Adding Ajax Support dynamically to HtmlInputText causes exception

[gensys]

Hi All,

I am trying to migrate from GlassFish v2.1 to GlassFish v3 and from RichFaces 3.3.2 to RichFaces 3.3.3 and I can feel myself almost there

I am creating dynamically Components (in the example hardcoded HtmlInputText) in a Panel Group Component.

Here is the code that we are using to create component:

FacesContext context = FacesContext.getCurrentInstance();
        Application application = context.getApplication();
        ExpressionFactory factory = application.getExpressionFactory();
        ValueExpression expression = factory.createValueExpression(context.getELContext(),
                                                                   "#{user.value}",
                                                                   String.class);
        UIAjaxSupport supportOnKeyUp = (UIAjaxSupport) application.createComponent(HtmlAjaxSupport.COMPONENT_TYPE);
        supportOnKeyUp.setEvent("onkeyup");
        supportOnKeyUp.setEventsQueue("details");
        supportOnKeyUp.setReRender("greeting");
        UIAjaxSupport supportOnChange = (UIAjaxSupport) application.createComponent(HtmlAjaxSupport.COMPONENT_TYPE);
        supportOnChange.setEvent("onchange");
        supportOnKeyUp.setEventsQueue("details");
        supportOnChange.setReRender("greeting");

        // get the component type and create it dynamically
        UIInput input = (UIInput) application.createComponent("javax.faces.HtmlInputText");
        input.setValueExpression("value", expression);
        input.setId("paramValue");
        input.getChildren().add(supportOnKeyUp);
        input.getChildren().add(supportOnChange);
        
        if (mInputPanelGroup == null)
        {
            mInputPanelGroup = (HtmlPanelGroup) application.createComponent(HtmlPanelGroup.COMPONENT_TYPE);
        }
        mInputPanelGroup.getChildren().clear();
        mInputPanelGroup.getChildren().add(input);

And the panelGroup declaration:

<h:panelGroup id="paramValueInputs" binding="#{user.inputPanelGroup}" 
                layout="block" style="float: left;" />

This code works fine with RichFaces 3.3.2.SR1, but when I migrated to RichFaces 3.3.3 Final I started to have this problem when the above code is executed:

type Exception report

message
description
The server encountered an internal error () that prevented it from fulfilling this request.

exception
javax.servlet.ServletException

root cause
java.lang.NullPointerException

note The full stack traces of the exception and its root causes are available in the GlassFish Server Open Source Edition 3.0.1 logs.

Here are and the stack traces:

[#|2010-09-11T19:38:58.216+0300|SEVERE|glassfish3.0.1|org.ajax4jsf.webapp.BaseXMLFilter|_ThreadID=46;_ThreadName=Thread-1;|Exception in the filter chain
javax.servlet.ServletException
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:325)
    at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1523)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:343)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:215)
    at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:206)
    at org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:290)
    at org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:388)
    at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:515)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:215)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:277)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:188)
    at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:641)
    at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:97)
    at com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:85)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:185)
    at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:325)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:226)
    at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:165)
    at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:791)
    at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:693)
    at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:954)
    at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:170)
    at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:135)
    at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:102)
    at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:88)
    at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:76)
    at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:53)
    at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:57)
    at com.sun.grizzly.ContextTask.run(ContextTask.java:69)
    at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:330)
    at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:309)
    at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.NullPointerException
    at org.ajax4jsf.component.EventValueExpression.quickFindComponent(EventValueExpression.java:66)
    at org.ajax4jsf.component.EventValueExpression.getComponent(EventValueExpression.java:82)
    at org.ajax4jsf.component.AbstractEventValueExpression.getValue(AbstractEventValueExpression.java:98)
    at javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:190)
    at javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:178)
    at javax.faces.component.html.HtmlInputText.getOnkeyup(HtmlInputText.java:407)
    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:597)
    at javax.faces.component.UIComponentBase$AttributesMap.get(UIComponentBase.java:2146)
    at com.sun.faces.renderkit.RenderKitUtils.renderPassThruAttributesUnoptimized(RenderKitUtils.java:693)
    at com.sun.faces.renderkit.RenderKitUtils.renderPassThruAttributes(RenderKitUtils.java:334)
    at com.sun.faces.renderkit.html_basic.TextRenderer.getEndTextToRender(TextRenderer.java:127)
    at com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.encodeEnd(HtmlBasicRenderer.java:170)
    at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:878)
    at com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.encodeRecursive(HtmlBasicRenderer.java:295)
    at com.sun.faces.renderkit.html_basic.GroupRenderer.encodeChildren(GroupRenderer.java:106)
    at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:848)
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1613)
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1616)
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1616)
    at com.sun.faces.application.view.JspViewHandlingStrategy.doRenderView(JspViewHandlingStrategy.java:420)
    at com.sun.faces.application.view.JspViewHandlingStrategy.renderView(JspViewHandlingStrategy.java:209)
    at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:126)
    at org.ajax4jsf.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:100)
    at org.ajax4jsf.application.AjaxViewHandler.renderView(AjaxViewHandler.java:176)
    at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:127)
    at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
    at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139)
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:313)
    ... 32 more
|#]

