/*********************************************************************
 *
 * This is based on code created by Peter Harvey,
 * (pharvey@codebydesign.com).
 *
 * Modified and extended by Nick Gorham
 * (nick@lurcher.org).
 *
 * Any bugs or problems should be considered the fault of Nick and not
 * Peter.
 *
 * copyright (c) 1999 Nick Gorham
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 **********************************************************************
 *
 * $Id: SQLStatisticsW.c,v 1.9 2009/02/18 17:59:08 lurcher Exp $
 *
 * $Log: SQLStatisticsW.c,v $
 * Revision 1.9  2009/02/18 17:59:08  lurcher
 * Shift to using config.h, the compile lines were making it hard to spot warnings
 *
 * Revision 1.8  2008/08/29 08:01:39  lurcher
 * Alter the way W functions are passed to the driver
 *
 * Revision 1.7  2007/02/28 15:37:49  lurcher
 * deal with drivers that call internal W functions and end up in the driver manager. controlled by the --enable-handlemap configure arg
 *
 * Revision 1.6  2004/01/12 09:54:39  lurcher
 *
 * Fix problem where STATE_S5 stops metadata calls
 *
 * Revision 1.5  2003/10/30 18:20:46  lurcher
 *
 * Fix broken thread protection
 * Remove SQLNumResultCols after execute, lease S4/S% to driver
 * Fix string overrun in SQLDriverConnect
 * Add initial support for Interix
 *
 * Revision 1.4  2002/12/05 17:44:31  lurcher
 *
 * Display unknown return values in return logging
 *
 * Revision 1.3  2002/08/23 09:42:37  lurcher
 *
 * Fix some build warnings with casts, and a AIX linker mod, to include
 * deplib's on the link line, but not the libtool generated ones
 *
 * Revision 1.2  2002/07/24 08:49:52  lurcher
 *
 * Alter UNICODE support to use iconv for UNICODE-ANSI conversion
 *
 * Revision 1.1.1.1  2001/10/17 16:40:07  lurcher
 *
 * First upload to SourceForge
 *
 * Revision 1.3  2001/07/03 09:30:41  nick
 *
 * Add ability to alter size of displayed message in the log
 *
 * Revision 1.2  2001/04/12 17:43:36  nick
 *
 * Change logging and added autotest to odbctest
 *
 * Revision 1.1  2000/12/31 20:30:54  nick
 *
 * Add UNICODE support
 *
 *
 **********************************************************************/

#include <config.h>
#include "drivermanager.h"

static char const rcsid[]= "$RCSfile: SQLStatisticsW.c,v $";

SQLRETURN SQLStatisticsW( SQLHSTMT statement_handle,
           SQLWCHAR *catalog_name,
           SQLSMALLINT name_length1,
           SQLWCHAR *schema_name,
           SQLSMALLINT name_length2,
           SQLWCHAR *table_name,
           SQLSMALLINT name_length3,
           SQLUSMALLINT unique,
           SQLUSMALLINT reserved )
{
    DMHSTMT statement = (DMHSTMT) statement_handle;
    SQLRETURN ret;
    SQLCHAR s1[ 100 + LOG_MESSAGE_LEN ], s2[ 100 + LOG_MESSAGE_LEN ], s3[ 100 + LOG_MESSAGE_LEN ];

    /*
     * check statement
     */

    if ( !__validate_stmt( statement ))
    {
        dm_log_write( __FILE__, 
                    __LINE__, 
                    LOG_INFO, 
                    LOG_INFO, 
                    "Error: SQL_INVALID_HANDLE" );

#ifdef WITH_HANDLE_REDIRECT
		{
			DMHSTMT parent_statement;

			parent_statement = find_parent_handle( statement, SQL_HANDLE_STMT );

			if ( parent_statement ) {
        		dm_log_write( __FILE__, 
                	__LINE__, 
                    	LOG_INFO, 
                    	LOG_INFO, 
                    	"Info: found parent handle" );

				if ( CHECK_SQLSTATISTICSW( parent_statement -> connection ))
				{
        			dm_log_write( __FILE__, 
                		__LINE__, 
                   		 	LOG_INFO, 
                   		 	LOG_INFO, 
                   		 	"Info: calling redirected driver function" );

                	return  SQLSTATISTICSW( parent_statement -> connection,
							statement_handle,
           					catalog_name,
           					name_length1,
           					schema_name,
           					name_length2,
           					table_name,
           					name_length3,
           					unique,
           					reserved );
				}
			}
		}
#endif
        return SQL_INVALID_HANDLE;
    }

