How to index pdf, ppt, xl files in lucene (java based or python or php any of these is fine)?

Question

Also I want to know how to add meta data while indexing so that i can boost some parameters

Answer 1

see https://github.com/WolfgangFahl/pdfindexer for a java solution that uses PDFBox and Apache Lucene to split the PDF files page by page to text, index these text-pages and create a resulting html index file that links to the pages in the pdf sources by using a corresponding open parameter.