[#|2010-09-11T19:38:58.219+0300|WARNING|glassfish3.0.1|javax.enterprise.system.container.web.com.sun.enterprise.web|_ThreadID=46;_ThreadName=Thread-1;|StandardWrapperValve[Faces Servlet]: PWC1406: Servlet.service() for servlet Faces Servlet threw exception
java.lang.NullPointerException
    at org.ajax4jsf.component.EventValueExpression.quickFindComponent(EventValueExpression.java:66)
    at org.ajax4jsf.component.EventValueExpression.getComponent(EventValueExpression.java:82)
    at org.ajax4jsf.component.AbstractEventValueExpression.getValue(AbstractEventValueExpression.java:98)
    at javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:190)
    at javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:178)
    at javax.faces.component.html.HtmlInputText.getOnkeyup(HtmlInputText.java:407)
    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:597)
    at javax.faces.component.UIComponentBase$AttributesMap.get(UIComponentBase.java:2146)
    at com.sun.faces.renderkit.RenderKitUtils.renderPassThruAttributesUnoptimized(RenderKitUtils.java:693)
    at com.sun.faces.renderkit.RenderKitUtils.renderPassThruAttributes(RenderKitUtils.java:334)
    at com.sun.faces.renderkit.html_basic.TextRenderer.getEndTextToRender(TextRenderer.java:127)
    at com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.encodeEnd(HtmlBasicRenderer.java:170)
    at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:878)
    at com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.encodeRecursive(HtmlBasicRenderer.java:295)
    at com.sun.faces.renderkit.html_basic.GroupRenderer.encodeChildren(GroupRenderer.java:106)
    at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:848)
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1613)
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1616)
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1616)
    at com.sun.faces.application.view.JspViewHandlingStrategy.doRenderView(JspViewHandlingStrategy.java:420)
    at com.sun.faces.application.view.JspViewHandlingStrategy.renderView(JspViewHandlingStrategy.java:209)
    at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:126)
    at org.ajax4jsf.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:100)
    at org.ajax4jsf.application.AjaxViewHandler.renderView(AjaxViewHandler.java:176)
    at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:127)
    at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
    at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139)
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:313)
    at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1523)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:343)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:215)
    at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:206)
    at org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:290)
    at org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:388)
    at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:515)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:215)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:277)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:188)
    at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:641)
    at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:97)
    at com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:85)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:185)
    at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:325)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:226)
    at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:165)
    at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:791)
    at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:693)
    at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:954)
    at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:170)
    at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:135)
    at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:102)
    at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:88)
    at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:76)
    at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:53)
    at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:57)
    at com.sun.grizzly.ContextTask.run(ContextTask.java:69)
    at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:330)
    at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:309)
    at java.lang.Thread.run(Thread.java:619)

If I remove these 2 lines from the code (the above code snippet):

input.getChildren().add(supportOnKeyUp);
input.getChildren().add(supportOnChange);

the HtmlInputText renders Ok and this exception is missing, but the Ajax Support is missing (normaly).

