// Check if the current key is beyond endKey.
void BtreeCursor::checkEnd() {
if ( bucket.isNull() )
return;
int cmp = sgn( endKey.woCompare( currKey(), order ) );
if ( cmp != 0 && cmp != direction )
bucket = DiskLoc();
}
void BtreeCursor::noteLocation() {
if ( !eof() ) {
BSONObj o = currKey().getOwned();
keyAtKeyOfs = o;
locAtKeyOfs = currLoc();
}
}
bool BtreeCursor::skipOutOfRangeKeysAndCheckEnd() {
if ( !ok() ) {
return false;
}
int ret = _boundsIterator->advance( currKey() );
if ( ret == -2 ) {
bucket = DiskLoc();
return false;
}
else if ( ret == -1 ) {
++_nscanned;
return false;
}
++_nscanned;
advanceTo( currKey(), ret, _boundsIterator->after(), _boundsIterator->cmp(), _boundsIterator->inc() );
return true;
}
void ImageTextEditor::updateText()
{
storeText();
newlang->setText(languages->currentText());
newkey->setText(keys->currentText());
QString t = image.text(currKey(),currLang());
text->setText(t);
}
bool BtreeCursor::currentMatches( MatchDetails* details ) {
// If currKey() might not match the specified _bounds, check whether or not it does.
if ( !_boundsMustMatch && _bounds && !_bounds->matchesKey( currKey() ) ) {
// If the key does not match _bounds, it does not match the query.
return false;
}
// Forward to the base class implementation, which may utilize a Matcher.
return Cursor::currentMatches( details );
}
// Check if the current key is beyond endKey.
void BtreeCursor::checkEnd() {
if ( bucket.isNull() )
return;
if ( !endKey.isEmpty() ) {
int cmp = sgn( endKey.woCompare( currKey(), _order ) );
if ( ( cmp != 0 && cmp != _direction ) ||
( cmp == 0 && !_endKeyInclusive ) )
bucket = DiskLoc();
}
}
// Check if the current key is beyond endKey.
void BtreeCursor::checkEnd() {
if (!ok()) { return; }
if ( !endKey.isEmpty() ) {
int cmp = sgn( endKey.woCompare( currKey(), _order ) );
if ( ( cmp != 0 && cmp != _direction ) || ( cmp == 0 && !_endKeyInclusive ) ) {
_hitEnd = true;
}
}
}
bool ClientCursor::getFieldsDotted( const string& name, BSONElementSet &ret ) {
map<string,int>::const_iterator i = _indexedFields.find( name );
if ( i == _indexedFields.end() ){
current().getFieldsDotted( name , ret );
return false;
}
int x = i->second;
BSONObjIterator it( currKey() );
while ( x && it.more() )
it.next();
assert( x == 0 );
ret.insert( it.next() );
return true;
}
void IntervalBtreeCursor::relocateEnd() {
if ( eof() ) {
return;
}
// If the current key is above the upper bound ...
int32_t cmp = currKey().woCompare( _upperBound, _ordering, false );
if ( cmp > 0 || ( cmp == 0 && !_upperBoundInclusive ) ) {
// ... then iteration is complete.
_curr.bucket.Null();
return;
}
// Otherwise, relocate _end.
_end = locateKey( _upperBound, _upperBoundInclusive );
skipUnused( &_end );
}
BSONElement ClientCursor::getFieldDotted( const string& name , bool * fromKey ) {
map<string,int>::const_iterator i = _indexedFields.find( name );
if ( i == _indexedFields.end() ) {
if ( fromKey )
*fromKey = false;
return current().getFieldDotted( name );
}
int x = i->second;
BSONObjIterator it( currKey() );
while ( x && it.more() ) {
it.next();
x--;
}
assert( x == 0 );
if ( fromKey )
*fromKey = true;
return it.next();
}
// Fill _results with all of the results in the annulus defined by _innerRadius and
// _outerRadius. If no results are found, grow the annulus and repeat until success (or
// until the edge of the world).
void S2NearIndexCursor::fillResults() {
verify(_results.empty());
if (_innerRadius >= _outerRadius) {
return;
}
if (_innerRadius > _maxDistance) {
return;
}
// We iterate until 1. our search radius is too big or 2. we find results.
do {
// Some of these arguments are opaque, look at the definitions of the involved classes.
FieldRangeSet frs(_descriptor->parentNS().c_str(), makeFRSObject(), false, false);
shared_ptr<FieldRangeVector> frv(new FieldRangeVector(frs, _specForFRV, 1));
scoped_ptr<BtreeCursor> cursor(BtreeCursor::make(nsdetails(_descriptor->parentNS()),
_descriptor->getOnDisk(), frv, 0, 1));
// The cursor may return the same obj more than once for a given
// FRS, so we make sure to only consider it once in any given annulus.
