How to use

getDataset

method

in

org.jfree.chart.entity.CategoryItemEntity

protected Dataset getEntityDataset(ChartEntity entity)
{
  Dataset dataset = null;
  if (entity instanceof CategoryItemEntity)
  {
    dataset = ((CategoryItemEntity) entity).getDataset();
  }
  else if (entity instanceof XYItemEntity)
  {
    dataset = ((XYItemEntity) entity).getDataset();
  }
  return dataset;
}

  public void mouseReleased(MouseEvent e)
  {
    if(e.isPopupTrigger())
    {
      ChartEntity ce = chartPanel.getEntityForPoint(e.getX(), e.getY());
      List messages = null;
      if(ce instanceof CategoryItemEntity)
      {
        CategoryItemEntity entity = (CategoryItemEntity)ce;
        GroupedCategoryDataset dataset = (GroupedCategoryDataset)entity.getDataset();
        messages = dataset.getList(entity.getRowKey(), entity.getColumnKey());
      }
      if(ce instanceof PieSectionEntity)
      {
        PieSectionEntity entity = (PieSectionEntity)ce;
        messages = dataset_total.getList(entity.getSectionKey(), entity.getPieIndex());
      }
      if(messages != null)
      {
        MessageFilterMenu mpopup = new MessageFilterMenu(tooltab.getPlugin(), (Message[])messages.toArray(new Message[messages.size()]));
        mpopup.show(e.getComponent(), e.getX(), e.getY());
      }
    }
  }
}

CategoryItemEntity categoryItemEntity = (CategoryItemEntity) entity;
if ( keyListArray == null ) {
 keyListArray = new ArrayList( categoryItemEntity.getDataset().getRowKeys() );

private void populateCategoryItemEntity( CategoryItemEntity categoryItemEntity, List seriesListArray ) {
 if ( seriesListArray == null ) {
  seriesListArray = new ArrayList( categoryItemEntity.getDataset().getRowKeys() );

/**
 * decode CategoryItemEntity into key-value pair of Area's componentScope.
 * @param area the Area where the final attribute is set
 * @param info the CategoryItemEntity to be decoded.
 */
private void decodeCategoryInfo(Area area, CategoryItemEntity info) {
  if (info == null) {
    return;
  }
  
  CategoryDataset dataset = info.getDataset();
  Comparable category = info.getColumnKey();
  Comparable series = info.getRowKey();
  
  area.setAttribute("series", series);
  area.setAttribute("category", category);
  
  if (dataset instanceof GanttCategoryDataset) {
    final GanttCategoryDataset gd = (GanttCategoryDataset) dataset;
    area.setAttribute("start", gd.getStartValue(series, category));
    area.setAttribute("end", gd.getEndValue(series, category));
    area.setAttribute("percent", gd.getPercentComplete(series, category));
  } else {
    area.setAttribute("value", dataset.getValue(series, category));
  }
}