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