/*
* 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.builders;
import java.util.Iterator;
import java.util.List;
import net.sf.jasperreports.charts.design.JRDesignCategoryDataset;
import net.sf.jasperreports.charts.design.JRDesignCategorySeries;
import net.sf.jasperreports.charts.design.JRDesignPieDataset;
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 ar.com.fdvs.dj.core.DJException;
import ar.com.fdvs.dj.domain.DJChart;
import ar.com.fdvs.dj.domain.entities.columns.AbstractColumn;
public class DataSetFactory {
public static JRDesignChartDataset getDataset(DJChart djchart, JRDesignGroup group, JRDesignGroup parentGroup, List vars){
JRDesignChartDataset dataSet = null;
byte chartType = djchart.getType();
if (chartType == DJChart.PIE_CHART){
dataSet = createPieDataset(group,parentGroup, vars, djchart);
}
else if (chartType == DJChart.BAR_CHART) {
dataSet = createBarDataset(group,parentGroup, vars, djchart);
}
// else if (chartType == DJChart.LINE_CHART) {
// dataSet = createLineDataset(group,parentGroup, vars, djchart);
// }
if (dataSet == null){
throw new DJException("Error creating dataset for chart, no valid dataset type.");
}
return dataSet;
}
/**
* Use vars[0] as value, user vars[1] as series
* @param group
* @param parentGroup
* @param vars
* @param djchart
* @return
*/
protected static JRDesignChartDataset createLineDataset(JRDesignGroup group, JRDesignGroup parentGroup, List vars, DJChart djchart) {
JRDesignCategoryDataset data = new JRDesignCategoryDataset(null);
// for (Iterator iterator = vars.iterator(); iterator.hasNext();) {
JRDesignCategorySeries serie = new JRDesignCategorySeries();
// JRDesignVariable var = (JRDesignVariable) iterator.next();
JRDesignVariable var = (JRDesignVariable) vars.get(0);
JRDesignVariable var1 = (JRDesignVariable) vars.get(0);
if (vars.size() > 1)
var1 = (JRDesignVariable) vars.get(1);
//And use it as value for each bar
JRDesignExpression varExp = getExpressionFromVariable(var);
JRExpression varExp1 = var1.getExpression();
serie.setValueExpression(varExp);
//The key for each bar
JRExpression exp2 = group.getExpression();
JRDesignExpression exp3 = new JRDesignExpression();
int index = vars.indexOf(var);
AbstractColumn col = (AbstractColumn) djchart.getColumns().get(index);
exp3.setText("\"" + col.getTitle() + "\"");
exp3.setValueClass(String.class);
//Here you can set subgroups of bars
serie.setCategoryExpression(exp2);
// serie.setCategoryExpression(varExp1);
serie.setLabelExpression(exp2);
serie.setSeriesExpression(varExp1);
data.addCategorySeries(serie);
// }
setResetStyle(data, group, parentGroup);
return data;
}
protected static JRDesignChartDataset createBarDataset(JRDesignGroup group, JRDesignGroup parentGroup, List vars, DJChart djchart) {
JRDesignCategoryDataset data = new JRDesignCategoryDataset(null);
for (Iterator iterator = vars.iterator(); iterator.hasNext();) {
JRDesignCategorySeries serie = new JRDesignCategorySeries();
JRDesignVariable var = (JRDesignVariable) iterator.next();
//And use it as value for each bar
JRDesignExpression varExp = getExpressionFromVariable(var);
serie.setValueExpression(varExp);
//The key for each bar
JRExpression exp2 = group.getExpression();
JRDesignExpression exp3 = new JRDesignExpression();
int index = vars.indexOf(var);
AbstractColumn col = (AbstractColumn) djchart.getColumns().get(index);
exp3.setText("\"" + col.getTitle() + "\"");
exp3.setValueClass(String.class);
//Here you can set subgroups of bars
if (!djchart.getOptions().isUseColumnsAsCategorie()){
serie.setCategoryExpression(exp3);
serie.setLabelExpression(exp2);
serie.setSeriesExpression(exp2);
} else {
//FIXED: due to https://sourceforge.net/forum/message.php?msg_id=7396861
serie.setCategoryExpression(exp2);
serie.setLabelExpression(exp3);
serie.setSeriesExpression(exp3);
}
data.addCategorySeries(serie);
}
setResetStyle(data, group, parentGroup);
return data;
}
protected static JRDesignChartDataset createPieDataset(JRDesignGroup group, JRDesignGroup parentGroup, List vars, DJChart djchart) {
JRDesignPieDataset data = new JRDesignPieDataset(null);
for (Iterator iterator = vars.iterator(); iterator.hasNext();) {
JRDesignVariable var = (JRDesignVariable) iterator.next();
//And transform it in the value for each pie slice
JRDesignExpression expression = getExpressionFromVariable(var);
data.setValueExpression(expression);
break; //PIE data set uses only one series
}
//The key for each pie slice
data.setKeyExpression(group.getExpression());
setResetStyle(data, group, parentGroup);
return data;
}
/**
* Generates an expression from a variable
* @param var The variable from which to generate the expression
* @return A expression that represents the given variable
*/
private static JRDesignExpression getExpressionFromVariable(JRDesignVariable var){
JRDesignExpression exp = new JRDesignExpression();
exp.setText("$V{" + var.getName() + "}");
exp.setValueClass(var.getValueClass());
return exp;
}
private static void setResetStyle(JRDesignChartDataset dataset, JRDesignGroup group, JRDesignGroup parentGroup){
//When to start a new chart? When the group's parent changes
dataset.setResetGroup(parentGroup);
if (dataset.getResetGroup().equals(group))
dataset.setResetType(JRDesignVariable.RESET_TYPE_REPORT);
else
dataset.setResetType(JRDesignVariable.RESET_TYPE_GROUP);
}
}