    function_entry( statement );

    if ( log_info.log_flag )
    {
        sprintf( statement -> msg, "\n\t\tEntry:\
\n\t\t\tStatement = %p\
\n\t\t\tCatalog Name = %s\
\n\t\t\tSchema Name = %s\
\n\t\t\tTable Name = %s\
\n\t\t\tUnique = %d\
\n\t\t\tReserved = %d",
                statement,
                __wstring_with_length( s1, catalog_name, name_length1 ), 
                __wstring_with_length( s2, schema_name, name_length2 ), 
                __wstring_with_length( s3, table_name, name_length3 ), 
                unique,
                reserved );

        dm_log_write( __FILE__, 
                __LINE__, 
                LOG_INFO, 
                LOG_INFO, 
                statement -> msg );
    }

    thread_protect( SQL_HANDLE_STMT, statement );

    if (( name_length1 < 0 && name_length1 != SQL_NTS ) ||
            ( name_length2 < 0 && name_length2 != SQL_NTS ) ||
            ( name_length3 < 0 && name_length3 != SQL_NTS ))
    {
        dm_log_write( __FILE__, 
                __LINE__, 
                LOG_INFO, 
                LOG_INFO, 
                "Error: HY090" );

        __post_internal_error( &statement -> error,
                ERROR_HY090, NULL,
                statement -> connection -> environment -> requested_version );

        return function_return_nodrv( SQL_HANDLE_STMT, statement, SQL_ERROR );
    }

    if ( reserved != SQL_ENSURE &&
            reserved != SQL_QUICK )
    {
        dm_log_write( __FILE__, 
                __LINE__, 
                LOG_INFO, 
                LOG_INFO, 
                "Error: HY101" );

        __post_internal_error( &statement -> error,
                ERROR_HY101, NULL,
                statement -> connection -> environment -> requested_version );

        return function_return_nodrv( SQL_HANDLE_STMT, statement, SQL_ERROR );
    }

    if ( unique != SQL_INDEX_UNIQUE &&
            unique != SQL_INDEX_ALL )
    {
        dm_log_write( __FILE__, 
                __LINE__, 
                LOG_INFO, 
                LOG_INFO, 
                "Error: HY100" );

        __post_internal_error( &statement -> error,
                ERROR_HY100, NULL,
                statement -> connection -> environment -> requested_version );

        return function_return_nodrv( SQL_HANDLE_STMT, statement, SQL_ERROR );
    }

    /*
     * check states
     */

#ifdef NR_PROBE
    if ( statement -> state == STATE_S5 ||
            statement -> state == STATE_S6 ||
            statement -> state == STATE_S7 )
#else
    if (( statement -> state == STATE_S6 && statement -> eod == 0 ) ||
            statement -> state == STATE_S7 )
#endif
    {
        dm_log_write( __FILE__, 
                __LINE__, 
                LOG_INFO, 
                LOG_INFO, 
                "Error: 24000" );

        __post_internal_error( &statement -> error,
                ERROR_24000, NULL,
                statement -> connection -> environment -> requested_version );

        return function_return_nodrv( SQL_HANDLE_STMT, statement, SQL_ERROR );
    }
    else if ( statement -> state == STATE_S8 ||
            statement -> state == STATE_S9 ||
            statement -> state == STATE_S10 ||
            statement -> state == STATE_S13 ||
            statement -> state == STATE_S14 ||
            statement -> state == STATE_S15 )
    {
        dm_log_write( __FILE__, 
                __LINE__, 
                LOG_INFO, 
                LOG_INFO, 
                "Error: HY010" );

        __post_internal_error( &statement -> error,
                ERROR_HY010, NULL,
                statement -> connection -> environment -> requested_version );

        return function_return_nodrv( SQL_HANDLE_STMT, statement, SQL_ERROR );
    }

    if ( statement -> state == STATE_S11 ||
            statement -> state == STATE_S12 )
    {
        if ( statement -> interupted_func != SQL_API_SQLSTATISTICS )
        {
            dm_log_write( __FILE__, 
                    __LINE__, 
                    LOG_INFO, 
                    LOG_INFO, 
                    "Error: HY010" );

