[jboss-user] [JBoss Seam] - Re: Problems using Ajax4jsf to Seam Hibernate3 sample app
yj4jboss
do-not-reply at jboss.com
Mon Oct 9 06:49:43 EDT 2006
Hello Todd,
Thnx for helping out with the Ajax Implementation on JBoss. I have managed to get it working with command buttons....I am now trying to implement the example found at http://livedemo.exadel.com/a4j-dropDownBoxes/
My SFSB is as follows:
|
| @Stateful
| @Scope(ScopeType.SESSION)
| @Name("AjaxBean")
| public class AjaxBean implements AjaxBeanLocal{
|
| private static final Log log = LogFactory.getLog(AjaxBean.class);
|
|
| private String property;
|
| private String property_text;
|
|
| public String getProperty_text() {
| return property_text;
| }
|
|
| public void setProperty_text(String property_text) {
| this.property_text = property_text;
| }
|
|
|
| public String getProperty() {
| return property;
| }
|
|
|
| public void setProperty(String property) {
| this.property = property;
| }
|
| public void setProperty(){
| log.debug("Setting Property to PropertyText");
| this.property = this.getProperty_text();
| }
|
|
| @Remove @Destroy
| public void destroy(){
|
| }
|
|
| }
|
|
My XHTML page is as follows:
|
| <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
| "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
| <html xmlns="http://www.w3.org/1999/xhtml"
| xmlns:s="http://jboss.com/products/seam/taglib"
| xmlns:ui="http://java.sun.com/jsf/facelets"
| xmlns:f="http://java.sun.com/jsf/core"
| xmlns:a4j="https://ajax4jsf.dev.java.net/ajax"
| xmlns:h="http://java.sun.com/jsf/html">
|
| <body>
| <f:loadBundle basename="messages" var="msg"/>
| <ui:composition template="/WEB-INF/layout/template.xhtml">
|
| <ui:define name="header">
| <ui:include src="/WEB-INF/layout/header.xhtml" />
| </ui:define>
|
| <ui:define name="body">
|
| <f:view>
| <a4j:region selfRendered="true">
| <a4j:form>
| <a4j:status startStyle="font-color:red" stopText="Ready" startText="Request under process"/>
|
|
| <h:panelGroup style="display:block" id="menuValue" styleClass="px10">
| This is a Test #{AjaxBean.property}
| </h:panelGroup>
|
|
|
| <h:panelGroup id="selectMenu">
| <h:selectOneMenu value="#{AjaxBean.property}">
| <f:selectItem itemValue="car" itemLabel="Car" />
| <f:selectItem itemValue="motorcycle" itemLabel="Motorcycle" />
|
| <a4j:support event="onchange" action="#{AjaxBean.setProperty}"
| reRender="menuValue" />
| </h:selectOneMenu>
| </h:panelGroup>
|
| </a4j:form>
| </a4j:region>
| </f:view>
| </ui:define>
|
| <ui:define name="footer">
| <ui:include src="/WEB-INF/layout/footer.xhtml" />
| </ui:define>
|
| </ui:composition>
| </body>
| </html>
|
|
When i change the value in the drop down menu, i whole page is re-rendered and only the following line is displayed:
| <span id="ajax-update-ids"
|
And this is the stack trace in my log file:
|
| 2006-10-09 14:44:33,578 DEBUG [org.ajax4jsf.framework.renderer.AjaxContainerRenderer] AjaxView RenderChildren() components for AJAX request
| 2006-10-09 14:44:33,578 DEBUG [org.ajax4jsf.framework.renderer.AjaxRendererUtils] Calculate absolute ID for component _id5 as :_id5
| 2006-10-09 14:44:33,578 DEBUG [org.ajax4jsf.framework.renderer.AjaxContainerRenderer] AjaxView encodeChild component for AJAX request with at path : ID _id5
| 2006-10-09 14:44:33,578 DEBUG [org.ajax4jsf.framework.renderer.AjaxContainerRenderer] AjaxView encodeChild component for AJAX request with at path : ID _id7
| 2006-10-09 14:44:33,578 DEBUG [org.ajax4jsf.framework.renderer.AjaxContainerRenderer] AjaxView encodeChild component for AJAX request with at path :_id7: ID _id8
| 2006-10-09 14:44:33,578 DEBUG [org.ajax4jsf.framework.renderer.AjaxContainerRenderer] Render Ajax Area component with ID :_id7:menuValue
| 2006-10-09 14:44:33,578 DEBUG [org.ajax4jsf.framework.renderer.AjaxContainerRenderer] AjaxView encodeChild component for AJAX request with at path :_id7: ID selectMenu
