is LGPL. Please ensure that this message remains in future
 * distributions and uses of this code (thats about all I get out of it).
 * - Peter Harvey [e-mail]
 * 
 * This file has been modified for the MonetDB project.  See the file
 * Copyright in this directory for more information.
 */

/**********************************************************************
 * SQLError()
 * CLI Compliance: deprecated in ODBC 3.0 (replaced by SQLGetDiagRec())
 * Provided here for old (pre ODBC 3.0) applications and driver managers.
 *
 * Author: Martin van Dinther
 * Date  : 30 aug 2002
 *
 **********************************************************************/

#include "ODBCGlobal.h"
#include "ODBCEnv.h"
#include "ODBCDbc.h"
#include "ODBCStmt.h"
#include "ODBCUtil.h"

SQLRETURN SQL_API
SQLError(SQLHENV hEnv, SQLHDBC hDbc, SQLHSTMT hStmt, SQLCHAR *szSqlState, SQLINTEGER *pfNativeError, SQLCHAR *szErrorMsg, SQLSMALLINT nErrorMsgMax, SQLSMALLINT *pcbErrorMsg)
{
#ifdef ODBCDEBUG
	ODBCLOG("SQLError " PTRFMT " " PTRFMT " " PTRFMT "\n", PTRFMTCAST hEnv, PTRFMTCAST hDbc, PTRFMTCAST hStmt);
#endif

	/* use mapping as described in ODBC 3 SDK Help file */
	return SQLGetDiagRec_(hStmt ? SQL_HANDLE_STMT : (hDbc ? SQL_HANDLE_DBC : SQL_HANDLE_ENV), hStmt ? hStmt : (hDbc ? hDbc : hEnv),
			      (hStmt ? ++((ODBCStmt *) hStmt)->RetrievedErrors : (hDbc ? ++((ODBCDbc *) hDbc)->RetrievedErrors : ++((ODBCEnv *) hEnv)->RetrievedErrors)), szSqlState, pfNativeError, szErrorMsg, nErrorMsgMax, pcbErrorMsg);
}

#ifdef WITH_WCHAR
SQLRETURN SQL_API
SQLErrorA(SQLHENV hEnv, SQLHDBC hDbc, SQLHSTMT hStmt, SQLCHAR *szSqlState, SQLINTEGER *pfNativeError, SQLCHAR *szErrorMsg, SQLSMALLINT nErrorMsgMax, SQLSMALLINT *pcbErrorMsg)
{
	return SQLError(hEnv, hDbc, hStmt, szSqlState, pfNativeError, szErrorMsg, nErrorMsgMax, pcbErrorMsg);
}

SQLRETURN SQL_API
SQLErrorW(SQLHENV hEnv, SQLHDBC hDbc, SQLHSTMT hStmt, SQLWCHAR * szSqlState, SQLINTEGER *pfNativeError, SQLWCHAR * szErrorMsg, SQLSMALLINT nErrorMsgMax, SQLSMALLINT *pcbErrorMsg)
{
	SQLCHAR state[6];
	SQLRETURN rc;
	SQLSMALLINT n;
	SQLCHAR *errmsg;

#ifdef ODBCDEBUG
	ODBCLOG("SQLErrorW " PTRFMT " " PTRFMT " " PTRFMT "\n", PTRFMTCAST hEnv, PTRFMTCAST hDbc, PTRFMTCAST hStmt);
#endif

	errmsg = (SQLCHAR *) malloc(nErrorMsgMax * 4);

	/* use mapping as described in ODBC 3 SDK Help file */
	rc = SQLGetDiagRec_(hStmt ? SQL_HANDLE_STMT : (hDbc ? SQL_HANDLE_DBC : SQL_HANDLE_ENV), hStmt ? hStmt : (hDbc ? hDbc : hEnv),
			    (hStmt ? ++((ODBCStmt *) hStmt)->RetrievedErrors : (hDbc ? ++((ODBCDbc *) hDbc)->RetrievedErrors : ++((ODBCEnv *) hEnv)->RetrievedErrors)), state, pfNativeError, errmsg, nErrorMsgMax * 4, &n);

	if (SQL_SUCCEEDED(rc)) {
		char *e = ODBCutf82wchar(state, 5, szSqlState, 6, NULL);

		if (e)
			rc = SQL_ERROR;
	}

	if (SQL_SUCCEEDED(rc)) {
		char *e = ODBCutf82wchar(errmsg, n, szErrorMsg, nErrorMsgMax, &n);

		if (e)
			rc = SQL_ERROR;
		if (pcbErrorMsg)
			*pcbErrorMsg = n;
	}
	free(errmsg);

	return rc;
}
#endif /* WITH_WCHAR */