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/* xbcrtbl.cpp
XBase64 Software Library
Copyright (c) 1997,2003,2014,2019,2022 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::SqlCreateTable( const xbString &sCmdLine ){
// std::cout << "CREATE TABLE " << sCmdLine << std::endl;
// expected format:
// CREATE TABLE tablename.dbf (Field1 CHAR(10), INTFLD1 INTEGER, ... )
// supported field types
//
// SQL TYPE XBASE Field Type
// -------- ----------------
// SMALLINT NUMERIC(6,0)
// INTEGER NUMERIC(11,0)
// DECIMAL(x,y) NUMERIC(x+1,y)
// NUMERIC(x,y) NUMERIC(x,y)
// FLOAT(x,y) FLOAT(x,y)
// CHAR(n) CHARACTER(n)
// DATE DATE
// VARCHAR MEMO
// LOGICAL LOGICAL
xbInt16 iRc = 0;
xbInt16 iErrorStop = 0;
xbString sTableName;
xbString sFieldName;
xbString sDataType;
xbString sAttrib1;
xbString sAttrib2;
xbString sLlEntry;
xbInt16 iType = 0;
xbInt16 iAttribCnt; // number of attributes for a given data type
xbString s;
xbUInt32 lPos = 0;
xbUInt32 lSpPos = 0; // space position
xbUInt32 lCmPos = 0; // comma position
xbUInt32 lLpPos = 0; // left paren position
xbLinkList<xbString> ll;
xbSchema *schema = NULL;
xbString sMsg;
xbString sWork;
try{
// retrieve table name
s.ExtractElement( sCmdLine, '(', 1, 0 );
sTableName.ExtractElement( s, ' ', 3, 0 );
sTableName.Trim();
// std::cout << "Create table - Tablename = [" << sTableName.Str() << "]\n";
// std::cout << "Cm line = [" << sCmdLine.Str() << "]\n";
// determine if it already exists
xbFile f( xbase );
f.SetFileName( sTableName );
if( f.FileExists() ){
iErrorStop = 100;
iRc = XB_FILE_EXISTS;
throw iRc;
}
// build out table structure with parms from the sql string
lPos = sCmdLine.Pos( '(' );
s = sCmdLine;
s.Ltrunc( lPos );
s.Trim();
// remove the last byte, should be a )
s.Remove( s.Len(), 1 );
s.Trim();
xbBool bDone = xbFalse;
xbInt16 iLoop = 0;
while( !bDone && iLoop++ < 255 ){
sFieldName.ExtractElement( s, ' ', 1 , 0 );
lPos = sFieldName.Len();
sFieldName.Trim();
if( sFieldName.Len() > 10 )
sFieldName.Mid( 1, 10 ); // shrink to 10 buytes if too big
//std::cout << "field name=[" << sFieldName << "]\n";
s.Ltrunc( lPos + 1 );
s.Ltrim();
//std::cout << "remainder after field name removed = [" << s << "]\n";
// Data type is delimited with either a space, comma or left paren
lPos = 9999999;
lSpPos = s.Pos( ' ' );
lCmPos = s.Pos( ',' );
lLpPos = s.Pos( '(' );
if( lSpPos != 0 ) lPos = lSpPos;
if( lCmPos != 0 && lCmPos < lPos ) lPos = lCmPos;
if( lLpPos != 0 && lLpPos < lPos ) lPos = lLpPos;
//sMsg.Sprintf( "SpPos=[%d] CmPos=[%d] LpPos=[%d] lPos=[%d]", lSpPos, lCmPos, lLpPos, lPos );
//std::cout << sMsg << "\n";
sDataType.Assign( s, 1, lPos-1 );
//std::cout << "DataType=[" << sDataType << "]\n";
if( sDataType == "CHAR" )
iAttribCnt = 1;
else if( sDataType == "DECIMAL" || sDataType == "NUMERIC" || sDataType == "FLOAT" )
iAttribCnt = 2;
else if( sDataType == "SMALLINT" || sDataType == "INTEGER" || sDataType == "DATE" || sDataType == "VARCHAR" || sDataType == "LOGICAL" )
iAttribCnt = 0;
else{
iErrorStop = 110;
iRc = XB_INVALID_FIELD_TYPE;
throw iRc;
}
sAttrib1 = "";
sAttrib2 = "0";
if( iAttribCnt == 0 ){
s.Ltrunc( sDataType.Len());
