Alex Rivera | Logout

instanceof check in EL expression language

Asked 2012-04-25T10:55:47.850
40

Is there a way to perform an instanceof check in EL?

E.g.

<h:link rendered="#{model instanceof ClassA}">      
    #{errorMessage1}
</h:link>
<h:link rendered="#{model instanceof ClassB}">      
    #{errorMessage2}
</h:link>
jsf el instanceof
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6

That doesn't work in EL. Use the backing bean for this:

public class MyBean {

    public boolean getIsClassA() {
        if(model instanceof ClassA) {
            return true;
        }
        return false;
    }


}

And then do the check by calling the backing bean:

<h:link outcome="#{PageNameA}?faces-redirect=true&amp;" rendered="#{myBean.isClassA}">      
    #{errorMessage}
</h:link>

answered 2012-04-25T11:01:52.603

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