475 lines
14 KiB
C
475 lines
14 KiB
C
/*********************************************************************
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*
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* This is based on code created by Peter Harvey,
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* (pharvey@codebydesign.com).
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*
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* Modified and extended by Nick Gorham
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* (nick@lurcher.org).
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*
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* Any bugs or problems should be considered the fault of Nick and not
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* Peter.
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*
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* copyright (c) 1999 Nick Gorham
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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**********************************************************************
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*
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* $Id: SQLDescribeColW.c,v 1.14 2009/02/18 17:59:08 lurcher Exp $
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*
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* $Log: SQLDescribeColW.c,v $
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* Revision 1.14 2009/02/18 17:59:08 lurcher
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* Shift to using config.h, the compile lines were making it hard to spot warnings
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*
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* Revision 1.13 2008/08/29 08:01:38 lurcher
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* Alter the way W functions are passed to the driver
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*
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* Revision 1.12 2008/05/20 13:43:47 lurcher
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* Vms fixes
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*
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* Revision 1.11 2007/04/02 10:50:18 lurcher
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* Fix some 64bit problems (only when sizeof(SQLLEN) == 8 )
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*
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* Revision 1.10 2007/02/28 15:37:47 lurcher
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* deal with drivers that call internal W functions and end up in the driver manager. controlled by the --enable-handlemap configure arg
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*
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* Revision 1.9 2007/01/02 10:27:50 lurcher
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* Fix descriptor leak with unicode only driver
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*
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* Revision 1.8 2003/10/30 18:20:45 lurcher
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*
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* Fix broken thread protection
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* Remove SQLNumResultCols after execute, lease S4/S% to driver
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* Fix string overrun in SQLDriverConnect
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* Add initial support for Interix
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*
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* Revision 1.7 2002/12/05 17:44:30 lurcher
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*
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* Display unknown return values in return logging
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*
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* Revision 1.6 2002/08/23 09:42:37 lurcher
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*
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* Fix some build warnings with casts, and a AIX linker mod, to include
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* deplib's on the link line, but not the libtool generated ones
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*
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* Revision 1.5 2002/08/19 09:11:49 lurcher
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*
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* Fix Maxor ineffiecny in Postgres Drivers, and fix a return state
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*
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* Revision 1.4 2002/07/24 08:49:51 lurcher
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*
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* Alter UNICODE support to use iconv for UNICODE-ANSI conversion
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*
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* Revision 1.3 2002/05/21 14:19:44 lurcher
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*
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* * Update libtool to escape from AIX build problem
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* * Add fix to avoid file handle limitations
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* * Add more UNICODE changes, it looks like it is native 16 representation
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* the old way can be reproduced by defining UCS16BE
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* * Add iusql, its just the same as isql but uses the wide functions
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*
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* Revision 1.2 2001/12/13 13:00:32 lurcher
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*
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* Remove most if not all warnings on 64 bit platforms
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* Add support for new MS 3.52 64 bit changes
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* Add override to disable the stopping of tracing
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* Add MAX_ROWS support in postgres driver
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*
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* Revision 1.1.1.1 2001/10/17 16:40:05 lurcher
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*
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* First upload to SourceForge
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*
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* Revision 1.4 2001/07/03 09:30:41 nick
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*
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* Add ability to alter size of displayed message in the log
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*
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* Revision 1.3 2001/04/12 17:43:36 nick
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*
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* Change logging and added autotest to odbctest
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*
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* Revision 1.2 2001/03/21 12:26:27 nick
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*
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* Alter def for SQLDescribeColW
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*
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* Revision 1.1 2000/12/31 20:30:54 nick
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*
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* Add UNICODE support
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*
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*
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**********************************************************************/
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#include <config.h>
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#include "drivermanager.h"
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static char const rcsid[]= "$RCSfile: SQLDescribeColW.c,v $";
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SQLRETURN SQLDescribeColW( SQLHSTMT statement_handle,
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SQLUSMALLINT column_number,
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SQLWCHAR *column_name,
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SQLSMALLINT buffer_length,
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SQLSMALLINT *name_length,
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SQLSMALLINT *data_type,
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SQLULEN *column_size,
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SQLSMALLINT *decimal_digits,
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SQLSMALLINT *nullable )
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{
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DMHSTMT statement = (DMHSTMT) statement_handle;
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SQLRETURN ret;
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SQLCHAR s1[ 100 + LOG_MESSAGE_LEN ], s2[ 100 + LOG_MESSAGE_LEN ], s3[ 100 + LOG_MESSAGE_LEN ], s4[ 100 + LOG_MESSAGE_LEN ];
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SQLCHAR s5[ 100 + LOG_MESSAGE_LEN ];
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SQLCHAR s6[ 100 + LOG_MESSAGE_LEN ];
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/*
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* check statement
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*/
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if ( !__validate_stmt( statement ))
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{
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dm_log_write( __FILE__,
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__LINE__,
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LOG_INFO,
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LOG_INFO,
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"Error: SQL_INVALID_HANDLE" );
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#ifdef WITH_HANDLE_REDIRECT
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{
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DMHSTMT parent_statement;
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parent_statement = find_parent_handle( statement, SQL_HANDLE_STMT );
