gwtext.jar fails to load from maven classpath variable

[alexzakharov]

I noticed an odd problem with GWT-EXT integration.

Lets say I have a module configured for GWT-EXT and lets say gwtext.jar is added to the build path of my eclipse project from a local directory (e.g. c:\alex\gwtext.jar). Then when switching to designer view for my module everything works as expected.

Now, if instead gwtext.jar is added to the build path via a variable (e.g MAVEN-REPO/gwt/gwtext.jar) then when switching to designer mode I blow up because designer can't find the jar.

In other words if .classpath file for my eclipse project looks like below then designer mode is fine.

<?xml version="1.0" encoding="UTF-8"?>
<classpath>
...
<classpathentry kind="lib" path="C:/software/repository/gwt/jars/gwtext-2.0.6.jar"/>
...
</classpath>

BUT if .classpath file for my eclipse project looks like this (see below), then designer blows up:


<?xml version="1.0" encoding="UTF-8"?>
<classpath>
...
<classpathentry kind="var" path="MAVEN_REPO/gwt/jars/gwtext-2.0.6.jar"/>
...
</classpath>

MAVEN_REPO is defined in classpath variables as \software\repository
(C:\software\repository is a local drive)

Also, notice the projects runs fine, it is just the designer mode.

[alexzakharov]

i temporarily fixed the problem by setting my MAVEN-REPO to be C:/software/repository instead of /software/repository.

But it would be nice if designer interpreted '/software/repository' as a local windows directory as opposed to a network drive... the rest of eclipse does.

[Eric Clayberg]

GWT Designer doesn't care which way you have it specified in your .classpath file. It seemed to work either way on our end.

Are you cable to launch in hosted mode both ways? Are there any compilation errors showing?

What do you mean by "blow up because designer can't find the jar"? What is the exact exception?

[alexzakharov]

everything compiles and runs fine, only the designer mode doesn't render for the module.

my theory is that designer doesn't correctly interpret platform-independent variables. for example if in Window->Preferences->Java->Build Path->Classpath Variables I specify MAVEN_REPO as C:\software\repository and then my GWT project's build-path references a jar like this MAVEN_REPO/gwtext.jar then compilation, hosted mode, designer all work fine.

However if now I go ahead and redefine MAVEN_REPO as /software/repository then compilation, hosted mode work but designer throws an error when I switch to 'Design' view of my GWT-EXT-enabled module.

The actual error is below. I suspect that when designer sees /software/repository it thinks it is not a local directory but a shared drive.


