4 Replies Latest reply on Nov 16, 2010 1:50 PM by ndrw_cheung

picklist problem with complex data types

ndrw_cheung Nov 5, 2010 4:38 PM

Hi, all. I am using a picklist to display a list of available items. I cannot get complex type working. Current configurations: RichFaces 3.3.3Final, JSF1.2, GateIn Portal 3.0. Source code in various files are as follows. Any help is much appreciated.

-Andrew

------------------------------

regionresults.xhtml:

<rich:pickList id="plRegions" showButtonsLabel="false" copyAllVisible="false" removeAllVisible="false" value="#{brokeradmin.selectedRegions}" converter="ribcvtr">
            <f:selectItems value="#{brokeradmin.regionResults}"/>
        </rich:pickList>
        <a4j:commandButton id="btnGetSelectedRegions"    action="#{brokeradmin.retrieveSelectedRegions}" value="Show Selected Regions" >
        </a4j:commandButton>
           <h:outputText id="txtShowRegionsSelected" value="#{brokeradmin.abc}"/>

----------------------------

BrokerAdmin.java (this is the backing bean):

private ArrayList<SelectItem> regionResults = null;
private List<RegionItemBean> selectedRegions = null;

private String abc = "";

public String getAbc() {
return abc;
}
public void setAbc(String abc) {
this.abc = abc;
}

public List<RegionItemBean> getSelectedRegions() {
        return selectedRegions;
    }
    public void setSelectedRegions(List<RegionItemBean> selectedRegions) {
        this.selectedRegions = selectedRegions;
    }
    public ArrayList<SelectItem> getRegionResults() {
        return regionResults;
    }

    public void setRegionResults(ArrayList<SelectItem> regionResults) {
        this.regionResults = regionResults;
    }

public BrokerAdmin() throws java.lang.Exception {

     //selectedRegions population
         if (getSelectedRegions() == null) {
             selectedRegions = new ArrayList<RegionItemBean>();
             RegionItemBean rib = new RegionItemBean();
             rib.setLabel("existing region");
             rib.setValue("111");
             selectedRegions.add(rib);
             rib = null;

        }
         //need to add the selected regions to the selectedItems list (the system will do a compare and display it on the right hand side)
         RegionItemBean rib2 = new RegionItemBean();
         rib2.setLabel("existing region");
         rib2.setValue("111");
         regionResults.add(new SelectItem(rib2, "existing region"));

}

public String retrieveSelectedRegions() {

for (int i=0; i<selectedRegions.size(); i++) {

//I tried the following code that is commented out, but it will give me the same error in the error log (i.e. java.lang.String cannot be cast to demo.RegionItemBean)
    //        RegionItemBean tmpribsr = selectedRegions.get(i);
    //        String l = tmpribsr.getLabel();
    //        String v = tmpribsr.getValue();
    //        myLogger.error("DEBUGXXX : selected regions tmpstr label = " + tmpribsr.getLabel() + "; value=" + tmpribsr.getValue());

    //    myLogger.error("DEBUGXXX : in retrieveSelectedRegions, selectedRegions label = " + selectedRegions.get(i).getLabel() + "; value = " + //selectedRegions.get(i).getValue() );

}

-----------------------------------

RegionItemBean.java:

package demo;

import org.apache.commons.lang.builder.EqualsBuilder;

public class RegionItemBean {

    private String label;
    private String value;

    public RegionItemBean(String newlabel, String newvalue){
        label = newlabel;
        value = newvalue;
    }
    public RegionItemBean(){
        label = "";
        value = "";
    }

    public String getLabel() {
        return label;
    }
    public void setLabel(String label) {
        this.label = label;
    }
    public String getValue() {
        return value;
    }
    public void setValue(String value) {
        this.value = value;
    }

    public boolean equals(Object obj) {

        if (obj == null)
            return false;
        if (obj == this)
            return true;
        if (obj.getClass() != getClass())
            return false;

        RegionItemBean rib = (RegionItemBean) obj;
        return new EqualsBuilder().
            // if deriving: appendSuper(super.equals(obj)).
            append(label, rib.label).
            append(value, rib.value).
            isEquals();

}

---------------------------

RegionItemBeanConverter.java (this is the converter. The error in the error log comes from the type casting statement in getAsString ):

package demo;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.convert.Converter;

import org.apache.log4j.Logger;

public class RegionItemBeanConverter implements Converter {

    @Override
    public Object getAsObject(FacesContext arg0, UIComponent arg1, String arg2) {
        // TODO Auto-generated method stub
        int index = arg2.indexOf(':');

        return new RegionItemBean(arg2.substring(0, index), arg2.substring(index + 1));

