''Expand on the summary, if appropriate. A couple sentences suffices to explain the goal, but the more details you can provide the better.''
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Instead of having complicated query format for org.laptop.sugar.DataStore::find(), use plane string [http://www.xapian.org/docs/queryparser.html full featured] query format i.e. use all system query parameters(like timestamp, mime_type etc.) with user query string(from former find()'s 'query' argument).