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if ( parent_statement ) {
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dm_log_write( __FILE__,
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__LINE__,
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LOG_INFO,
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LOG_INFO,
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"Info: found parent handle" );
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if ( CHECK_SQLDESCRIBECOLW( parent_statement -> connection ))
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{
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dm_log_write( __FILE__,
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__LINE__,
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LOG_INFO,
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LOG_INFO,
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"Info: calling redirected driver function" );
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return SQLDESCRIBECOLW( parent_statement -> connection,
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statement_handle,
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column_number,
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column_name,
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buffer_length,
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name_length,
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data_type,
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column_size,
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decimal_digits,
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nullable );
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}
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}
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}
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#endif
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return SQL_INVALID_HANDLE;
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}
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function_entry( statement );
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if ( log_info.log_flag )
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{
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sprintf( statement -> msg, "\n\t\tEntry:\
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\n\t\t\tStatement = %p\
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\n\t\t\tColumn Number = %d\
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\n\t\t\tColumn Name = %p\
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\n\t\t\tBuffer Length = %d\
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\n\t\t\tName Length = %p\
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\n\t\t\tData Type = %p\
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\n\t\t\tColumn Size = %p\
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\n\t\t\tDecimal Digits = %p\
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\n\t\t\tNullable = %p",
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statement,
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column_number,
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column_name,
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buffer_length,
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name_length,
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data_type,
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column_size,
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decimal_digits,
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nullable );
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dm_log_write( __FILE__,
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__LINE__,
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LOG_INFO,
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LOG_INFO,
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statement -> msg );
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}
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thread_protect( SQL_HANDLE_STMT, statement );
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if ( column_number == 0 &&
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statement -> bookmarks_on == SQL_UB_OFF && statement -> connection -> bookmarks_on == SQL_UB_OFF )
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{
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dm_log_write( __FILE__,
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__LINE__,
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LOG_INFO,
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LOG_INFO,
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"Error: 07009" );
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__post_internal_error_api( &statement -> error,
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ERROR_07009, NULL,
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statement -> connection -> environment -> requested_version,
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SQL_API_SQLDESCRIBECOL );
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return function_return_nodrv( SQL_HANDLE_STMT, statement, SQL_ERROR );
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}
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/*
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* sadly we can't trust the numcols value
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*
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if ( statement -> numcols < column_number )
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{
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__post_internal_error( &statement -> error,
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ERROR_07009, NULL,
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statement -> connection -> environment -> requested_version );
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return function_return( SQL_HANDLE_STMT, statement, SQL_ERROR );
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}
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*/
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if ( buffer_length < 0 )
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{
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dm_log_write( __FILE__,
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__LINE__,
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LOG_INFO,
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LOG_INFO,
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"Error: HY090" );
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__post_internal_error( &statement -> error,
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ERROR_HY090, NULL,
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statement -> connection -> environment -> requested_version );
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return function_return_nodrv( SQL_HANDLE_STMT, statement, SQL_ERROR );
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}
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/*
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* check states
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*/
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if ( statement -> state == STATE_S1 ||
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statement -> state == STATE_S8 ||
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statement -> state == STATE_S9 ||
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statement -> state == STATE_S10 ||
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statement -> state == STATE_S13 ||
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statement -> state == STATE_S14 ||
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statement -> state == STATE_S15 )
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{
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dm_log_write( __FILE__,
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__LINE__,
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LOG_INFO,
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LOG_INFO,
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"Error: HY010" );
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__post_internal_error( &statement -> error,
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ERROR_HY010, NULL,
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statement -> connection -> environment -> requested_version );
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return function_return_nodrv( SQL_HANDLE_STMT, statement, SQL_ERROR );
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}
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/*
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* This seems to be down to the driver in the MS DM
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*
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else if ( statement -> state == STATE_S2 )
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{
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dm_log_write( __FILE__,
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__LINE__,
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LOG_INFO,
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LOG_INFO,
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"Error: 07005" );
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__post_internal_error( &statement -> error,
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ERROR_07005, NULL,
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statement -> connection -> environment -> requested_version );
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return function_return( SQL_HANDLE_STMT, statement, SQL_ERROR );
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}
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*/
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else if ( statement -> state == STATE_S4 )
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{
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dm_log_write( __FILE__,
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__LINE__,
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LOG_INFO,
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LOG_INFO,
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"Error: HY010" );
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__post_internal_error( &statement -> error,
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ERROR_HY010, NULL,
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statement -> connection -> environment -> requested_version );
