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Re: Jelly Errors / Debug Advice?: msg#00089

java.hudson.user

Subject: Re: Jelly Errors / Debug Advice?

I think this is actually a bug in Functions, but any tips on debugging Jelly would still be handy :)

https://hudson.dev.java.net/issues/show_bug.cgi?id=252


On 1/25/07, Eric Crahen <eric.crahen.lists@xxxxxxxxx> wrote:
I'm venturing into writing plugins for the first time, so I'm just starting to learn how the global.jelly and config.jelly's work. This is my first time playing with jelly so its all a learning experience for me.

After activating the HelloWorld plugin, I've noticed that when I go into the Job Configuration screen, it renders correctly - but I sometimes see the error below depending on what I've done to the file. For example, if I comment out the body of the xml so its just the opening and closing j:jelly tag, or if I actually remove the configure.jelly file altogether. I only know the problem has to do with this file because of the screen it happens on and when I see errors on stderr (and because I'm only changing one thing at a time)

From the error, I really don't know what is wrong - or what file is there. I can deduce the file with the problem through the means above, but I haven't yet learned what is expected. I'm guessing it must be the missing f:entry tag. I'll figure it out shortly, but I'm wondering if there are some techniques to better debug this kind of stuff that you've developed through your experience in creating the built-in jelly components?

