[Qt-interest] How t o use sqlite3_create_collation_v2() API in QTapplication

[Scott Aron Bloom]

When you step in with  debugger..          whats the problem?

 

From: qt-interest-bounces+scott.bloom=onshorecs.com at qt.nokia.com
[mailto:qt-interest-bounces+scott.bloom=onshorecs.com at qt.nokia.com] On
Behalf Of ashish yadav
Sent: Saturday, January 29, 2011 8:07 AM
To: qt-interest at trolltech.com
Subject: [Qt-interest] How t o use sqlite3_create_collation_v2() API in
QTapplication

 

Hi ,

I am trying to use sqlite3_create_collation_v2() in QT application, but
it give Segmentation fault when application try to access this function.

The part of code which i use for this :
////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////
/////////////////////////
////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////
///////////////////////
QSqlDatabase db = QSqlDatabase::addDatabase( "QSQLITE" );

  db.setDatabaseName( "./testdatabase.db" );

  if( !db.open() )
  {
     qDebug() << db.lastError();
     qFatal( "Failed to connect." );
     exit(1); 
  }

  qDebug("Data Base Connected.");

  QVariant v = db.driver()->handle();    
  if (v.isValid() && strcmp(v.typeName(), "sqlite3*") == 0)    
  {
     // v.data() returns a pointer to the handle    
     sqlite3 *handle = *static_cast<sqlite3 **>(v.data());    
     if (handle != 0)
     {  // check that it is not NULL
        qDebug() << "Able to  get Sqlite3 driver handle.";

        int rc ;
         
        UCollator *pUCollator;    
        UErrorCode status = U_ZERO_ERROR;
        
        pUCollator = ucol_open("en_EN", &status);
     
        if( U_FAILURE(status) )
        {
           qDebug() << "Error in ucol_open\n";
           return 0;
        } 
       
        qDebug() << "going for sqlite3_create_collation_v2\n";

        rc = sqlite3_create_collation_v2(handle,"ENGLISH", SQLITE_UTF16,
(void *)pUCollator,            
                 icuCollationColl, icuCollationDel ); 

        if( rc!=SQLITE_OK )
        {
           ucol_close(pUCollator);
           qDebug() << "Error registering collation function" ;
        }

     }   
     else 
     {
        qDebug() << "Could not get sqlite Driver handle.";
        db.close();
        exit(1);           
     }

  }    
  else
  {
     qDebug() << "Not vaild handle variant returned." ; 
     db.close();
     exit(1);
  }


////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////
////////////////
////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////
///////

I also define/declare  icuCollationColl & icuCollationDel  function ..
Now when i run this application , its give Segmentation fault :
./code
Data Base Connected.
Able to  get Sqlite3 driver handle. 
going for sqlite3_create_collation_v2
 
Segmentation fault


Can any one please help me to resolve this issue ? 
Please give me your suggestion , it will be help full to  resolve this
issue. 

Thanks & Regards
    Ashish

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