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Stems with unique parent must be in db too so that one can search on stem (which is not a term)

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This commit is contained in:
dockes 2006-09-19 14:30:40 +00:00
parent 3e2bccd259
commit dff7753f7f
1 changed files with 10 additions and 10 deletions
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20
src/rcldb/stemdb.cpp
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@ -1,5 +1,5 @@
#ifndef lint
static char rcsid[] = "@(#$Id: stemdb.cpp,v 1.2 2006-05-02 09:49:06 dockes Exp $ (C) 2005 J.F.Dockes";
static char rcsid[] = "@(#$Id: stemdb.cpp,v 1.3 2006-09-19 14:30:39 dockes Exp $ (C) 2005 J.F.Dockes";
#endif
/**
@ -168,14 +168,10 @@ bool createDb(Xapian::Database& xdb, const string& dbdir, const string& lang)
} else {
// Changing stems
++stemdiff;
if (derivs.size() == 1) {
// Exactly one term stems to this. Check for the case where
// the stem itself exists as a term. The code above would not
// have inserted anything in this case.
if (xdb.term_exists(stem))
derivs.push_back(stem);
}
if (derivs.size() > 1) {
// We need an entry even if there is only one derivative
// so that it is possible to search by entering the stem
// even if it doesnt exist as a term
if (derivs.size() >= 1) {
// Previous stem has multiple derivatives. Enter in db
++stemmultiple;
Xapian::Document newdocument;
@ -237,6 +233,8 @@ list<string> stemExpand(const string& dbdir, const string& lang,
}
Xapian::Document doc = sdb.get_document(*did);
string data = doc.get_data();
// Build expansion list from database data
// No need for a conftree, but we need to massage the data a little
string::size_type pos = data.find_first_of("=");
++pos;
@ -244,8 +242,10 @@ list<string> stemExpand(const string& dbdir, const string& lang,
if (pos == string::npos || pos1 == string::npos ||pos1 <= pos) { // ??
explist.push_back(term);
return explist;
}
}
stringToStrings(data.substr(pos, pos1-pos), explist);
// If the user term itself is not in the list, add it.
if (find(explist.begin(), explist.end(), term) == explist.end()) {
explist.push_back(term);
}