Class: Xapian::Database

Inherits:
Object
  • Object
show all
Defined in:
lib/xapian.rb

Overview

Refer to the Xapian::Database C++ API documentation for methods not specific to Ruby. – Wrap some dangerous iterators.

Instance Method Summary collapse

Instance Method Details

#allterms ⇒ Object

Returns an Array of all Xapian::Terms for this database.



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# File 'lib/xapian.rb', line 249

def allterms
  Xapian._safelyIterate(self._dangerous_allterms_begin(), 
                        self._dangerous_allterms_end()) { |item|
    Xapian::Term.new(item.term, 0, item.termfreq)
  }
end

#positionlist(docid, term) ⇒ Object

Returns an Array of Xapian::Termpos objects for the given term (a String) in the given docid.



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# File 'lib/xapian.rb', line 275

def positionlist(docid, term)
  Xapian._safelyIterate(self._dangerous_positionlist_begin(docid, term),
                        self._dangerous_positionlist_end(docid, term)) { |item|
    item.termpos
  }
end

#postlist(term) ⇒ Object

Returns an Array of Xapian::Postings for the given term. term is a string.



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# File 'lib/xapian.rb', line 258

def postlist(term)
  Xapian._safelyIterate(self._dangerous_postlist_begin(term), 
                        self._dangerous_postlist_end(term)) { |item|
    Xapian::Posting.new(item.docid, item.doclength, item.wdf)
  }      
end

#termlist(docid) ⇒ Object

Returns an Array of Terms for the given docid.



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# File 'lib/xapian.rb', line 266

def termlist(docid)
  Xapian._safelyIterate(self._dangerous_termlist_begin(docid),
                        self._dangerous_termlist_end(docid)) { |item|
    Xapian::Term.new(item.term, item.wdf, item.termfreq)
  }
end

#valuestream(slot) ⇒ Object

Returns an Array of Xapian::Value objects for the given slot in the database.



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# File 'lib/xapian.rb', line 284

def valuestream(slot)
  Xapian._safelyIterate(self._dangerous_valuestream_begin(slot),
                        self._dangerous_valuestream_end(slot)) { |item|
    Xapian::Value.new(item.value, slot, item.docid)
  }
end