Search attachments with Drupal 7

My goal is to search attachments using the search index in Drupal 7.

To me it appears as if there was no module available for this.

1. The only modules like search api attachments or apache solr attachments require Apache Solr with the Tika library. They need Java which is rarely supported by any hosting provider. It is not very reasonable to set up a server only for this function. There are some hosting services for Apache Solr but they donnot support the Tika library. e.g. http://www.midwesternmac.com/services/hosted-solr-search
   Acquia is too expensive. It is not reasonable to pay 350 bucks /anno only for searching in attachements.
2. On the other hand the module search files is not available for Drupal 7. There is dev version which is not functional. The last update is from January.
3. So the only way left for searching pdf or doc is the integration of an external service like Google.

Drupal is a powerfull system which should support a basic function like searching attachements in its newest version. For me this means using Drupal 7 is not a good solution for document management right no if you are not willing to set up your own server or pay a high ammount of money for this function.

Does anybody knows an alternative for this dilemma? Is there anybody working for a solution?