}

    @Override
    public String getAsString(FacesContext arg0, UIComponent arg1, Object arg2) {
        // TODO Auto-generated method stub
        RegionItemBean rib = (RegionItemBean) arg2;
        return rib.getLabel() + ":" + rib.getValue();
    }

}

faces-config.xml:

<managed-bean>
<description>Demo Broker Admin</description>
<managed-bean-name>brokeradmin</managed-bean-name>
<managed-bean-class>demo.BrokerAdmin</managed-bean-class>
<managed-bean-scope>session</managed-bean-scope>
</managed-bean>
<managed-bean>
<description>Demo Region Item Bean</description>
<managed-bean-name>regionitembean</managed-bean-name>
<managed-bean-class>demo.RegionItemBean</managed-bean-class>
<managed-bean-scope>session</managed-bean-scope>
</managed-bean>
<converter>
   <converter-id>ribcvtr</converter-id>
   <converter-class>demo.RegionItemBeanConverter</converter-class>
</converter>

------------------------

The error that I got in the server.log:

2010-11-05 15:49:28,918 SEVERE [facelets.viewhandler] (http-127.0.0.1-8080-3) Error Rendering View[/pages/regionresults.xhtml]

java.lang.ClassCastException: java.lang.String cannot be cast to demo.RegionItemBean

at demo.RegionItemBeanConverter.getAsString(Unknown Source)

at org.richfaces.renderkit.ConvertedSelectItem.get(ConvertedSelectItem.java:49)

at org.richfaces.renderkit.PickListRenderer.getConvertedItems(PickListRenderer.java:523)

at org.richfaces.renderkit.html.PickListRendererGen.doEncodeChildren(PickListRendererGen.java:283)

at org.richfaces.renderkit.html.PickListRendererGen.doEncodeChildren(PickListRendererGen.java:264)

at org.ajax4jsf.renderkit.RendererBase.encodeChildren(RendererBase.java:120)

at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:837)

at javax.faces.component.UIComponent.encodeAll(UIComponent.java:930)

at javax.faces.component.UIComponent.encodeAll(UIComponent.java:933)

at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:592)

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:110)

at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100)

at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139)

at org.jboss.portletbridge.AjaxPortletBridge.render(AjaxPortletBridge.java:1100)

at org.jboss.portletbridge.AjaxPortletBridge.doFacesRequest(AjaxPortletBridge.java:651)

at javax.portlet.faces.GenericFacesPortlet.doFacesDispatch(GenericFacesPortlet.java:598)

at javax.portlet.faces.GenericFacesPortlet.doView(GenericFacesPortlet.java:486)

at javax.portlet.GenericPortlet.doDispatch(GenericPortlet.java:354)

at javax.portlet.faces.GenericFacesPortlet.doDispatch(GenericFacesPortlet.java:457)

at javax.portlet.GenericPortlet.render(GenericPortlet.java:259)

at org.gatein.pc.portlet.impl.jsr168.PortletContainerImpl$Invoker.doFilter(PortletContainerImpl.java:569)

at org.gatein.pc.portlet.impl.jsr168.api.FilterChainImpl.doFilter(FilterChainImpl.java:159)

at org.gatein.pc.portlet.impl.jsr168.api.FilterChainImpl.doFilter(FilterChainImpl.java:80)

at org.gatein.pc.portlet.impl.jsr168.PortletContainerImpl.dispatch(PortletContainerImpl.java:506)

at org.gatein.pc.portlet.container.ContainerPortletDispatcher.invoke(ContainerPortletDispatcher.java:42)

at org.gatein.pc.portlet.PortletInvokerInterceptor.invoke(PortletInvokerInterceptor.java:87)

at org.gatein.pc.portlet.aspects.EventPayloadInterceptor.invoke(EventPayloadInterceptor.java:197)

at org.gatein.pc.portlet.PortletInvokerInterceptor.invoke(PortletInvokerInterceptor.java:87)

at org.gatein.pc.portlet.aspects.RequestAttributeConversationInterceptor.invoke(RequestAttributeConversationInterceptor.java:119)

at org.gatein.pc.portlet.PortletInvokerInterceptor.invoke(PortletInvokerInterceptor.java:87)

at org.gatein.pc.portlet.aspects.CCPPInterceptor.invoke(CCPPInterceptor.java:65)

