Horrendous EL problem

[Julien Martin]

Hello,

I have the following problem with Richfaces + Facelets:

 java.lang.NullPointerException
        at javax.el.BeanELResolver$BeanProperty.read(BeanELResolver.java:259)
        at javax.el.BeanELResolver$BeanProperty.access$000(BeanELResolver.java:209)
        at javax.el.BeanELResolver.getValue(BeanELResolver.java:60)
        at javax.el.CompositeELResolver.getValue(CompositeELResolver.java:53)
        at com.sun.faces.el.FacesCompositeELResolver.getValue(FacesCompositeELResolver.java:72)
        at org.apache.el.parser.AstValue.getValue(AstValue.java:118)
        at org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:186)
        at com.sun.facelets.el.TagValueExpression.getValue(TagValueExpression.java:71)
        at javax.faces.component.UIOutput.getValue(UIOutput.java:184)
        at com.sun.faces.renderkit.html_basic.HtmlBasicInputRenderer.getValue(HtmlBasicInputRenderer.java:201)
        at com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.getCurrentValue(HtmlBasicRenderer.java:284)
        at com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.encodeEnd(HtmlBasicRenderer.java:154)
        at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:861)
        at org.ajax4jsf.renderkit.RendererBase.renderChild(RendererBase.java:286)
        at org.ajax4jsf.renderkit.RendererBase.renderChildren(RendererBase.java:262)
        at org.ajax4jsf.renderkit.html.AjaxOutputPanelRenderer.encodeChildren(AjaxOutputPanelRenderer.java:79)
        at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:837)
        at javax.faces.component.UIComponent.encodeAll(UIComponent.java:936)
        at javax.faces.component.UIComponent.encodeAll(UIComponent.java:942)
        at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:592)
        at org.restfaces.application.RestViewHandler.renderView(RestViewHandler.java:148)
        at org.ajax4jsf.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:108)
        at org.ajax4jsf.application.AjaxViewHandler.renderView(AjaxViewHandler.java:189)
        at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:109)
        at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100)
        at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139)
        at javax.faces.webapp.FacesServlet.service(FacesServlet.java:266)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:154)
        at org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:260)
        at org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:366)
        at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:493)
        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.ApplicationDispatcher.invoke(ApplicationDispatcher.java:630)
        at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:436)
        at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:374)
        at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:302)
        at org.restfaces.Filter.doFilter(Filter.java:210)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter.doFilterInternal(OpenEntityManagerInViewFilter.java:112)
        at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
        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:233)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
        at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:525)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845)
        at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
        at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
        at java.lang.Thread.run(Thread.java:619)
   

Can anyone help?

Thanks in advance,

Julien.
[ August 25, 2008: Message edited by: Bear Bibeault ]

[Julien Martin]

What does this message mean? That there are no EL implementation available? This can't be the case since other pages display ok.
Does anyone have any clue?
Julien.

[Bauke Scholtz]

Look like a bug in the EL implementation. Can you please mention which EL implementation you're using and also which application server exactly you're using? Can you also show the JSF code line with the EL which caused this exception?

[Julien Martin]

Hello,
I'll send you my POM as soon as I get back home tonight.
I use tomcat + richfaces + facelets + spring + restfaces.
I managed to pinpoint the problem: I had to getSculpture overloaded methods: one with a return type of String, one with a return type of Sculpture.
Regards,
Julien.

[Julien Martin]

Here is the POM:

