I've had the same problem and did a workaround to get it working until some of the Project gurus solve this issue.
Instead of setting null to the property in the managed bean, you should set null to the submitted value of the nested component like this:
CoreSelectOneChoice choice = (CoreSelectOneChoice)parent.findComponent("selectCardOrCheckType");
> Issue with <tr:selectOneChoice> - Implementing dependent select boxes
> ---------------------------------------------------------------------
>
> Key: TRINIDAD-1523
> URL:
https://issues.apache.org/jira/browse/TRINIDAD-1523> Project: MyFaces Trinidad
> Issue Type: Bug
> Components: Components
> Affects Versions: 1.2.11-core
> Environment: Windows
> Reporter: Vijay Ramalingam
>
> I am trying to implement dependent select boxes using trinidad. I have 2 drop down box, say A and B. I have set the autoSubmit="true" in dropdown A and specified partialTriggers with dropdwon B. When i change the A drop down B changes, as expected. But when i change any value in B dropdown and again change A. I get the below error.
> java.lang.IndexOutOfBoundsException: SelectOne submittedValue''s index 1 is out of bounds. It should be between 0 and 0
> at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.SimpleSelectOneRenderer.__getIndex(SimpleSelectOneRenderer.java:423)
> at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.SimpleSelectOneRenderer._convertIndexedSubmittedValue(SimpleSelectOneRenderer.java:214)
> at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.SimpleSelectOneRenderer.getConvertedValue(SimpleSelectOneRenderer.java:181)
> at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.InputLabelAndMessageRenderer.getConvertedValue(InputLabelAndMessageRenderer.java:65)
> at org.apache.myfaces.trinidad.component.UIXEditableValue.getConvertedValue(UIXEditableValue.java:422)
> at org.apache.myfaces.trinidad.component.UIXEditableValue.validate(UIXEditableValue.java:164)
> at org.apache.myfaces.trinidad.component.UIXEditableValue._executeValidate(UIXEditableValue.java:488)
> at org.apache.myfaces.trinidad.component.UIXEditableValue.processValidators(UIXEditableValue.java:270)
> at javax.faces.component.UIForm.processValidators(UIForm.java:74)
> at javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:709)
> at javax.faces.component.UIViewRoot.access$101(UIViewRoot.java:43)
> at javax.faces.component.UIViewRoot$2.process(UIViewRoot.java:97)
> at javax.faces.component.UIViewRoot.process(UIViewRoot.java:206)
> at javax.faces.component.UIViewRoot.processValidators(UIViewRoot.java:93)
> at org.apache.myfaces.lifecycle.ProcessValidationsExecutor.execute(ProcessValidationsExecutor.java:32)
> at org.apache.myfaces.lifecycle.LifecycleImpl.executePhase(LifecycleImpl.java:103)
> at org.apache.myfaces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:76)
> at javax.faces.webapp.FacesServlet.service(FacesServlet.java:148)
> at arch.jsf.JsfResource.process(JsfResource.java:145)
> at arch.presentation.beans.WebApplication._doServletFilterForRequest(WebApplication.java:564)
> at arch.presentation.beans.WebApplication.processResource(WebApplication.java:1368)
> at arch.presentation.beans.WebApplication.processRequest(WebApplication.java:2531)
> at arch.service.beans.ServiceContainer.processRequest(ServiceContainer.java:3913)
> at arch.no.engine.Context.processRequest(Context.java:68)
> at arch.no.engine.HttpConnector.processRequest(HttpConnector.java:58)
> at arch.no.http.Response.prepare(Response.java:563)
> at arch.no.http.Response._execute(Response.java:1975)
> at arch.no.http.Response.execute(Response.java:1910)
> at arch.no.http.HttpThreadPool._run(HttpThreadPool.java:32)
> at arch.util.ThreadPool._runLoopBody(ThreadPool.java:215)
> at arch.util.ThreadPool._runForThread(ThreadPool.java:232)
> at arch.util.ThreadPool.access$000(ThreadPool.java:5)
> at arch.util.ThreadPool$1.run(ThreadPool.java:97)
> Please find my XHTML content
> ------------------------------------------
> <f:view>
> <h:form id="dropDownForm">
> <tr:selectOneChoice valueChangeListener="#{dropdownbean.processAccountFeatureChange}" binding="#{dropdownbean.selectAccountFeature}" autoSubmit="true" value="#{dropdownbean.accountFeature}" id="selectAccountFeature" size="1">
> <f:selectItems value="#{dropdownbean.accountFeatureMap}" />
> </tr:selectOneChoice>
> <tr:selectOneChoice binding="#{dropdownbean.selectCardOrCheckType}" partialTriggers="selectAccountFeature" value="#{dropdownbean.cardOrCheckType}" id="selectCardOrCheckType" size="1">
> <f:selectItems value="#{dropdownbean.checkTypeMap}" />
> </tr:selectOneChoice>
> </h:form>
> </f:view>
> Please find my Bean code
> ------------------------------------
> public class DropDownBean {
> CoreSelectOneChoice selectAccountFeature;
>
> CoreSelectOneChoice selectCardOrCheckType;
>
> String accountFeature="1";
>
> String cardOrCheckType="SCO";
>
> Map accountFeatureMap;
>
> Map checkTypeMap;
> public DropDownBean(){
> super();
> AMAConfig amaConfig = new AMAConfig();
> accountFeatureMap = amaConfig.getAcctFeatureMap();
> checkTypeMap = amaConfig.getSilverLevelCheckTypeMap();
> }
>
> public void setSelectAccountFeature(CoreSelectOneChoice selectAccountFeature){
> this.selectAccountFeature = selectAccountFeature;
> }
> public CoreSelectOneChoice getSelectAccountFeature(){
> return this.selectAccountFeature;
> }
>
> public void setSelectCardOrCheckType(CoreSelectOneChoice selectCardOrCheckType){
> this.selectCardOrCheckType = selectCardOrCheckType;
> }
> public CoreSelectOneChoice getSelectCardOrCheckType(){
> return this.selectCardOrCheckType;
> }
>
> public String getAccountFeature(){
> return this.accountFeature;
> }
> public void setAccountFeature(String accountFeature){
> this.accountFeature = accountFeature;
>
>
> AMAConfig amaConfig = (AMAConfig)getValue("#{amaConfig}", AMAConfig.class);
>
> if("1".equals(accountFeature)){
> this.cardOrCheckType = "SCO";
> checkTypeMap = amaConfig.getSilverLevelCheckTypeMap();
> }else if("2".equals(accountFeature)){
> this.cardOrCheckType = "GCC";
> checkTypeMap = amaConfig.getGoldLevelCheckTypeMap();
> }else {
> this.cardOrCheckType = "PCC";
> checkTypeMap = amaConfig.getPlatinumLevelCheckTypeMap();
> }
> }
>
> public void setCardOrCheckType(String cardOrCheckType){
> this.cardOrCheckType = cardOrCheckType;
> }
> public String getCardOrCheckType(){
> return this.cardOrCheckType;
> }
>
> public Map getAccountFeatureMap(){
> return this.accountFeatureMap;
> }
>
> public Map getCheckTypeMap(){
> return this.checkTypeMap;
> }
>
> public void processAccountFeatureChange(ValueChangeEvent vce){
> System.out.println("\nprocessAccountFeatureChange\n");
> selectCardOrCheckType.setValue(null);
> }
> }
> I declared my bean as
> <managed-bean>
> <managed-bean-name>dropdownbean</managed-bean-name>
> <managed-bean-class>DropDownBean</managed-bean-class>
> <managed-bean-scope>request</managed-bean-scope>
> </managed-bean>
> Please help me.