private BSONObject updateDocument(BSONObject document, BSONObject updateQuery, Integer matchPos)
throws MongoServerException {
synchronized (document) {
// copy document
BSONObject oldDocument = new BasicBSONObject();
cloneInto(oldDocument, document);
BSONObject newDocument = calculateUpdateDocument(document, updateQuery, matchPos, false);
if (!newDocument.equals(oldDocument)) {
for (Index index : indexes) {
index.checkUpdate(oldDocument, newDocument);
}
for (Index index : indexes) {
index.updateInPlace(oldDocument, newDocument);
}
long oldSize = Utils.calculateSize(oldDocument);
long newSize = Utils.calculateSize(newDocument);
dataSize.addAndGet(newSize - oldSize);
// only keep fields that are also in the updated document
Set<String> fields = new HashSet<String>(document.keySet());
fields.removeAll(newDocument.keySet());
for (String key : fields) {
document.removeField(key);
}
// update the fields
for (String key : newDocument.keySet()) {
if (key.contains(".")) {
throw new MongoServerException(
"illegal field name. must not happen as it must be catched by the driver");
}
document.put(key, newDocument.get(key));
}
}
return oldDocument;
}
}
