Header component not loading intermittently

Akanksha

Hi All

 

Our header component does not load intermittently. When I checked the logs, I found below error stackTrace :

 

14:40:27,128 ERROR [RuntimeComponent] Component Failed to render
java.lang.RuntimeException: Failed to execute rules and externals
        at com.interwoven.livesite.runtime.model.component.Component.executeExternal(Component.java:455)
        at com.interwoven.livesite.runtime.model.page.RuntimeComponent.buildComponentTransformData(RuntimeComponent.java:272)
        at com.interwoven.livesite.runtime.model.page.RuntimeComponent.transform(RuntimeComponent.java:370)
        at com.interwoven.livesite.runtime.model.page.RuntimeComponent.transform(RuntimeComponent.java:341)
        at com.interwoven.livesite.runtime.page.PageTokenVariableComponent.transformComponent(PageTokenVariableComponent.java:315)
        at com.interwoven.livesite.runtime.page.PageTokenVariableComponent.renderNoCache(PageTokenVariableComponent.java:221)
        at com.interwoven.livesite.runtime.page.PageTokenVariableComponent.preRender(PageTokenVariableComponent.java:106)
        at com.interwoven.livesite.runtime.page.PageTokenContainer.preRender(PageTokenContainer.java:260)
        at com.interwoven.livesite.runtime.model.page.RuntimePage.transformAndOutput(RuntimePage.java:463)
        at com.interwoven.livesite.runtime.model.page.RuntimePage.transformAndOutput(RuntimePage.java:444)
        at com.interwoven.livesite.runtime.rendering.RenderingManager.doOutputPage(RenderingManager.java:1316)
        at com.interwoven.livesite.runtime.rendering.RenderingManager.renderPageGoal(RenderingManager.java:386)
        at com.interwoven.livesite.runtime.rendering.RenderingManager.render(RenderingManager.java:256)
        at com.interwoven.livesite.runtime.filter.LiveSiteFilter.doFilter(LiveSiteFilter.java:136)
        at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346)
        at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:259)
        at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
        at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.wrapRun(WebAppServletContext.java:3730)
        at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3696)
        at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
        at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:120)
        at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2273)
        at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2179)
        at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1490)
        at weblogic.work.ExecuteThread.execute(ExecuteThread.java:256)
        at weblogic.work.ExecuteThread.run(ExecuteThread.java:221)
Caused by: java.lang.RuntimeException: Execution exception in com.interwoven.livesite.external.ExternalCall@e9b2c7d[object=com.gec.ls.core.display.external.HeaderExternal,method=public org.dom4j.Document executeExternal(com.interwoven.livesite.runtime.RequestContext,),scope=local,parameters={},prefixCalls=[]]
        at com.interwoven.livesite.common.pojo.PojoMethodCall.execute(PojoMethodCall.java:460)
        at com.interwoven.livesite.external.ExternalCall.execute(ExternalCall.java:142)
        at com.interwoven.livesite.runtime.model.component.Component.executeExternal(Component.java:426)
        ... 25 more

Caused by: java.lang.RuntimeException: Could not invoke method: executeExternal, reason: The node "org.dom4j.tree.DefaultElement@16138800 [Element: <description_container attributes: []/>]" could not be added to the element "node" because: The Node already has an existing parent of "node"
        at com.interwoven.livesite.common.util.ClassUtils.executeMethod(ClassUtils.java:113)
        at com.interwoven.livesite.common.pojo.PojoMethodCall.executeMethod(PojoMethodCall.java:401)
        at com.interwoven.livesite.common.pojo.PojoMethodCall.execute(PojoMethodCall.java:455)
        ... 27 more
Caused by: java.lang.reflect.InvocationTargetException
        at sun.reflect.GeneratedMethodAccessor138.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at com.interwoven.livesite.common.util.ClassUtils.executeMethod(ClassUtils.java:105)
        ... 29 more
Caused by: org.dom4j.IllegalAddException: The node "org.dom4j.tree.DefaultElement@16138800 [Element: <description_container attributes: []/>]" could not be added to the element "node" because: The Node already has an existing parent of "node"
        at org.dom4j.tree.AbstractElement.addNode(AbstractElement.java:1521)
        at org.dom4j.tree.AbstractElement.add(AbstractElement.java:1002)
        at com.gec.ls.core.display.external.helper.HeaderHelper.addDescriptionNodeDecorator(HeaderHelper.java:353)
        at com.gec.ls.core.display.external.helper.HeaderHelper.prepareHeaderResponse(HeaderHelper.java:147)
        at com.gec.ls.core.display.external.helper.HeaderHelper.getHeaderDocument(HeaderHelper.java:85)
        at com.gec.ls.core.display.external.HeaderExternal.executeExternal(HeaderExternal.java:29)
        ... 33 more

 

Please advice in this.

 

Thanks & Regards

Akanksha Singh

 

 

Garth McMillan

It sounds like you are trying to copy an XML node from another document or moving within the same document perhaps.

 

If you are using Dom4j, you may need to use Node.detach() - http://dom4j.sourceforge.net/dom4j-1.6.1/apidocs/org/dom4j/Node.html#detach() - before copying/moving the node.