Only last instance of custom component repeated

[alex.grinnin]

 I developed custom component for barcode rendering. If I use only one instance it works properly. But if I want to pass data from my datasource I getting incorrect view - only last instance of barcode was rendered. Whereas common rendering text

 

 

My datasource:

 

public class ListDataSource implements  JRDataSource

{

   private int index = -1;

 

  private String[][] data =

            {

                    {"text PDf417", "PDF417"},

                    {"text Code128","Code128"},

            };

 

    @Override

    public boolean next() throws JRException

    {

        index++;

        return (index < data.length);

    }

 

    @Override

    public Object getFieldValue(JRField field) throws JRException

    {

        Object value = null;

        String fieldName = field.getName().toLowerCase();

        if("codetext".equals(fieldName))

        {

            value = data[index][0];

        }

      else  if("symbology".equals(fieldName))

        {

            value = data[index][1];

        }

        return value;

    }

}

 

My jrxml file:

 

<?xml version="1.0" encoding="UTF-8"?>

<jasperReport

        xmlns="http://jasperreports.sourceforge.net/jasperreports"

        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

        xsi:schemaLocation="http://jasperreports.sourceforge.net/jasperreports http://jasperreports.sourceforge.net/xsd/jasperreport.xsd"

        name="DataSource" pageWidth="595" pageHeight="842" columnWidth="515" leftMargin="40" rightMargin="40"

        topMargin="50" bottomMargin="50">

    <field name="codetext" class="java.lang.String"/>

    <field name="symbology" class="java.lang.String"/>

    <detail>

        <band height="200">

            <textField isStretchWithOverflow="true">

                <reportElement positionType="Float" x="315" y="4" width="100" height="150"/>

                <textElement/>

                <textFieldExpression class="java.lang.String"><![CDATA[$F{codetext}]]></textFieldExpression>

            </textField>

            <textField isStretchWithOverflow="true">

                <reportElement positionType="Float" x="415" y="4" width="100" height="150"/>

                <textElement/>

                <textFieldExpression class="java.lang.String"><![CDATA[$F{symbology}]]></textFieldExpression>

            </textField>

            <componentElement>

                <reportElement x="10" y="30" width="300" height="100"/>

                <as:myBarcodeComponent xmlns:as="http://sourceforge.net/jasperreports/components/alex"

                                           xsi:schemaLocation= "http://jasperreports.sourceforge.net/jasperreports/components/alex alex-components.xsd">

                    <as:barCodeAttributes>

                        <as:codeExpression><![CDATA[$F{codetext}]]></as:codeExpression>

                        <as:symbologyExpression><![CDATA[$F{symbology}]]></as:symbologyExpression>

                    </as:barCodeAttributes>

                </as:myBarcodeComponent>

            </componentElement>

            <line>

                <reportElement positionType="Float" x="0" y="153" width="515" height="1" forecolor="#808080"/>

            </line>

        </band>

    </detail>

</jasperReport>

 

 

Test class

 

 try

        {

            String jrxmlFilePath =  "DataSource.jrxml";

            String jasperFileName = "DataSource.jasper";

            String pdfFileName =  "DataSource.pdf";

 

            JasperCompileManager.compileReportToFile(jrxmlFilePath, jasperFileName);

 

            JRPdfExporter exporter = new JRPdfExporter();

 

            JasperPrint jasperPrint =  JasperFillManager.fillReport(jasperFileName, null, dataSource );

            ExporterInput exporterInput = new SimpleExporterInput(jasperPrint);

            exporter.setExporterInput(exporterInput);

            PdfExporterConfiguration pdfExporterConfiguration = new SimplePdfExporterConfiguration();

            exporter.setConfiguration(pdfExporterConfiguration);

 

            File saveToFile = new File(pdfFileName);

            OutputStream outputStream = new FileOutputStream(saveToFile);

            SimpleOutputStreamExporterOutput outputStreamExporterOutput = new SimpleOutputStreamExporterOutput(outputStream);

            exporter.setExporterOutput(outputStreamExporterOutput);

 

            exporter.exportReport();

 

            System.out.println("Report exported to " + saveToFile.getAbsolutePath());

            System.out.println("Finished.");

        } catch (Exception e)

        {

            e.printStackTrace();

        }

        

As result I get two lines - first for PDF417 and second for Code128.

 But for both lines only last barcode from list in data source was rendered. 

  Where I should search mistake in my implementation?

 Thanks in advance.