Hi everyone,
I am new in iReport & JasperReports. I want to pass more than one lists in
iReport. I have searched and realised that the best practise is using
subreports.
So, I have created a datasource (datasource2) for the master report and
another one for my subreport (datasource1). I fill these datasource using
the following code.
"
public void generateListReport(TestReport2 testReport2, List MyList,
String parameter,String JasperPath,String JasperPath2) throws IOException,
JRException{
ArrayList WholeList = new ArrayList();
ArrayList DTList = new ArrayList();
ArrayList myTestReport = new ArrayList();
Map parameters = new HashMap();
myTestReport.add(testReport2);
facesContext = FacesContext.getCurrentInstance();
ExternalContext ctx = facesContext.getExternalContext();
HttpServletResponse response = (HttpServletResponse)
ctx.getResponse();
response.setContentType("application/pdf");
System.out.println("MyList : "+MyList);
System.out.println("testReport2 : "+testReport2);
System.out.println("myTestReport : "+myTestReport);
for (int i = 0; i < MyList.size(); i++) {
myListArray myList = new myListArray(
(String) ((List) MyList.get(i)).get(0),
(String) ((List) MyList.get(i)).get(1),
(String) ((List) MyList.get(i)).get(2));
DTList.add(myList);
}
WholeList.add(DTList);
WholeList.add(myTestReport);
System.out.println("datasource 1 filled with WholeList : " +
WholeList);
String reportFileName = ((ServletContext)
ctx.getContext()).getRealPath(JasperPath);
String reportFileName2 = ((ServletContext)
ctx.getContext()).getRealPath(JasperPath2);
JasperReport jasperReport,subReport;
try {
subReport = (JasperReport)
JRLoader.loadObject(reportFileName2);
JRDataSource dataSource1 = new
myListArrayDatasource().create(subReport, DTList);
parameters.put("dataSource1", dataSource1);
parameters.put("subReport", subReport);
JasperPrint jasperPrint =
JasperFillManager.fillReport(subReport, parameters,
dataSource1);
System.out.println("SubReport is filled!");
} catch (JRException e) {
System.out.println("SubReport is not filled!");
e.printStackTrace();
}
try {
jasperReport = (JasperReport)
JRLoader.loadObject(reportFileName);
JRDataSource dataSource2 = new
TestReportDatasource().create(jasperReport, myTestReport);
JasperPrint jasperPrint2 =
JasperFillManager.fillReport(jasperReport, parameters,
dataSource2);
System.out.println("Report is filled!");
try {
JasperExportManager.exportReportToPdfStream(jasperPrint2,response.getOutputStream());
} catch (Exception e1) {
e1.printStackTrace();
}
} catch (JRException e) {
System.out.println("Report is not filled!");
e.printStackTrace();
}
facesContext.responseComplete();
}
"
"TestReportDatasource.java":
"
package reports;
import java.util.ArrayList;
import net.sf.jasperreports.engine.JRDataSource;
import net.sf.jasperreports.engine.JRException;
import net.sf.jasperreports.engine.JRField;
import net.sf.jasperreports.engine.JRParameter;
import net.sf.jasperreports.engine.JasperReport;
import net.sf.jasperreports.engine.data.JRAbstractBeanDataSourceProvider;
import net.sf.jasperreports.engine.data.JRBeanCollectionDataSource;
public class TestReportDatasource extends
JRAbstractBeanDataSourceProvider {
public TestReportDatasource() {
super(TestReport.class);
}
public JRField[] getFields(JasperReport report) throws JRException {
if (report != null) {
System.out.println(report);
JRParameter[] params = report.getParameters();
for (int i = 0; i < params.length; ++i) {
System.out.println(params.getName() + " "
+ params.getDefaultValueExpression());
}
String[] properties = report.getPropertyNames();
for (int i = 0; i < properties.length; ++i) {
System.out.println(properties + " = "
+ report.getProperty(properties));
}
}
return super.getFields(report);
}
public JRDataSource create(JasperReport report) throws JRException {
ArrayList list = new ArrayList();
return new JRBeanCollectionDataSource(list);
}
public JRDataSource create(JasperReport report, ArrayList list)
throws JRException {
return new JRBeanCollectionDataSource(list);
}
public void dispose(JRDataSource dataSource) throws JRException {
// nothing to do
}
}
"
"myListArrayDatasource.java":
"
package reports;
import java.util.ArrayList;
import net.sf.jasperreports.engine.JRDataSource;
import net.sf.jasperreports.engine.JRException;
import net.sf.jasperreports.engine.JRField;
import net.sf.jasperreports.engine.JRParameter;
import net.sf.jasperreports.engine.JasperReport;
import net.sf.jasperreports.engine.data.JRAbstractBeanDataSourceProvider;
import net.sf.jasperreports.engine.data.JRBeanCollectionDataSource;
public class myListArrayDatasource extends
JRAbstractBeanDataSourceProvider {
public myListArrayDatasource() {
super(myListArray.class);
}
public JRField[] getFields(JasperReport report) throws JRException {
if (report != null) {
System.out.println(report);
JRParameter[] params = report.getParameters();
for (int i = 0; i < params.length; ++i) {
System.out.println(params.getName() + " "
+ params.getDefaultValueExpression());
}
String[] properties = report.getPropertyNames();
for (int i = 0; i < properties.length; ++i) {
System.out.println(properties + " = "
+ report.getProperty(properties));
}
}
return super.getFields(report);
}
public JRDataSource create(JasperReport report) throws JRException {
ArrayList list = new ArrayList();
return new JRBeanCollectionDataSource(list);
}
public JRDataSource create(JasperReport report, ArrayList list)
throws JRException {
return new JRBeanCollectionDataSource(list);
}
public void dispose(JRDataSource dataSource) throws JRException {
// nothing to do
}
}
"
I declare a parameter dataSource1 and subReport in iReport *.jrxml file
and, using the iReport's subreport wizard I connect the subreport(two
objects,one for testing the connection via parameter "dataSource1" and
another for testing parameter "subReport") with the master report.
I cannot successfully fill the subreport in the master report.
I would appreciate any help!
Thank you in advance.
