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DynamicJasper (DJ) is an API that hides the complexity of Jasper Reports, it helps developers to save time when designing simple/medium complexity reports generating the layout of the report elements automatically. It creates reports dynamically, defining at runtime the columns, column width (auto width), groups, variables, fonts, charts, crosstabs, sub reports (that can also be dynamic), page size and everything else that you can define at design time. DJ keeps full compatibility with Jasper Reports since it's a tool that helps create reports programmatically in a easy way (it only interferes with the creation of the report design doing the layout of the elements). You can use the classic .jrxml files as templates while the content and layout of the report elements are handled by the DJ API. http://dynamicjasper.com

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/*
 * DynamicJasper: A library for creating reports dynamically by specifying
 * columns, groups, styles, etc. at runtime. It also saves a lot of development
 * time in many cases! (http://sourceforge.net/projects/dynamicjasper)
 *
 * Copyright (C) 2008  FDV Solutions (http://www.fdvsolutions.com)
 *
 * 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 *
 */

package ar.com.fdvs.dj.domain.chart.dataset;

import ar.com.fdvs.dj.domain.DynamicJasperDesign;
import ar.com.fdvs.dj.domain.entities.Entity;
import ar.com.fdvs.dj.domain.entities.columns.AbstractColumn;
import ar.com.fdvs.dj.domain.entities.columns.PropertyColumn;
import net.sf.jasperreports.charts.design.JRDesignPieDataset;
import net.sf.jasperreports.charts.design.JRDesignPieSeries;
import net.sf.jasperreports.engine.JRExpression;
import net.sf.jasperreports.engine.design.JRDesignChartDataset;
import net.sf.jasperreports.engine.design.JRDesignExpression;
import net.sf.jasperreports.engine.design.JRDesignGroup;
import net.sf.jasperreports.engine.design.JRDesignVariable;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;

public class PieDataset extends AbstractDataset {
	private static final long serialVersionUID = Entity.SERIAL_VERSION_UID;
	
	private PropertyColumn key = null;
	private List series = new ArrayList();
		
	/**
	 * Sets the key column.
	 *
	 * @param key the key column
	 **/
	public void setKey(PropertyColumn key) {
		this.key = key;
	}
	
	/**
	 * Returns the key column.
	 *
	 * @return	the key column
	 **/
	public PropertyColumn getKey() {
		return key;
	}
	
	/**
	 * Adds the specified serie column to the dataset.
	 * 
	 * @param column the serie column
	 **/
	public void addSerie(AbstractColumn column) {
		series.add(column);
	}
	
	/**
	 * Removes the specified serie column from the dataset.
	 * 
	 * @param column the serie column	 
	 **/
	public void removeSerie(AbstractColumn column) {
		series.remove(column);
	}

	/**
	 * Removes all defined series.
	 */
	public void clearSeries() {
		series.clear();
	}
	
	/**
	 * Returns a list of all the defined series.  Every entry in the list is of type AbstractColumn.
	 * If there are no defined series this method will return an empty list, not null. 
	 *
	 * @return	the list of series
	 **/
	public List getSeries()	{
		return series;
	}
	
	public JRDesignChartDataset transform(DynamicJasperDesign design, String name, JRDesignGroup group, JRDesignGroup parentGroup, Map vars) {
		JRDesignPieDataset data = new JRDesignPieDataset(null);

		for (AbstractColumn sery : series) {
			JRDesignPieSeries serie = new JRDesignPieSeries();

			//And use it as value for each bar
			JRDesignExpression varExp = getExpressionFromVariable((JRDesignVariable) vars.get(sery));
			serie.setValueExpression(varExp);

			//The key for each bar
			JRExpression exp2 = group.getExpression();
			serie.setKeyExpression(exp2);

			data.addPieSeries(serie);
		}
		
		setResetStyle(data, group, parentGroup);

		return data;
	}

	public List getColumns() {
		return series;
	}

	public PropertyColumn getColumnsGroup() {
		return key;
	}

}