| 1 | // With BoolWeight, ((A AND_NOT B) OR C) AND D returns a document that has
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| 2 | // A, B and D, which the AND_NOT should exclude.
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| 3 | //
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| 4 | // Build: c++ andnot-boolweight.cc $(xapian-config --cxxflags --libs)
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| 5 | // Run: ./a.out
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| 6 | //
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| 7 | // Xapian 2.1.0 prints "1 matches (expected 0)"; 1.4 prints "0 matches".
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| 8 | #include <xapian.h>
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| 9 | #include <iostream>
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| 10 |
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| 11 | int main() {
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| 12 | Xapian::WritableDatabase db("/tmp/andnot-db", Xapian::DB_CREATE_OR_OVERWRITE);
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| 13 | Xapian::Document doc1;
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| 14 | doc1.add_term("A");
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| 15 | doc1.add_term("B");
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| 16 | doc1.add_term("D");
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| 17 | db.add_document(doc1);
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| 18 | Xapian::Document doc2;
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| 19 | doc2.add_term("C");
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| 20 | db.add_document(doc2);
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| 21 | db.commit();
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| 22 |
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| 23 | Xapian::Query q = ((Xapian::Query("A") &~ Xapian::Query("B")) |
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| 24 | Xapian::Query("C")) & Xapian::Query("D");
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| 25 | Xapian::Enquire enq(db);
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| 26 | enq.set_weighting_scheme(Xapian::BoolWeight());
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| 27 | enq.set_query(q);
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| 28 | std::cout << "Xapian " << Xapian::version_string() << ": "
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| 29 | << enq.get_mset(0, 10).size() << " matches (expected 0)\n";
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| 30 | }
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