[jboss-user] [JBoss Seam] - Need help with using ValueChangeEvent and SEAM

[paradigmza]

I have a simple application that has a radio box and displays the value of the radio box to the screen. Everything seems to be working except when I browse away from that page and then browse back I get and Exception.

<h:form>
  |                     <h:selectOneRadio 
  |                         value="#{advancedSearch.currentType}" 
  |                         valueChangeListener="#{advancedSearch.typeSelected}"
  |                         immediate="true"
  |                         onclick="submit()"
  |                         >
  |                         <f:selectItems value="#{searchTypeList}" />
  |                     </h:selectOneRadio>
  |                     <h:outputText value="#{advancedSearch.currentType.label}"/>
  |                 </h:form>

and the code is



@Stateless()
  | @Name("advancedSearch")
  | public class AdvancedSearchBean implements AdvancedSearchLocal {
  |     
  |     private SelectItem currentType;
  |     
  |     @Out
  |     private List<SelectItem> searchTypeList;
  |     
  |     @In
  |     private FacesContext facesContext;
  |     
  |     @Factory("searchTypeList")
  |     public void loadList() {
  |         setSearchTypeList(new ArrayList());
  |         getSearchTypeList().add(new SelectItem("1","1"));
  |         getSearchTypeList().add(new SelectItem("2","2"));
  |     }
  |     
  |     public void typeSelected(ValueChangeEvent event) {
  |         String value = (String) event.getNewValue();
  |         if ("1".equals(value)) {
  |             currentType = getSearchTypeList().get(0);
  |         } else if ("2".equals(value)) {
  |             currentType = getSearchTypeList().get(1);
  |         }
  |         //Not sure if this line is needed, it work without it
  |         facesContext.renderResponse();
  |     }
  |     
  |     public SelectItem getCurrentType() {
  |         return currentType;
  |     }
  |     
  |     public void setCurrentType(SelectItem currentType) {
  |         this.currentType = currentType;
  |     }
  |     
  |     public List<SelectItem> getSearchTypeList() {
  |         return searchTypeList;
  |     }
  |     
  |     public void setSearchTypeList(List<SelectItem> searchTypeList) {
  |         this.searchTypeList = searchTypeList;
  |     }
  | }
  | 


the exception is 

  | 08:06:05,616 ERROR [STDERR] Jul 25, 2006 8:06:05 AM com.sun.facelets.FaceletViewHandler handleRenderException
  | SEVERE: Error Rendering View[/search.xhtml]
  | java.lang.IllegalArgumentException: Value is no String and component _id27:_id28with path: {Component-Path : [Class: javax.faces.component.UIViewRoot,ViewId: /search.xhtml][Class: javax.faces.component.html.HtmlForm,Id: _id27][Class: javax.faces.component.html.HtmlSelectOneRadio,Id: _id28]} does not have a Converter
  |         at org.apache.myfaces.shared_impl.renderkit.RendererUtils.getConvertedStringValue(RendererUtils.java:536)
  |         at org.apache.myfaces.shared_impl.renderkit.html.HtmlRadioRendererBase.encodeEnd(HtmlRadioRendererBase.java:93)
  |         at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:536)
  |         at com.sun.facelets.tag.jsf.ComponentSupport.encodeRecursive(ComponentSupport.java:242)
  |         at com.sun.facelets.tag.jsf.ComponentSupport.encodeRecursive(ComponentSupport.java:239)
  |         at com.sun.facelets.tag.jsf.ComponentSupport.encodeRecursive(ComponentSupport.java:239)
  |         at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:580)
  |         at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:384)
  |         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.apache.myfaces.webapp.filter.ExtensionsFilter.doFilter(ExtensionsFilter.java:144)
  |         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)
  | 08:06:05,616 ERROR [[Faces Servlet]] Servlet.service() for servlet Faces Servlet threw exception
  | java.lang.IllegalArgumentException: Value is no String and component _id27:_id28with path: {Component-Path : [Class: javax.faces.component.UIViewRoot,ViewId: /search.xhtml][Class: javax.faces.component.html.HtmlForm,Id: _id27][Class: javax.faces.component.html.HtmlSelectOneRadio,Id: _id28]} does not have a Converter
  |         at org.apache.myfaces.shared_impl.renderkit.RendererUtils.getConvertedStringValue(RendererUtils.java:536)
  |         at org.apache.myfaces.shared_impl.renderkit.html.HtmlRadioRendererBase.encodeEnd(HtmlRadioRendererBase.java:93)
  |         at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:536)
  |         at com.sun.facelets.tag.jsf.ComponentSupport.encodeRecursive(ComponentSupport.java:242)
  |         at com.sun.facelets.tag.jsf.ComponentSupport.encodeRecursive(ComponentSupport.java:239)
  |         at com.sun.facelets.tag.jsf.ComponentSupport.encodeRecursive(ComponentSupport.java:239)
  |         at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:580)
  |         at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:384)
  |         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.apache.myfaces.webapp.filter.ExtensionsFilter.doFilter(ExtensionsFilter.java:144)
  |         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)
  | 08:06:25,276 ERROR [STDERR] Jul 25, 2006 8:06:25 AM com.sun.facelets.FaceletViewHandler handleRenderException
  | 


Any help at all? am I think I am doing something fundementally wrong with the life cycle, buy I am not sure what?

Thanks Sean.

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