using tables, always no data

[hybris0]

Hi i am trying to do a simple report using the Table element.

I think i carefully followed the example code provided with the code distribution of version 3.7.4

Anyway when i render my report i always get No data.

I tried to debug and it seems that the DataSource is never called.

Attached you can find the report XML.

This is the code used to fill the report:

List<TheData> tdl = getTheData();Vector<HashMap> dati = new Vector<HashMap>();for(TheData td : tdl) {                HashMap<String, Object> hm = new HashMap<String, Object>();                hm.put("phase", td.getPhase()));                hm.put("product", td.getProoduct());                                dati.add(hm);}JRMapCollectionDataSource ds = new JRMapCollectionDataSource(dati);Map<String, Object> params = new HashMap<String, Object>();params.put("TableDataSource", ds);JasperReport jr = (JasperReport) JRLoader.loadObject(getClass().getResource("/myjasper/sintesi_periodo.jasper"));JasperPrint jp = JasperFillManager.fillReport(jr, params);

This is the debug output from jasper:

2010-09-20 12.07.18: DEBUG net.sf.jasperreports.extensions.ExtensionsEnvironment (ExtensionsEnvironment.java:77) - Instantiating extensions registry class net.sf.jasperreports.extensions.DefaultExtensionsRegistry2010-09-20 12.07.18: DEBUG net.sf.jasperreports.extensions.DefaultExtensionsRegistry (DefaultExtensionsRegistry.java:129) - Loading registries for cache key sun.misc.Launcher$AppClassLoader@f4a24a2010-09-20 12.07.18: DEBUG net.sf.jasperreports.engine.util.JRLoader (JRLoader.java:692) - Found resource jasperreports_extension.properties at jar:file:/home/marcopar/progetti/PTrack3Commons/dist/lib/jasperreports-3.7.4.jar!/jasperreports_extension.properties in classloader sun.misc.Launcher$AppClassLoader@f4a24a2010-09-20 12.07.18: DEBUG net.sf.jasperreports.extensions.DefaultExtensionsRegistry (DefaultExtensionsRegistry.java:157) - Loading JasperReports extension properties resource jar:file:/home/marcopar/progetti/PTrack3Commons/dist/lib/jasperreports-3.7.4.jar!/jasperreports_extension.properties2010-09-20 12.07.18: DEBUG net.sf.jasperreports.extensions.DefaultExtensionsRegistry (DefaultExtensionsRegistry.java:207) - Instantiating registry of type net.sf.jasperreports.extensions.DefaultExtensionsRegistryFactory for property net.sf.jasperreports.extension.registry.factory.default2010-09-20 12.07.18: DEBUG net.sf.jasperreports.extensions.DefaultExtensionsRegistry (DefaultExtensionsRegistry.java:232) - Instantiating extensions registry for default using factory class net.sf.jasperreports.extensions.DefaultExtensionsRegistryFactory2010-09-20 12.07.18: DEBUG net.sf.jasperreports.extensions.DefaultExtensionsRegistry (DefaultExtensionsRegistry.java:207) - Instantiating registry of type net.sf.jasperreports.governors.GovernorExtensionsRegistryFactory for property net.sf.jasperreports.extension.registry.factory.governor2010-09-20 12.07.18: DEBUG net.sf.jasperreports.extensions.DefaultExtensionsRegistry (DefaultExtensionsRegistry.java:232) - Instantiating extensions registry for governor using factory class net.sf.jasperreports.governors.GovernorExtensionsRegistryFactory2010-09-20 12.07.18: DEBUG net.sf.jasperreports.extensions.DefaultExtensionsRegistry (DefaultExtensionsRegistry.java:207) - Instantiating registry of type net.sf.jasperreports.components.ComponentsExtensionsRegistryFactory for property net.sf.jasperreports.extension.registry.factory.components2010-09-20 12.07.18: DEBUG net.sf.jasperreports.extensions.DefaultExtensionsRegistry (DefaultExtensionsRegistry.java:232) - Instantiating extensions registry for components using factory class net.sf.jasperreports.components.ComponentsExtensionsRegistryFactory2010-09-20 12.07.19: DEBUG net.sf.jasperreports.engine.fill.JRBaseFiller (JRBaseFiller.java:378) - Fill 29087107: created for sintesi_periodo2010-09-20 12.07.19: DEBUG net.sf.jasperreports.engine.fill.JRBaseFiller (JRBaseFiller.java:879) - Fill 29087107: filling report2010-09-20 12.07.19: DEBUG net.sf.jasperreports.engine.fill.JRVerticalFiller (JRVerticalFiller.java:140) - Fill 29087107: no data2010-09-20 12.07.19: DEBUG net.sf.jasperreports.engine.fill.JRVerticalFiller (JRVerticalFiller.java:216) - Fill 29087107: no pages2010-09-20 12.07.19: DEBUG net.sf.jasperreports.engine.fill.JRBaseFiller (JRBaseFiller.java:952) - Fill 29087107: ended

[hybris0]

Hi all again,

I banged my head again and again on this this, checked the example row by row to see if something different is done but i cannot find where is the error.

Can someone please send me a working report and relative java code used to populate it?

Maybe you have something simple enough to be shared.

Thanks

[hybris0]

ok it seems i have 2 problems here:

1) i am using variables instead of fields (i took inspiration from the demo example)

2) if i set my own datasource parameter i get no data, if use REPORT_DATA_SOURCE parameter i get the data correctly rendered

This last point i think it's in contrast with the table target usage because it means i cannot have more than one table in the report.

Also i think the demo example is highly misleading on how to use tables.

[hybris0]

finally i got it

the table must not be in the detail band as that band is rendered only when REPORT_DATA_SOURCE is filled

probably i should have read a bit more docs but the demo example is very very poor