def __init__(self, filename=None):
"""Initialize Handler object. Input - path to xtm file
(filename=None) - if xtm file exists, then parse it, otherwise create new TopicMap
"""
if filename and os.path.exists(filename):
parser = Parser()
self._tm = parser.parse(filename)
else:
self._tm = TopicMap("0")
self._filename = filename
def createTopicMap(self, id):
"""Return new TopicMap objct with given id"""
return TopicMap(id)
def _parse_topicMap(self, tmNode):
"""parse topicMap node -> TopicMap"""
id = tmNode.getAttribute("id")
topicMap = TopicMap(id, self._encoding)
self._addChild(topicMap, tmNode)
return topicMap