  <?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 <a href="http://maven.apache.org/maven-v4_0_0.xsd">" target="_blank" rel="nofollow">http://maven.apache.org/maven-v4_0_0.xsd"></a>
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.jeanbaptistemartin</groupId>
    <artifactId>jeanbaptistemartin</artifactId>
    <packaging>war</packaging>
    <version>1.0-SNAPSHOT</version>
    <name>jeanbaptistemartin</name>
    <url>http://maven.apache.org</url>
    <dependencies>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.4</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.restfaces</groupId>
            <artifactId>restfaces</artifactId>
            <version>1.3.0.2</version>
            <scope>compile</scope>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate</artifactId>
            <version>3.2.6.ga</version>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-annotations</artifactId>
            <version>3.3.1.GA</version>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-entitymanager</artifactId>
            <version>3.3.2.GA</version>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-commons-annotations</artifactId>
            <version>3.3.0.ga</version>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-validator</artifactId>
            <version>3.0.0.ga</version>
        </dependency>
        <dependency>
            <groupId>opensymphony</groupId>
            <artifactId>oscache</artifactId>
            <version>2.4</version>
            <scope>compile</scope>
        </dependency>
        <dependency>
            <groupId>concurrent</groupId>
            <artifactId>concurrent</artifactId>
            <version>1.3.4</version>
        </dependency>
        <dependency>
            <groupId>javax.persistence</groupId>
            <artifactId>persistence-api</artifactId>
            <version>1.0</version>
        </dependency>
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.14</version>
        </dependency>
        <dependency>
            <groupId>javax.faces</groupId>
            <artifactId>jsf-api</artifactId>
            <version>1.2_09</version>
        </dependency>
        <dependency>
            <groupId>javax.faces</groupId>
            <artifactId>jsf-impl</artifactId>
            <version>1.2_09</version>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>servlet-api</artifactId>
            <version>2.5</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>org.richfaces.ui</groupId>
            <artifactId>richfaces-ui</artifactId>
            <version>3.2.1.GA</version>
            <exclusions>
                <exclusion>
                    <artifactId>jsf-api</artifactId>
                    <groupId>javax.faces</groupId>
                </exclusion>
                <exclusion>
                    <artifactId>jsf-impl</artifactId>
                    <groupId>javax.faces</groupId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>org.richfaces.framework</groupId>
            <artifactId>richfaces-api</artifactId>
            <version>3.2.1.GA</version>
        </dependency>
        <dependency>
            <groupId>org.richfaces.framework</groupId>
            <artifactId>richfaces-impl</artifactId>
            <version>3.2.1.GA</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring</artifactId>
            <version>2.5.5</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.6</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.javaconfig</groupId>
            <artifactId>spring-javaconfig</artifactId>
            <version>1.0.0.m3</version>
            <exclusions>
                <exclusion>
                    <artifactId>spring-beans</artifactId>
                    <groupId>org.springframework</groupId>
                </exclusion>
                <exclusion>
                    <artifactId>spring-context</artifactId>
                    <groupId>org.springframework</groupId>
                </exclusion>
                <exclusion>
                    <artifactId>spring-core</artifactId>
                    <groupId>org.springframework</groupId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>spring</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>1.0.2</version>
            <scope>compile</scope>
        </dependency>
        <dependency>
            <groupId>javax.mail</groupId>
            <artifactId>mail</artifactId>
            <version>1.4</version>
            <scope>compile</scope>
        </dependency>
       
