[#4657] - JRAbstractChartCustomizer init method ordering

In SplineCustomizer.java:

public abstract class SplineCustomizer
extends JRAbstractChartCustomizer {

@Override
public void init( JRBaseFiller baseFiller, JRFillChart chart ) {
super.init( baseFiller, chart );

setBaseFiller( baseFiller );
setChart( chart );
}

public void customize( JFreeChart jFreeChart, JRChart jrChart ) {
configureTrendLine();
}

/**
* Provides subclasses with an opportunity to configure the chart,
* indicate whether the trend line should be drawn, and so forth.
*/
protected abstract void configureTrendLine() throws JRRuntimeException;
}

The method configureTrendLine() cannot be called within the init() method. However, the init() method is where the method should be called. The method has the following implementation:

protected void configureTrendLine()
throws JRRuntimeException {
String timeframe = getParameterValue( "TimeFrame" ).toString();
int datapoints = HOURS_PER_DAY;

if( "incident_hour".equalsIgnoreCase( timeframe ) ) {
datapoints = setTimeFrameHour();
}
else if( "incident_day".equalsIgnoreCase( timeframe ) ) {
datapoints = setTimeFrameDay();
}
else if( "incident_week".equalsIgnoreCase( timeframe ) ) {
datapoints = setTimeFrameWeek();
}
else if( "incident_month".equalsIgnoreCase( timeframe ) ) {
datapoints = setTimeFrameMonth();
}
else if( "incident_year".equalsIgnoreCase( timeframe ) ) {
datapoints = setTimeFrameYear();
}

// Remove the trend line when too few data points are present.
//
setRemoveTrendLine( datapoints < MIN_DATAPOINTS_FOR_TREND );
}

This is initialization, but cannot be included in the init() method because getParameterValue( ... ) fails to return a value. It works as shown, but not within the init() method. This is because the parameter map is not initialized until after the init() method completes.

Thanks. I look forward to seeing the release where this is fixed. :-)