Primefaces autocomplete mit einem POJO-Liste und einen String als default-Wert

ich versuche, die primefaces autoComplete-Komponente mit POJO.

Ich weiß, ich brauche einen Konverter. Ich habe erfolgreich verwendet, es viele Zeit vor. Aber diesmal habe ich eine spezielle Anforderung.

Ich brauche die POJO-nur um zu zeigen, viele Spalten für den Benutzer, aber wenn Sie selektiert ist, ich will nur eins zu bekommen, der seine Eigenschaft (Zeichenfolge), nicht auf die POJO selbst.

Wenn ich verwendet habe, autoComplete erfolgreich ist es nur mit voll POJO, ich meine : eine Liste von POJO und auf die Auswahl bekommen auch ein POJO (und nicht nur einer sein Eigentum ist).

<p:autoComplete
        value="#{testBean.selectedA.val2}"
        completeMethod="#{testBean.testAutoComplete}"
        var="varB" 
        itemLabel="#{varB.val10}"
        itemValue="#{varB.val10}" 
        forceSelection="true" dropdown="true">

        <p:column>
            <h:outputText value="#{varB.val10}" />
        </p:column>
        <p:column>
            <h:outputText value="#{varB.val11}" />
        </p:column>

</p:autoComplete>

Hier testBean.selectedA.Wert2 ist der Typ String. In der Tat selectedA ist ein DTO, so dass innen alles Eigentum sind von primitiver Typ oder String-Typ, aber keine anderen POJO.

varB ist ein POJO

varB.val10 ist vom Typ String.

varB.val11 ist vom Typ String.

Wenn in meiner backing-bean testBean.selectedA.Wert2 ist leer/null gibt es kein problem.
Nun, wenn ich muss initialisiert diese mit dem Wert (testBean.selectedA.val2) in der backing-bean zu zeigen, einen Wert für den Benutzer, bekomme ich einen Fehler.
Also ich weiß nicht, wie ich ein default-Wert in die String-Eigenschaft verknüpft, um die AutoVervollständigen -

INFO  [stdout] (default task-15) /test.xhtml @26,42 itemLabel="#{varB.val10}": The class 'java.lang.String' does not have the property 'val10'.

Ich denke mein problem ist da ich mit autoComplete mit POJO-Liste, sondern nur eine String-Eigenschaft als Ergebnis.

Des Problems wie folgt Aussehen : Ist das ein bug in primefaces autocomplete?

Haben Sie irgendwelche Ideen ?
Ist es möglich, verwenden von AutoVervollständigen in diesen Bedingungen ?
Danke im Voraus für Eure Hilfe.

Unten sind einige zusätzliche Informationen.

Meine Konfiguration :

Primefaces 5.1.6

Wildfly 8.1

Volle stack-trace :

