Sophie: xapian-core-devel-1.0.21-1.fc13 i686

xapian-core-devel-1.0.21-1.fc13.i686.rpm

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<FONT color=#0000ff>/* quickstartexpand.cc: Simplest possible query expansion
 *
 * ----START-LICENCE----
 * Copyright 1999,2000,2001 BrightStation PLC
 * Copyright 2003,2004 Olly Betts
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
 * USA
 * -----END-LICENCE-----
 */</FONT>

<FONT color=#a020f0>#include </FONT><FONT color=#ff00ff>&lt;xapian.h&gt;</FONT>
<FONT color=#a020f0>#include </FONT><FONT color=#ff00ff>&lt;iostream&gt;</FONT>
<B><FONT color=#a52a2a>using namespace </FONT></B>std;

<B><FONT color=#2e8b57>int</FONT></B> main(<B><FONT color=#2e8b57>int</FONT></B> argc, <B><FONT color=#2e8b57>char</FONT></B> **argv)
{
    <FONT color=#0000ff>// Simplest possible options parsing: we just require two or more
    // parameters.</FONT>
    <B><FONT color=#a52a2a>if</FONT></B> (argc &lt; <FONT color=#ff00ff>3</FONT>) {
        cout &lt;&lt; <FONT color=#ff00ff>&quot;usage: &quot;</FONT> &lt;&lt; argv[<FONT color=#ff00ff>0</FONT>] &lt;&lt;
                <FONT color=#ff00ff>&quot; &lt;path to database&gt; &lt;search terms&gt; -- &lt;relevant docids&gt;&quot;</FONT> &lt;&lt;
                endl;
        exit(<FONT color=#ff00ff>1</FONT>);
    }

    <FONT color=#0000ff>// Catch any Xapian::Error exceptions thrown</FONT>
    <B><FONT color=#a52a2a>try</FONT></B> {
        <FONT color=#0000ff>// Open the database</FONT>
        Xapian::Database database(argv[<FONT color=#ff00ff>1</FONT>]);

        <FONT color=#0000ff>// Start an enquire session</FONT>
        Xapian::Enquire enquire(database);

        <FONT color=#0000ff>// Prepare the query terms</FONT>
        vector&lt;string&gt; queryterms;
        <B><FONT color=#2e8b57>int</FONT></B> optpos;
        <B><FONT color=#a52a2a>for</FONT></B> (optpos = <FONT color=#ff00ff>2</FONT>; optpos &lt; argc; optpos++) {
            <B><FONT color=#a52a2a>if</FONT></B>(string(argv[optpos]) == <FONT color=#ff00ff>&quot;--&quot;</FONT>) {
                optpos++;
                <B><FONT color=#a52a2a>break</FONT></B>;
            }
            queryterms.push_back(argv[optpos]);
        }

        <FONT color=#0000ff>// Prepare the relevant document list</FONT>
        Xapian::RSet reldocs;
        <B><FONT color=#a52a2a>for</FONT></B> (; optpos &lt; argc; optpos++) {
            Xapian::docid rdid = atoi(argv[optpos]);
            <B><FONT color=#a52a2a>if</FONT></B> (rdid != <FONT color=#ff00ff>0</FONT>) {
                reldocs.add_document(rdid);
            }
        }

        <FONT color=#0000ff>// Build the query object</FONT>
        Xapian::Query query(Xapian::Query::OP_OR, queryterms.begin(), queryterms.end());

        Xapian::MSet matches;
        <B><FONT color=#a52a2a>if</FONT></B> (query.is_defined()) {
            cout &lt;&lt; <FONT color=#ff00ff>&quot;Performing query `&quot;</FONT> &lt;&lt; query.get_description() &lt;&lt;
                    <FONT color=#ff00ff>&quot;'&quot;</FONT> &lt;&lt; endl;

            <FONT color=#0000ff>// Give the query object to the enquire session</FONT>
            enquire.set_query(query);

            <FONT color=#0000ff>// Get the top 10 results of the query</FONT>
            matches = enquire.get_mset(<FONT color=#ff00ff>0</FONT>, <FONT color=#ff00ff>10</FONT>);

            <FONT color=#0000ff>// Display the results</FONT>
            cout &lt;&lt; matches.items.size() &lt;&lt; <FONT color=#ff00ff>&quot; results found&quot;</FONT> &lt;&lt; endl;

            <B><FONT color=#a52a2a>for</FONT></B> (Xapian::MSetIterator i = matches.begin();
                 i != matches.end();
                 ++i) {
                Xapian::Document doc = i.get_document();
                cout &lt;&lt; <FONT color=#ff00ff>&quot;Document ID &quot;</FONT> &lt;&lt; *i &lt;&lt; <FONT color=#ff00ff>&quot;</FONT><FONT color=#6a5acd>\t</FONT><FONT color=#ff00ff>&quot;</FONT> &lt;&lt;
                        i.get_percent() &lt;&lt; <FONT color=#ff00ff>&quot;% [&quot;</FONT> &lt;&lt;
                        doc.get_data() &lt;&lt; <FONT color=#ff00ff>&quot;]&quot;</FONT> &lt;&lt; endl;
            }
        }

        <FONT color=#0000ff>// Put the top 5 into the rset if rset is empty</FONT>
        <B><FONT color=#a52a2a>if</FONT></B> (reldocs.empty()) {
            Xapian::MSetIterator i;
            <B><FONT color=#2e8b57>int</FONT></B> j;
            <B><FONT color=#a52a2a>for</FONT></B> (i = matches.begin(),
                 j = <FONT color=#ff00ff>0</FONT>;
                 (i != matches.end()) &amp;&amp; (j &lt; <FONT color=#ff00ff>5</FONT>);
                 ++i, ++j) {
                reldocs.add_document(*i);
            }
        }
        
        <FONT color=#0000ff>// Get the suggested expand terms</FONT>
        Xapian::ESet eterms = enquire.get_eset(<FONT color=#ff00ff>10</FONT>, reldocs);

        <FONT color=#0000ff>// Display the expand terms</FONT>
        cout &lt;&lt; eterms.size() &lt;&lt; <FONT color=#ff00ff>&quot; suggested additional terms&quot;</FONT> &lt;&lt; endl;

        <B><FONT color=#a52a2a>for</FONT></B> (Xapian::ESetIterator k = eterms.begin();
             k != eterms.end();
             ++k) {
            cout &lt;&lt; <FONT color=#ff00ff>&quot;Term `&quot;</FONT> &lt;&lt; *k &lt;&lt; <FONT color=#ff00ff>&quot;'</FONT><FONT color=#6a5acd>\t</FONT><FONT color=#ff00ff> &quot;</FONT> &lt;&lt;
                    <FONT color=#ff00ff>&quot;(weight &quot;</FONT> &lt;&lt; k.get_weight() &lt;&lt; <FONT color=#ff00ff>&quot;)&quot;</FONT> &lt;&lt; endl;
        }
    } <B><FONT color=#a52a2a>catch</FONT></B>(const Xapian::Error &amp;error) {
        cout &lt;&lt; <FONT color=#ff00ff>&quot;Exception: &quot;</FONT>  &lt;&lt; error.get_msg() &lt;&lt; endl;
    }
}
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