Method WriteData

IO/SQL/vtkTableToSQLiteWriter.cxx:29–131

------------------------------------------------------------------------------

//------------------------------------------------------------------------------
void vtkTableToSQLiteWriter::WriteData()
{
  // Make sure we have all the information we need to create an SQLite table
  if (!this->Database)
  {
    vtkErrorMacro(<< "No open database connection");
    return;
  }
  if (!this->Database->IsA("vtkSQLiteDatabase"))
  {
    vtkErrorMacro(<< "Wrong type of database for this writer");
    return;
  }
  if (this->TableName.empty())
  {
    vtkErrorMacro(<< "No table name specified!");
    return;
  }

  // converting this table to SQLite will require two queries: one to create
  // the table, and another to populate its rows with data.
  std::string createTableQuery = "CREATE table ";
  createTableQuery += this->TableName;
  createTableQuery += "(";

  std::string insertPreamble = "INSERT into ";
  insertPreamble += this->TableName;
  insertPreamble += "(";

  // get the columns from the vtkTable to finish the query
  vtkIdType numColumns = this->GetInput()->GetNumberOfColumns();
  for (vtkIdType i = 0; i < numColumns; i++)
  {
    // get this column's name
    std::string columnName = this->GetInput()->GetColumn(i)->GetName();
    createTableQuery += columnName;
    insertPreamble += "'" + columnName + "'";

    // figure out what type of data is stored in this column
    std::string columnType = this->GetInput()->GetColumn(i)->GetClassName();

    if ((columnType.find("String") != std::string::npos) ||
      (columnType.find("Data") != std::string::npos) ||
      (columnType.find("Variant") != std::string::npos))
    {
      createTableQuery += " TEXT";
    }
    else if ((columnType.find("Double") != std::string::npos) ||
      (columnType.find("Float") != std::string::npos))
    {
      createTableQuery += " REAL";
    }
    else
    {
      createTableQuery += " INTEGER";
    }
    if (i == numColumns - 1)
    {