Is it possible to call parameterized method-signature inside a composite-component?

Question

im currently creating a JSF composite-component with a method signature that can accept parameters.

Here's the excerpt :

<composite:interface>
    ....
    <composite:attribute name="activateHeroMethod" method-signature="java.util.List action(id.co.sofcograha.core.Dto, id.co.sofcograha.core.Dto)" />
</composite:interface>

<composite:implementation>
    ....
    <p:commandLink value="#{hero.map['heroName']}"
        process="@this"
        update="#{cc.attrs.update}"
        oncomplete="infoRaceDialog.hide()"
        image="ui-icon ui-icon-search">
        <f:setPropertyActionListener value="#{hero}"
            target="#{cc.attrs.activateHeroMethod(infoRaceBean.race, hero)}" />
    </p:commandLink>
    ....
</composite:implementation>

target="#{cc.attrs.activateHeroMethod(infoRaceBean.race, hero)}" fails horribly with the following error message :

javax.faces.view.facelets.TagAttributeException: /resources/sofco/infoRace.xhtml @57,76 target="#{cc.attrs.activateHeroMethod(infoRaceBean.race, hero)}" /resources/sofco/infoRace.xhtml @57,76 target="#{cc.attrs.activateHeroMethod(infoRaceBean.race, hero)}" Illegal attempt to pass arguments to a composite component lookup expression (i.e. cc.attrs.[identifier]).
        at com.sun.faces.facelets.tag.TagAttributeImpl.getValueExpression(TagAttributeImpl.java:401)
        at com.sun.faces.facelets.tag.TagAttributeImpl.getValueExpression(TagAttributeImpl.java:351)
        at com.sun.faces.facelets.tag.jsf.core.SetPropertyActionListenerHandler.applyAttachedObject(SetPropertyActionListenerHandler.java:128)
        at com.sun.faces.facelets.tag.jsf.core.SetPropertyActionListenerHandler.apply(SetPropertyActionListenerHandler.java:101)

Is it possible to call the parameterized method from a composite-component's attribute ? I think i can deal with multiple as a workaround of working with multiple parameters in one method, but i dont like the approach, since it'll grow in size along with the parameters.

I could wrap every params into 1 wrapper object, but im still curious whether there's a way to solve the problem of calling the method with multiple params.

Please share your thoughts !

Thank you.

Answer 1

Yes is possible to do that, do it like this:

<composite:interface displayName="Image uploader with preview list">
        <composite:attribute name="backingBean" required="true" />
        <composite:attribute name="imageType" required="true"  />
</composite:interface>
....
<p:commandButton  value="Save"  actionListener="#{cc.attrs.backingBean.imageUploaded(cc.attrs.imageType)}"/>

Hope this helps some body.