Question: Chart theme not found during FillReport

[jbuberel]

I've developed a very simple custom chart theme named 'altostheme' (filename: altostheme.jrctx).

Inside my report JRXML, the them is referenced as:

<chart renderType="svg" theme="altostheme">

The them was developed using iReports-ng v.3.5.2, and then 'exported' into a JAR file (altostheme.jar), which was placed into the iReports-ng root installation directly. When executed from within iReports-nb v3.5.2, everything works correctly.

I am now trying to fill the report programatically, and I am getting this stack trace:

     [java] 2009-07-19 23:22:15 INFO  main - Starting generation for spec [50d35da8204a899901204a89a2470001]      [java] 2009-07-19 23:22:40 ERROR main - Generic expection thrown during report fill for JASPER file: /home/jason/svn/branches/mywebpage/reports/one_page_themed/one_page_primary_mf.jasper of 50d35da8204a899901204a89a2470001 of customer 52417680     [java] net.sf.jasperreports.engine.JRRuntimeException: Chart theme 'altostheme' not found.     [java]     at net.sf.jasperreports.charts.util.ChartUtil.getChartTheme(ChartUtil.java:169) [jasperreports-javaflow.jar:na]     [java]     at net.sf.jasperreports.engine.fill.JRFillChart.evaluateChart(JRFillChart.java:1277) [jasperreports-javaflow.jar:na]     [java]     at net.sf.jasperreports.engine.fill.JRFillChart.evaluateRenderer(JRFillChart.java:1252) [jasperreports-javaflow.jar:na]     [java]     at net.sf.jasperreports.engine.fill.JRFillChart.evaluate(JRFillChart.java:1241) [jasperreports-javaflow.jar:na]     [java]     at net.sf.jasperreports.engine.fill.JRFillElementContainer.evaluate(JRFillElementContainer.java:260) [jasperreports-javaflow.jar:na]     [java]     at net.sf.jasperreports.engine.fill.JRFillBand.evaluate(JRFillBand.java:486) [jasperreports-javaflow.jar:na]     [java]     at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillColumnBand(JRVerticalFiller.java:1427) [jasperreports-javaflow.jar:na]     [java]     at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillDetail(JRVerticalFiller.java:729) [jasperreports-javaflow.jar:na]     [java]     at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillReportStart(JRVerticalFiller.java:256) [jasperreports-javaflow.jar:na]     [java]     at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillReport(JRVerticalFiller.java:114) [jasperreports-javaflow.jar:na]     [java]     at net.sf.jasperreports.engine.fill.JRBaseFiller.fill(JRBaseFiller.java:911) [jasperreports-javaflow.jar:na]     [java]     at net.sf.jasperreports.engine.fill.JRBaseFiller.fill(JRBaseFiller.java:814) [jasperreports-javaflow.jar:na]     [java]     at net.sf.jasperreports.engine.fill.JRFiller.fillReport(JRFiller.java:63) [jasperreports-javaflow.jar:na]     [java]     at net.sf.jasperreports.engine.JasperFillManager.fillReport(JasperFillManager.java:421) [jasperreports-javaflow.jar:3.5.2]     [java]     at net.sf.jasperreports.engine.JasperFillManager.fillReport(JasperFillManager.java:251) [jasperreports-javaflow.jar:3.5.2]     [java]     at com.altosresearch.report.ReportGenerationMgr.fillReport(ReportGenerationMgr.java:411) [classes/:na]

I have attempted to add to the JRPropertyMap:

JRProperties.setProperty("net.sf.jasperreports.xml.chart.theme.altostheme", "/full/path/to/altostheme.jrctx");

But although the JRXML file compiles correctly, it fails to find the theme during fill-time.

So my questions is:

What steps should I be taking to inform the report filler of the proper location of either the 'altostheme.jrctx' or the packaged 'altostheme.jar' file at runtime?

Thanks,

Jason
 

 

[jbuberel]

The approach shown above is based on my reading through the source code found in XmlChartThemeExtensionsRegistryFactory. Is there some better example of how to 'register' a new chart theme at runtime?

[jbuberel]

I'm now starting to understand this. Chart theme support is NOT part of the jasperreports.jar feature set as of v3.5.2. In the iReports distribution, I see that the charttheme sample code is actually encapsulated into the extension module 'jasperreports-chart-themes-3.5.2.jar' jarfile.

 

So the approach I will now pursue is the integration of the charttheme sample/demo app into my standard jasperreports-3.5.2 infrastructure. I then only need to figure out the 'proper' way to then register my theme (at run time) properly.

 

I'll writeup another HOWTO when I get it working, but any suggestions or hints are welcome.

[jbuberel]

Answered, with a complete tutorial:

 

http://blog.altosresearch.com/howto-integrate-jasperreports-chart-themes/