GetESet() public method

public GetESet ( uint maxitems, RSet omrset ) : ESet
maxitems uint
omrset RSet
return ESet
コード例 #1
0
ファイル: SimpleExpand.cs プロジェクト: harlentan/xapian
    public static void Main(string[] argv) {
	// We require at least two command line arguments.
	if (argv.Length < 2) {
	    Console.Error.WriteLine("Usage: SimpleExpand PATH_TO_DATABASE QUERY [-- [DOCID...]]");
	    Environment.Exit(1);
	}

	try {
	    // Open the database for searching.
	    Xapian.Database database = new Xapian.Database(argv[0]);

	    // Start an enquire session.
	    Xapian.Enquire enquire = new Xapian.Enquire(database);

	    // Create an RSet to add the listed docids to.
	    Xapian.RSet rset = new Xapian.RSet();

	    // Combine command line arguments up to "--" with spaces between
	    // them, so that simple queries don't have to be quoted at the
	    // shell level.
	    string query_string = argv[1];
	    for (int i = 2; i < argv.Length; ++i) {
		if (argv[i] == "--") {
		    while (++i < argv.Length) {
			rset.AddDocument(Convert.ToUInt32(argv[i]));
		    }
		    break;
		}
		query_string += ' ';
		query_string += argv[i];
	    }

	    // Parse the query string to produce a Xapian::Query object.
	    Xapian.QueryParser qp = new Xapian.QueryParser();
	    Xapian.Stem stemmer = new Xapian.Stem("english");
	    qp.SetStemmer(stemmer);
	    qp.SetDatabase(database);
	    qp.SetStemmingStrategy(Xapian.QueryParser.stem_strategy.STEM_SOME);
	    Xapian.Query query = qp.ParseQuery(query_string);
	    Console.WriteLine("Parsed query is: " + query.GetDescription());

	    // Find the top 10 results for the query.
	    enquire.SetQuery(query);
	    Xapian.MSet matches = enquire.GetMSet(0, 10, rset);

	    // Display the results.
	    Console.WriteLine("{0} results found.", matches.GetMatchesEstimated());
	    Console.WriteLine("Matches 1-{0}:", matches.Size());

	    Xapian.MSetIterator m = matches.Begin();
	    while (m != matches.End()) {
		Console.WriteLine("{0}: {1}% docid={2} [{3}]\n",
				  m.GetRank() + 1,
				  m.GetPercent(),
				  m.GetDocId(),
				  m.GetDocument().GetData());
		++m;
	    }

	    // If no relevant docids were given, invent an RSet containing the
	    // top 5 matches (or all the matches if there are less than 5).
	    if (rset.Empty()) {
		int c = 5;
		Xapian.MSetIterator i = matches.Begin();
		while (c-- > 0 && i != matches.End()) {
		    rset.AddDocument(i.GetDocId());
		    ++i;
		}
	    }

	    // Generate an ESet containing terms that the user might want to
	    // add to the query.
	    Xapian.ESet eset = enquire.GetESet(10, rset);

	    Console.WriteLine(eset.Size());
	    // List the terms.
	    for (Xapian.ESetIterator t = eset.Begin(); t != eset.End(); ++t) {
		Console.WriteLine("{0}: weight = {1}",
				  t.GetTerm(), t.GetWeight());
	    }
	} catch (Exception e) {
	    Console.Error.WriteLine("Exception: " + e.ToString());
	    Environment.Exit(1);
	}
    }
コード例 #2
0
    public static void Main(string[] argv)
    {
        // We require at least two command line arguments.
        if (argv.Length < 2)
        {
            Console.Error.WriteLine("Usage: SimpleExpand PATH_TO_DATABASE QUERY [-- [DOCID...]]");
            Environment.Exit(1);
        }

        try {
            // Open the database for searching.
            Xapian.Database database = new Xapian.Database(argv[0]);

            // Start an enquire session.
            Xapian.Enquire enquire = new Xapian.Enquire(database);

            // Create an RSet to add the listed docids to.
            Xapian.RSet rset = new Xapian.RSet();

            // Combine command line arguments up to "--" with spaces between
            // them, so that simple queries don't have to be quoted at the
            // shell level.
            string query_string = argv[1];
            for (int i = 2; i < argv.Length; ++i)
            {
                if (argv[i] == "--")
                {
                    while (++i < argv.Length)
                    {
                        rset.AddDocument(Convert.ToUInt32(argv[i]));
                    }
                    break;
                }
                query_string += ' ';
                query_string += argv[i];
            }

            // Parse the query string to produce a Xapian::Query object.
            Xapian.QueryParser qp      = new Xapian.QueryParser();
            Xapian.Stem        stemmer = new Xapian.Stem("english");
            qp.SetStemmer(stemmer);
            qp.SetDatabase(database);
            qp.SetStemmingStrategy(Xapian.QueryParser.stem_strategy.STEM_SOME);
            Xapian.Query query = qp.ParseQuery(query_string);
            Console.WriteLine("Parsed query is: " + query.GetDescription());

            // Find the top 10 results for the query.
            enquire.SetQuery(query);
            Xapian.MSet matches = enquire.GetMSet(0, 10, rset);

            // Display the results.
            Console.WriteLine("{0} results found.", matches.GetMatchesEstimated());
            Console.WriteLine("Matches 1-{0}:", matches.Size());

            Xapian.MSetIterator m = matches.Begin();
            while (m != matches.End())
            {
                Console.WriteLine("{0}: {1}% docid={2} [{3}]\n",
                                  m.GetRank() + 1,
                                  m.GetPercent(),
                                  m.GetDocId(),
                                  m.GetDocument().GetData());
                ++m;
            }

            // If no relevant docids were given, invent an RSet containing the
            // top 5 matches (or all the matches if there are less than 5).
            if (rset.Empty())
            {
                int c = 5;
                Xapian.MSetIterator i = matches.Begin();
                while (c-- > 0 && i != matches.End())
                {
                    rset.AddDocument(i.GetDocId());
                    ++i;
                }
            }

            // Generate an ESet containing terms that the user might want to
            // add to the query.
            Xapian.ESet eset = enquire.GetESet(10, rset);

            Console.WriteLine(eset.Size());
            // List the terms.
            for (Xapian.ESetIterator t = eset.Begin(); t != eset.End(); ++t)
            {
                Console.WriteLine("{0}: weight = {1}",
                                  t.GetTerm(), t.GetWeight());
            }
        } catch (Exception e) {
            Console.Error.WriteLine("Exception: " + e.ToString());
            Environment.Exit(1);
        }
    }