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Editorial Team
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Asked: 2026-06-10T06:22:08+00:00

I am creating a JSF2 Facelets composite component. I would like the HTML to

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I am creating a JSF2 Facelets composite component. I would like the HTML to render differently if a particular facet is defined. Is there any way to check if a <f:facet name="..." /> has been defined for a composite component?

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  1. Editorial Team

    Yes, you can use UIComponent#getFacets() to get a mapping of all facets by their name. So all you need to do is to check if the map value is not empty.

    <h:panelGroup rendered="#{not empty cc.facets.foo}">
    The facet with name "foo" has been definied for this composite!
</h:panelGroup>
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