11:00:32,915 SEVERE [javax.enterprise.resource.webcontainer.jsf.application] (default task-15) Error Rendering View[/test.xhtml]: javax.el.PropertyNotFoundException: /test.xhtml @26,42 itemLabel="#{varB.val10}": The class 'java.lang.String' does not have the property 'val10'.
    at com.sun.faces.facelets.el.TagValueExpression.getValue(TagValueExpression.java:111) [jsf-impl-2.2.6-jbossorg-4.jar:]
    at javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:194) [jboss-jsf-api_2.2_spec-2.2.6.jar:2.2.6]
    at org.primefaces.component.autocomplete.AutoComplete.getItemLabel(AutoComplete.java:152) [primefaces-5.1.6.jar:5.1.6]
    at org.primefaces.component.autocomplete.AutoCompleteRenderer.encodeInput(AutoCompleteRenderer.java:189) [primefaces-5.1.6.jar:5.1.6]
    at org.primefaces.component.autocomplete.AutoCompleteRenderer.encodeSingleMarkup(AutoCompleteRenderer.java:146) [primefaces-5.1.6.jar:5.1.6]
    at org.primefaces.component.autocomplete.AutoCompleteRenderer.encodeMarkup(AutoCompleteRenderer.java:129) [primefaces-5.1.6.jar:5.1.6]
    at org.primefaces.component.autocomplete.AutoCompleteRenderer.encodeEnd(AutoCompleteRenderer.java:107) [primefaces-5.1.6.jar:5.1.6]
    at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:919) [jboss-jsf-api_2.2_spec-2.2.6.jar:2.2.6]
    at com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.encodeRecursive(HtmlBasicRenderer.java:312) [jsf-impl-2.2.6-jbossorg-4.jar:]
    at com.sun.faces.renderkit.html_basic.GridRenderer.renderRow(GridRenderer.java:185) [jsf-impl-2.2.6-jbossorg-4.jar:]
    at com.sun.faces.renderkit.html_basic.GridRenderer.encodeChildren(GridRenderer.java:129) [jsf-impl-2.2.6-jbossorg-4.jar:]
    at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:889) [jboss-jsf-api_2.2_spec-2.2.6.jar:2.2.6]
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1857) [jboss-jsf-api_2.2_spec-2.2.6.jar:2.2.6]
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1860) [jboss-jsf-api_2.2_spec-2.2.6.jar:2.2.6]
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1860) [jboss-jsf-api_2.2_spec-2.2.6.jar:2.2.6]
    at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:461) [jsf-impl-2.2.6-jbossorg-4.jar:]
    at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:133) [jsf-impl-2.2.6-jbossorg-4.jar:]
    at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:337) [jboss-jsf-api_2.2_spec-2.2.6.jar:2.2.6]
    at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:337) [jboss-jsf-api_2.2_spec-2.2.6.jar:2.2.6]
    at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:337) [jboss-jsf-api_2.2_spec-2.2.6.jar:2.2.6]
    at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:120) [jsf-impl-2.2.6-jbossorg-4.jar:]
    at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101) [jsf-impl-2.2.6-jbossorg-4.jar:]
    at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:219) [jsf-impl-2.2.6-jbossorg-4.jar:]
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:647) [jboss-jsf-api_2.2_spec-2.2.6.jar:2.2.6]
    at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:85) [undertow-servlet-1.0.15.Final.jar:1.0.15.Final]
    at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:130) [undertow-servlet-1.0.15.Final.jar:1.0.15.Final]
    at fr.legrain.solstyce.webapp.AuthFilter.doFilter(AuthFilter.java:65) [classes:]
    at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:60) [undertow-servlet-1.0.15.Final.jar:1.0.15.Final]
    at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:132) [undertow-servlet-1.0.15.Final.jar:1.0.15.Final]
    at io.undertow.servlet.handlers.FilterHandler.handleRequest(FilterHandler.java:85) [undertow-servlet-1.0.15.Final.jar:1.0.15.Final]
    at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:61) [undertow-servlet-1.0.15.Final.jar:1.0.15.Final]
    at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36) [undertow-servlet-1.0.15.Final.jar:1.0.15.Final]
    at org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.handleRequest(SecurityContextAssociationHandler.java:78)