at org.gatein.pc.portlet.PortletInvokerInterceptor.invoke(PortletInvokerInterceptor.java:87)

at org.gatein.pc.bridge.BridgeInterceptor.invoke(BridgeInterceptor.java:49)

at org.gatein.pc.portlet.PortletInvokerInterceptor.invoke(PortletInvokerInterceptor.java:87)

at org.gatein.pc.portlet.aspects.ContextDispatcherInterceptor.access$001(ContextDispatcherInterceptor.java:49)

at org.gatein.pc.portlet.aspects.ContextDispatcherInterceptor$1.doCallback(ContextDispatcherInterceptor.java:123)

at org.gatein.wci.command.CommandDispatcher$CallbackCommand.execute(CommandDispatcher.java:82)

at sun.reflect.GeneratedMethodAccessor492.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.lang.reflect.Method.invoke(Unknown Source)

at org.gatein.wci.command.CommandServlet.doGet(CommandServlet.java:135)

at org.gatein.wci.command.CommandServlet.doPost(CommandServlet.java:166)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:638)

at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:543)

at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:480)

at org.gatein.wci.command.CommandServlet.include(CommandServlet.java:84)

at org.gatein.wci.command.CommandDispatcher.include(CommandDispatcher.java:58)

at org.gatein.wci.tomcat.TC6ServletContainerContext.include(TC6ServletContainerContext.java:87)

at org.gatein.wci.impl.DefaultServletContainer.include(DefaultServletContainer.java:198)

at org.gatein.pc.portlet.impl.spi.AbstractServerContext.dispatch(AbstractServerContext.java:69)

at org.gatein.pc.portlet.aspects.ContextDispatcherInterceptor.invoke(ContextDispatcherInterceptor.java:77)

at org.gatein.pc.portlet.PortletInvokerInterceptor.invoke(PortletInvokerInterceptor.java:87)

at org.gatein.pc.portlet.aspects.SecureTransportInterceptor.invoke(SecureTransportInterceptor.java:69)

at org.gatein.pc.portlet.PortletInvokerInterceptor.invoke(PortletInvokerInterceptor.java:87)

at org.gatein.pc.portlet.aspects.ValveInterceptor.invoke(ValveInterceptor.java:75)

at org.gatein.pc.portlet.PortletInvokerInterceptor.invoke(PortletInvokerInterceptor.java:87)

at org.gatein.pc.portlet.container.ContainerPortletInvoker.invoke(ContainerPortletInvoker.java:117)

at org.gatein.pc.portlet.PortletInvokerInterceptor.invoke(PortletInvokerInterceptor.java:87)

at org.gatein.pc.portlet.state.producer.ProducerPortletInvoker.invoke(ProducerPortletInvoker.java:231)

at org.gatein.pc.portlet.PortletInvokerInterceptor.invoke(PortletInvokerInterceptor.java:87)

at org.gatein.pc.portlet.aspects.PortletCustomizationInterceptor.invoke(PortletCustomizationInterceptor.java:76)

at org.gatein.pc.portlet.PortletInvokerInterceptor.invoke(PortletInvokerInterceptor.java:87)

at org.gatein.pc.portlet.aspects.ConsumerCacheInterceptor.invoke(ConsumerCacheInterceptor.java:162)

at org.gatein.pc.portlet.PortletInvokerInterceptor.invoke(PortletInvokerInterceptor.java:87)

at org.gatein.pc.federation.impl.FederatedPortletInvokerService.invoke(FederatedPortletInvokerService.java:152)

at org.gatein.pc.federation.impl.FederatingPortletInvokerService.invoke(FederatingPortletInvokerService.java:177)

at org.exoplatform.portal.webui.application.UIPortlet.invoke(UIPortlet.java:903)

at org.exoplatform.portal.webui.application.UIPortletLifecycle.processRender(UIPortletLifecycle.java:201)

at org.exoplatform.portal.webui.application.UIPortletLifecycle.processRender(UIPortletLifecycle.java:61)

at org.exoplatform.webui.core.UIComponent.processRender(UIComponent.java:148)

at org.exoplatform.webui.core.UIContainer.renderChildren(UIContainer.java:368)

at org.exoplatform.webui.core.UIContainer.renderChildren(UIContainer.java:358)

at sun.reflect.GeneratedMethodAccessor498.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.lang.reflect.Method.invoke(Unknown Source)

