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DynamicReports is an open source Java reporting library based on JasperReports. It allows to create dynamic report designs and it doesn't need a visual report designer.
You can very quickly create reports and produce documents that can be displayed, printed or exported into many popular formats such as PDF, Excel, Word and others.
/**
* DynamicReports - Free Java reporting library for creating reports dynamically
*
* Copyright (C) 2010 - 2016 Ricardo Mariaca
* http://www.dynamicreports.org
*
* This file is part of DynamicReports.
*
* DynamicReports 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 3 of the License, or
* (at your option) any later version.
*
* DynamicReports 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 DynamicReports. If not, see .
*/
package net.sf.dynamicreports.design.transformation.expressions;
import java.util.List;
import net.sf.dynamicreports.report.builder.expression.AbstractComplexExpression;
import net.sf.dynamicreports.report.constant.Constants;
import net.sf.dynamicreports.report.definition.DRICustomValues;
import net.sf.dynamicreports.report.definition.ReportParameters;
import net.sf.dynamicreports.report.definition.crosstab.DRICrosstab;
import net.sf.dynamicreports.report.definition.crosstab.DRICrosstabMeasure;
import net.sf.dynamicreports.report.definition.crosstab.DRICrosstabVariable;
import net.sf.dynamicreports.report.definition.expression.DRIComplexExpression;
import net.sf.dynamicreports.report.definition.expression.DRIExpression;
import net.sf.dynamicreports.report.exception.DRException;
/**
* @author Ricardo Mariaca ([email protected])
*/
public class CrosstabExpression extends AbstractComplexExpression {
private static final long serialVersionUID = Constants.SERIAL_VERSION_UID;
private DRIExpression expression;
public CrosstabExpression(DRICrosstab crosstab, DRIExpression expression) throws DRException {
this.expression = expression;
if (expression instanceof DRIComplexExpression) {
for (DRIExpression express : ((DRIComplexExpression) expression).getExpressions()) {
addExpression(express);
}
}
for (DRICrosstabVariable variable : crosstab.getVariables()) {
addExpression(variable);
}
for (DRICrosstabMeasure measure : crosstab.getMeasures()) {
if (measure.getExpression() instanceof DRICrosstabVariable) {
addExpression(measure.getExpression());
}
}
}
@SuppressWarnings("unchecked")
@Override
public T evaluate(List values, ReportParameters reportParameters) {
DRICustomValues customValues = (DRICustomValues) reportParameters.getParameterValue(DRICustomValues.NAME);
for (int i = 0; i < getExpressions().size(); i++) {
customValues.setSystemValue(getExpressions().get(i).getName(), values.get(i));
}
if (expression instanceof DRIComplexExpression) {
DRIComplexExpression express = (DRIComplexExpression) expression;
return (T) express.evaluate(values, reportParameters);
}
else {
return reportParameters.getValue(expression.getName());
}
}
@SuppressWarnings({ "rawtypes", "unchecked" })
@Override
public Class getValueClass() {
return expression.getValueClass();
}
}