    at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) [undertow-core-1.0.15.Final.jar:1.0.15.Final]
    at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:113) [undertow-servlet-1.0.15.Final.jar:1.0.15.Final]
    at io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:56) [undertow-servlet-1.0.15.Final.jar:1.0.15.Final]
    at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) [undertow-core-1.0.15.Final.jar:1.0.15.Final]
    at io.undertow.security.handlers.AuthenticationConstraintHandler.handleRequest(AuthenticationConstraintHandler.java:51) [undertow-core-1.0.15.Final.jar:1.0.15.Final]
    at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:45) [undertow-core-1.0.15.Final.jar:1.0.15.Final]
    at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:61) [undertow-servlet-1.0.15.Final.jar:1.0.15.Final]
    at io.undertow.servlet.handlers.security.ServletSecurityConstraintHandler.handleRequest(ServletSecurityConstraintHandler.java:56) [undertow-servlet-1.0.15.Final.jar:1.0.15.Final]
    at io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:58) [undertow-core-1.0.15.Final.jar:1.0.15.Final]
    at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:70) [undertow-servlet-1.0.15.Final.jar:1.0.15.Final]
    at io.undertow.security.handlers.SecurityInitialHandler.handleRequest(SecurityInitialHandler.java:76) [undertow-core-1.0.15.Final.jar:1.0.15.Final]
    at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) [undertow-core-1.0.15.Final.jar:1.0.15.Final]
    at org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:61)
    at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) [undertow-core-1.0.15.Final.jar:1.0.15.Final]
    at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) [undertow-core-1.0.15.Final.jar:1.0.15.Final]
    at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:240) [undertow-servlet-1.0.15.Final.jar:1.0.15.Final]
    at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:227) [undertow-servlet-1.0.15.Final.jar:1.0.15.Final]
    at io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:73) [undertow-servlet-1.0.15.Final.jar:1.0.15.Final]
    at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:146) [undertow-servlet-1.0.15.Final.jar:1.0.15.Final]
    at io.undertow.server.Connectors.executeRootHandler(Connectors.java:177) [undertow-core-1.0.15.Final.jar:1.0.15.Final]
    at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:727) [undertow-core-1.0.15.Final.jar:1.0.15.Final]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [rt.jar:1.7.0_25]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [rt.jar:1.7.0_25]
    at java.lang.Thread.run(Thread.java:724) [rt.jar:1.7.0_25]
Caused by: javax.el.PropertyNotFoundException: The class 'java.lang.String' does not have the property 'val10'.
    at javax.el.BeanELResolver.getBeanProperty(BeanELResolver.java:731) [jboss-el-api_3.0_spec-1.0.3.Final.jar:1.0.3.Final]
    at javax.el.BeanELResolver.getValue(BeanELResolver.java:351) [jboss-el-api_3.0_spec-1.0.3.Final.jar:1.0.3.Final]
    at com.sun.faces.el.DemuxCompositeELResolver._getValue(DemuxCompositeELResolver.java:176) [jsf-impl-2.2.6-jbossorg-4.jar:]
    at com.sun.faces.el.DemuxCompositeELResolver.getValue(DemuxCompositeELResolver.java:203) [jsf-impl-2.2.6-jbossorg-4.jar:]
    at com.sun.el.parser.AstValue.getValue(AstValue.java:140) [javax.el-3.0.0.jar:]
    at com.sun.el.parser.AstValue.getValue(AstValue.java:204) [javax.el-3.0.0.jar:]
    at com.sun.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:226) [javax.el-3.0.0.jar:]
    at org.jboss.weld.el.WeldValueExpression.getValue(WeldValueExpression.java:50) [weld-core-impl-2.2.5.Final.jar:2014-09-15 07:54]
    at org.jboss.weld.el.WeldValueExpression.getValue(WeldValueExpression.java:50) [weld-core-impl-2.2.5.Final.jar:2014-09-15 07:54]
    at com.sun.faces.facelets.el.TagValueExpression.getValue(TagValueExpression.java:109) [jsf-impl-2.2.6-jbossorg-4.jar:]
    ... 56 more