            __post_internal_error( &statement -> error,
                    ERROR_HY010, NULL,
                    statement -> connection -> environment -> requested_version );

            return function_return_nodrv( SQL_HANDLE_STMT, statement, SQL_ERROR );
        }
    }

    if ( table_name == NULL ) 
    {
        dm_log_write( __FILE__, 
                __LINE__, 
                LOG_INFO, 
                LOG_INFO, 
                "Error: HY009" );

        __post_internal_error( &statement -> error,
                ERROR_HY009, NULL,
                statement -> connection -> environment -> requested_version );

        return function_return_nodrv( SQL_HANDLE_STMT, statement, SQL_ERROR );
    }

    if ( statement -> metadata_id == SQL_TRUE ) {
        if ( schema_name == NULL ) 
        {
            dm_log_write( __FILE__, 
                    __LINE__, 
                    LOG_INFO, 
                    LOG_INFO, 
                    "Error: HY009" );
    
            __post_internal_error( &statement -> error,
                    ERROR_HY009, NULL,
                    statement -> connection -> environment -> requested_version );
    
            return function_return_nodrv( SQL_HANDLE_STMT, statement, SQL_ERROR );
        }
    }

    if ( statement -> connection -> unicode_driver ||
		    CHECK_SQLSTATISTICSW( statement -> connection ))
    {
        if ( !CHECK_SQLSTATISTICSW( statement -> connection ))
        {
            dm_log_write( __FILE__, 
                    __LINE__, 
                    LOG_INFO, 
                    LOG_INFO, 
                    "Error: IM001" );

            __post_internal_error( &statement -> error,
                    ERROR_IM001, NULL,
                    statement -> connection -> environment -> requested_version );

            return function_return_nodrv( SQL_HANDLE_STMT, statement, SQL_ERROR );
        }

        ret = SQLSTATISTICSW( statement -> connection,
                statement -> driver_stmt,
                catalog_name,
                name_length1,
                schema_name,
                name_length2,
                table_name,
                name_length3,
                unique,
                reserved );
    }
    else
    {
        SQLCHAR *as1, *as2, *as3;
        int clen;

        if ( !CHECK_SQLSTATISTICS( statement -> connection ))
        {
            dm_log_write( __FILE__, 
                    __LINE__, 
                    LOG_INFO, 
                    LOG_INFO, 
                    "Error: IM001" );

            __post_internal_error( &statement -> error,
                    ERROR_IM001, NULL,
                    statement -> connection -> environment -> requested_version );

            return function_return_nodrv( SQL_HANDLE_STMT, statement, SQL_ERROR );
        }

        as1 = (SQLCHAR*) unicode_to_ansi_alloc( catalog_name, name_length1, statement -> connection, &clen );
        name_length1 = clen;
        as2 = (SQLCHAR*) unicode_to_ansi_alloc( schema_name, name_length2, statement -> connection, &clen );
        name_length2 = clen;
        as3 = (SQLCHAR*) unicode_to_ansi_alloc( table_name, name_length3, statement -> connection, &clen );
        name_length3 = clen;

        ret = SQLSTATISTICS( statement -> connection,
                statement -> driver_stmt,
                as1,
                name_length1,
                as2,
                name_length2,
                as3,
                name_length3,
                unique,
                reserved );

        if ( as1 ) free( as1 );
        if ( as2 ) free( as2 );
        if ( as3 ) free( as3 );
    }

    if ( SQL_SUCCEEDED( ret ))
    {
#ifdef NR_PROBE
		/********
		 * Added this to get num cols from drivers which can only tell
		 * us after execute - PAH
		 */
        /*
        ret = SQLNUMRESULTCOLS( statement -> connection,
                statement -> driver_stmt, &statement -> numcols );
         */
         statement -> numcols = 1;
		/******/
#endif
        statement -> hascols = 1;
        statement -> state = STATE_S5;
        statement -> prepared = 0;
    }
    else if ( ret == SQL_STILL_EXECUTING )
    {
        statement -> interupted_func = SQL_API_SQLSTATISTICS;
        if ( statement -> state != STATE_S11 &&
                statement -> state != STATE_S12 )
            statement -> state = STATE_S11;
    }
    else
    {
        statement -> state = STATE_S1;
    }

    if ( log_info.log_flag )
    {
        sprintf( statement -> msg, 
                "\n\t\tExit:[%s]",
                    __get_return_status( ret, s1 ));

        dm_log_write( __FILE__, 
                __LINE__, 
                LOG_INFO, 
                LOG_INFO, 
                statement -> msg );
    }

    return function_return( SQL_HANDLE_STMT, statement, ret, DEFER_R1 );
}
