1 # Licensed to the Apache Software Foundation (ASF) under one or more
2 # contributor license agreements. See the NOTICE file distributed with
3 # this work for additional information regarding copyright ownership.
4 # The ASF licenses this file to You under the Apache License, Version 2.0
5 # (the "License"); you may not use this file except in compliance with
6 # the License. You may obtain a copy of the License at
8 # http://www.apache.org/licenses/LICENSE-2.0
10 # Unless required by applicable law or agreed to in writing, software
11 # distributed under the License is distributed on an "AS IS" BASIS,
12 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 # See the License for the specific language governing permissions and
14 # limitations under the License.
16 from .location import LiteralLocation, UriLocation
17 from .literal import LiteralLoader
18 from .uri import UriTextLoader
21 class LoaderSource(object):
23 Base class for ARIA loader sources.
25 Loader sources provide appropriate :class:`Loader` instances for locations.
28 def get_loader(self, context, location, origin_location):
29 raise NotImplementedError
32 class DefaultLoaderSource(LoaderSource):
34 The default ARIA loader source will generate a :class:`UriTextLoader` for
35 :class:`UriLocation` and a :class:`LiteralLoader` for a :class:`LiteralLocation`.
38 def get_loader(self, context, location, origin_location):
39 if isinstance(location, UriLocation):
40 return UriTextLoader(context, location, origin_location)
41 elif isinstance(location, LiteralLocation):
42 return LiteralLoader(location)
44 return super(DefaultLoaderSource, self).get_loader(context, location, origin_location)