sub report not displayed.

[lynn fann]

Im trying to generate the report in pdf format. The report consist of 2 sub report ( 1 sub report required values to be passed in, the other one does not required any values to be passed in)

When i generate the file, the subreport is not included. Below is my code and jrxml

Servlet codes:

   
     JasperReport jasperReport =JasperReport) JRLoader.loadObject("mainRep.jasper");

     List<MainBean> mainBeanList = new ArrayList<MainBean>();
     List<SubBean> subList = new ArrayList<SubBean>();
     Map jParam = new HashMap();

     String custInfoName="test";

	for(int pv=0; pv<pdts.size(); pv++){
		 PModel model =(PModel )pdts.get(pv);
		 if(updts[pv].equals(model.getPlan())){
		      name=model.getName();
		      desc=model.getDescription();
		       detail=model.getDetails();
		     SubBean subBean= new SubBean(name,desc,detail);
		     subList.add(subBean);                        
		 }
	}    


	MainBean mainBean = new MainBean(custInfoName, new JRBeanCollectionDataSource(subList));  
     mainBeanList.add(mainBean);             

jParam.put("ds_subreport",getDsTemplate()); // from the method, i will get the jasperReport for subreport. 	

 ByteArrayOutputStream pdfStream = new ByteArrayOutputStream();
 net.sf.jasperreports.engine.JasperPrint jasperPrint = JasperFillManager.fillReport(jasperReport, jParam, new JRBeanCollectionDataSource(mainBeanList));
 JasperExportManager.exportReportToPdfStream(jasperPrint, pdfStream);
 pdfStreamByteArray = pdfStream.toByteArray();
 

Jrxml:

   
<jasperReport name="report name" pageWidth="595" pageHeight="842" columnWidth="535" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20">
	<parameter name="ds_subreport" class="net.sf.jasperreports.engine.JasperReport" isForPrompting="false"/>
	<field name="custInfoName" class="java.lang.String"/>
	<field name="dsSub" class="net.sf.jasperreports.engine.data.JRBeanCollectionDataSource"/>
	<background>
		<band/>
	</background>
	<title>
		<band height="20">
			<staticText>
				<reportElement x="0" y="0" width="555" height="20"/>
				<textElement textAlignment="Center">
					<font size="14"/>
				</textElement>
				<text><![CDATA[Letter]]></text>
			</staticText>
		</band>
	</title>
	<pageHeader>
		<band height="6"/>
	</pageHeader>
	<columnHeader>
		<band/>
	</columnHeader>
	<detail>
	<band height="727">
		<staticText>
			<reportElement x="0" y="20" width="134" height="15"/>
			<box leftPadding="2" rightPadding="2"/>
			<textElement>
				<font  size="8"/>
			</textElement>
			<text><![CDATA[Name:]]></text>
		</staticText>
	<textField hyperlinkType="None">
		<reportElement x="134" y="20" width="230" height="15"/>
		<box leftPadding="2" rightPadding="2"/>
		<textElement>
			<font  size="8"/>
		</textElement>
		<textFieldExpression class="java.lang.String"><![CDATA[$F{custInfoName}]]></textFieldExpression>
	</textField>			

	<subreport>
	       <reportElement x="0" y="558" width="261" height="18"/>
	       <dataSourceExpression><![CDATA[$F{dsSub}]]></dataSourceExpression>
	       <subreportExpression class="net.sf.jasperreports.engine.JasperReport"><![CDATA[$P{ds_subreport}]]></subreportExpression>
	</subreport>
			
	<subreport>
	       <reportElement x="0" y="581" width="555" height="100"/>
                       <subreportExpression class="net.sf.jasperreports.engine.JasperReport"><![CDATA["emSubreport.jasper"]]></subreportExpression>
	</subreport>			
           </band>
      </detail>
</jasperReport>

 

Where have i gone wrong?

[Martin Ronckevic]

Hi,

add datasource parameter like this:

<dataSourceExpression><![CDATA[new net.sf.jasperreports.engine.JREmptyDataSource()]]></dataSourceExpression>

I know I am replying more than a year later, but somebody may find it helpful, as I would couple of minutes ago. Worked on jasperreports 3.7.0.

Martin

[Martijn Verburg]

Hi Martin, welcome to Javaranch and thanks for your answer!

[Alain Ramos]

Hi , another solution would be passing the subreport datasource as java.util.List and then create de JRBeanCollectionDatasource like the example below

<dataSourceExpression><![CDATA[new net.sf.jasperreports.engine.data.JRBeanCollectionDataSource($F{dsSub})]]></dataSourceExpression>


it works for me