Part of bzrlib.graph View In Hierarchy
The providers are queries in the order of the provided parent_providers.
| Method | __init__ | Undocumented |
| Method | __repr__ | Undocumented |
| Method | get_parent_map | Get a mapping of keys => parents |
A dictionary is returned with an entry for each key present in this source. If this source doesn't have information about a key, it should not include an entry.
[NULL_REVISION] is used as the parent of the first user-committed revision. Its parent list is empty.
| Parameters | keys | An iterable returning keys to check (eg revision_ids) |
| Returns | A dictionary mapping each key to its parents | |