#ifndef lint
static char rcsid[] = "@(#$Id: filtseq.cpp,v 1.4 2008-10-13 11:46:06 dockes Exp $ (C) 2005 J.F.Dockes";
#endif
/*
* 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.
*/
#include <algorithm>
#include "debuglog.h"
#include "filtseq.h"
using std::string;
static bool filter(const DocSeqFiltSpec& fs, const Rcl::Doc *x)
{
// Compare using each criterion in term. We're doing an or:
// 1st ok ends
for (unsigned int i = 0; i < fs.crits.size(); i++) {
switch (fs.crits[i]) {
case DocSeqFiltSpec::DSFS_MIMETYPE:
LOGDEB1((" MIMETYPE\n"));
if (x->mimetype == fs.values[i])
return 1;
}
}
// Did all comparisons
return 0;
}
DocSeqFiltered::DocSeqFiltered(RefCntr<DocSequence> iseq,
DocSeqFiltSpec &filtspec,
const std::string &t)
: DocSeqModifier(t, iseq), m_spec(filtspec)
{
}
bool DocSeqFiltered::setFiltSpec(DocSeqFiltSpec &filtspec)
{
m_spec = filtspec;
m_dbindices.clear();
return true;
}
bool DocSeqFiltered::getDoc(int idx, Rcl::Doc &doc, string *)
{
LOGDEB1(("DocSeqFiltered: fetching %d\n", idx));
if (idx >= (int)m_dbindices.size()) {
// Have to fetch xapian docs and filter until we get enough or
// fail
m_dbindices.reserve(idx+1);
// First backend seq doc we fetch is the one after last stored
int backend_idx = m_dbindices.size() > 0 ? m_dbindices.back() + 1 : 0;
// Loop until we get enough docs
Rcl::Doc tdoc;
int i = 0;
while (idx >= (int)m_dbindices.size()) {
if (!m_seq->getDoc(backend_idx, tdoc))
return false;
if (filter(m_spec, &tdoc)) {
m_dbindices.push_back(backend_idx);
}
backend_idx++;
}
doc = tdoc;
} else {
// The corresponding backend indice is already known
if (!m_seq->getDoc(m_dbindices[idx], doc))
return false;
}
return true;
}