Habe ich versucht zu machen, hier ein einfaches Beispiel, um zu zeigen mein problem.

Die Ansicht test.xhtml :

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml"
    xmlns:h="http://java.sun.com/jsf/html"
    xmlns:f="http://java.sun.com/jsf/core"
    xmlns:ui="http://java.sun.com/jsf/facelets"
    xmlns:p="http://primefaces.org/ui">

<h:head>
    <title>Test</title>
</h:head>
<h:body>

    <h:panelGrid columns="2" cellpadding="10">

        <p:outputLabel value="A.val1 : " />
        <p:inputText value="#{testBean.selectedA.val1}"/>

        <p:outputLabel value="A.val2 : " />
        <p:autoComplete
            value="#{testBean.selectedA.val2}"
            completeMethod="#{testBean.testAutoComplete}"
            var="varB" 
            itemLabel="#{varB.val10}"
            itemValue="#{varB.val10}" 
            forceSelection="true" dropdown="true">
            <p:column>
                <h:outputText value="#{varB.val10}" />
            </p:column>
            <p:column>
                <h:outputText value="#{varB.val11}" />
            </p:column>
        </p:autoComplete>

    </h:panelGrid>

</h:body>
</html>

Der managed bean TestBean.java:

import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;

import javax.annotation.PostConstruct;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.ViewScoped;

@ManagedBean
@ViewScoped
public class TestBean implements Serializable {

    private static final long serialVersionUID = 7752061447417566324L;

    private A selectedA;

    private BService bService;

    @PostConstruct
        public void init() {
        bService = new BService();

        selectedA = new A();
        selectedA.setVal1("xxx");
        selectedA.setVal2("bb2"); //comment this line and there is no more problem
       }

    public List<B> testAutoComplete(String query) {
        List<B> allValues = bService.getAllValues();
        List<B> filteredValues = new ArrayList<B>();

        if(query==null || query.equals("")) {
            return allValues;
        } else {
            for (int i = 0; i < allValues.size(); i++) {
                B b = allValues.get(i);
                if(b.getVal10().toLowerCase().contains(query.toLowerCase())) {
                    filteredValues.add(b);
                }
            }
            return filteredValues;
        }
      }

    public A getSelectedA() {
        return selectedA;
    }

    public void setSelectedA(A selectedA) {
        this.selectedA = selectedA;
    }

}

Service BService.java :

import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;


public class BService implements Serializable {

    private static final long serialVersionUID = -7442506301755842723L;

    private static final List<B> allValues = new ArrayList<B>();

    public BService() {
        init();
    }

    public void init() {
        if(allValues.isEmpty()) {
            allValues.add(new B("aa1", "ab"));
            allValues.add(new B("bb2", "abc"));
            allValues.add(new B("ab3", "abcd"));
        }
    }

    public List<B> getAllValues() {
        return allValues;
    }

}

Den Konverter BConverter.java :

import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.convert.Converter;
import javax.faces.convert.FacesConverter;


@FacesConverter(forClass=B.class)
public class BConverter implements Converter {

    private BService bService = new BService();

    @Override
    public String getAsString(FacesContext context, UIComponent component, Object valueToRender) {
        if (valueToRender == null || valueToRender.equals("")) {  
            return "";  
        } else {  
            return String.valueOf(((B) valueToRender).getVal10());
        }  
    }

    @Override
    public Object getAsObject(FacesContext context, UIComponent component, String submittedValue) {
        if (submittedValue.trim().equals("")) {  
            return null;  
        } else {  
            try {  
                //int number = Integer.parseInt(submittedValue);  
                return bService.getAllValues().get(bService.getAllValues().indexOf(submittedValue));
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
        return submittedValue;
   }

}

Klasse A.java :

public class A {

    private String val1;
    private String val2;

    public A() {

    }

    public A(String val1, String val2) {
        super();
        this.val1 = val1;
        this.val2 = val2;
    }

    public String getVal1() {
        return val1;
    }

    public void setVal1(String val1) {
        this.val1 = val1;
    }

    public String getVal2() {
        return val2;
    }

    public void setVal2(String val2) {
        this.val2 = val2;
    }

}

Klasse B.java :

public class B {

    private String val10;
    private String val11;

    public B() {

    }

    public B(String val10, String val11) {
        super();
        this.val10 = val10;
        this.val11 = val11;
    }

    public String getVal10() {
        return val10;
    }
    public void setVal10(String val10) {
        this.val10 = val10;
    }
    public String getVal11() {
        return val11;
    }
    public void setVal11(String val11) {
        this.val11 = val11;
    }

}