Map Complex Datastructure with Solr

[Thomas Gravel]

Hi,
how can I map these complex Datastructure in Solr?

Document
    - Groups
         - Group_ID
         - Group_Name
         - .....
   - Title
   - Chapter
         - Chapter_Title
         - Chapter_Content


Or

Product
    - Groups
         - Group_ID
         - Group_Name
         - .....
   - Title
   - Articles
         - Artilce_ID
         - Artilce_Color
         - Artilce_Size

Thanks for ideas....