| 2006-10-09 14:44:33,578 DEBUG [org.ajax4jsf.framework.renderer.AjaxContainerRenderer] AjaxView encodeChild component for AJAX request with at path :_id7: ID _id10
| 2006-10-09 14:44:33,578 DEBUG [org.ajax4jsf.framework.renderer.AjaxContainerRenderer] AjaxView encodeChild component for AJAX request with at path :_id7: ID _id13
| 2006-10-09 14:44:33,578 DEBUG [org.ajax4jsf.framework.renderer.AjaxContainerRenderer] AjaxView encodeChild component for AJAX request with at path :_id7: ID _id11
| 2006-10-09 14:44:33,578 DEBUG [org.ajax4jsf.framework.renderer.AjaxContainerRenderer] AjaxView encodeChild component for AJAX request with at path :_id7: ID _id12
| 2006-10-09 14:44:33,578 ERROR [org.apache.myfaces.lifecycle.PhaseListenerManager] Exception in PhaseListener RENDER_RESPONSE(6) beforePhase.
| java.lang.NullPointerException
| at com.sun.facelets.FaceletViewHandler.writeState(FaceletViewHandler.java:722)
| at org.ajax4jsf.framework.renderer.AjaxRendererUtils.writeState(AjaxRendererUtils.java:850)
| at org.ajax4jsf.framework.renderer.AjaxRendererUtils.encodeAreas(AjaxRendererUtils.java:740)
| at org.ajax4jsf.framework.renderer.AjaxContainerRenderer.encodeAjax(AjaxContainerRenderer.java:128)
| at org.ajax4jsf.ajax.UIAjaxRegion.encodeAjax(UIAjaxRegion.java:210)
| at org.ajax4jsf.framework.ajax.AjaxContext.renderAjaxRegion(AjaxContext.java:256)
| at org.ajax4jsf.framework.ajax.AjaxRegionBrige.broadcast(AjaxRegionBrige.java:315)
| at org.ajax4jsf.ajax.UIAjaxRegion.broadcast(UIAjaxRegion.java:87)
| at org.ajax4jsf.framework.ajax.AjaxViewRoot.processEvents(AjaxViewRoot.java:274)
| at org.ajax4jsf.framework.ajax.AjaxViewRoot.broadcastAjaxEvents(AjaxViewRoot.java:290)
| at org.ajax4jsf.framework.renderer.AjaxRenderPhaseListener.processAjaxRender(AjaxRenderPhaseListener.java:150)
| at org.ajax4jsf.framework.renderer.AjaxRenderPhaseListener.beforePhase(AjaxRenderPhaseListener.java:134)
| at org.apache.myfaces.lifecycle.PhaseListenerManager.informPhaseListenersBefore(PhaseListenerManager.java:70)
| at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:373)
| at javax.faces.webapp.FacesServlet.service(FacesServlet.java:138)
| at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
| at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
| at org.jboss.seam.servlet.SeamExceptionFilter.doFilter(SeamExceptionFilter.java:45)
| at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
| at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
| at org.jboss.seam.servlet.SeamRedirectFilter.doFilter(SeamRedirectFilter.java:30)
| at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
| at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
| at org.ajax4jsf.framework.ajax.xmlfilter.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:67)
| at org.ajax4jsf.framework.ajax.xmlfilter.BaseFilter.doFilter(BaseFilter.java:223)
| at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
| at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
| at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
| at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
| at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
| at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
| at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
| at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:175)
| at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74)
| at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
| at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
| at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
| at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
| at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
| at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
| at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
| at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
| at java.lang.Thread.run(Thread.java:595)
|
|
|
Any hint of whats wrong in my code ??
Thnx for your help
Yogesh
M-ITC LTD
http://www.m-itc.net
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