Thanks,

2007-01-25 23:38:28.087::INFO:  Started SelectChannelConnector @ 0.0.0.0:8080
java.lang.NullPointerException
        at hudson.Functions.isMultiline(Functions.java :312)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:585)
        at org.apache.commons.jexl.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:255)
        at org.apache.commons.jexl.parser.ASTMethod.execute(ASTMethod.java:104)
        at org.apache.commons.jexl.parser.ASTReference.execute(ASTReference.java:82)
        at org.apache.commons.jexl.parser.ASTReference.value (ASTReference.java:56)
        at org.apache.commons.jexl.parser.ASTReferenceExpression.value(ASTReferenceExpression.java:50)
        at org.apache.commons.jexl.ExpressionImpl.evaluate(ExpressionImpl.java:79)
        at org.apache.commons.jelly._expression_.jexl.JexlExpression.evaluate(JexlExpression.java:69)
        at org.apache.commons.jelly._expression_.ExpressionSupport.evaluateRecurse(ExpressionSupport.java:61)
        at org.apache.commons.jelly._expression_.ExpressionSupport.evaluateAsBoolean (ExpressionSupport.java:71)
        at org.apache.commons.jelly.tags.core.WhenTag.doTag(WhenTag.java:44)
        at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:262)
        at org.apache.commons.jelly.impl.ScriptBlock.run (ScriptBlock.java:95)
        at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:186)
        at org.apache.commons.jelly.tags.core.ChooseTag.doTag(ChooseTag.java:38)
        at org.apache.commons.jelly.impl.TagScript.run (TagScript.java:262)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
        at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:186)
        at org.apache.commons.jelly.impl.StaticTag.doTag (StaticTag.java:65)
        at org.apache.commons.jelly.impl.StaticTagScript.run(StaticTagScript.java:112)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
        at org.apache.commons.jelly.TagSupport.invokeBody (TagSupport.java:186)
        at org.apache.commons.jelly.tags.core.JellyTag.doTag(JellyTag.java:45)
        at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:262)
        at org.apache.commons.jelly.impl.DynamicTag.doTag (DynamicTag.java:80)
        at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:262)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
        at org.apache.commons.jelly.tags.define.InvokeBodyTag.doTag (InvokeBodyTag.java:91)
        at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:262)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
        at org.apache.commons.jelly.TagSupport.invokeBody (TagSupport.java:186)
        at org.apache.commons.jelly.impl.StaticTag.doTag(StaticTag.java:65)
        at org.apache.commons.jelly.impl.StaticTagScript.run(StaticTagScript.java:112)
        at org.apache.commons.jelly.impl.ScriptBlock.run (ScriptBlock.java:95)
        at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:186)
        at org.apache.commons.jelly.impl.StaticTag.doTag(StaticTag.java:65)
        at org.apache.commons.jelly.impl.StaticTagScript.run (StaticTagScript.java:112)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
        at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:186)
        at org.apache.commons.jelly.tags.core.JellyTag.doTag (JellyTag.java:45)
        at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:262)
        at org.apache.commons.jelly.impl.DynamicTag.doTag(DynamicTag.java:80)
        at org.apache.commons.jelly.impl.TagScript.run (TagScript.java:262)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
        at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:186)
        at org.apache.commons.jelly.tags.core.JellyTag.doTag (JellyTag.java:45)
        at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:262)
        at org.kohsuke.stapler.jelly.IncludeTag.doTag(IncludeTag.java:83)
        at org.apache.commons.jelly.impl.TagScript.run (TagScript.java:262)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
        at org.apache.commons.jelly.tags.define.InvokeBodyTag.doTag(InvokeBodyTag.java:91)
        at org.apache.commons.jelly.impl.TagScript.run (TagScript.java:262)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
        at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:186)
        at org.apache.commons.jelly.tags.core.JellyTag.doTag (JellyTag.java:45)
        at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:262)
        at org.apache.commons.jelly.impl.DynamicTag.doTag(DynamicTag.java:80)
        at org.apache.commons.jelly.impl.TagScript.run (TagScript.java:262)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
        at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:186)
        at org.apache.commons.jelly.tags.core.ForEachTag.doTag (ForEachTag.java:150)
        at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:262)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
        at org.apache.commons.jelly.tags.define.InvokeBodyTag.doTag (InvokeBodyTag.java:91)
        at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:262)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
        at org.apache.commons.jelly.TagSupport.invokeBody (TagSupport.java:186)
        at org.apache.commons.jelly.tags.core.JellyTag.doTag(JellyTag.java:45)
        at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:262)
        at org.apache.commons.jelly.impl.DynamicTag.doTag (DynamicTag.java:80)
        at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:262)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
        at org.apache.commons.jelly.TagSupport.invokeBody (TagSupport.java:186)
        at org.apache.commons.jelly.tags.core.JellyTag.doTag(JellyTag.java:45)
        at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:262)
        at org.apache.commons.jelly.impl.DynamicTag.doTag (DynamicTag.java:80)
        at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:262)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
        at org.apache.commons.jelly.TagSupport.invokeBody (TagSupport.java:186)
        at org.apache.commons.jelly.tags.core.JellyTag.doTag(JellyTag.java:45)
        at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:262)
        at org.kohsuke.stapler.jelly.IncludeTag.doTag (IncludeTag.java:83)
        at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:262)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
        at org.apache.commons.jelly.tags.define.InvokeBodyTag.doTag (InvokeBodyTag.java:91)
