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https://issues.apache.org/jira/browse/TAPESTRY-1936?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Howard M. Lewis Ship closed TAPESTRY-1936.
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Resolution: Fixed
Fix Version/s: 5.0.7
> Non-null return value from form action event causes exception
> -------------------------------------------------------------
>
> Key: TAPESTRY-1936
> URL: https://issues.apache.org/jira/browse/TAPESTRY-1936
> Project: Tapestry
> Issue Type: Bug
> Affects Versions: 5.0.7
> Environment: Tapestry snapshot 5.0.7 build 41 and up.
> Reporter: Filip S. Adamsen
> Assignee: Howard M. Lewis Ship
> Priority: Blocker
> Fix For: 5.0.7
>
>
> I'm seeing weird exceptions when returning non-null values from form action
> events. It happens consistently - I have tested various return types
> including String, Class, Link and Component - they all result in an exception
> like the one in the stack trace below.
> Going back to build 40 of 5.0.7-SNAPSHOT this doesn't happen, so it must have
> something to do with a recent change in the codebase.
> [ERROR] RequestExceptionHandler Processing of request failed with uncaught
> exception: An event handler for component news/List:layout.loginform returned
> the value true (from method
> org.apache.tapestry.corelib.components.Form.onAction(java.lang.Object[]) (at
> Form.java:277)). Return type java.lang.Boolean can not be handled.
> Configured return types are java.lang.Class, java.lang.String,
> org.apache.tapestry.Link, org.apache.tapestry.StreamResponse,
> org.apache.tapestry.runtime.Component.org.apache.tapestry.runtime.ComponentEventException:
> An event handler for component news/List:layout.loginform returned the value
> true (from method
> org.apache.tapestry.corelib.components.Form.onAction(java.lang.Object[]) (at
> Form.java:277)). Return type java.lang.Boolean can not be handled. Configured
> return types are java.lang.Class, java.lang.String, org.apache.tapestry.Link,
> org.apache.tapestry.StreamResponse, org.apache.tapestry.runtime.Component.
> at
> org.apache.tapestry.corelib.components.Form.handleComponentEvent(Form.java)
> at
> org.apache.tapestry.internal.structure.ComponentPageElementImpl.handleEvent(ComponentPageElementImpl.java:863)
> at
> org.apache.tapestry.internal.structure.ComponentPageElementImpl.triggerEvent(ComponentPageElementImpl.java:968)
> at
> org.apache.tapestry.internal.services.ComponentActionRequestHandlerImpl.handle(ComponentActionRequestHandlerImpl.java:88)
> at
> org.apache.tapestry.internal.services.AjaxFilter.handle(AjaxFilter.java:47)
> at
> $ComponentActionRequestHandler_116832b270c.handle($ComponentActionRequestHandler_116832b270c.java)
> at
> org.apache.tapestry.services.TapestryModule$30.handle(TapestryModule.java:1892)
> at
> $ComponentActionRequestHandler_116832b270c.handle($ComponentActionRequestHandler_116832b270c.java)
> at
> $ComponentActionRequestHandler_116832b2686.handle($ComponentActionRequestHandler_116832b2686.java)
> at
> org.apache.tapestry.internal.services.ComponentActionDispatcher.dispatch(ComponentActionDispatcher.java:113)
> at $Dispatcher_116832b2687.dispatch($Dispatcher_116832b2687.java)
> at $Dispatcher_116832b267b.dispatch($Dispatcher_116832b267b.java)
> at
> org.apache.tapestry.services.TapestryModule$12.service(TapestryModule.java:932)
> at
> org.apache.tapestry.internal.services.LocalizationFilter.service(LocalizationFilter.java:43)
> at
> $RequestHandler_116832b267c.service($RequestHandler_116832b267c.java)
> at
> org.apache.tapestry.services.TapestryModule$2.service(TapestryModule.java:521)
> at
> $RequestHandler_116832b267c.service($RequestHandler_116832b267c.java)
> at
> org.apache.tapestry.internal.services.StaticFilesFilter.service(StaticFilesFilter.java:79)
> at
> $RequestHandler_116832b267c.service($RequestHandler_116832b267c.java)
> at
> com.fsadev.tapestry.utilities.services.LibModule$1.service(LibModule.java:22)
> at
> $RequestHandler_116832b267c.service($RequestHandler_116832b267c.java)
> at
> org.apache.tapestry.internal.services.CheckForUpdatesFilter$2.invoke(CheckForUpdatesFilter.java:94)
> at
> org.apache.tapestry.internal.services.CheckForUpdatesFilter$2.invoke(CheckForUpdatesFilter.java:85)
> at
> org.apache.tapestry.ioc.internal.util.ConcurrentBarrier.withRead(ConcurrentBarrier.java:77)
> at
> org.apache.tapestry.internal.services.CheckForUpdatesFilter.service(CheckForUpdatesFilter.java:107)
> at
> $RequestHandler_116832b267c.service($RequestHandler_116832b267c.java)
> at
> $RequestHandler_116832b2675.service($RequestHandler_116832b2675.java)
> at
> org.apache.tapestry.services.TapestryModule$11.service(TapestryModule.java:915)
> at
> $HttpServletRequestHandler_116832b2674.service($HttpServletRequestHandler_116832b2674.java)
> at
> org.apache.tapestry.TapestryFilter.doFilter(TapestryFilter.java:164)
> at
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
> at
> org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:360)
> at
> org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
> at
> org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
> at
> org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:712)
> at
> org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405)
> at
> org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:211)
> at
> org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114)
> at
> org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:139)
> at org.mortbay.jetty.Server.handle(Server.java:313)
> at
> org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:506)
> at
> org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:844)
> at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:644)
> at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211)
> at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:381)
> at
> org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:396)
> at
> org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:442)
> Caused by: org.apache.tapestry.ioc.internal.util.TapestryException: An event
> handler for component news/List:layout.loginform returned the value true
> (from method
> org.apache.tapestry.corelib.components.Form.onAction(java.lang.Object[]) (at
> Form.java:277)). Return type java.lang.Boolean can not be handled.
> Configured return types are java.lang.Class, java.lang.String,
> org.apache.tapestry.Link, org.apache.tapestry.StreamResponse,
> org.apache.tapestry.runtime.Component.
> at
> org.apache.tapestry.internal.services.ObjectComponentEventResultProcessor.processComponentEvent(ObjectComponentEventResultProcessor.java:41
> )
> at
> $ComponentEventResultProcessor_116832b2768.processComponentEvent($ComponentEventResultProcessor_116832b2768.java)
> at
> $ComponentEventResultProcessor_116832b2656.processComponentEvent($ComponentEventResultProcessor_116832b2656.java)
> at
> org.apache.tapestry.internal.services.ComponentActionRequestHandlerImpl$1.handleResult(ComponentActionRequestHandlerImpl.java:68)
> at
> org.apache.tapestry.internal.services.EventImpl.storeResult(EventImpl.java:62)
> ... 47 more
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