switchboard.xml

<switchboard>
    <component>
        <component-name>MyBean</component-name>
        <ejb-ref>
            <ejb-ref-name>a</ejb-ref-name>
            <ejb-link>OtherBean</ejb-link>
            <injection-target>
                <injection-target-class>A</injection-target-class>
                <injection-target-name>someBean</injection-target-name>
            </injection-target>
        </ejb-ref>
    </component>
    <!-- java:module/a -->
    <ejb-ref>
        <ejb-ref-name>a</ejb-ref-name>
        <ejb-link>OtherBean</ejb-link>
        <injection-target>
            <injection-target-class>B</injection-target-class>
            <injection-target-name>someBean</injection-target-name>
        </injection-target>
    </ejb-ref>
</switchboard>