        at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:262)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
        at org.apache.commons.jelly.TagSupport.invokeBody (TagSupport.java:186)
        at org.apache.commons.jelly.impl.StaticTag.doTag(StaticTag.java:65)
        at org.apache.commons.jelly.impl.StaticTagScript.run(StaticTagScript.java:112)
        at org.apache.commons.jelly.impl.ScriptBlock.run (ScriptBlock.java:95)
        at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:186)
        at org.apache.commons.jelly.impl.StaticTag.doTag(StaticTag.java:65)
        at org.apache.commons.jelly.impl.StaticTagScript.run (StaticTagScript.java:112)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
        at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:186)
        at org.apache.commons.jelly.tags.core.JellyTag.doTag (JellyTag.java:45)
        at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:262)
        at org.apache.commons.jelly.impl.DynamicTag.doTag(DynamicTag.java:80)
        at org.apache.commons.jelly.impl.TagScript.run (TagScript.java:262)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
        at org.apache.commons.jelly.tags.define.InvokeBodyTag.doTag(InvokeBodyTag.java:91)
        at org.apache.commons.jelly.impl.TagScript.run (TagScript.java:262)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
        at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:186)
        at org.apache.commons.jelly.tags.core.IfTag.doTag (IfTag.java:42)
        at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:262)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
        at org.apache.commons.jelly.TagSupport.invokeBody (TagSupport.java:186)
        at org.apache.commons.jelly.tags.core.JellyTag.doTag(JellyTag.java:45)
        at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:262)
        at org.apache.commons.jelly.impl.DynamicTag.doTag (DynamicTag.java:80)
        at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:262)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
        at org.apache.commons.jelly.tags.define.InvokeBodyTag.doTag (InvokeBodyTag.java:91)
        at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:262)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
        at org.apache.commons.jelly.TagSupport.invokeBody (TagSupport.java:186)
        at org.apache.commons.jelly.impl.StaticTag.doTag(StaticTag.java:65)
        at org.apache.commons.jelly.impl.StaticTagScript.run(StaticTagScript.java:112)
        at org.apache.commons.jelly.impl.ScriptBlock.run (ScriptBlock.java:95)
        at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:186)
        at org.apache.commons.jelly.impl.StaticTag.doTag(StaticTag.java:65)
        at org.apache.commons.jelly.impl.StaticTagScript.run (StaticTagScript.java:112)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
        at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:186)
        at org.apache.commons.jelly.impl.StaticTag.doTag (StaticTag.java:65)
        at org.apache.commons.jelly.impl.StaticTagScript.run(StaticTagScript.java:112)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
        at org.apache.commons.jelly.TagSupport.invokeBody (TagSupport.java:186)
        at org.apache.commons.jelly.impl.StaticTag.doTag(StaticTag.java:65)
        at org.apache.commons.jelly.impl.StaticTagScript.run(StaticTagScript.java:112)
        at org.apache.commons.jelly.impl.ScriptBlock.run (ScriptBlock.java:95)
        at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:186)
        at org.apache.commons.jelly.impl.StaticTag.doTag(StaticTag.java:65)
        at org.apache.commons.jelly.impl.StaticTagScript.run (StaticTagScript.java:112)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
        at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:186)
        at org.apache.commons.jelly.tags.core.JellyTag.doTag (JellyTag.java:45)
        at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:262)
        at org.apache.commons.jelly.impl.DynamicTag.doTag(DynamicTag.java:80)
        at org.apache.commons.jelly.impl.TagScript.run (TagScript.java:262)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
        at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:186)
        at org.apache.commons.jelly.tags.core.JellyTag.doTag (JellyTag.java:45)
        at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:262)
        at org.kohsuke.stapler.jelly.JellyClassTearOff.invokeScript(JellyClassTearOff.java:65)
        at org.kohsuke.stapler.MetaClass$3.dispatch (MetaClass.java:100)
        at org.kohsuke.stapler.Stapler.invoke(Stapler.java:224)
        at org.kohsuke.stapler.MetaClass$9.doDispatch(MetaClass.java:207)
        at org.kohsuke.stapler.NameBasedDispatcher.dispatch (NameBasedDispatcher.java:30)
        at org.kohsuke.stapler.Stapler.invoke(Stapler.java:224)
        at org.kohsuke.stapler.Stapler.invoke(Stapler.java:169)
        at org.kohsuke.stapler.Stapler.service(Stapler.java :68)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
        at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:491)
        at org.mortbay.jetty.servlet.ServletHandler.handle (ServletHandler.java:367)
        at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:185)
        at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
        at org.mortbay.jetty.handler.ContextHandler.handle (ContextHandler.java:689)
        at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:391)
        at org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:146)
        at org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114)
        at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:139)
        at org.mortbay.jetty.Server.handle(Server.java :285)
        at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:457)
        at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:751)
        at org.mortbay.jetty.HttpParser.parseNext (HttpParser.java:500)
        at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:209)
        at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:357)
        at org.mortbay.io.nio.SelectChannelEndPoint.run (SelectChannelEndPoint.java:329)
        at org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:475)
[WARN] JexlExpression - -Caught exception evaluating: h.isMultiline(attrs.value). Reason: java.lang.NullPointerException <java.lang.NullPointerException>