} else if( iAttribCnt > 0 ){
lPos = s.Pos( '(' );
if( lPos <= 0 ){
iErrorStop = 120;
iRc = XB_INVALID_FIELD_LEN;
throw iRc;
}
s.Ltrunc( lPos );
lPos = s.Pos( ')' );
if( lPos <= 0 ){
iErrorStop = 130;
iRc = XB_INVALID_FIELD_LEN;
throw iRc;
}
sWork.Assign( s, 1, lPos - 1);
sWork.Trim();
if( iAttribCnt == 1 ){
sAttrib1 = sWork;
} else {
lCmPos = sWork.Pos( ',' );
if( lCmPos <= 0 ){
iErrorStop = 140;
iRc = XB_INVALID_FIELD_LEN;
throw iRc;
}
sAttrib1.Assign( sWork, 1, lCmPos - 1);
sAttrib1.Trim();
sWork.Ltrunc( lCmPos );
sAttrib2 = sWork;
sAttrib2.Trim();
}
s.Ltrunc( lPos );
}
s.Ltrim();
s.ZapLeadingChar( ',' );
s.Ltrim();
if( sDataType == "CHAR" ){
iType = XB_CHAR_FLD;
} else if( sDataType == "DECIMAL" ){
xbInt32 lVal = atol( sAttrib1.Str()) + 1;
sAttrib1.Sprintf( "%d", lVal );
iType = XB_NUMERIC_FLD;
} else if( sDataType == "SMALLINT" ){
sAttrib1 = "6";
iType = XB_NUMERIC_FLD;
} else if( sDataType == "INTEGER" ){
sAttrib1 = "11";
iType = XB_NUMERIC_FLD;
} else if( sDataType == "NUMERIC" ){
iType = XB_NUMERIC_FLD;
} else if( sDataType == "FLOAT" ) {
iType = XB_FLOAT_FLD;
} else if( sDataType == "DATE" ){
iType = XB_DATE_FLD;
sAttrib1 = "8";
} else if( sDataType == "VARCHAR" ){
iType = XB_MEMO_FLD;
sAttrib1 = "10";
} else if( sDataType == "LOGICAL" ){
iType = XB_LOGICAL_FLD;
sAttrib1 = "1";
}
sLlEntry.Sprintf( "%s,%s,%c,%s,%s", sFieldName.Str(), sDataType.Str(), iType, sAttrib1.Str(), sAttrib2.Str());
ll.InsertAtEnd( sLlEntry );
if( s.Len() == 0 )
bDone = xbTrue;
}
schema = (xbSchema *) calloc( ll.GetNodeCnt()+1, sizeof( xbSchema ));
xbLinkListNode<xbString> * llN = ll.GetHeadNode();
xbUInt32 ulCnt = ll.GetNodeCnt();
char *pTrg;
for( xbUInt32 i = 0; i < ulCnt; i++ ){
s = llN->GetKey();
sFieldName.ExtractElement( s, ',', 1 , 0 );
pTrg = schema[i].cFieldName;
for( xbUInt32 j = 0; j < sFieldName.Len(); j++ )
*pTrg++ = sFieldName[j+1];
sDataType.ExtractElement( s, ',', 3, 0 );
schema[i].cType = sDataType[1];
sAttrib1.ExtractElement( s, ',', 4, 0 );
schema[i].iFieldLen = atoi( sAttrib1.Str());
sAttrib2.ExtractElement( s, ',', 5, 0 );
schema[i].iNoOfDecs = atoi( sAttrib2.Str());
llN = llN->GetNextNode();
}
// create the table
xbDbf * dbf = NULL;
#ifdef XB_DBF4_SUPPORT
dbf = new xbDbf4( xbase );
#elif defined (XB_DBF3_SUPPORT)
dbf = new xbDbf3( xbase );
#endif
if(( iRc = dbf->CreateTable( sTableName, "", schema, 0, XB_MULTI_USER )) != XB_NO_ERROR ){
iErrorStop = 150;
throw iRc;
}
free( schema );
ll.Clear();
}
catch (xbInt16 iRc ){
xbString sMsg;
if( sFieldName.Len() > 0 )
sMsg.Sprintf( "xbSql::SqlCreateTbl() Exception Caught. Error Stop = [%d] rc = [%d] table = [%s] field = [%s]", iErrorStop, iRc, sTableName.Str(), sFieldName.Str() );
else
sMsg.Sprintf( "xbSql::SqlCreateTbl() Exception Caught. Error Stop = [%d] rc = [%d] table = [%s]", iErrorStop, iRc, sTableName.Str() );
xbase->WriteLogMessage( sMsg.Str() );
xbase->WriteLogMessage( GetErrorMessage( iRc ));
if( schema ) free( schema );
}
return iRc;
}
/***********************************************************************/
} /* namespace */
#endif /* XB_SQL_SUPPORT */
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