?? chartholder.java
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/* ================================================================
* Cewolf : Chart enabling Web Objects Framework
* ================================================================
*
* Project Info: http://cewolf.sourceforge.net
* Project Lead: Guido Laures (guido@laures.de);
*
* (C) Copyright 2002, by Guido Laures
*
* This library is free software; you can redistribute it and/or modify it under the terms
* of the GNU Lesser General Public License as published by the Free Software Foundation;
* either version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307, USA.
*/
package de.laures.cewolf;
/**
* 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
*/
public interface ChartHolder {
/**
* 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.
* @return the chart object for this definition
* @throws DatasetProduceException if there could be no data produced for
* the cahrt
* @throws ConfigurationException if there is something wrong in the
* Cewolf configuration
* @throws PostProcessingException if a post processor failed to
* process the chart
*/
public Object getChart() throws DatasetProduceException, PostProcessingException, ChartValidationException;
/**
* 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.
* @return Object the dataset for this definition
* @throws DatasetProduceException if the dataset could not be produced
*/
public Object getDataset() throws DatasetProduceException;
}
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