java.lang.NullPointerException
        at hudson.Functions.isMultiline(Functions.java:312)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke (Method.java:585)
        at org.apache.commons.jexl.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:255)
        at org.apache.commons.jexl.parser.ASTMethod.execute(ASTMethod.java:104)
        at org.apache.commons.jexl.parser.ASTReference.execute(ASTReference.java:82)
        at org.apache.commons.jexl.parser.ASTReference.value(ASTReference.java:56)
        at org.apache.commons.jexl.parser.ASTReferenceExpression.value (ASTReferenceExpression.java:50)
        at org.apache.commons.jexl.ExpressionImpl.evaluate(ExpressionImpl.java:79)
        at org.apache.commons.jelly._expression_.jexl.JexlExpression.evaluate(JexlExpression.java:69)
        at org.apache.commons.jelly._expression_.ExpressionSupport.evaluateRecurse(ExpressionSupport.java:61)
        at org.apache.commons.jelly._expression_.ExpressionSupport.evaluateAsBoolean(ExpressionSupport.java :71)
        at org.apache.commons.jelly.tags.core.WhenTag.doTag(WhenTag.java:44)
        at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:262)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java :95)
        at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:186)
        at org.apache.commons.jelly.tags.core.ChooseTag.doTag(ChooseTag.java:38)
        at org.apache.commons.jelly.impl.TagScript.run (TagScript.java:262)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
        at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:186)
        at org.apache.commons.jelly.impl.StaticTag.doTag (StaticTag.java:65)
        at org.apache.commons.jelly.impl.StaticTagScript.run(StaticTagScript.java:112)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
        at org.apache.commons.jelly.TagSupport.invokeBody (TagSupport.java:186)
        at org.apache.commons.jelly.tags.core.JellyTag.doTag(JellyTag.java:45)
        at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:262)
        at org.apache.commons.jelly.impl.DynamicTag.doTag (DynamicTag.java:80)
        at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:262)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
        at org.apache.commons.jelly.tags.define.InvokeBodyTag.doTag (InvokeBodyTag.java:91)
        at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:262)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
        at org.apache.commons.jelly.TagSupport.invokeBody (TagSupport.java:186)
        at org.apache.commons.jelly.impl.StaticTag.doTag(StaticTag.java:65)
        at org.apache.commons.jelly.impl.StaticTagScript.run(StaticTagScript.java:112)
        at org.apache.commons.jelly.impl.ScriptBlock.run (ScriptBlock.java:95)
        at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:186)
        at org.apache.commons.jelly.impl.StaticTag.doTag(StaticTag.java:65)
        at org.apache.commons.jelly.impl.StaticTagScript.run (StaticTagScript.java:112)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
        at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:186)
        at org.apache.commons.jelly.tags.core.JellyTag.doTag (JellyTag.java:45)
        at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:262)
        at org.apache.commons.jelly.impl.DynamicTag.doTag(DynamicTag.java:80)
        at org.apache.commons.jelly.impl.TagScript.run (TagScript.java:262)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
        at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:186)
        at org.apache.commons.jelly.tags.core.JellyTag.doTag (JellyTag.java:45)
        at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:262)
        at org.kohsuke.stapler.jelly.IncludeTag.doTag(IncludeTag.java:83)
        at org.apache.commons.jelly.impl.TagScript.run (TagScript.java:262)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
        at org.apache.commons.jelly.tags.define.InvokeBodyTag.doTag(InvokeBodyTag.java:91)
        at org.apache.commons.jelly.impl.TagScript.run (TagScript.java:262)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
        at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:186)
        at org.apache.commons.jelly.tags.core.JellyTag.doTag (JellyTag.java:45)
        at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:262)
        at org.apache.commons.jelly.impl.DynamicTag.doTag(DynamicTag.java:80)
        at org.apache.commons.jelly.impl.TagScript.run (TagScript.java:262)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
        at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:186)
        at org.apache.commons.jelly.tags.core.ForEachTag.doTag (ForEachTag.java:150)
        at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:262)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
        at org.apache.commons.jelly.tags.define.InvokeBodyTag.doTag (InvokeBodyTag.java:91)
        at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:262)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
        at org.apache.commons.jelly.TagSupport.invokeBody (TagSupport.java:186)
        at org.apache.commons.jelly.tags.core.JellyTag.doTag(JellyTag.java:45)
        at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:262)
        at org.apache.commons.jelly.impl.DynamicTag.doTag (DynamicTag.java:80)
        at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:262)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
        at org.apache.commons.jelly.TagSupport.invokeBody (TagSupport.java:186)
        at org.apache.commons.jelly.tags.core.JellyTag.doTag(JellyTag.java:45)
        at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:262)
        at org.apache.commons.jelly.impl.DynamicTag.doTag (DynamicTag.java:80)
        at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:262)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
        at org.apache.commons.jelly.TagSupport.invokeBody (TagSupport.java:186)
        at org.apache.commons.jelly.tags.core.JellyTag.doTag(JellyTag.java:45)
        at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:262)
        at org.kohsuke.stapler.jelly.IncludeTag.doTag (IncludeTag.java:83)
        at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:262)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
        at org.apache.commons.jelly.tags.define.InvokeBodyTag.doTag (InvokeBodyTag.java:91)
        at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:262)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
