How can I implement a strict boolean query?

To perform a strict boolean query, you need to tell Xapian to use the boolean weighting scheme. Setting the boolean weighting scheme can be done (in C++ syntax) like this:

enquire.set_weighting_scheme(Xapian::BoolWeight());

or in Xapian 1.0.4 and later you can scale all the weights in the query by a factor of zero to achieve the same effect:

query = Xapian::Query(query.OP_SCALE_WEIGHT, query, 0);

Both approaches end up being handled the same way after query optimisation, so use whichever is most convenient for you.

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