/*********************************************************************
 *
 * This is based on code created by Peter Harvey,
 * (pharvey@codebydesign.com).
 *
 * Modified and extended by Nick Gorham
 * (nick@easysoft.com).
 *
 * 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: SQLColAttributes.c,v 1.2 1999/12/10 01:50:32 harvey Exp $
 *
 * $Log: SQLColAttributes.c,v $
 * Revision 1.2  1999/12/10 01:50:32  harvey
 * Updated with current sources from unixODBC cvs.
 *
 * Revision 1.8  1999/11/13 23:40:58  ngorham
 *
 * Alter the way DM logging works
 * Upgrade the Postgres driver to 6.4.6
 *
 * Revision 1.7  1999/11/10 03:51:33  ngorham
 *
 * Update the error reporting in the DM to enable ODBC 3 and 2 calls to
 * work at the same time
 *
 * Revision 1.6  1999/10/24 23:54:17  ngorham
 *
 * First part of the changes to the error reporting
 *
 * Revision 1.5  1999/09/21 22:34:24  ngorham
 *
 * Improve performance by removing unneeded logging calls when logging is
 * disabled
 *
 * Revision 1.4  1999/07/10 21:10:15  ngorham
 *
 * Adjust error sqlstate from driver manager, depending on requested
 * version (ODBC2/3)
 *
 * Revision 1.3  1999/07/04 21:05:07  ngorham
 *
 * Add LGPL Headers to code
 *
 * Revision 1.2  1999/06/30 23:56:54  ngorham
 *
 * Add initial thread safety code
 *
 * Revision 1.1.1.1  1999/05/29 13:41:05  sShandyb
 * first go at it
 *
 * Revision 1.2  1999/06/03 22:20:25  ngorham
 *
 * Finished off the ODBC3-2 mapping
 *
 * Revision 1.1.1.1  1999/05/27 18:23:17  pharvey
 * Imported sources
 *
 * Revision 1.1  1999/04/25 23:06:11  nick
 * Initial revision
 *
 *
 **********************************************************************/

#include "drivermanager.h"

static char const rcsid[]= "$RCSfile: SQLColAttributes.c,v $ $Revision: 1.2 $";

SQLRETURN SQLColAttributes( SQLHSTMT statement_handle,
           SQLUSMALLINT column_number,
           SQLUSMALLINT field_identifier,
           SQLPOINTER   character_attribute,
           SQLSMALLINT  buffer_length,
           SQLSMALLINT  *string_length,
           SQLINTEGER   *numeric_attribute )
{
    DMHSTMT statement = (DMHSTMT) statement_handle;
    SQLRETURN ret;
    SQLCHAR s0[ 20 ], s1[ 100 ];

    /*
     * check statement
     */
    if ( !__validate_stmt( statement ))
    {
        return SQL_INVALID_HANDLE;
    }

    function_entry( statement );

    if ( statement -> log_handle )
    {
        sprintf( statement -> msg, "\n\t\tEntry:\
            \n\t\t\tStatement = %p\
            \n\t\t\tColumn Number = %d\
            \n\t\t\tField Identifier = %s\
            \n\t\t\tCharacter Attr = %p\
            \n\t\t\tBuffer Length = %d\
            \n\t\t\tString Length = %p\
            \n\t\t\tNumeric Attribute = %p",
                statement,
                column_number,
                __col_attr_as_string( s1, field_identifier ),
                character_attribute,
                buffer_length,
                string_length,
                numeric_attribute );

        dm_log_write( statement -> log_handle, 
                __get_pid( s0 ), 
                __FILE__, 
                __LINE__, 
                LOG_INFO, 
                LOG_INFO, 
                statement -> msg );
    }

    thread_protect( SQL_HANDLE_STMT, statement );

    if ( column_number == 0 &&
            statement -> bookmarks_on == SQL_UB_OFF )
    {
        dm_log_write( statement -> log_handle, 
                __get_pid( s0 ), 
                __FILE__, 
                __LINE__, 
                LOG_INFO, 
                LOG_INFO, 
                "Error: 07009" );

        __post_internal_error( &statement -> error,
                ERROR_07009, NULL,
                statement -> connection -> environment -> requested_version );

        thread_release( SQL_HANDLE_STMT, statement );

        return function_return( statement, SQL_ERROR );
    }

	/*
	 * Commented out for now because most drivers can not calc num cols
	 * before Execute (they have no parse). - PAH
	 *
	
    if ( field_identifier != SQL_DESC_COUNT &&
            statement -> numcols < column_number )
    {
        dm_log_write( statement -> log_handle, 
                __get_pid( s0 ), 
                __FILE__, 
                __LINE__, 
                LOG_INFO, 
                LOG_INFO, 
                "Error: 07009" );

        __post_internal_error( &statement -> error,
                ERROR_07009, NULL,
                statement -> connection -> environment -> requested_version );

        thread_release( SQL_HANDLE_STMT, statement );

        return function_return( statement, SQL_ERROR );
    }
	*/

    /*
     * check states
     */
    if ( statement -> state == STATE_S1 )
    {
        dm_log_write( statement -> log_handle, 
                __get_pid( s0 ), 
                __FILE__, 
                __LINE__, 
                LOG_INFO, 
                LOG_INFO, 
                "Error: HY010" );

