Symbol 'tapestry.scriptaculous' is defined in terms of itself

[nfranke]

I see tons of errors like this on the eclipse logs. I'm running 2.13.4. I think this may have something to do with some of the issues I'm having with Eclipse stability. These messages appear quite frequently generating megabytes of logs.

!ENTRY com.anjlab.eclipse.tapestry5 2 0 2017-08-04 17:18:55.524
!MESSAGE Error expanding asset '${tapestry.scriptaculous}/prototype.js'
!STACK 0
java.lang.RuntimeException: Symbol 'tapestry.scriptaculous' is defined in terms of itself (tapestry.scriptaculous --> tapestry.scriptaculous --> ... ~ 2000 more times ... --> tapestry.scriptaculous --> tapestry.scriptaculous).
	at com.anjlab.eclipse.tapestry5.internal.SymbolExpansion.expandSymbol(SymbolExpansion.java:110)
	at com.anjlab.eclipse.tapestry5.internal.SymbolExpansion.valueForSymbol(SymbolExpansion.java:97)
	at com.anjlab.eclipse.tapestry5.internal.SymbolExpansion.expandSymbols(SymbolExpansion.java:81)
	at com.anjlab.eclipse.tapestry5.TapestryProject.expandSymbols(TapestryProject.java:322)
	at com.anjlab.eclipse.tapestry5.TapestryUtils.expandSymbols(TapestryUtils.java:854)
	at com.anjlab.eclipse.tapestry5.Asset.<init>(Asset.java:12)
	at com.anjlab.eclipse.tapestry5.AssetReference.resolveFile(AssetReference.java:18)
	at com.anjlab.eclipse.tapestry5.AbstractFileReference.equals(AbstractFileReference.java:182)
	at com.anjlab.eclipse.tapestry5.views.TreeObject.equals(TreeObject.java:89)
	at org.eclipse.jface.viewers.StructuredViewer.equals(StructuredViewer.java:713)
	at org.eclipse.jface.viewers.AbstractTreeViewer.internalFindItem(AbstractTreeViewer.java:1816)
	at org.eclipse.jface.viewers.AbstractTreeViewer.doFindItem(AbstractTreeViewer.java:903)
	at org.eclipse.jface.viewers.StructuredViewer.findItems(StructuredViewer.java:811)
	at org.eclipse.jface.viewers.AbstractTreeViewer.internalGetWidgetToSelect(AbstractTreeViewer.java:1727)
	at org.eclipse.jface.viewers.AbstractTreeViewer.internalExpand(AbstractTreeViewer.java:1628)
	at org.eclipse.jface.viewers.AbstractTreeViewer.setSelectionToWidget(AbstractTreeViewer.java:2531)
	at org.eclipse.jface.viewers.AbstractTreeViewer.setSelectionToWidget(AbstractTreeViewer.java:3001)
	at org.eclipse.jface.viewers.StructuredViewer.preservingSelection(StructuredViewer.java:1469)
	at org.eclipse.jface.viewers.TreeViewer.preservingSelection(TreeViewer.java:366)
	at org.eclipse.jface.viewers.StructuredViewer.preservingSelection(StructuredViewer.java:1423)
	at org.eclipse.jface.viewers.AbstractTreeViewer.inputChanged(AbstractTreeViewer.java:1517)
	at org.eclipse.jface.viewers.ContentViewer.setInput(ContentViewer.java:292)
	at org.eclipse.jface.viewers.StructuredViewer.setInput(StructuredViewer.java:1701)
	at com.anjlab.eclipse.tapestry5.views.context.TapestryContextView.setContentProvider(TapestryContextView.java:147)
	at com.anjlab.eclipse.tapestry5.views.context.TapestryContextView.access$1(TapestryContextView.java:143)
	at com.anjlab.eclipse.tapestry5.views.context.TapestryContextView$1$1.run(TapestryContextView.java:93)
	at org.eclipse.ui.internal.UILockListener.doPendingWork(UILockListener.java:162)
	at org.eclipse.ui.internal.UISynchronizer$3.run(UISynchronizer.java:154)
	at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
	at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:135)
	at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4155)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3772)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$4.run(PartRenderingEngine.java:1127)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1018)
	at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:156)
	at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:694)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337)
	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:606)
	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
	at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:139)
	at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:380)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:235)
	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.equinox.launcher.Main.invokeFramework(Main.java:669)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:608)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1515)

[dmitrygusev]

Looks like recursion in symbol definition.

@nfranke how does the tapestry.scriptaculous symbol defined in your setup? Can you confirm you can run the app without errors?

Which Tapestry version is that? Does it happen on all pages/components or just some of them? Are you @Injecting any assets in failing components?

[nfranke]

I'm using Tapestry 5.3.7 and I have not defined tapestry.scriptaculous. That's part of the default config.

[nfranke]

I can't tell what's failing, exactly. I get hundreds of these in the logs.