Loading inherited module 'com.google.gwt.user.theme.standard.Standard'
Loading inherited module 'com.gwtext.GwtExt'
[ERROR] Unable to open resource: jar:file:/\software\repository\gwt\jars\gwtext-2.0.6.jar!/com/gwtext/GwtExt.gwt.xml
java.io.FileNotFoundException: \\software\repository\gwt\jars\gwtext-2.0.6.jar (The network path was not found)
at java.util.zip.ZipFile.open(Native Method)
at java.util.zip.ZipFile.<init>(Unknown Source)
at java.util.jar.JarFile.<init>(Unknown Source)
at java.util.jar.JarFile.<init>(Unknown Source)
at sun.net.www.protocol.jar.URLJarFile.<init>(Unknown Source)
at sun.net.www.protocol.jar.URLJarFile.getJarFile(Unknown Source)
at sun.net.www.protocol.jar.JarFileFactory.get(Unknown Source)
at sun.net.www.protocol.jar.JarURLConnection.connect(Unknown Source)
at sun.net.www.protocol.jar.JarURLConnection.getInputStream(Unknown Source)
at java.net.URL.openStream(Unknown Source)
at com.google.gwt.dev.util.Util.createReader(Util.java:218)
at com.google.gwt.dev.cfg.ModuleDefLoader.nestedLoad(ModuleDefLoader.java:262)
at com.google.gwt.dev.cfg.ModuleDefSchema$BodySchema.__inherits_begin(ModuleDefSchema.java:212)
at sun.reflect.GeneratedMethodAccessor7.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.google.gwt.dev.util.xml.HandlerMethod.invokeBegin(HandlerMethod.java:223)
at com.google.gwt.dev.util.xml.ReflectiveParser$Impl.startElement(ReflectiveParser.java:257)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.startElement(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.AbstractXMLDocumentParser.emptyElement(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanStartElement(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)
at com.google.gwt.dev.util.xml.ReflectiveParser$Impl.parse(ReflectiveParser.java:314)
at com.google.gwt.dev.util.xml.ReflectiveParser$Impl.access$100(ReflectiveParser.java:48)
at com.google.gwt.dev.util.xml.ReflectiveParser.parse(ReflectiveParser.java:385)
at com.google.gwt.dev.cfg.ModuleDefLoader.nestedLoad(ModuleDefLoader.java:265)
at com.google.gwt.dev.cfg.ModuleDefLoader$1.load(ModuleDefLoader.java:163)
at com.google.gwt.dev.cfg.ModuleDefLoader.doLoadModule(ModuleDefLoader.java:291)
at com.google.gwt.dev.cfg.ModuleDefLoader.loadFromClassPath(ModuleDefLoader.java:132)
at com.instantiations.designer.gwt.hosted.ods.HostedModeSupport.loadModule(HostedModeSupport.java:220)
at com.instantiations.designer.gwt.hosted.ods.HostedModeSupport.createModuleSpaceHost(HostedModeSupport.java:233)
at com.instantiations.designer.gwt.hosted.ie.BrowserShellIE6$External.gwtOnLoad(BrowserShellIE6.java:277)
at com.instantiations.designer.gwt.hosted.ie.BrowserShellIE6$External.invoke(BrowserShellIE6.java:329)
at com.google.gwt.dev.shell.ie.IDispatchImpl.Invoke(IDispatchImpl.java:295)
at com.google.gwt.dev.shell.ie.IDispatchImpl.method6(IDispatchImpl.java:195)
at org.eclipse.swt.internal.ole.win32.COMObject.callback6(COMObject.java:119)
at org.eclipse.swt.internal.win32.OS.DispatchMessageW(Native Method)
at org.eclipse.swt.internal.win32.OS.DispatchMessage(OS.java:2371)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3420)
at com.instantiations.designer.gwt.hosted.ods.HostedModeSupport.runMessagesLoop(HostedModeSupport.java:198)
at com.instantiations.designer.gwt.hosted.ods.HostedModeSupport$1.run(HostedModeSupport.java:129)
at com.instantiations.designer.gwt.hosted.ie.BrowserShellIE6.setUrl(BrowserShellIE6.java:111)
at com.instantiations.designer.gwt.hosted.ods.HostedModeSupport.startup(HostedModeSupport.java:127)
at com.instantiations.designer.gwt.model.widgets.support.GWTState.initialize(GWTState.java:159)
at com.instantiations.designer.gwt.model.widgets.support.GWTState.<init>(GWTState.java:143)
at com.instantiations.designer.gwt.parser.ParseFactory.createClassLoader(ParseFactory.java:312)
at com.instantiations.designer.gwt.parser.ParseFactory.initializeClassLoader(ParseFactory.java:288)
at com.instantiations.designer.gwt.parser.ParseFactory.getRootContext(ParseFactory.java:90)
at com.instantiations.designer.core.parser.JavaInfoParser.prepareParseContext(JavaInfoParser.java:836)
at com.instantiations.designer.core.parser.JavaInfoParser.parse(JavaInfoParser.java:210)
at com.instantiations.designer.core.parser.JavaInfoParser.access$000(JavaInfoParser.java:110)
at com.instantiations.designer.core.parser.JavaInfoParser$1.runObject(JavaInfoParser.java:132)
at com.instantiations.designer.core.parser.JavaInfoParser$1.runObject(JavaInfoParser.java:131)
at com.instantiations.designer.core.utils.execution.ExecutionUtils.runDesignTime(ExecutionUtils.java:99)
at com.instantiations.designer.core.parser.JavaInfoParser.parse(JavaInfoParser.java:130)
at com.instantiations.designer.core.editor.DesignPage.internal_refreshGEF_withProgress(DesignPage.java:408)
at com.instantiations.designer.core.editor.DesignPage.access$800(DesignPage.java:57)
at com.instantiations.designer.core.editor.DesignPage$7$1.run(DesignPage.java:316)
at org.eclipse.swt.widgets.Synchronizer.syncExec(Synchronizer.java:178)
at org.eclipse.ui.internal.UISynchronizer.syncExec(UISynchronizer.java:150)
at org.eclipse.swt.widgets.Display.syncExec(Display.java:4251)
at com.instantiations.designer.core.editor.DesignPage$7.run(DesignPage.java:313)
at org.eclipse.jface.operation.ModalContext.runInCurrentThread(ModalContext.java:464)
at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:372)
at org.eclipse.jface.dialogs.ProgressMonitorDialog.run(ProgressMonitorDialog.java:507)
at com.instantiations.designer.core.editor.DesignPage.internal_refreshGEF(DesignPage.java:334)
at com.instantiations.designer.core.editor.UndoManager.refreshDesignerEditor(UndoManager.java:444)
at com.instantiations.designer.core.editor.UndoManager.activate(UndoManager.java:77)
at com.instantiations.designer.core.editor.DesignPage.handleActiveState_True(DesignPage.java:216)
at com.instantiations.designer.core.editor.DesignPage.handleActiveState(DesignPage.java:203)
at com.instantiations.designer.core.editor.multi.DefaultMultiMode.showPage(DefaultMultiMode.java:80)
at com.instantiations.designer.core.editor.multi.DefaultMultiMode$1.widgetSelected(DefaultMultiMode.java:43)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:228)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1003)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1027)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1012)
at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:770)
at org.eclipse.swt.custom.CTabFolder.setSelection(CTabFolder.java:3242)
at org.eclipse.swt.custom.CTabFolder.onMouse(CTabFolder.java:2017)
at org.eclipse.swt.custom.CTabFolder$1.handleEvent(CTabFolder.java:320)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1003)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3823)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3422)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2384)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2348)
at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2200)
at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:495)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:288)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:490)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:113)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:193)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:386)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:549)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:504)
at org.eclipse.equinox.launcher.Main.run(Main.java:1236)
[ERROR] Line 11: Unexpected exception while processing element 'inherits'
com.google.gwt.core.ext.UnableToCompleteException: (see "project_dir/.gwt-logs/.gwt-log" for details.)
at com.google.gwt.dev.util.Util.createReader(Util.java:221)
at com.google.gwt.dev.cfg.ModuleDefLoader.nestedLoad(ModuleDefLoader.java:262)
at com.google.gwt.dev.cfg.ModuleDefSchema$BodySchema.__inherits_begin(ModuleDefSchema.java:212)