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

        thread_release( SQL_HANDLE_STMT, statement );

        return function_return( statement, SQL_ERROR );
    }
    else if ( statement -> state == STATE_S2 &&
            field_identifier != SQL_DESC_COUNT )
    {
        dm_log_write( statement -> log_handle, 
                __get_pid( s0 ), 
                __FILE__, 
                __LINE__, 
                LOG_INFO, 
                LOG_INFO, 
                "Error: 07005" );

        __post_internal_error( &statement -> error,
                ERROR_07005, NULL,
                statement -> connection -> environment -> requested_version );

        thread_release( SQL_HANDLE_STMT, statement );

        return function_return( statement, SQL_ERROR );
    }
    else if ( statement -> state == STATE_S4 )
    {
        dm_log_write( statement -> log_handle, 
                __get_pid( s0 ), 
                __FILE__, 
                __LINE__, 
                LOG_INFO, 
                LOG_INFO, 
                "Error: 24000" );

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

        thread_release( SQL_HANDLE_STMT, statement );

        return function_return( statement, SQL_ERROR );
    }
    else if ( statement -> state == STATE_S8 ||
            statement -> state == STATE_S9 ||
            statement -> state == STATE_S10 )
    {
        dm_log_write( statement -> log_handle, 
                __get_pid( s0 ), 
                __FILE__, 
                __LINE__, 
                LOG_INFO, 
                LOG_INFO, 
                "Error: HY010" );

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

        thread_release( SQL_HANDLE_STMT, statement );

        return function_return( statement, SQL_ERROR );
    }

    if ( statement -> state == STATE_S11 ||
            statement -> state == STATE_S12 )
    {
        if ( statement -> interupted_func != SQL_API_SQLCOLATTRIBUTES )
        {
            dm_log_write( statement -> log_handle, 
                    __get_pid( s0 ), 
                    __FILE__, 
                    __LINE__, 
                    LOG_INFO, 
                    LOG_INFO, 
                    "Error: HY010" );

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

            thread_release( SQL_HANDLE_STMT, statement );

            return function_return( statement, SQL_ERROR );
        }
    }

    if ( !CHECK_SQLCOLATTRIBUTES( statement -> connection ))
    {
        if ( !CHECK_SQLCOLATTRIBUTE( statement -> connection ))
        {
            /*
             * map to the ODBC3 function
             */
            if ( statement -> connection -> driver_version == SQL_OV_ODBC2 )
            {
                switch( field_identifier )
                {
                  case SQL_COLUMN_NAME:
                    field_identifier = SQL_DESC_NAME;
                    break;

                  case SQL_COLUMN_NULLABLE:
                    field_identifier = SQL_DESC_NULLABLE;
                    break;

                  case SQL_COLUMN_COUNT:
                    field_identifier = SQL_DESC_COUNT;
                    break;
                }
            }

            ret = SQLCOLATTRIBUTE( statement -> connection,
                statement -> driver_stmt,
                column_number,
                character_attribute,
                field_identifier,
                buffer_length,
                string_length,
                numeric_attribute );
        }
        else
        {
            dm_log_write( statement -> log_handle, 
                    __get_pid( s0 ), 
                    __FILE__, 
                    __LINE__, 
                    LOG_INFO, 
                    LOG_INFO, 
                    "Error: IM001" );

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

            thread_release( SQL_HANDLE_STMT, statement );

            return function_return( statement, SQL_ERROR );
        }
    }
    else
    {
        ret = SQLCOLATTRIBUTES( statement -> connection,
                statement -> driver_stmt,
                column_number,
                field_identifier,
                character_attribute,
                buffer_length,
                string_length,
                numeric_attribute );
    }

    if ( ret == SQL_STILL_EXECUTING )
    {
        statement -> interupted_func = SQL_API_SQLCOLATTRIBUTES;
        if ( statement -> state != STATE_S11 &&
                statement -> state != STATE_S12 )
            statement -> state = STATE_S11;
    }
    else if ( SQL_SUCCEEDED( ret ))
    {
        /*
         * map ODBC 3 datetime fields to ODBC2
         */

        if ( field_identifier == SQL_COLUMN_TYPE &&
                numeric_attribute &&
                statement -> connection -> driver_version == SQL_OV_ODBC2 )
        {
            SQLINTEGER na;

            memcpy( &na, numeric_attribute, sizeof( na ));

            switch( na )
            {
              case SQL_TYPE_TIME:
                na = SQL_TIME;
                memcpy( numeric_attribute, &na, sizeof( na ));
                break;

              case SQL_TYPE_DATE:
                na = SQL_DATE;
                memcpy( numeric_attribute, &na, sizeof( na ));
                break;

              case SQL_TYPE_TIMESTAMP:
                na = SQL_TIMESTAMP;
                memcpy( numeric_attribute, &na, sizeof( na ));
                break;
            }
        }
    }

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

        dm_log_write( statement -> log_handle, 
                __get_pid( s0 ), 
                __FILE__, 
                __LINE__, 
                LOG_INFO, 
                LOG_INFO, 
                statement -> msg );
    }

    thread_release( SQL_HANDLE_STMT, statement );

    return function_return( statement, ret );
}
