franta-hg@1: /* ================================================================
franta-hg@1:  * Cewolf : Chart enabling Web Objects Framework
franta-hg@1:  * ================================================================
franta-hg@1:  *
franta-hg@1:  * Project Info:  http://cewolf.sourceforge.net
franta-hg@1:  * Project Lead:  Guido Laures (guido@laures.de);
franta-hg@1:  *
franta-hg@1:  * (C) Copyright 2002, by Guido Laures
franta-hg@1:  *
franta-hg@1:  * This library is free software; you can redistribute it and/or modify it under the terms
franta-hg@1:  * of the GNU Lesser General Public License as published by the Free Software Foundation;
franta-hg@1:  * either version 2.1 of the License, or (at your option) any later version.
franta-hg@1:  *
franta-hg@1:  * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
franta-hg@1:  * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
franta-hg@1:  * See the GNU Lesser General Public License for more details.
franta-hg@1:  *
franta-hg@1:  * You should have received a copy of the GNU Lesser General Public License along with this
franta-hg@1:  * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
franta-hg@1:  * Boston, MA 02111-1307, USA.
franta-hg@1:  */
franta-hg@1: 
franta-hg@1: package de.laures.cewolf;
franta-hg@1: 
franta-hg@1: /**
franta-hg@1:  * An object of this type represents a full descritption of a chart.
franta-hg@1:  * Therefore it is able to produce the chart and dataset object
franta-hg@1:  * resulting out of this definition.
franta-hg@1:  * @author  Guido Laures
franta-hg@1:  */
franta-hg@1: public interface ChartHolder {
franta-hg@1: 
franta-hg@1: 	/**
franta-hg@1: 	 * Returns a chart. The type of this object is dependant on the underlying
franta-hg@1: 	 * chart implementation. As of this version of Cewolf it is of type
franta-hg@1: 	 * org.jfree.chart.JFreeChart.
franta-hg@1: 	 * @return the chart object for this definition
franta-hg@1: 	 * @throws DatasetProduceException if there could be no data produced for
franta-hg@1: 	 * the cahrt
franta-hg@1: 	 * @throws ConfigurationException if there is something wrong in the
franta-hg@1: 	 * Cewolf configuration
franta-hg@1: 	 * @throws PostProcessingException if a post processor failed to 
franta-hg@1: 	 * process the chart
franta-hg@1: 	 */
franta-hg@1:     public Object getChart() throws DatasetProduceException, PostProcessingException, ChartValidationException;
franta-hg@1:     
franta-hg@1: 	/**
franta-hg@1: 	 * Returns the dataset produced when using this definition.The type of this object is dependant on the underlying
franta-hg@1: 	 * chart implementation. As of this version of Cewolf it is of type
franta-hg@1: 	 * org.jfree.data.Dataset.
franta-hg@1: 	 * @return Object the dataset for this definition
franta-hg@1: 	 * @throws DatasetProduceException if the dataset could not be produced
franta-hg@1: 	 */
franta-hg@1:     public Object getDataset() throws DatasetProduceException;
franta-hg@1:     
franta-hg@1: }