JSF 2 ui:repeat vs h:datatable behavior

问题

I had a bad time trying to solve p:selectBooleanButton doesn't render preselected value, a lot of hours just to fix it changing ui:repeat to h:datatable.

Here is both pieces of code.

 <ui:repeat value="#{presupuestoBean.getItemsPresupuestBySeccion('Parte Delantera')}" var="itemPresupuesto">
    <tr>
        <td><h:outputText value="#{itemPresupuesto.descripcion}"/></td>
        <td>
            <p:selectBooleanButton value="#{presupuestoBean.itemsPresupuestoAsignadoCambiar[itemPresupuesto.id]}" onLabel="Yes" offLabel="No" onIcon="ui-icon-check" offIcon="ui-icon-close"/>
            <h:outputText value="#{presupuestoBean.itemsPresupuestoAsignadoCambiar[itemPresupuesto.id]}" />
        </td>
    </tr>
</ui:repeat>

(Notice that the button is showing 'FALSE (or NO)' value although the property value is 'TRUE' as displayed by outputText)

On the other hand, the exactly same code with h:datatable.

 <h:dataTable value="#{presupuestoBean.getItemsPresupuestBySeccion('Parte Delantera')}" var="itemPresupuesto2">
    <h:column>
         <h:outputText value="#{itemPresupuesto2.descripcion}"/>
    </h:column>
    <h:column>
        <p:selectBooleanButton value="#{presupuestoBean.itemsPresupuestoAsignadoCambiar[itemPresupuesto2.id]}" onLabel="Si" offLabel="No" onIcon="ui-icon-check" offIcon="ui-icon-close"/>
        <h:outputText value="#{presupuestoBean.itemsPresupuestoAsignadoCambiar[itemPresupuesto2.id]}" />
    </h:column>
</h:dataTable>

Anyone know why is this happening ??. As far as I know, this two tags could be exchangeable. (at least according the example that I saw e.g JSF 2 Repeat Tag Example)

I'm using com.sun.faces jsf-api and jsf-impl 2.2.4 Also Primefaces 4.0

回答1:

You confuse view build time with view render time! BalusC posted an explanation here:

JSTL in JSF2 Facelets... makes sense?

回答2:

I had the same behavior, and was not able to make work the ui:repeat properly with map and default value. As you are using primefaces, you might also found p:dataGrid as an alternative to h:dataTable.

来源：https://stackoverflow.com/questions/20598827/jsf-2-uirepeat-vs-hdatatable-behavior

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jsf-2