Minor - P4 When the DBObject.keySet() rerturns a Set<String> that is an instance of StringRangeSet, performing keySet.contains("FOO") on it will throw NumberFormatException.
Caused due to the contains implementation that assume input is a valid number:
@Override
public boolean contains(final Object o) {
if (!(o instanceof String)) {
return false;
}
int i = Integer.parseInt((String) o);
return i >= 0 && i < size();
}
Using a non-number contains can be a valid use case when recursively iterating through a DBObject, trying to remove all "_class" fields that spring-data-mongo generate:
private void removeClassFields(DBObject dbObject){ Set<String> keys = dbObject.keySet(); if (keys.contains("_class")){ dbObject.removeField("_class"); } for (String key : keys) { if (dbObject.get(key) instanceof DBObject){ removeClassFields((DBObject) dbObject.get(key)); } } }