[p2-dev] How to define p2 sub-categories using category.xml

[Dileepa Jayakody <dileepa@xxxxxxxx>]

Hi All,

We use P2 Category Publisher tool to publish category metadata to our p2-repo.  And now the features are categorized based on our Products. 
Now we have a requirement to list sub-level categories based on functionality of features under main feature categories. Is there a way to define sub-categories using category.xml or a work-around to achieve this?
 
For example in the following sample category.xml [1] how can I define category c2.1 as a subcategory under c2?
Also Can I give version IDs for my category-defs?


Thanks in advance,
Dileepa

[1]
<site>
   <feature url="" id=":1lc">SNAPSHOT.jar" id="a" version="1.0.0.SNAPSHOT">

      <category name="c1"/>
   </feature>
   <feature url="" id="b" version="1.0.0.SNAPSHOT">
      <category name="c1"/>

   </feature>
   <feature url="" id="c" version="1.0.0.SNAPSHOT">
      <category name="c2"/>
   </feature>
   <feature url="" id="d" version="1.0.0.SNAPSHOT">

      <category name="c2.1"/>
   </feature>

   <category-def name="c1" label="Category-A"/>
   <category-def name="c2" label="Category-B"/>

   <category-def name="c2.1" label="Category-B-II"/>
</site>