Returns if no namespaces exist. Note that the container size does not change if namespaces are deleted. This function is mainly used to decide namespaces need to be considered in query optimizations. @return result of check
()
| 77 | * @return result of check |
| 78 | */ |
| 79 | public boolean isEmpty() { |
| 80 | return uris.isEmpty(); |
| 81 | } |
| 82 | |
| 83 | /** |
| 84 | * Returns the number of namespaces that have been stored so far. |