[IgnatzMouse]

When trying to “Scaffold Spring CRUD Application” for GWT I get the following errors and exceptions:

java.lang.NullPointerException
    at com.skyway.integration.google.webtoolkit.generation.GetRequestFactoryPackage.doAction(GetRequestFactoryPackage.java:38)
    at org.eclipse.jet.internal.runtime.SafeEmptyRuntimeTag$1.doRun(SafeEmptyRuntimeTag.java:49)
    at org.eclipse.jet.internal.runtime.SafeCustomRuntimeTag$TagSafeRunnable.run(SafeCustomRuntimeTag.java:78)
    at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
    at org.eclipse.core.runtime.Platform.run(Platform.java:888)
    at org.eclipse.jet.internal.runtime.SafeEmptyRuntimeTag.doStart(SafeEmptyRuntimeTag.java:43)
    at com.skyway.integration.google.webtoolkit.deploy.templates.ObjectProxyTemplate.generate(ObjectProxyTemplate.java:392)
    at org.eclipse.jet.JET2TemplateManager$TemplateRunnerImpl.generate(JET2TemplateManager.java:78)
    at org.skyway.core.generation.jet.JETArtifactGenerator$1.run(JETArtifactGenerator.java:172)
    at org.eclipse.jet.JET2TemplateManager.run(JET2TemplateManager.java:146)
    at org.skyway.core.generation.jet.JETArtifactGenerator.generate(JETArtifactGenerator.java:159)
    at org.skyway.core.generation.jet.JETArtifactGenerator.generate(JETArtifactGenerator.java:119)
    at org.skyway.core.generation.ArtifactBuilder.generateArtifact(ArtifactBuilder.java:510)
    at org.skyway.core.generation.ArtifactBuilder.buildAllArtifactsForModel(ArtifactBuilder.java:457)
    at org.skyway.core.generation.ArtifactBuilder.build(ArtifactBuilder.java:371)
    at org.skyway.core.generation.generator.Generator.generate(Generator.java:268)
    at org.skyway.core.generate.generator.invoke.InvokeDslBuilderGenerator.generate(InvokeDslBuilderGenerator.java:44)
    at org.skyway.core.generate.generator.DescendantGenerator.generateChild(DescendantGenerator.java:28)
    at org.skyway.core.generate.generator.DescendantGenerator.generateChildren(DescendantGenerator.java:21)
    at org.skyway.core.generate.generator.DescendantGenerator.generate(DescendantGenerator.java:14)
    at org.skyway.core.generate.generator.control.ResourceGenerator.generate(ResourceGenerator.java:19)
    at org.skyway.core.generate.execute.GenerationJob.generate(GenerationJob.java:115)
    at org.skyway.core.generate.execute.GenerationJob$1.run(GenerationJob.java:59)
    at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2344)
    at org.skyway.core.generate.execute.GenerationJob.run(GenerationJob.java:55)
    at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)

Here is what I’m doing:
1. create a web project
2. add GWT 2.5 jars to build path
3. import WSDL
4. Scaffold Spring CRUD Application from an Oracle DB, selecting GWT 2.1

This happens on Debian 2.6.32-5-amd64 with MyEclipse Blue Edition 10.6 Blue, Build id 10.6-Blue-20120727

[IgnatzMouse]

fixed it by installing the GWT plugin.
Strange tho, that I can set the scaffolding for GWT if it isn’t installed…

[support-swapna]

IgnatzMouse,

Glad that you got it working. The GWT plugin has to be installed for it Scaffold to work.

Let us know if you see any other issues.

[IgnatzMouse]

I now have the next problem. I got my setup right and started with a web project and GWT scaffolding from a database. Everything is fine until it comes to running the web app.
The MyEclipse Tomcat spews out tons of exceptions as soon as I press the “View GWT Scaffolding” button:

08.03.2013 16:13:59 com.google.web.bindery.requestfactory.server.RequestFactoryServlet doPost
SCHWERWIEGEND: Unexpected error
java.lang.RuntimeException: The RequestFactory ValidationTool must be run for the gwt.client.managed.request.ApplicationRequestFactory RequestFactory type
    at com.google.web.bindery.requestfactory.vm.impl.Deobfuscator$Builder.load(Deobfuscator.java:57)
    at com.google.web.bindery.requestfactory.server.ResolverServiceLayer.updateDeobfuscator(ResolverServiceLayer.java:43)
    at com.google.web.bindery.requestfactory.server.ResolverServiceLayer.resolveRequestFactory(ResolverServiceLayer.java:176)
    at com.google.web.bindery.requestfactory.server.ServiceLayerDecorator.resolveRequestFactory(ServiceLayerDecorator.java:172)
    at com.google.web.bindery.requestfactory.server.ServiceLayerDecorator.resolveRequestFactory(ServiceLayerDecorator.java:172)
    at com.google.web.bindery.requestfactory.server.ServiceLayerDecorator.resolveRequestFactory(ServiceLayerDecorator.java:172)
    at sun.reflect.GeneratedMethodAccessor30.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at com.google.web.bindery.requestfactory.server.ServiceLayerCache.getOrCache(ServiceLayerCache.java:233)
    at com.google.web.bindery.requestfactory.server.ServiceLayerCache.resolveRequestFactory(ServiceLayerCache.java:198)
    at com.google.web.bindery.requestfactory.server.SimpleRequestProcessor.process(SimpleRequestProcessor.java:215)
    at com.google.web.bindery.requestfactory.server.SimpleRequestProcessor.process(SimpleRequestProcessor.java:135)
    at com.google.web.bindery.requestfactory.server.RequestFactoryServlet.doPost(RequestFactoryServlet.java:133)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at com.opensymphony.sitemesh.webapp.SiteMeshFilter.obtainContent(SiteMeshFilter.java:129)
    at com.opensymphony.sitemesh.webapp.SiteMeshFilter.doFilter(SiteMeshFilter.java:77)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter.doFilterInternal(OpenEntityManagerInViewFilter.java:113)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:261)
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:581)
    at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
    at java.lang.Thread.run(Thread.java:619)

any idea what is missing?

[support-swapna]

IgnatzMouse,

Take a look at this post which discusses the Scaffolding for GWT 2.4 in detail. Please follow the instructions as discussed :
https://www.genuitec.com/forums/topic/gwt-scaffolding-for-gwt-2-4-sdk-users/

Let us know how it works for you.

[Author]

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