Bug 208412 Enhance Chart Engine to process grouped, uni-dimensional Data
chart/org.eclipse.birt.chart.reportitem/src/org/eclipse/birt/chart/reportitem/ChartReportItemPresentationBase.java
import org.eclipse.birt.chart.factory.Generator;
import org.eclipse.birt.chart.factory.IDataRowExpressionEvaluator;
import org.eclipse.birt.chart.factory.RunTimeContext;
import org.eclipse.birt.chart.log.ILogger;
import org.eclipse.birt.chart.log.Logger;
import org.eclipse.birt.chart.model.Chart;
import org.eclipse.birt.chart.model.attribute.Bounds;
import org.eclipse.birt.chart.reportitem.i18n.Messages;
import org.eclipse.birt.chart.reportitem.plugin.ChartReportItemPlugin;
import org.eclipse.birt.chart.script.ScriptHandler;
import org.eclipse.birt.chart.util.ChartUtil;
import org.eclipse.birt.chart.util.PluginSettings;
import org.eclipse.birt.core.exception.BirtException;
import org.eclipse.birt.report.engine.api.EngineConstants;
import org.eclipse.birt.report.engine.api.HTMLRenderContext;
import org.eclipse.birt.report.engine.api.HTMLRenderOption;
import org.eclipse.birt.report.engine.api.IRenderOption;
import org.eclipse.birt.report.engine.extension.IBaseResultSet;
import org.eclipse.birt.report.engine.extension.IQueryResultSet;
import org.eclipse.birt.report.engine.extension.ReportItemPresentationBase;
import org.eclipse.birt.report.engine.extension.Size;
import org.eclipse.birt.report.model.api.ExtendedItemHandle;
import org.eclipse.birt.report.model.api.extension.ExtendedElementException;
import org.eclipse.birt.report.model.api.extension.IReportItem;
import org.eclipse.emf.ecore.util.EcoreUtil;
/**
 * Base presentation implementation for Chart. This class can be extended for
 * various implementation.
 */
public class ChartReportItemPresentationBase extends ReportItemPresentationBase