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return function_return_nodrv( SQL_HANDLE_STMT, statement, SQL_ERROR );
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}
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else if ( statement -> state == STATE_S8 ||
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statement -> state == STATE_S9 ||
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statement -> state == STATE_S10 )
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{
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dm_log_write( __FILE__,
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__LINE__,
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LOG_INFO,
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LOG_INFO,
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"Error: HY010" );
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__post_internal_error( &statement -> error,
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ERROR_HY010, NULL,
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statement -> connection -> environment -> requested_version );
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return function_return_nodrv( SQL_HANDLE_STMT, statement, SQL_ERROR );
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}
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if ( statement -> state == STATE_S11 ||
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statement -> state == STATE_S12 )
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{
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if ( statement -> interupted_func != SQL_API_SQLDESCRIBECOL )
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{
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dm_log_write( __FILE__,
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__LINE__,
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LOG_INFO,
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LOG_INFO,
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"Error: HY010" );
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__post_internal_error( &statement -> error,
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ERROR_HY010, NULL,
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statement -> connection -> environment -> requested_version );
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return function_return_nodrv( SQL_HANDLE_STMT, statement, SQL_ERROR );
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}
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}
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if ( statement -> connection -> unicode_driver ||
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CHECK_SQLDESCRIBECOLW( statement -> connection ))
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{
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if ( !CHECK_SQLDESCRIBECOLW( statement -> connection ))
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{
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dm_log_write( __FILE__,
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__LINE__,
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LOG_INFO,
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LOG_INFO,
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"Error: IM001" );
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__post_internal_error( &statement -> error,
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ERROR_IM001, NULL,
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statement -> connection -> environment -> requested_version );
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return function_return_nodrv( SQL_HANDLE_STMT, statement, SQL_ERROR );
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}
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ret = SQLDESCRIBECOLW( statement -> connection,
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statement -> driver_stmt,
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column_number,
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column_name,
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buffer_length,
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name_length,
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data_type,
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column_size,
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decimal_digits,
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nullable );
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}
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else
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{
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SQLCHAR *as1 = NULL;
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if ( !CHECK_SQLDESCRIBECOL( statement -> connection ))
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{
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dm_log_write( __FILE__,
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__LINE__,
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LOG_INFO,
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LOG_INFO,
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"Error: IM001" );
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__post_internal_error( &statement -> error,
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ERROR_IM001, NULL,
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statement -> connection -> environment -> requested_version );
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return function_return_nodrv( SQL_HANDLE_STMT, statement, SQL_ERROR );
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}
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if ( buffer_length > 0 && column_name )
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{
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as1 = malloc( buffer_length + 1 );
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}
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ret = SQLDESCRIBECOL( statement -> connection,
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statement -> driver_stmt,
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column_number,
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as1 ? as1 : (SQLCHAR*)column_name,
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buffer_length,
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name_length,
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data_type,
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column_size,
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decimal_digits,
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nullable );
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if ( column_name && as1 )
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{
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ansi_to_unicode_copy( column_name, (char*) as1, SQL_NTS, statement -> connection, NULL );
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}
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if ( as1 )
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{
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free( as1 );
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}
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}
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if ( (ret == SQL_SUCCESS || ret == SQL_SUCCESS_WITH_INFO) && data_type )
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{
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*data_type=__map_type(MAP_SQL_D2DM,statement->connection, *data_type);
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}
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if ( ret == SQL_STILL_EXECUTING )
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{
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statement -> interupted_func = SQL_API_SQLDESCRIBECOL;
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if ( statement -> state != STATE_S11 &&
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statement -> state != STATE_S12 )
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statement -> state = STATE_S11;
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}
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if ( log_info.log_flag )
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{
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if ( !SQL_SUCCEEDED( ret )) {
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sprintf( statement -> msg,
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"\n\t\tExit:[%s]",
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__get_return_status( ret, s6 ));
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}
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else {
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sprintf( statement -> msg,
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"\n\t\tExit:[%s]\
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\n\t\t\tColumn Name = %s\
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\n\t\t\tData Type = %s\
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\n\t\t\tColumn Size = %s\
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\n\t\t\tDecimal Digits = %s\
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\n\t\t\tNullable = %s",
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__get_return_status( ret, s6 ),
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__sdata_as_string( s1, SQL_WCHAR,
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name_length, column_name ),
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__sptr_as_string( s2, data_type ),
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__ptr_as_string( s3, (SQLLEN*)column_size ),
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__sptr_as_string( s4, decimal_digits ),
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__sptr_as_string( s5, nullable ));
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}
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dm_log_write( __FILE__,
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__LINE__,
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LOG_INFO,
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LOG_INFO,
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statement -> msg );
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}
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return function_return( SQL_HANDLE_STMT, statement, ret );
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}
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