Problems with images-JRTableModelDataSource

[Mange]

I have a problem getting an image per row in detail.

 

I have created my own tableModelwhere I define the columns as String, Object

 

I then use setValueAT to insert 2 buffered images.

 

I get a ClassCastException when I try to fill the report.

 

jasperPrint = JasperFillManager.fillReport(jasperReport, param, new JRTableModelDataSource(table.getModel()));

 

TIA

 

PS. If I change the report to java.awt.Image the report doesn't compile.

 

PPS. I tried to just insert a direct path in my table instead of BI and it worked. Howerver, I will create charts as BI per row in my table.

 

--- java ---

Code:

static class MyTableModel extends AbstractTableModel {
private String[] columnNames = {"Field",
                                "image2"};
private Object[][] data = {
                           {"First Line", new Object()},
                           {"Second Line", new Object()}
                          };
public void setValueAt(Object value, int row, int col) {
   data[row][col] = value;
   fireTableCellUpdated(row, col);
   }
}

--- jrxml ---

Code:

[code] <parameter name="image1" isForPrompting="true" class="java.lang.Object"/> <image scaleImage="RetainShape" evaluationTime="Now" hyperlinkType="None" hyperlinkTarget="Self" > <reportElement x="4" y="33" width="376" height="162" key="image-1"/> <box topBorder="None" topBorderColor="#000000" leftBorder="None" leftBorderColor="#000000" rightBorder="None" rightBorderColor="#000000" bottomBorder="None" bottomBorderColor="#000000"/> <graphicElement stretchType="NoStretch" pen="4Point" fill="Solid" /> <imageExpression class="java.lang.String"><![CDATA[$F{image2}]]></imageExpression> </image>

--- error ---

Code:

[code] java.lang.ClassCastException at Simple_Report_1158667614968_767996.evaluate(Simple_Report_1158667614968_767996.java:167) at net.sf.jasperreports.engine.fill.JREvaluator.evaluate(JREvaluator.java:172) at net.sf.jasperreports.engine.fill.JRCalculator.evaluate(JRCalculator.java:539) at net.sf.jasperreports.engine.fill.JRCalculator.evaluate(JRCalculator.java:507) at net.sf.jasperreports.engine.fill.JRFillElement.evaluateExpression(JRFillElement.java:807) at net.sf.jasperreports.engine.fill.JRFillImage.evaluateImage(JRFillImage.java:447)class java.awt.image.BufferedImage at net.sf.jasperreports.engine.fill.JRFillImage.evaluate(JRFillImage.java:430) at net.sf.jasperreports.engine.fill.JRFillElementContainer.evaluate(JRFillElementContainer.java:277) at net.sf.jasperreports.engine.fill.JRFillBand.evaluate(JRFillBand.java:399) at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillColumnBand(JRVerticalFiller.java:1289) at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillDetail(JRVerticalFiller.java:631) at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillReportStart(JRVerticalFiller.java:228) at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillReport(JRVerticalFiller.java:128) at net.sf.jasperreports.engine.fill.JRBaseFiller.fill(JRBaseFiller.java:758) at net.sf.jasperreports.engine.fill.JRBaseFiller.fill(JRBaseFiller.java:685) at net.sf.jasperreports.engine.fill.JRFiller.fillReport(JRFiller.java:89) at net.sf.jasperreports.engine.JasperFillManager.fillReport(JasperFillManager.java:601) at jaspertest1.JasperReportsIntro.main(JasperReportsIntro.java:46) NESTED BY : java.lang.ClassCastException at Simple_Report_1158667614968_767996.evaluate(Simple_Report_1158667614968_767996.java:167) at net.sf.jasperreports.engine.fill.JREvaluator.evaluate(JREvaluator.java:172) at net.sf.jasperreports.engine.fill.JRCalculator.evaluate(JRCalculator.java:539) at net.sf.jasperreports.engine.fill.JRCalculator.evaluate(JRCalculator.java:507) at net.sf.jasperreports.engine.fill.JRFillElement.evaluateExpression(JRFillElement.java:807) at net.sf.jasperreports.engine.fill.JRFillImage.evaluateImage(JRFillImage.java:447) at net.sf.jasperreports.engine.fill.JRFillImage.evaluate(JRFillImage.java:430) at net.sf.jasperreports.engine.fill.JRFillElementContainer.evaluate(JRFillElementContainer.java:277) at net.sf.jasperreports.engine.fill.JRFillBand.evaluate(JRFillBand.java:399) at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillColumnBand(JRVerticalFiller.java:1289) at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillDetail(JRVerticalFiller.java:631) at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillReportStart(JRVerticalFiller.java:228) at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillReport(JRVerticalFiller.java:128) at net.sf.jasperreports.engine.fill.JRBaseFiller.fill(JRBaseFiller.java:758) at net.sf.jasperreports.engine.fill.JRBaseFiller.fill(JRBaseFiller.java:685) at net.sf.jasperreports.engine.fill.JRFiller.fillReport(JRFiller.java:89) at net.sf.jasperreports.engine.JasperFillManager.fillReport(JasperFillManager.java:601) at jaspertest1.JasperReportsIntro.main(JasperReportsIntro.java:46) NESTED BY : net.sf.jasperreports.engine.fill.JRExpressionEvalException: Error evaluating expression : Source text : $F{image2} at net.sf.jasperreports.engine.fill.JREvaluator.evaluate(JREvaluator.java:183) at net.sf.jasperreports.engine.fill.JRCalculator.evaluate(JRCalculator.java:539) at net.sf.jasperreports.engine.fill.JRCalculator.evaluate(JRCalculator.java:507) at net.sf.jasperreports.engine.fill.JRFillElement.evaluateExpression(JRFillElement.java:807) at net.sf.jasperreports.engine.fill.JRFillImage.evaluateImage(JRFillImage.java:447) at net.sf.jasperreports.engine.fill.JRFillImage.evaluate(JRFillImage.java:430) at net.sf.jasperreports.engine.fill.JRFillElementContainer.evaluate(JRFillElementContainer.java:277) at net.sf.jasperreports.engine.fill.JRFillBand.evaluate(JRFillBand.java:399) at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillColumnBand(JRVerticalFiller.java:1289) at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillDetail(JRVerticalFiller.java:631) at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillReportStart(JRVerticalFiller.java:228) at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillReport(JRVerticalFiller.java:128) at net.sf.jasperreports.engine.fill.JRBaseFiller.fill(JRBaseFiller.java:758) at net.sf.jasperreports.engine.fill.JRBaseFiller.fill(JRBaseFiller.java:685) at net.sf.jasperreports.engine.fill.JRFiller.fillReport(JRFiller.java:89) at net.sf.jasperreports.engine.JasperFillManager.fillReport(JasperFillManager.java:601) at jaspertest1.JasperReportsIntro.main(JasperReportsIntro.java:46) Caused by: java.lang.ClassCastException at Simple_Report_1158667614968_767996.evaluate(Simple_Report_1158667614968_767996.java:167) at net.sf.jasperreports.engine.fill.JREvaluator.evaluate(JREvaluator.java:172) ... 16 more

Post edited by: mbjorkman, at: 2006/09/19 12:50

[Mange]

I found the problem and as usual it was a simple error. After going back and forth between Fields and Parameters I found that I have declared the Field as a string...

:blush: