def reload_data():
global patch, reverse_patch, uri_map, uri_patch
patch = {}
reverse_patch = {}
uri_map = {}
uri_patch = {}
graph = showconfig.getGraph()
for chan in graph.subjects(RDF.type, L9['Channel']):
for which, name in enumerate([graph.label(chan)] +
list(graph.objects(chan, L9['altName']))):
name = str(name)
uri_map[name] = chan
if name in patch:
raise ValueError("channel name %r used multiple times" % name)
for output in graph.objects(chan, L9['output']):
for addr in graph.objects(output, L9['dmxAddress']):
addrInt = int(addr)
patch[name] = addrInt
uri_patch[chan] = addrInt
if which == 0:
reverse_patch[addrInt] = name
reverse_patch[addr] = name
norm_name = name
else:
reverse_patch[name] = norm_name