[TAPESTRY-1361] BeanEditForm will throw NullPointerException if its object parameter is bound to null

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Duplicate
• Affects Version/s: 5.0
• Component/s: tapestry-core
• Assignee: Howard Lewis Ship
• Reporter: Howard Lewis Ship
• Created: 15/Mar/07 18:12
• Updated: 13/May/07 18:34
• Resolved: 13/May/07 18:34

Description

• java.lang.NullPointerException

Stack trace
o org.apache.tapestry.corelib.components.BeanEditForm.onPrepareFromForm(BeanEditForm.java:205)
o org.apache.tapestry.corelib.components.BeanEditForm.handleComponentEvent(BeanEditForm.java)
o org.apache.tapestry.internal.structure.ComponentPageElementImpl.handleEvent(ComponentPageElementImpl.java:895)
o org.apache.tapestry.internal.structure.ComponentPageElementImpl.triggerEvent(ComponentPageElementImpl.java:1002)
o org.apache.tapestry.internal.structure.InternalComponentResourcesImpl.triggerEvent(InternalComponentResourcesImpl.java:140)
o org.apache.tapestry.corelib.components.Form.onAction(Form.java:323)
o org.apache.tapestry.corelib.components.Form.handleComponentEvent(Form.java)
o org.apache.tapestry.internal.structure.ComponentPageElementImpl.handleEvent(ComponentPageElementImpl.java:903)
o org.apache.tapestry.internal.structure.ComponentPageElementImpl.triggerEvent(ComponentPageElementImpl.java:1002)
o org.apache.tapestry.internal.services.ActionLinkHandlerImpl.handle(ActionLinkHandlerImpl.java:100)
o org.apache.tapestry.internal.services.ActionLinkHandlerImpl.handle(ActionLinkHandlerImpl.java:53)
o org.apache.tapestry.internal.services.ComponentActionDispatcher.dispatch(ComponentActionDispatcher.java:115)
o org.apache.tapestry.services.TapestryModule$12.service(TapestryModule.java:1201)
o org.example.survey.services.AppModule$1.service(AppModule.java:52)
o org.apache.tapestry.internal.services.LocalizationFilter.service(LocalizationFilter.java:43)
o org.apache.tapestry.services.TapestryModule$3.service(TapestryModule.java:736)
o org.apache.tapestry.internal.services.StaticFilesFilter.service(StaticFilesFilter.java:63)
o org.apache.tapestry.internal.services.CheckForUpdatesFilter$2.invoke(CheckForUpdatesFilter.java:91)
o org.apache.tapestry.internal.services.CheckForUpdatesFilter$2.invoke(CheckForUpdatesFilter.java:82)
o org.apache.tapestry.ioc.internal.util.ConcurrentBarrier.withRead(ConcurrentBarrier.java:77)
o org.apache.tapestry.internal.services.CheckForUpdatesFilter.service(CheckForUpdatesFilter.java:104)
o org.apache.tapestry.services.TapestryModule$11.service(TapestryModule.java:1179)
o org.apache.tapestry.TapestryFilter.doFilter(TapestryFilter.java:115)
o org.mortbay.jetty.servlet.WebApplicationHandler$CachedChain.doFilter(WebApplicationHandler.java:821)
o org.mortbay.jetty.servlet.WebApplicationHandler.dispatch(WebApplicationHandler.java:471)
o org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:568)
o org.mortbay.http.HttpContext.handle(HttpContext.java:1530)
o org.mortbay.jetty.servlet.WebApplicationContext.handle(WebApplicationContext.java:633)
o org.mortbay.http.HttpContext.handle(HttpContext.java:1482)
o org.mortbay.http.HttpServer.service(HttpServer.java:909)
o org.mortbay.http.HttpConnection.service(HttpConnection.java:820)
o org.mortbay.http.HttpConnection.handleNext(HttpConnection.java:986)
o org.mortbay.http.HttpConnection.handle(HttpConnection.java:837)
o org.mortbay.http.SocketListener.handleConnection(SocketListener.java:245)
o org.mortbay.util.ThreadedServer.handle(ThreadedServer.java:357)
o org.mortbay.util.ThreadPool$PoolThread.run(ThreadPool.java:534)

boolean onPrepareFromForm()
{
// Fire a new prepare event to be consumed by the container. This is the container's
// chance to ensure that there's an object to edit.

_resources.triggerEvent(Form.PREPARE, null, null);

if (_model == null)

{ Class<? extends Object> beanType = _object.getClass(); // line 205 _model = _modelSource.create(beanType, true, _resources.getContainerResources()); }

return true; // abort the form's prepare event
}

It should fail with a reasonable message and/or implement TAPESTRY-1359.

Issue Links

• is part of: TAPESTRY-1359 The BeanEditForm component should attempt to create its object parameter if it is null