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/* xbslttbl.cpp
XBase64 Software Library
Copyright (c) 1997,2003,2014,2022 Gary A Kunkel
The xb64 software library is covered under the terms of the GPL Version 3, 2007 license.
Email Contact:
XDB-devel@lists.sourceforge.net
XDB-users@lists.sourceforge.net
*/
#include "xbase.h"
#ifdef XB_SQL_SUPPORT
namespace xb{
/***********************************************************************/
xbInt16 xbSql::SqlAlterTable( const xbString &sCmdLine ){
// expected format:
// ALTER TABLE tablename.DBF RENAME TO newtablename.DBF
xbInt16 iRc = 0;
xbInt16 iErrorStop = 0;
xbString sTableName = "";
xbUInt32 ulPos = 0;
xbString sCmd = sCmdLine;
xbString sNode = "";
xbString sSrcTbl;
xbString sTrgTbl;
xbDbf * dbf = NULL;
try{
// std::cout << "xbSql::SqlAlterTable( " << sCmdLine.Str() << " )\n";
// drop off the first node "DROP"
ulPos = sCmd.Pos( ' ' );
sCmd.Ltrunc( ulPos );
sCmd.Ltrim();
// drop off the second node "TABLE"
ulPos = sCmd.Pos( ' ' );
sCmd.Ltrunc( ulPos );
sCmd.Ltrim();
// pull off the source table
sSrcTbl.ExtractElement( sCmd, ' ', 1, 0 );
sSrcTbl.Trim();
// pull off the action
sNode.ExtractElement( sCmd, ' ', 2, 0 );
sNode.Trim();
sNode.ToUpperCase();
if( sNode != "RENAME" ){
iErrorStop = 100;
iRc = XB_SYNTAX_ERROR;
throw iRc;
}
// pull off "TO"
sNode.ExtractElement( sCmd, ' ', 3, 0 );
sNode.Trim();
sNode.ToUpperCase();
if( sNode != "TO" ){
iErrorStop = 110;
iRc = XB_SYNTAX_ERROR;
throw iRc;
}
sTrgTbl.ExtractElement( sCmd, ' ', 4, 0 );
sTrgTbl.Trim();
// std::cout << "source table name = " << sSrcTbl.Str() << "\n";
// std::cout << "target table name = " << sTrgTbl.Str() << "\n";
// if not open, attempt to open it
dbf = xbase->GetDbfPtr( sSrcTbl );
if( !dbf ){
if(( iRc = xbase->OpenHighestVersion( sSrcTbl, "", &dbf )) != XB_NO_ERROR ){
iErrorStop = 120;
throw iRc;
}
}
if( !dbf ){
iErrorStop = 130;
iRc = XB_DBF_FILE_NOT_OPEN;
throw iRc;
}
if(( iRc = dbf->Rename( sTrgTbl )) != XB_NO_ERROR ){
iErrorStop = 140;
throw iRc;
}
}
catch (xbInt16 iRc ){
xbString sMsg;
sMsg.Sprintf( "xbSql::SqlAlterTable() Exception Caught. Error Stop = [%d] rc = [%d] table = [%s]", iErrorStop, iRc, sTableName.Str() );
xbase->WriteLogMessage( sMsg.Str() );
xbase->WriteLogMessage( GetErrorMessage( iRc ));
}
return iRc;
}
/***********************************************************************/
} /* namespace */
#endif /* XB_SQL_SUPPORT */
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