def _helper(meta_tree, query_func, selected_key_trails, *curr_key_trail):
result = query_func(meta_tree, *curr_key_trail)
if result:
selected_key_trails.add(tuple(curr_key_trail))
node = metatree.get_node(meta_tree, *curr_key_trail)
for key in node.keys():
_helper(meta_tree, query_func, selected_key_trails, *(curr_key_trail + (key,)))
def index_children(meta_tree, field_name, *key_trail):
def _helper(node, field_name):
meta_data = node.metadata
if field_name in meta_data:
return helpers.listify(meta_data[field_name])
else:
child_agg = None
for key in node.keys():
child_ret = _helper(node[key], field_name)
if child_ret is not None:
if child_agg is None:
child_agg = []
child_agg += child_ret
return helpers.listify(child_agg)
node = get_node(meta_tree, *key_trail)
ret = None
for key in node.keys():
child_agg = _helper(node[key], field_name)
if child_agg is not None:
if ret is None:
ret = []
ret += child_agg
return helpers.listify(ret)
