bool WorkingSetMember::getFieldDotted(const string& field, BSONElement* out) const {
// If our state is such that we have an object, use it.
if (hasObj()) {
*out = obj.getFieldDotted(field);
return true;
}
// Our state should be such that we have index data/are covered.
for (size_t i = 0; i < keyData.size(); ++i) {
BSONObjIterator keyPatternIt(keyData[i].indexKeyPattern);
BSONObjIterator keyDataIt(keyData[i].keyData);
while (keyPatternIt.more()) {
BSONElement keyPatternElt = keyPatternIt.next();
verify(keyDataIt.more());
BSONElement keyDataElt = keyDataIt.next();
if (field == keyPatternElt.fieldName()) {
*out = keyDataElt;
return true;
}
}
}
return false;
}
virtual ElementIterator* allocateIterator(const ElementPath* path) const {
BSONObjIterator keyPatternIt(_keyPattern);
BSONObjIterator keyDataIt(_key);
// Skip the "2d"-indexed stuff. We might have a diff. predicate over that field
// and those can't be covered.
keyPatternIt.next();
keyDataIt.next();
// Look in the key.
while (keyPatternIt.more()) {
BSONElement keyPatternElt = keyPatternIt.next();
verify(keyDataIt.more());
BSONElement keyDataElt = keyDataIt.next();
if (path->fieldRef().equalsDottedField(keyPatternElt.fieldName())) {
if (Array == keyDataElt.type()) {
return new SimpleArrayElementIterator(keyDataElt, true);
}
else {
return new SingleElementElementIterator(keyDataElt);
}
}
}
// All else fails, fetch.
*_fetched = true;
return new BSONElementIterator(path, _loc.obj());
}
virtual ElementIterator* allocateIterator(const ElementPath* path) const {
BSONObjIterator keyPatternIt(_keyPattern);
BSONObjIterator keyDataIt(_key);
// Look in the key.
while (keyPatternIt.more()) {
BSONElement keyPatternElt = keyPatternIt.next();
verify(keyDataIt.more());
BSONElement keyDataElt = keyDataIt.next();
if (path->fieldRef().equalsDottedField(keyPatternElt.fieldName())) {
if (Array == keyDataElt.type()) {
return new SimpleArrayElementIterator(keyDataElt, true);
}
else {
return new SingleElementElementIterator(keyDataElt);
}
}
}
// All else fails, fetch.
*_fetched = true;
return new BSONElementIterator(path, _loc.obj());
}