How to implement searching? [closed]

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Closed 3 years ago.

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we are trying to add searching to our web site and want this search function to search only a few things:

• Files - Obviously we need to parse the text of PDF, PPT and DOC files in our case
• User comments. Users will be available to comment on the stuff and we want to catch if some user is searching for that relative information

I would like to have your advices on how to develop such a system. Should we get an external search system such as Google's or just install an open source one or develop a new one from scratch.

Thanks.

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Check out this one: http://lucene.apache.org/solr/