//
// We don't want this outside of the 'do' loop because the covering
// for an annulus may return an object whose distance to the query
// point is actually contained in a subsequent annulus. If we
// didn't consider every object in a given annulus we might miss
// the point.
//
// We don't use a global 'seen' because we get that by requiring
// the distance from the query point to the indexed geo to be
// within our 'current' annulus, and I want to dodge all yield
// issues if possible.
unordered_set<DiskLoc, DiskLoc::Hasher> seen;
LOG(1) << "looking at annulus from " << _innerRadius << " to " << _outerRadius << endl;
LOG(1) << "Total # returned: " << _stats._numReturned << endl;
// Do the actual search through this annulus.
for (; cursor->ok(); cursor->advance()) {
// Don't bother to look at anything we've returned.
if (_returned.end() != _returned.find(cursor->currLoc())) {
++_stats._returnSkip;
continue;
}
++_stats._nscanned;
if (seen.end() != seen.find(cursor->currLoc())) {
++_stats._btreeDups;
continue;
}
// Get distance interval from our query point to the cell.
// If it doesn't overlap with our current shell, toss.
BSONObj currKey(cursor->currKey());
BSONObjIterator it(currKey);
BSONElement geoKey;
for (int i = 0; i <= _nearFieldIndex; ++i) {
geoKey = it.next();
}
S2Cell keyCell = S2Cell(S2CellId::FromString(geoKey.String()));
if (!_annulus.MayIntersect(keyCell)) {
++_stats._keyGeoSkip;
continue;
}
// We have to add this document to seen *AFTER* the key intersection test.
// A geometry may have several keys, one of which may be in our search shell and one
// of which may be outside of it. We don't want to ignore a document just because
// one of its covers isn't inside this annulus.
seen.insert(cursor->currLoc());
// At this point forward, we will not examine the document again in this annulus.
const BSONObj& indexedObj = cursor->currLoc().obj();
// Match against indexed geo fields.
++_stats._geoMatchTested;
size_t geoFieldsMatched = 0;
// See if the object actually overlaps w/the geo query fields.
for (size_t i = 0; i < _indexedGeoFields.size(); ++i) {
BSONElementSet geoFieldElements;
indexedObj.getFieldsDotted(_indexedGeoFields[i].getField(), geoFieldElements,
false);
if (geoFieldElements.empty()) {
continue;
}
bool match = false;
for (BSONElementSet::iterator oi = geoFieldElements.begin();
!match && (oi != geoFieldElements.end()); ++oi) {
if (!oi->isABSONObj()) {
continue;
}
const BSONObj &geoObj = oi->Obj();
GeometryContainer geoContainer;
uassert(16762, "ill-formed geometry: " + geoObj.toString(),
geoContainer.parseFrom(geoObj));
match = _indexedGeoFields[i].satisfiesPredicate(geoContainer);
}
if (match) {
++geoFieldsMatched;
}
}
if (geoFieldsMatched != _indexedGeoFields.size()) {
continue;
}
// Get all the fields with that name from the document.
BSONElementSet geoFieldElements;
indexedObj.getFieldsDotted(_nearQuery.field, geoFieldElements, false);
if (geoFieldElements.empty()) {
continue;
}
++_stats._inAnnulusTested;
double minDistance = 1e20;
// Look at each field in the document and take the min. distance.
for (BSONElementSet::iterator oi = geoFieldElements.begin();
oi != geoFieldElements.end(); ++oi) {
if (!oi->isABSONObj()) {
continue;
}
double dist = distanceTo(oi->Obj());
minDistance = min(dist, minDistance);
}
// We could be in an annulus, yield, add new points closer to
// query point than the last point we returned, then unyield.
// This would return points out of order.
if (minDistance < _returnedDistance) {
continue;
}
// If the min. distance satisfies our distance criteria
if (minDistance >= _innerRadius && minDistance < _outerRadius) {
// The result is valid. We have to de-dup ourselves here.
if (_returned.end() == _returned.find(cursor->currLoc())) {
_results.push(Result(cursor->currLoc(), cursor->currKey(),
minDistance));
}
}
}
if (_results.empty()) {
LOG(1) << "results empty!\n";
_radiusIncrement *= 2;
nextAnnulus();
} else if (_results.size() < 300) {
_radiusIncrement *= 2;
} else if (_results.size() > 600) {
_radiusIncrement /= 2;
}
} while (_results.empty()
&& _innerRadius < _maxDistance
&& _innerRadius < _outerRadius);
LOG(1) << "Filled shell with " << _results.size() << " results" << endl;
}
void ImageTextEditor::storeText()
{
if ( currKey().length() > 0 ) {
image.setText(currKey(),currLang(),currText());
}
}
void ImageTextEditor::removeText()
{
image.setText(currKey(),currLang(),QString::null);
}