[Orgmode] Searching inside of attachments (pdf, odt)?

[Karl Maihofer]

Hi,

does anyone use something like Lucene[*] with orgmode to search inside  
attachments like pdf- and odt-files? At the moment I use org for  
time-planning and a stand-alone Confluence wiki for knowledge  
management (which uses Lucene to index attachments). My "knowledge  
management" mainly consists of a large amount of pdf-files. If I could  
search inside attachments with org, I could perhaps switch to an  
Emacs-only solution. That would be awesome.

Kind regards,
Karl

[*] http://en.wikipedia.org/wiki/Lucene