| 
| trying to call java class, but screwed [message #162723] | Thu, 18 May 2006 19:53 |  | 
| Eclipse User  |  |  |  |  | Originally posted by: wohlgemuth.ucdavis.edu 
 basicly I have a datasource and want to calculate something fomr the given
 result.
 
 so I tried with a simple wrapper object and getting always this exception.
 
 I know there is nothing null and i put the classes under:
 C:\development\eclipse\plugins\org.eclipse.birt.report.viewe r_2.1.0.N20060415-1243\birt\WEB-INF\lib
 
 so what do I do wrong?
 
 org.eclipse.birt.data.engine.core.DataException: The data type of computed
 column "ttt" is org.eclipse.birt.core.data.DataType$AnyType, but one of
 its value is "null", which cannot be converted to
 org.eclipse.birt.core.data.DataType$AnyType.
 at
 org.eclipse.birt.data.engine.impl.ComputedColumnHelperInstan ce.process(ComputedColumnHelper.java:269)
 at
 org.eclipse.birt.data.engine.impl.ComputedColumnHelper.proce ss(ComputedColumnHelper.java:89)
 at
 org.eclipse.birt.data.engine.executor.cache.RowResultSet.pro cessFetchEvent(RowResultSet.java:121)
 at
 org.eclipse.birt.data.engine.executor.cache.RowResultSet.nex t(RowResultSet.java:89)
 at
 org.eclipse.birt.data.engine.executor.cache.ExpandableRowRes ultSet.next(ExpandableRowResultSet.java:66)
 at
 org.eclipse.birt.data.engine.executor.cache.SmartCache.popul ateData(SmartCache.java:304)
 at
 org.eclipse.birt.data.engine.executor.cache.SmartCache.initI nstance(SmartCache.java:231)
 at
 org.eclipse.birt.data.engine.executor.cache.SmartCache.<init >(SmartCache.java:79)
 at
 org.eclipse.birt.data.engine.executor.transform.SinglePassRo wProcessor.initOdiResultSet(SinglePassRowProcessor.java:95)
 at
 org.eclipse.birt.data.engine.executor.transform.SinglePassRo wProcessor.pass(SinglePassRowProcessor.java:60)
 at
 org.eclipse.birt.data.engine.executor.transform.MultiPassRow Processor.pass(MultiPassRowProcessor.java:94)
 at
 org.eclipse.birt.data.engine.executor.transform.ResultSetPop ulator.populateResultSet(ResultSetPopulator.java:205)
 at
 org.eclipse.birt.data.engine.executor.transform.CachedResult Set. <init>(CachedResultSet.java:68)
 at
 org.eclipse.birt.data.engine.executor.DataSourceQuery.execut e(DataSourceQuery.java:511)
 at
 org.eclipse.birt.data.engine.impl.PreparedOdaDSQuery$OdaDSQu eryExecutor.executeOdiQuery(PreparedOdaDSQuery.java:265)
 at
 org.eclipse.birt.data.engine.impl.QueryExecutor.execute(Quer yExecutor.java:545)
 at
 org.eclipse.birt.data.engine.impl.QueryService.executeQuery( QueryService.java:144)
 at
 org.eclipse.birt.data.engine.impl.QueryResults.getResultIter ator(QueryResults.java:151)
 at
 org.eclipse.birt.report.designer.data.ui.dataset.ResultSetPr eviewPage.updateResults(ResultSetPreviewPage.java:228)
 at
 org.eclipse.birt.report.designer.data.ui.dataset.ResultSetPr eviewPage$4.run(ResultSetPreviewPage.java:402)
 at  org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:3 5)
 at
 org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchr onizer.java:123)
 at  org.eclipse.swt.widgets.Display.runAsyncMessages(Display.jav a:3325)
 at  org.eclipse.swt.widgets.Display.readAndDispatch(Display.java :2971)
 at  org.eclipse.jface.window.Window.runEventLoop(Window.java:820 )
 at org.eclipse.jface.window.Window.open(Window.java:796)
 at
 org.eclipse.birt.report.designer.internal.ui.dialogs.BaseDia log.open(BaseDialog.java:145)
 at
 org.eclipse.birt.report.designer.internal.ui.views.data.prov iders.DataSetNodeProvider.performEdit(DataSetNodeProvider.ja va:198)
 at
 org.eclipse.birt.report.designer.internal.ui.views.DefaultNo deProvider.performRequest(DefaultNodeProvider.java:351)
 at
 org.eclipse.birt.report.designer.internal.ui.views.actions.E ditAction.doAction(EditAction.java:79)
 at
 org.eclipse.birt.report.designer.internal.ui.views.actions.A bstractElementAction.run(AbstractElementAction.java:64)
 at
 org.eclipse.birt.report.designer.internal.ui.views.RenameLis tener.doubleClick(RenameListener.java:211)
 at
 org.eclipse.jface.viewers.StructuredViewer$1.run(StructuredV iewer.java:790)
 at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37)
 at org.eclipse.core.runtime.Platform.run(Platform.java:843)
 at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:44)
 at  org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:14 9)
 at
 org.eclipse.jface.viewers.StructuredViewer.fireDoubleClick(S tructuredViewer.java:788)
 at
 org.eclipse.jface.viewers.AbstractTreeViewer.handleDoubleSel ect(AbstractTreeViewer.java:1210)
 at
 org.eclipse.jface.viewers.StructuredViewer$4.widgetDefaultSe lected(StructuredViewer.java:1152)
 at
 org.eclipse.jface.util.OpenStrategy.fireDefaultSelectionEven t(OpenStrategy.java:223)
 at  org.eclipse.jface.util.OpenStrategy.access$0(OpenStrategy.ja va:220)
 at
 org.eclipse.jface.util.OpenStrategy$1.handleEvent(OpenStrate gy.java:281)
 at  org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java :66)
 at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:925)
 at  org.eclipse.swt.widgets.Display.runDeferredEvents(Display.ja va:3348)
 at  org.eclipse.swt.widgets.Display.readAndDispatch(Display.java :2968)
 at  org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.jav a:1914)
 at  org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1878)
 at
 org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Work bench.java:419)
 at  org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.j ava:143)
 at  org.eclipse.ui.internal.ide.IDEApplication.run(IDEApplicatio n.java:95)
 at
 org.eclipse.core.internal.runtime.PlatformActivator$1.run(Pl atformActivator.java:78)
 at
 org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .runApplication(EclipseAppLauncher.java:92)
 at
 org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .start(EclipseAppLauncher.java:68)
 at
 org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:400)
 at
 org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:177)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
 at java.lang.reflect.Method.invoke(Unknown Source)
 at  org.eclipse.core.launcher.Main.invokeFramework(Main.java:336 )
 at org.eclipse.core.launcher.Main.basicRun(Main.java:280)
 at org.eclipse.core.launcher.Main.run(Main.java:977)
 at org.eclipse.core.launcher.Main.main(Main.java:952)
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