at org.codehaus.groovy.runtime.callsite.PojoMetaMethodSite$PojoCachedMethodSiteNoUnwrapNoCoerce.invoke(PojoMetaMethodSite.java:229)

at org.codehaus.groovy.runtime.callsite.PojoMetaMethodSite.call(PojoMetaMethodSite.java:52)

at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:121)

at UIPage.run(UIPage.gtmpl:8)

at org.exoplatform.groovyscript.GroovyScript.render(GroovyScript.java:95)

at org.exoplatform.groovyscript.GroovyTemplate.render(GroovyTemplate.java:112)

at org.exoplatform.groovyscript.text.TemplateService.merge(TemplateService.java:117)

at org.exoplatform.webui.core.lifecycle.Lifecycle.renderTemplate(Lifecycle.java:132)

at org.exoplatform.webui.core.lifecycle.Lifecycle.processRender(Lifecycle.java:85)

at org.exoplatform.portal.webui.page.UIPageLifecycle.processRender(UIPageLifecycle.java:44)

at org.exoplatform.webui.core.UIComponent.processRender(UIComponent.java:148)

at org.exoplatform.webui.core.UIComponentDecorator.renderChildren(UIComponentDecorator.java:93)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.lang.reflect.Method.invoke(Unknown Source)

at org.codehaus.groovy.runtime.callsite.PojoMetaMethodSite$PojoCachedMethodSiteNoUnwrapNoCoerce.invoke(PojoMetaMethodSite.java:229)

at org.codehaus.groovy.runtime.callsite.PojoMetaMethodSite.call(PojoMetaMethodSite.java:52)

at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:121)

at UIPageBody.run(UIPageBody.gtmpl:31)

at org.exoplatform.groovyscript.GroovyScript.render(GroovyScript.java:95)

at org.exoplatform.groovyscript.GroovyTemplate.render(GroovyTemplate.java:112)

at org.exoplatform.groovyscript.text.TemplateService.merge(TemplateService.java:117)

at org.exoplatform.webui.core.lifecycle.Lifecycle.renderTemplate(Lifecycle.java:132)

at org.exoplatform.webui.core.lifecycle.Lifecycle.processRender(Lifecycle.java:85)

at org.exoplatform.webui.core.UIComponent.processRender(UIComponent.java:148)

at org.exoplatform.portal.webui.page.UIPageBody.processRender(UIPageBody.java:171)

at org.exoplatform.webui.core.UIContainer.renderChildren(UIContainer.java:368)

at org.exoplatform.webui.core.UIContainer.renderChildren(UIContainer.java:358)

at sun.reflect.GeneratedMethodAccessor498.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.lang.reflect.Method.invoke(Unknown Source)

at org.codehaus.groovy.runtime.callsite.PojoMetaMethodSite$PojoCachedMethodSiteNoUnwrapNoCoerce.invoke(PojoMetaMethodSite.java:229)

at org.codehaus.groovy.runtime.callsite.PojoMetaMethodSite.call(PojoMetaMethodSite.java:52)

at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:121)

at UIPortal.run(UIPortal.gtmpl:18)

at org.exoplatform.groovyscript.GroovyScript.render(GroovyScript.java:95)

at org.exoplatform.groovyscript.GroovyTemplate.render(GroovyTemplate.java:112)

at org.exoplatform.groovyscript.text.TemplateService.merge(TemplateService.java:117)

at org.exoplatform.webui.core.lifecycle.Lifecycle.renderTemplate(Lifecycle.java:132)

at org.exoplatform.webui.core.lifecycle.Lifecycle.processRender(Lifecycle.java:85)

at org.exoplatform.portal.webui.portal.UIPortalLifecycle.processRender(UIPortalLifecycle.java:41)

at org.exoplatform.portal.webui.portal.UIPortalLifecycle.processRender(UIPortalLifecycle.java:30)

at org.exoplatform.webui.core.UIComponent.processRender(UIComponent.java:148)

at org.exoplatform.webui.core.UIComponentDecorator.renderChildren(UIComponentDecorator.java:93)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.lang.reflect.Method.invoke(Unknown Source)

at org.codehaus.groovy.runtime.callsite.PojoMetaMethodSite$PojoCachedMethodSiteNoUnwrapNoCoerce.invoke(PojoMetaMethodSite.java:229)

at org.codehaus.groovy.runtime.callsite.PojoMetaMethodSite.call(PojoMetaMethodSite.java:52)

at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:121)

at UISiteBody.run(UISiteBody.gtmpl:31)