        <!--
        <dependency>
            <groupId>org.springmodules</groupId>
            <artifactId>spring-modules-cache</artifactId>
            <version>0.8a</version>
            <scope>compile</scope>
            <exclusions>
                <exclusion>
                    <groupId>gigaspaces</groupId>
                    <artifactId>gigaspaces-ce</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>jini</groupId>
                    <artifactId>webster</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>jboss</groupId>
                    <artifactId>jboss-jmx</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>jini</groupId>
                    <artifactId>jsk-lib</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>jini</groupId>
                    <artifactId>jsk-platform</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>jini</groupId>
                    <artifactId>mahalo</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>jini</groupId>
                    <artifactId>reggie</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>jini</groupId>
                    <artifactId>start</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>jini</groupId>
                    <artifactId>boot</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>jboss</groupId>
                    <artifactId>jboss-common</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>jboss</groupId>
                    <artifactId>jboss-minimal</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>jboss</groupId>
                    <artifactId>jboss-system</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>jcs</groupId>
                    <artifactId>jcs</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>xpp3</groupId>
                    <artifactId>xpp3_min</artifactId>
                </exclusion>
                <exclusion>
                    <artifactId>jboss-cache</artifactId>
                    <groupId>jboss</groupId>
                </exclusion>
                <exclusion>
                    <artifactId>jgroups-all</artifactId>
                    <groupId>jgroups</groupId>
                </exclusion>
            </exclusions>
        </dependency>
        -->
        <dependency>
            <groupId>com.octo.captcha</groupId>
            <artifactId>jcaptcha-all</artifactId>
            <version>1.0-RC6</version>
        </dependency>
        <dependency>
            <groupId>com.sun.facelets</groupId>
            <artifactId>jsf-facelets</artifactId>
            <version>1.1.14</version>
            <scope>compile</scope>
        </dependency>
        <dependency>
            <groupId>xerces</groupId>
            <artifactId>xerces</artifactId>
            <version>2.4.0</version>
            <scope>compile</scope>
        </dependency>
        <dependency>
            <groupId>xerces</groupId>
            <artifactId>xercesImpl</artifactId>
            <version>2.6.2</version>
            <scope>compile</scope>
        </dependency>
        <dependency>
            <groupId>xerces</groupId>
            <artifactId>xmlParserAPIs</artifactId>
            <version>2.6.2</version>
            <scope>compile</scope>
        </dependency>
        <dependency>
            <groupId>commons-collections</groupId>
            <artifactId>commons-collections</artifactId>
            <version>3.2.1</version>
            <scope>compile</scope>
        </dependency>
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>2.0.2</version>
                <configuration>
                    <source>1.6</source>
                    <target>1.6</target>
                </configuration>
            </plugin>
        </plugins>
        <finalName>jeanbaptistemartin</finalName>
    </build>
    <properties>
        <netbeans.hint.deploy.server>Tomcat60</netbeans.hint.deploy.server>
    </properties>
</project>  

Please let me know if you need me to provide further information.

Julien.

[ UD: added linebreak to preserve layout ]
[ August 25, 2008: Message edited by: Ulf Dittmer ]

[Bassam Al-Sarori]

Make sure that your bean is not null and you have a set and get method for the property you are trying to access.

[Julien Martin]

Thanks,
Sorted. I had two getSculpture methods one with a return type of Sculpture one with a return type of String.
Julien.

[Bauke Scholtz]

Crossposted: http://forums.sun.com/thread.jspa?threadID=5323668

[Julien Martin]

Bauke Scholtz,
The netiquette does not prevent you from cross-posting on different websites. It is sometime useful to get different answers from different people, as you can see from here: http://www.coderanch.com/t/234320/threads/java/concurrency-safe-publication
Julien.

[Ulf Dittmer]

The netiquette does not prevent you from cross-posting on different websites.

We like for people to BeForthrightWhenCrossPostingToOtherSites, though.

[Bauke Scholtz]

Indeed, that's why I helped to mention about it. Just to prevent that others will waste time to give answers which are already given. Wasting other's time is almost the rudest what you can do in terms of netiquette.

[Julien Martin]

I didn't intend to waste anyone's time.

As I said it it interesting to have different people's opinion or advice hence the similar posts.

However spending one's time looking for cross posts is indeed a good way of wasting one's own time and you would be better advised to reply to posts with constructive advice and solutions.

Julien.

[Ulf Dittmer]

Julien,

looking for crossposts is not the same as noticing them, and making fun of people who point out where the guidelines we came up with for this site -which can be found at HowToAskQuestionsOnJavaRanch- weren't followed is not a nice thing to do.

The most fundamental rule at JavaRanch is "Be Nice." Please act accordingly.

[Paul Clapham]

Julien, let me also point out that you routinely cross-post your questions here and on the Sun forums. Because of that, my personal policy is to never answer any of your questions in either place.

[Julien Martin]

From now on, I will only post on the Sun forum although I must admit that the help from Javaranch has more than often been very useful to me. Let this post be the last of this thread lest this forum turn into a forum about netiquette instead of a forum about Java development.
Julien.

[Bauke Scholtz]

The general netiquette rules are also applicable on the Sun forum though. Everywhere, in fact. Here at JavaRanch the extended rules and moderation are indeed somewhat stricter. But it brings the quality of the dicsussions at a higher level. Anyway, we'll cross over there at Sun.com sooner or later.
[ August 25, 2008: Message edited by: Bauke Scholtz ]