sqlmoreresults.c

来自「这个是内存数据库的客户端」· C语言 代码 · 共 75 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.
 */

/**********************************************************************
 * SQLMoreResults()
 * CLI Compliance: ODBC (Microsoft)
 *
 * Author: Martin van Dinther
 * Date  : 30 aug 2002
 *
 **********************************************************************/

#include "ODBCGlobal.h"
#include "ODBCStmt.h"


SQLRETURN SQL_API
SQLMoreResults(SQLHSTMT hStmt)
{
	ODBCStmt *stmt = (ODBCStmt *) hStmt;

#ifdef ODBCDEBUG
	ODBCLOG("SQLMoreResults " PTRFMT "\n", PTRFMTCAST hStmt);
#endif

	if (!isValidStmt(stmt))
		 return SQL_INVALID_HANDLE;

	clearStmtErrors(stmt);

	if (stmt->State < EXECUTED0)
		return SQL_NO_DATA;

	switch (mapi_next_result(stmt->hdl)) {
	case MOK:
		stmt->State = stmt->queryid >= 0 ? (stmt->State == EXECUTED0 ? PREPARED0 : PREPARED1) : INITED;
		return SQL_NO_DATA;
	case MERROR:
		/* General error */
		addStmtError(stmt, "HY000", mapi_error_str(stmt->Dbc->mid), 0);
		return SQL_ERROR;
	case MTIMEOUT:
		/* Communication link failure */
		addStmtError(stmt, "08S01", mapi_error_str(stmt->Dbc->mid), 0);
		return SQL_ERROR;
	default:
		return ODBCInitResult(stmt);
	}
}