Do you have any idea where the problem can be?

Thanks in advance,

RoGGeR.

[gensys]

Hi All,

Any idea about that one?

Thanks in Advance,

RoGGeR.

[harut]

http://community.jboss.org/message/540674#540674

[gensys]

Hi Harut,

Thanks a lot for your reply !!!

I tried this code:

FacesContext context = FacesContext.getCurrentInstance();
        Application application = context.getApplication();
        ExpressionFactory factory = application.getExpressionFactory();
        ValueExpression expression = factory.createValueExpression(context.getELContext(),
                                                                   "#{user.value}",
                                                                   String.class);
        UIAjaxSupport supportOnKeyUp = (UIAjaxSupport) application.createComponent(HtmlAjaxSupport.COMPONENT_TYPE);
        supportOnKeyUp.setEvent("onkeyup");
        supportOnKeyUp.setEventsQueue("details");
        supportOnKeyUp.setReRender("greeting");
        UIAjaxSupport supportOnChange = (UIAjaxSupport) application.createComponent(HtmlAjaxSupport.COMPONENT_TYPE);
        supportOnChange.setEvent("onchange");
        supportOnKeyUp.setEventsQueue("details");
        supportOnChange.setReRender("greeting");

    HtmlAjaxSupport mySupport = new HtmlAjaxSupport();
    mySupport.setEvent("onclick");
    mySupport.setReRender(AjaxRendererUtils.asSet("details"));
    mySupport.setAjaxSingle(false);
 
        // get the component type and create it dynamically
        UIInput input = (UIInput) application.createComponent("javax.faces.HtmlInputText");
        input.setValueExpression("value", expression);
        input.setId("paramValue");
    input.getFacets().put("a4jsupport", mySupport);
        //input.getChildren().add(supportOnKeyUp);
        //input.getChildren().add(supportOnChange);
        
        if (mInputPanelGroup == null)

But it fails again for me ... with the same exception ...

Do you have any other idea what could be the problem?

Thanks again in advance!

RoGGeR.

[harut]

Hi Rogger,

Have you tried to create text component like this: input = new HtmlInputText(); ??(javax.faces.component.html.HtmlInputText)

[gensys]

Hi Harut,

Thanks again for spending time on my issue!

I made the relevant changes and I got the same exception.

I am attaching the JSF page and the Backing Bean along with the list of the libraries that I am referencing in my project.

index.jsp

<%@ taglib uri="http://java.sun.com/jsf/html" prefix="h"%>
<!-- RichFaces tag library declaration -->
<%@ taglib uri="http://richfaces.org/a4j" prefix="a4j"%>
<%@ taglib uri="http://richfaces.org/rich" prefix="rich"%>

<html>
<head>
<title>RichFaces Greeter</title>
</head>
<body>
<f:view>
    <a4j:form>
        <rich:panel header="RichFaces Greeter" style="width: 315px">
            <h:outputText value="Your name: " />
            <h:inputText id="input" value="#{user.name}">
                <f:validateLength minimum="1" maximum="30" />
            </h:inputText>

            <a4j:commandButton value="Get greeting" action="#{user.ProcessAction}" reRender="greeting, input" />

