subbareddy Posted November 13, 2006 Share Posted November 13, 2006 Hi all, I am new to reports.while working with charts i am getting this exception. i am using java code for source. Plz send me how to work with charts and related information.. Thanks and regards Subba Reddy Null 'key' argument.java.lang.IllegalArgumentException: Null 'key' argument. at org.jfree.data.DefaultKeyedValues.setValue(DefaultKeyedValues.java:225) at org.jfree.data.general.DefaultPieDataset.setValue(DefaultPieDataset.java:187) at net.sf.jasperreports.charts.fill.JRFillPieDataset.customIncrement(JRFillPieDataset.java:158) at net.sf.jasperreports.engine.fill.JRFillElementDataset.increment(JRFillElementDataset.java:169) at net.sf.jasperreports.engine.fill.JRCalculator.calculateVariables(JRCalculator.java:154) at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillDetail(JRVerticalFiller.java:621) 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 net.sf.jasperreports.engine.JasperFillManager.fillReport(JasperFillManager.java:517) at it.businesslogic.ireport.IReportCompiler.run(IReportCompiler.java:723) at java.lang.Thread.run(Thread.java:595) Print not filled. Try to use an EmptyDataSource...! [file name=Sample-cfcb60dc6fe9266f817aa93e8e27373e.jrxml size=3694]http://www.jasperforge.org/components/com_joomlaboard/uploaded/files/Sample-cfcb60dc6fe9266f817aa93e8e27373e.jrxml[/file] Link to comment Share on other sites More sharing options...
Teodor Danciu Posted November 16, 2006 Share Posted November 16, 2006 Hi, The exception message tells you exactly what is wrong.You cannot add null values to the chart dataset and apparently one of the keys you try to put there in the pie chart is null. You should filter them out, probably by using the <filterExpression> of the dataset. No wonder the keys are null if you use the empty data source implementation where all fields are null. I hope this helps.Teodor Link to comment Share on other sites More sharing options...
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