[alexzakharov]

OK, I was able to replicate with a brand-new simple project:

- create new gwt project (with default ImageViewer). lets say the project is in c:\workspace\test
- right-click configure for GWT-EXT
- exit eclipse, rename gwtext.jar into gwtext-2.0.6.jar
- start eclipse ('desig' view will fail of course as well as compilation)
- go to project's build path and point it to gwtext-2.0.6 instead of gwtext. everything works.
- now go to Java->Preferences (Under main Eclipse preferences) and define a classpath variable BOO
- set BOO = c:\workspace\test
- goto build path of the the image viewer project and specify a reference to gwtext-2.0.6 like this: BOO/gwtext-2.0.6 (via 'Add Variable'). everything will still work fine
- go back to global java preferences and set BOO=\workspace\test
- NOW, close ImageViewer file, open ImageViewer file and goto 'Design' view.

You get his error in design view:

WindowBuilder internal error

WindowBuilder encountered unexpected internal error. Please contact support.

com.google.gwt.core.ext.UnableToCompleteException: (see "project_dir/.gwt-logs/.gwt-log" for details.)

And the log contains this:

Loading inherited module 'com.google.gwt.user.theme.standard.Standard'
Loading inherited module 'com.gwtext.GwtExt'
[ERROR] Unable to open resource: jar:file:/\workspace\GWTEXTFail\gwtext-2.0.6.jar!/com/gwtext/GwtExt.gwt.xml
java.io.FileNotFoundException: \\workspace\GWTEXTFail\gwtext-2.0.6.jar (The network path was not found)
at java.util.zip.ZipFile.open(Native Method)
at java.util.zip.ZipFile.<init>(Unknown Source)
at java.util.jar.JarFile.<init>(Unknown Source)
at java.util.jar.JarFile.<init>(Unknown Source)
at sun.net.www.protocol.jar.URLJarFile.<init>(Unknown Source)
at sun.net.www.protocol.jar.URLJarFile.getJarFile(Unknown Source)
at sun.net.www.protocol.jar.JarFileFactory.get(Unknown Source)
at sun.net.www.protocol.jar.JarURLConnection.connect(Unknown Source)
at sun.net.www.protocol.jar.JarURLConnection.getInputStream(Unknown Source)
at java.net.URL.openStream(Unknown Source)
at com.google.gwt.dev.util.Util.createReader(Util.java:218)
at com.google.gwt.dev.cfg.ModuleDefLoader.nestedLoad(ModuleDefLoader.java:262)
at com.google.gwt.dev.cfg.ModuleDefSchema$BodySchema.__inherits_begin(ModuleDefSchema.java:212)
at sun.reflect.GeneratedMethodAccessor6.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.google.gwt.dev.util.xml.HandlerMethod.invokeBegin(HandlerMethod.java:223)
at com.google.gwt.dev.util.xml.ReflectiveParser$Impl.startElement(ReflectiveParser.java:257)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.startElement(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.AbstractXMLDocumentParser.emptyElement(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanStartElement(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)
at com.google.gwt.dev.util.xml.ReflectiveParser$Impl.parse(ReflectiveParser.java:314)
at com.google.gwt.dev.util.xml.ReflectiveParser$Impl.access$100(ReflectiveParser.java:48)
at com.google.gwt.dev.util.xml.ReflectiveParser.parse(ReflectiveParser.java:385)
at com.google.gwt.dev.cfg.ModuleDefLoader.nestedLoad(ModuleDefLoader.java:265)
at com.google.gwt.dev.cfg.ModuleDefLoader$1.load(ModuleDefLoader.java:163)
at com.google.gwt.dev.cfg.ModuleDefLoader.doLoadModule(ModuleDefLoader.java:291)

[Eric Clayberg]

Give this a try using the latest GWT Designer v7.1 build.

[alexzakharov]

Excellent - it works. Thanks!

[Eric Clayberg]

Good news.