Question

I use this questions to create a composite component with the behaviour of a time selector.

This is my composite xhtml

<ui:composition xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:cc="http://java.sun.com/jsf/composite"
xmlns:rich="http://richfaces.org/rich">
<cc:interface componentType="customTimeBean">
    <cc:attribute name="date" type="java.util.Date" required="true" />
</cc:interface>
<cc:implementation>
    <rich:inputNumberSpinner value="#{cc.hours}" minValue="0"
        maxValue="23" />
    <h:outputLabel value=":" />
    <rich:inputNumberSpinner value="#{cc.minutes}" minValue="0"
        maxValue="59" />
</cc:implementation>
</ui:composition>

This is my Faces Component

@FacesComponent(value = "customTimeBean")
public class CustomTimeBean extends UINamingContainer {

    private Date getDate() {

        Date d = (Date) getAttributes().get("date");
        if (d == null) {
            //throw new RuntimeException("Date no debe ser nulo");
            d = new date();
        }
        return d;
    }

    public void setMinutes(int value) {

        getDate().setMinutes(value);
    }

    public void setHours(int value) {

        getDate().setHours(value);
    }

    public int getMinutes() {

        return getDate().getMinutes();
    }

    public int getHours() {

        return getDate().getHours();
    }

    public void setSeconds(int value) {

        getDate().setHours(value);
    }

    public int getSeconds() {

        return getDate().getSeconds();
    }

}

And the usage

<sigh:time date="#{bean.date}" hasSeconds="false"/>

My test case:

<h:outputLabel value="#{controller.date}" id="date" />
<sigh:time date="#{controller.date}" />
<a4j:commandButton render="date" />

The “controller”:

@ManagedBean
public class Controller  {

    Date date;

    public Date getDate() {

        return date;
    }

    public void setDate(Date date) {

        this.date = date;
    }
}     

This works well, but, this doesn’t work when I pass a null Date as attribute, how can I update the value in the Bean (controller.date)?

In my test case, when I press the a4j:commandButton and date in the controller is null, the outputlabel dont show nothing (date is null), when the date is not null, the date is update everytime I click the Button.

Sorry for my bad english.

Thanks!

Answer 1

Just replace

throw new RuntimeException("Date no debe ser nulo");

by

d = new Date();

---

Unrelated to the concrete problem, the Date methods which you’re using there are deprecated. See also the javadoc. The main reason is that it doesn’t deal with timezones/DST properly. You should internally in the composite be using java.util.Calendar instead.