de.laures.cewolf
Interface ChartHolder

All Known Implementing Classes:

AbstractChartDefinition, ChartImageDefinition

public interface ChartHolder

An object of this type represents a full descritption of a chart. Therefore it is able to produce the chart and dataset object resulting out of this definition.

Author:

Guido Laures

Method Summary

java.lang.Object	getChart() Returns a chart.
java.lang.Object	getDataset() Returns the dataset produced when using this definition.The type of this object is dependant on the underlying chart implementation.

Method Detail

getChart

public java.lang.Object getChart()
                          throws DatasetProduceException,
                                 PostProcessingException,
                                 ChartValidationException

Returns a chart. The type of this object is dependant on the underlying chart implementation. As of this version of Cewolf it is of type org.jfree.chart.JFreeChart.

Returns:

the chart object for this definition

Throws:

DatasetProduceException - if there could be no data produced for the cahrt

ConfigurationException - if there is something wrong in the Cewolf configuration

PostProcessingException - if a post processor failed to process the chart

ChartValidationException

getDataset

public java.lang.Object getDataset()
                            throws DatasetProduceException

Returns the dataset produced when using this definition.The type of this object is dependant on the underlying chart implementation. As of this version of Cewolf it is of type org.jfree.data.Dataset.

Returns:

Object the dataset for this definition

Throws:

DatasetProduceException - if the dataset could not be produced