        at org.apache.commons.jelly.TagSupport.invokeBody (TagSupport.java:186)
        at org.apache.commons.jelly.impl.StaticTag.doTag(StaticTag.java:65)
        at org.apache.commons.jelly.impl.StaticTagScript.run(StaticTagScript.java:112)
        at org.apache.commons.jelly.impl.ScriptBlock.run (ScriptBlock.java:95)
        at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:186)
        at org.apache.commons.jelly.impl.StaticTag.doTag(StaticTag.java:65)
        at org.apache.commons.jelly.impl.StaticTagScript.run (StaticTagScript.java:112)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
        at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:186)
        at org.apache.commons.jelly.tags.core.JellyTag.doTag (JellyTag.java:45)
        at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:262)
        at org.apache.commons.jelly.impl.DynamicTag.doTag(DynamicTag.java:80)
        at org.apache.commons.jelly.impl.TagScript.run (TagScript.java:262)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
        at org.apache.commons.jelly.tags.define.InvokeBodyTag.doTag(InvokeBodyTag.java:91)
        at org.apache.commons.jelly.impl.TagScript.run (TagScript.java:262)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
        at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:186)
        at org.apache.commons.jelly.tags.core.IfTag.doTag (IfTag.java:42)
        at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:262)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
        at org.apache.commons.jelly.TagSupport.invokeBody (TagSupport.java:186)
        at org.apache.commons.jelly.tags.core.JellyTag.doTag(JellyTag.java:45)
        at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:262)
        at org.apache.commons.jelly.impl.DynamicTag.doTag (DynamicTag.java:80)
        at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:262)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
        at org.apache.commons.jelly.tags.define.InvokeBodyTag.doTag (InvokeBodyTag.java:91)
        at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:262)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
        at org.apache.commons.jelly.TagSupport.invokeBody (TagSupport.java:186)
        at org.apache.commons.jelly.impl.StaticTag.doTag(StaticTag.java:65)
        at org.apache.commons.jelly.impl.StaticTagScript.run(StaticTagScript.java:112)
        at org.apache.commons.jelly.impl.ScriptBlock.run (ScriptBlock.java:95)
        at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:186)
        at org.apache.commons.jelly.impl.StaticTag.doTag(StaticTag.java:65)
        at org.apache.commons.jelly.impl.StaticTagScript.run (StaticTagScript.java:112)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
        at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:186)
        at org.apache.commons.jelly.impl.StaticTag.doTag (StaticTag.java:65)
        at org.apache.commons.jelly.impl.StaticTagScript.run(StaticTagScript.java:112)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
        at org.apache.commons.jelly.TagSupport.invokeBody (TagSupport.java:186)
        at org.apache.commons.jelly.impl.StaticTag.doTag(StaticTag.java:65)
        at org.apache.commons.jelly.impl.StaticTagScript.run(StaticTagScript.java:112)
        at org.apache.commons.jelly.impl.ScriptBlock.run (ScriptBlock.java:95)
        at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:186)
        at org.apache.commons.jelly.impl.StaticTag.doTag(StaticTag.java:65)
        at org.apache.commons.jelly.impl.StaticTagScript.run (StaticTagScript.java:112)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
        at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:186)
        at org.apache.commons.jelly.tags.core.JellyTag.doTag (JellyTag.java:45)
        at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:262)
        at org.apache.commons.jelly.impl.DynamicTag.doTag(DynamicTag.java:80)
        at org.apache.commons.jelly.impl.TagScript.run (TagScript.java:262)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
        at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:186)
        at org.apache.commons.jelly.tags.core.JellyTag.doTag (JellyTag.java:45)
        at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:262)
        at org.kohsuke.stapler.jelly.JellyClassTearOff.invokeScript(JellyClassTearOff.java:65)
        at org.kohsuke.stapler.MetaClass$3.dispatch (MetaClass.java:100)
        at org.kohsuke.stapler.Stapler.invoke(Stapler.java:224)
        at org.kohsuke.stapler.MetaClass$9.doDispatch(MetaClass.java:207)
        at org.kohsuke.stapler.NameBasedDispatcher.dispatch (NameBasedDispatcher.java:30)
        at org.kohsuke.stapler.Stapler.invoke(Stapler.java:224)
        at org.kohsuke.stapler.Stapler.invoke(Stapler.java:169)
        at org.kohsuke.stapler.Stapler.service(Stapler.java :68)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
        at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:491)
        at org.mortbay.jetty.servlet.ServletHandler.handle (ServletHandler.java:367)
        at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:185)
        at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
        at org.mortbay.jetty.handler.ContextHandler.handle (ContextHandler.java:689)
        at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:391)
        at org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:146)
        at org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114)
        at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:139)
        at org.mortbay.jetty.Server.handle(Server.java :285)
        at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:457)
        at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:751)
        at org.mortbay.jetty.HttpParser.parseNext (HttpParser.java:500)
        at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:209)
        at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:357)
        at org.mortbay.io.nio.SelectChannelEndPoint.run (SelectChannelEndPoint.java:329)
        at org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:475)
[WARN] JexlExpression - -Caught exception evaluating: h.isMultiline(attrs.value). Reason: java.lang.NullPointerException <java.lang.NullPointerException>


--

- Eric



--

- Eric
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