            <h:panelGroup id="greeting">
                <h:outputText value="Hello, " rendered="#{not empty user.name}" />
                <h:outputText value="#{user.name}" />
                <h:outputText value="!" rendered="#{not empty user.name}" />
            </h:panelGroup>
        </rich:panel>
        <h:panelGroup id="paramValueInputs" binding="#{user.inputPanelGroup}" 
                layout="block" style="float: left;" />
    </a4j:form>
</f:view>
</body>
</html>

user.java

package demo;

import javax.el.ExpressionFactory;
import javax.el.ValueExpression;
import javax.faces.application.Application;
import javax.faces.component.UIInput;
import javax.faces.component.html.HtmlInputText;
import javax.faces.component.html.HtmlPanelGroup;
import javax.faces.context.FacesContext;

import org.ajax4jsf.component.UIAjaxSupport;
import org.ajax4jsf.component.html.HtmlAjaxSupport;
import org.ajax4jsf.renderkit.AjaxRendererUtils;
public class user
{

    private String name = "";
    private TreeState treeState;
    private HtmlPanelGroup mInputPanelGroup;

    public String getName()
    {
        return name;
    }

    public void setName(String name)
    {
        this.name = name;
    }
    
    public void ProcessAction()
    {
        name = name + "1"; 
    }

    public void setInputPanelGroup(HtmlPanelGroup aInputPanelGroup)
    {
        this.mInputPanelGroup = aInputPanelGroup;
    }

    public HtmlPanelGroup getInputPanelGroup()
    {
        createInputComponent();
        return mInputPanelGroup;
    }
    
    public void createInputComponent()
    {
        FacesContext context = FacesContext.getCurrentInstance();
        Application application = context.getApplication();
        ExpressionFactory factory = application.getExpressionFactory();
        ValueExpression expression = factory.createValueExpression(context.getELContext(),
                                                                   "#{user.value}",
                                                                   String.class);
        /*UIAjaxSupport supportOnKeyUp = (UIAjaxSupport) application.createComponent(HtmlAjaxSupport.COMPONENT_TYPE);
        supportOnKeyUp.setEvent("onkeyup");
        supportOnKeyUp.setEventsQueue("details");
        supportOnKeyUp.setReRender("greeting");
        UIAjaxSupport supportOnChange = (UIAjaxSupport) application.createComponent(HtmlAjaxSupport.COMPONENT_TYPE);
        supportOnChange.setEvent("onchange");
        supportOnKeyUp.setEventsQueue("details");
        supportOnChange.setReRender("greeting");*/ // Old approach - works on GlassFish v2.1 and v2.1.1
        
        HtmlAjaxSupport mySupport = new HtmlAjaxSupport();
        mySupport.setEvent("onclick");
        mySupport.setReRender(AjaxRendererUtils.asSet("details"));
        mySupport.setAjaxSingle(false);
        
        // get the component type and create it dynamically
        //UIInput input = (UIInput) application.createComponent("javax.faces.HtmlInputText"); // Old approach - works on GlassFish v2.1 and v2.1.1
        HtmlInputText input = new HtmlInputText();
        input.setValueExpression("value", expression);
        input.setId("paramValue");
        input.getFacets().put("a4jsupport", mySupport);
        //input.getChildren().add(supportOnKeyUp); // Old approach - works on GlassFish v2.1 and v2.1.1
        //input.getChildren().add(supportOnChange); // Old approach - works on GlassFish v2.1 and v2.1.1
        
        if (mInputPanelGroup == null)
        {
            mInputPanelGroup = (HtmlPanelGroup) application.createComponent(HtmlPanelGroup.COMPONENT_TYPE);
        }
        mInputPanelGroup.getChildren().clear();
        mInputPanelGroup.getChildren().add(input);
    }
    
    public String getValue()
    {
        return "asd";
    }
    
    public void setValue(String aValue)
    {
        //
    }
}

List of the Libraries that I am referencing in my project:

commons-beanutils.jar
commons-collections-3.2.1.jar
commons-digester-2.0.jar
commons-logging-1.1.1.jar
jhighlight-1.0.jar
richfaces-api-3.3.3.Final.jar
richfaces-impl-jsf2-3.3.3.Final.jar
richfaces-ui-3.3.3.Final.jar

The environment is GlassFish v3.0.1.

Do you have any idea what I am doing wrong?

Thanks in advance!

RoGGeR.

[gensys]

Hi All,

Any other ideas about this one?

Thanks in advance,

RoGGeR.