Status LogBuilder::addToSetsWithNewFieldName(StringData name, const mutablebson::Element val) {
mutablebson::Element elemToSet = _logRoot.getDocument().makeElementWithNewFieldName(name, val);
if (!elemToSet.ok())
return Status(ErrorCodes::InternalError,
str::stream() << "Could not create new '" << name
<< "' element from existing element '"
<< val.getFieldName()
<< "' of type "
<< typeName(val.getType()));
return addToSets(elemToSet);
}
Status createPathAt(const FieldRef& prefix,
size_t idxFound,
mutablebson::Element elemFound,
mutablebson::Element newElem) {
Status status = Status::OK();
// Sanity check that 'idxField' is an actual part.
const size_t size = prefix.numParts();
if (idxFound >= size) {
return Status(ErrorCodes::BadValue, "index larger than path size");
}
mutablebson::Document& doc = elemFound.getDocument();
// If we are creating children under an array and a numeric index is next, then perhaps
// we need padding.
size_t i = idxFound;
bool inArray = false;
if (elemFound.getType() == mongol::Array) {
size_t newIdx = 0;
if (!isNumeric(prefix.getPart(idxFound), &newIdx)) {
return Status(ErrorCodes::InvalidPath, "Array require numeric fields");
}
status = maybePadTo(&elemFound, newIdx);
if (!status.isOK()) {
return status;
}
// If there is a next field, that would be an array element. We'd like to mark that
// field because we create array elements differently than we do regular objects.
if (++i < size) {
inArray = true;
}
}
// Create all the remaining parts but the last one.
for (; i < size - 1; i++) {
mutablebson::Element elem = doc.makeElementObject(prefix.getPart(i));
if (!elem.ok()) {
return Status(ErrorCodes::InternalError, "cannot create path");
}
// If this field is an array element, we wrap it in an object (because array
// elements are wraped in { "N": <element> } objects.
if (inArray) {
// TODO pass empty StringData to makeElementObject, when that's supported.
mutablebson::Element arrayObj = doc.makeElementObject("" /* it's an array */);
if (!arrayObj.ok()) {
return Status(ErrorCodes::InternalError, "cannot create item on array");
}
status = arrayObj.pushBack(elem);
if (!status.isOK()) {
return status;
}
status = elemFound.pushBack(arrayObj);
if (!status.isOK()) {
return status;
}
inArray = false;
} else {
status = elemFound.pushBack(elem);
if (!status.isOK()) {
return status;
}
}
elemFound = elem;
}
// Attach the last element. Here again, if we're in a field that is an array element,
// we wrap it in an object first.
if (inArray) {
// TODO pass empty StringData to makeElementObject, when that's supported.
mutablebson::Element arrayObj = doc.makeElementObject("" /* it's an array */);
if (!arrayObj.ok()) {
return Status(ErrorCodes::InternalError, "cannot create item on array");
}
status = arrayObj.pushBack(newElem);
if (!status.isOK()) {
return status;
}
status = elemFound.pushBack(arrayObj);
if (!status.isOK()) {
return status;
}
} else {
status = elemFound.pushBack(newElem);
if (!status.isOK()) {
return status;
}
}
return Status::OK();
}