C++ (Cpp) QgsVectorDataProvider::storageType Examples

Example #1

File: qgszonalstatistics.cpp Project: exlimit/QGIS

QString QgsZonalStatistics::getUniqueFieldName( const QString &fieldName, const QList<QgsField> &newFields )
{
  QgsVectorDataProvider *dp = mPolygonLayer->dataProvider();

  if ( !dp->storageType().contains( QLatin1String( "ESRI Shapefile" ) ) )
  {
    return fieldName;
  }

  QList<QgsField> allFields = dp->fields().toList();
  allFields.append( newFields );
  QString shortName = fieldName.mid( 0, 10 );

  bool found = false;
  for ( int idx = 0; idx < allFields.count(); ++idx )
  {
    if ( shortName == allFields.at( idx ).name() )
    {
      found = true;
      break;
    }
  }

  if ( !found )
  {
    return shortName;
  }

  int n = 1;
  shortName = QStringLiteral( "%1_%2" ).arg( fieldName.mid( 0, 8 ) ).arg( n );
  found = true;
  while ( found )
  {
    found = false;
    for ( int idx = 0; idx < allFields.count(); ++idx )
    {
      if ( shortName == allFields.at( idx ).name() )
      {
        n += 1;
        if ( n < 9 )
        {
          shortName = QStringLiteral( "%1_%2" ).arg( fieldName.mid( 0, 8 ) ).arg( n );
        }
        else
        {
          shortName = QStringLiteral( "%1_%2" ).arg( fieldName.mid( 0, 7 ) ).arg( n );
        }
        found = true;
      }
    }
  }
  return shortName;
}

Example #2

File: qgszonalstatistics.cpp Project: Jesonchang12/QGIS

QString QgsZonalStatistics::getUniqueFieldName( const QString& fieldName )
{
  QgsVectorDataProvider* dp = mPolygonLayer->dataProvider();

  if ( !dp->storageType().contains( "ESRI Shapefile" ) )
  {
    return fieldName;
  }

  const QgsFields& providerFields = dp->fields();
  QString shortName = fieldName.mid( 0, 10 );

  bool found = false;
  for ( int idx = 0; idx < providerFields.count(); ++idx )
  {
    if ( shortName == providerFields[idx].name() )
    {
      found = true;
      break;
    }
  }

  if ( !found )
  {
    return shortName;
  }

  int n = 1;
  shortName = QString( "%1_%2" ).arg( fieldName.mid( 0, 8 ) ).arg( n );
  found = true;
  while ( found )
  {
    found = false;
    for ( int idx = 0; idx < providerFields.count(); ++idx )
    {
      if ( shortName == providerFields[idx].name() )
      {
        n += 1;
        if ( n < 9 )
        {
          shortName = QString( "%1_%2" ).arg( fieldName.mid( 0, 8 ) ).arg( n );
        }
        else
        {
          shortName = QString( "%1_%2" ).arg( fieldName.mid( 0, 7 ) ).arg( n );
        }
        found = true;
      }
    }
  }
  return shortName;
}