A program to index the text and hidden text in pdf documents

I require a program to index the text and hidden text within a folder with subfolders of pdf documents and a search program that allows searches of the indexed documents. The Indexing program must be able to index pdf’s automatically as new files are added or on certain intervals (have an indexing component that runs as a service). The index should be in a simple format for speed. The Search program must have a preview window that shows the pdf document from the search panel results in the window and go to the page that contains the text found. The text search function must be able to search both numbers as well as text, and be able to conduct searches based on the format of Acrobat Reader 8.0. The search must show the user a list of the documents that contain the word(s) in a panel on the left hand side of the program. The program must be able to work on all windows platforms. The program must allow Adobe Acrobat viewer the ability to show its buttons and scroll bars so that the user can print or perform any of the other Acrobat functions within the preview window. Double clicking on the Acrobat viewer should make the document that is in the viewer panel open in Acrobat in a separate Acrobat window. The program should be able to handle several hundred thousand pdf files. ## Deliverables The program needs to have the ability? of an? option that tells the program which directory and its subdirectories in which to perform the indexing.