[jboss-user] [JBoss Seam] - pageContext is null in page action

[mgrouch]

pageContext is null in page action. How is this possible?

My home.page.xml

<page xmlns="http://jboss.com/products/seam/pages"
  |       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  |       xsi:schemaLocation="http://jboss.com/products/seam/pages http://jboss.com/products/seam/pages-2.0.xsd"
  |       login-required="true"
  |       conversation-required="false"
  |       action="#{myBean.beginConversation}">
  |     <!-- 
  | 	<begin-conversation join="true"/>
  |      -->
  | </page>

and action code:

	public String beginConversation() {
  | 		System.err.println("beginConversation()");
  | 		Manager mgr = Manager.instance();
  | 		String id = org.jboss.seam.util.Id.nextId();
  | 		mgr.setCurrentConversationId(id);
  | 		List<String> stack = new ArrayList<String>();
  | 		stack.add(id);
  | 		mgr.setCurrentConversationIdStack(stack);
  | 		System.err.println("beginConversation() - exit");
  | 		System.err.println("page context = " + Contexts.getPageContext());
  | 		return null;
  | 	}

On second click on a page I get this exception:

anonymous wrote : java.lang.NullPointerException
  |     at org.jboss.seam.navigation.Pages.handleOutcome(Pages.java:561)
  |     at org.jboss.seam.navigation.Page.preRender(Page.java:276)
  |     at org.jboss.seam.navigation.Pages.preRender(Pages.java:292)
  |     at org.jboss.seam.jsf.SeamPhaseListener.preRenderPage(SeamPhaseListener.java:541)
  |     at org.jboss.seam.jsf.SeamPhaseListener.beforeRender(SeamPhaseListener.java:473)
  |     at org.jboss.seam.jsf.SeamPhaseListener.beforeServletPhase(SeamPhaseListener.java:146)
  |     at org.jboss.seam.jsf.SeamPhaseListener.beforePhase(SeamPhaseListener.java:116)
  |     at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:222)
  |     at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:144)
  |     at javax.faces.webapp.FacesServlet.service(FacesServlet.java:245)
  |     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
  |     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
  |     at teamdev.jsf.util.ResourceFilter.doFilter(SourceFile:69)
  |     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
  |     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
  |     at org.apache.myfaces.webapp.filter.ExtensionsFilter.doFilter(ExtensionsFilter.java:147)
  |     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
  |     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
  |     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:83)
  |     at org.jboss.seam.debug.hot.HotDeployFilter.doFilter(HotDeployFilter.java:63)
  |     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
  |     at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:87)
  |     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
  |     at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:63)
  |     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
  |     at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:46)
  |     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
  |     at org.ajax4jsf.framework.ajax.xmlfilter.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:127)
  |     at org.ajax4jsf.framework.ajax.xmlfilter.BaseFilter.doFilter(BaseFilter.java:277)
  |     at org.jboss.seam.web.Ajax4jsfFilter.doFilter(Ajax4jsfFilter.java:40)
  |     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
  |     at org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:140)
  |     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
  |     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
  |     at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
  |     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.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:179)
  |     at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:433)
  |     at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84)
  |     at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
  |     at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
  |     at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:156)
  |     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
  |     at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:241)
  |     at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:853)
  |     at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:579)
  |     at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1513)
  |     at java.lang.Thread.run(Thread.java:595)

Thanks

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