/**
* Updates the dataset values based on the scale info.
*
* @param chartDocument -- Current chart document.
* @param data -- Data for the current chart.
* @param dataset -- Dataset to be updated.
* @param row -- Curent row nuber in the data.
* @param column -- Current column number in the data.
* @param noRowNameSpecified -- Default row name if row name is not specified.
* @param noColumnName -- Default column name if column name is not specified.
* @param scale -- Scale to be used to modify the dataset.
*/
private void updateDatasetBasedOnScale(
final ChartDocument chartDocument,
final ChartTableModel data,
final DefaultCategoryDataset dataset,
final int row,
final int column,
final String noRowNameSpecified,
final String noColumnName,
final double scale) {
final String rawColumnName = JFreeChartUtils.getColumnName(data, column);
final String columnName = rawColumnName != null ? rawColumnName : noColumnName + column;
final Object rawRowName = JFreeChartUtils.getRawRowName(data, chartDocument, row);
final String rowName =
rawRowName != null ? String.valueOf(rawRowName) : (noRowNameSpecified + row);
final Object rawValue = data.getValueAt(row, column);
if (rawValue instanceof Number) {
final Number number = (Number) rawValue;
double value = number.doubleValue();
value *= scale;
dataset.setValue(value, rowName, columnName);
}
}
/**
* This method iterates through the rows and columns to populate a DefaultCategoryDataset. Since a
* CategoryDataset stores values based on a multikey hash we supply as the keys either the
* metadata column name or the column number and the metadata row name or row number as the keys.
*
* <p>As it's processing the data from the ChartTableModel into the DefaultCategoryDataset it
* applies the scale specified in the
*
* @param chartDocContext - Chart document context for the current chart.
* @param data - Data for the current chart.
* @param columnIndexArr - Contains column position information. When not null, we would get data
* from specified columns.
* @return DefaultCategoryDataset that can be used as a source for JFreeChart
*/
private DefaultCategoryDataset createDefaultCategoryDataset(
final ChartDocumentContext chartDocContext,
final ChartTableModel data,
final Integer[] columnIndexArr) {
final DefaultCategoryDataset dataset = new DefaultCategoryDataset();
final int rowCount = data.getRowCount();
final int colCount = data.getColumnCount();
final Configuration config = ChartBoot.getInstance().getGlobalConfig();
final String noRowNameSpecified =
config.getConfigProperty("org.pentaho.chart.namespace.row_name_not_defined"); // $NON-NLS-1$
final String noColumnName =
config.getConfigProperty(
"org.pentaho.chart.namespace.column_name_not_defined"); //$NON-NLS-1$
final ChartDocument chartDocument = chartDocContext.getChartDocument();
final double scale = JFreeChartUtils.getScale(chartDocument);
// Only if we have to separate datasets then do we do some column processing in the given data
// else we simply process all rows and all columns
if (columnIndexArr != null) {
final int columnIndexArrLength = columnIndexArr.length;
for (int row = 0; row < rowCount; row++) {
int columnIndexArrCounter = 0;
for (int column = 0; column < colCount; column++) {
if (columnIndexArrCounter < columnIndexArrLength) {
// if the current column is what we want in the dataset (based on column indexes in
// columnIndexArr),
// then process the data
// Else move to the next column
if (column == columnIndexArr[columnIndexArrCounter]) {
updateDatasetBasedOnScale(
chartDocument,
data,
dataset,
row,
column,
noRowNameSpecified,
noColumnName,
scale);
// Increment the counter so that we can process the next column in the columnIndexArr
columnIndexArrCounter++;
}
} else {
// if we have reached beyond the last element in the column index array then simply
// start processing
// the next row of data.
break;
}
}
}
}
// If we do not want to process entire data as is (without dividing the dataset)
// then simply process all the dataset
else {
for (int row = 0; row < rowCount; row++) {
for (int column = 0; column < colCount; column++) {
updateDatasetBasedOnScale(
chartDocument, data, dataset, row, column, noRowNameSpecified, noColumnName, scale);
}
}
}
return dataset;
}
