Determine if current component is being pulled in by paragraph reference?

Question

Is there a way to determine at the component level if the current component is currently being imported into a paragraph reference component? A simple example would look like this in the component's jsp:
if (/* Being Referenced */) {
     out.write("This component is pulled in by a paragraph reference");
} else {
     out.write("This component is the original");
I thought i'd be able to tell by using resource.getParent(), but that returns the original component's parent.
I know i could compare the page path with the component's resource path if they were on different pages, but that wouldn't work out if the reference component and original component were on the same page.

Answer 1

Sure, this is what we're doing (i'm sure there must be a better way) -
Our pages will serve many users across different areas and roles. The authors wanted the ability to create one master page that will display certain components to only a certain area or role. For example, one text box should only be displayed to "south" users and another only to "west" users. To accomplish this we added tagging for each component and when a component loads on a page it does a check to display if the user has the same tags it has been tagged with. Looks something like this in the component jsp -
<% if (componentAreaTag == userAreaTag) { %>
     <h1>Component Is Displayed</h1>
<% } %>
The problem with this is that a reference component also needs to be tagged independently of the component it is referencing. So right now it processes the reference component's tags to see if the user can access the component and then checks the referenced component before displaying. Ends up processing something like this -
<% if (referenceComponentTag == userTag) { %> //From reference component
     <% if (componentTag == userTag) { %> //From component being referenced
          <h1>Component Is Displayed</h1>
     <% } %>
<% } %>
We need it not to care about the original component's tag when coming in through a reference component.