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/**************************************************
*
*
**************************************************
* This code was created by Peter Harvey @ CodeByDesign.
* Released under GPL 18.FEB.99
*
* Contributions from...
* -----------------------------------------------
* Peter Harvey - pharvey@codebydesign.com
**************************************************/
#ifndef classODBC_included
#define classODBC_included
#include "classNode.h"
#include "classCanvas.h"
class classDrivers ;
class classDataSources ;
#include <qstring.h>
#include <qcursor.h>
#include <qnamespace.h>
#include <qmessagebox.h>
#include <qlistview.h>
#include <sqlext.h>
#define MAX_COLUMN_WIDTH 1024
// ******************************
// Common Utility Classes
// ******************************
// Use to display ODBC error messages
void my_msgBox( const QString & className,
const QString & actionName,
SQLRETURN rc = 0,
SQLHENV hEnv = NULL,
SQLHDBC hDbc = NULL,
SQLHSTMT hStmt = NULL,
const QString & moreInfo = "",
QMessageBox::Icon icon = QMessageBox::Critical ) ;
// Cursor scoper class
class CursorScoper: public QWidget
{
public:
CursorScoper( QWidget * w ) : w_(w)
{ w_->setCursor(waitCursor) ; }
~CursorScoper()
{ w_->unsetCursor() ; }
private:
QWidget *w_ ;
} ;
// SQL ENV scoper class
class EnvironmentScoper
{
public:
EnvironmentScoper( const QString & className = "" ) : hEnv_( NULL ) , className_( className )
{
SQLRETURN nReturn ;
if (!SQL_SUCCEEDED(nReturn=SQLAllocEnv( &hEnv_ ) ) )
my_msgBox( className_, "SQLAllocEnv", nReturn ) ;
}
HENV operator()() const
{
return hEnv_ ;
}
~EnvironmentScoper()
{
SQLRETURN nReturn ;
if (hEnv_)
if (!SQL_SUCCEEDED(nReturn=SQLFreeEnv( hEnv_ ) ) )
my_msgBox( className_, "SQLFreeEnv", nReturn ) ;
hEnv_ = NULL ;
}
private:
HENV hEnv_ ;
QString className_ ;
} ;
// SQL DBC scoper class
class ConnectionScoper
{
public:
ConnectionScoper( HENV hEnv, const QString & className = "" ) : hDbc_( NULL ) , className_( className ), active_( false )
{
SQLRETURN nReturn ;
if (!SQL_SUCCEEDED(nReturn=SQLAllocConnect( hEnv, &hDbc_ ) ) )
my_msgBox( className_, "SQLAllocConnect", nReturn, hEnv ) ;
}
HDBC operator()() const
{
return hDbc_ ;
}
bool connect( const QString & dataSourceName, const QString & uid, const QString & pwd )
{
SQLRETURN nReturn ;
if (!active_ && !SQL_SUCCEEDED(nReturn=SQLConnect( hDbc_, (SQLCHAR*)dataSourceName.data(), SQL_NTS, (SQLCHAR*)uid.data(), SQL_NTS, (SQLCHAR*)pwd.data(), SQL_NTS ) ) )
my_msgBox( className_, "SQLConnect", nReturn, NULL, hDbc_, NULL, dataSourceName ) ;
else
active_ = true ;
return active_ ;
}
void disconnect()
{
SQLRETURN nReturn ;
if (active_ && !SQL_SUCCEEDED(nReturn=SQLDisconnect( hDbc_ ) ) )
my_msgBox( className_, "SQLDisconnect", nReturn, NULL, hDbc_ ) ;
active_ = false ;
}
bool active() const
{
return active_ ;
}
~ConnectionScoper()
{
SQLRETURN nReturn ;
if (hDbc_)
{
if (active_ && !SQL_SUCCEEDED(nReturn=SQLDisconnect( hDbc_ ) ) )
my_msgBox( className_, "SQLDisconnect", nReturn, NULL, hDbc_ ) ;
if (!SQL_SUCCEEDED(nReturn=SQLFreeConnect( hDbc_ ) ) )
my_msgBox( className_, "SQLFreeConnect", nReturn, NULL, hDbc_ ) ;
hDbc_ = NULL ;
active_ = false ;
}
}
private:
HDBC hDbc_ ;
bool active_ ;
QString className_ ;
} ;
// Statement scoper class
class StatementScoper
{
public:
StatementScoper( HDBC hDbc, const QString & className = "" ) : hStmt_( NULL ) , className_( className )
{
SQLRETURN nReturn ;
if (!SQL_SUCCEEDED(nReturn=SQLAllocStmt( hDbc, &hStmt_ ) ) )
my_msgBox( className_, "SQLAllocStmt", nReturn, NULL, hDbc ) ;
}
HSTMT operator()() const
{
return hStmt_ ;
}
~StatementScoper()
{
SQLRETURN nReturn ;
if (hStmt_)
if (!SQL_SUCCEEDED(nReturn=SQLFreeStmt( hStmt_, SQL_DROP ) ) )
my_msgBox( className_, "SQLFreeStmt", nReturn, NULL, NULL, hStmt_ ) ;
hStmt_ = NULL ;
}
private:
HSTMT hStmt_ ;
QString className_ ;
} ;
// ******************************
// ******************************
class classODBC: public classNode
{
public:
enum DSType
{
User,
System
};
classODBC( QListView *pParent, classCanvas *pCanvas );
~classODBC() {}
void setOpen( bool );
void selectionChanged ( QListViewItem * );
private:
classDrivers *pDrivers;
classDataSources *pDataSourcesUser;
classDataSources *pDataSourcesSystem;
};
#endif
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