diff options
Diffstat (limited to 'creactistore/_templates/lib/rdflib/plugin.py')
| -rw-r--r-- | creactistore/_templates/lib/rdflib/plugin.py | 159 |
1 files changed, 0 insertions, 159 deletions
diff --git a/creactistore/_templates/lib/rdflib/plugin.py b/creactistore/_templates/lib/rdflib/plugin.py deleted file mode 100644 index 9f7dc1b..0000000 --- a/creactistore/_templates/lib/rdflib/plugin.py +++ /dev/null @@ -1,159 +0,0 @@ -""" -Plugin support for rdf. - -There are a number of plugin points for rdf: parser, serializer, -store, query processor, and query result. Plugins can be registered -either through setuptools entry_points or by calling -rdf.plugin.register directly. - -If you have a package that uses a setuptools based setup.py you can add the following to your setup:: - - entry_points = { - 'rdf.plugins.parser': [ - 'nt = rdf.plugins.parsers.nt:NTParser', - ], - 'rdf.plugins.serializer': [ - 'nt = rdf.plugins.serializers.NTSerializer:NTSerializer', - ], - } - -See the `setuptools dynamic discovery of services and plugins`__ for more information. - -.. __: http://peak.telecommunity.com/DevCenter/setuptools#dynamic-discovery-of-services-and-plugins - -""" - -from rdflib.store import Store -from rdflib.parser import Parser -from rdflib.serializer import Serializer -from rdflib.query import ResultParser, ResultSerializer -from rdflib.exceptions import Error - -__all__ = ['register', 'get', 'plugins', 'PluginException', 'Plugin', 'PKGPlugin'] - -entry_points = {'rdf.plugins.store': Store, - 'rdf.plugins.serializer': Serializer, - 'rdf.plugins.parser': Parser, - 'rdf.plugins.resultparser': ResultParser, - 'rdf.plugins.resultserializer': ResultSerializer, - } - -_plugins = {} - - -class PluginException(Error): - pass - - -class Plugin(object): - - def __init__(self, name, kind, module_path, class_name): - self.name = name - self.kind = kind - self.module_path = module_path - self.class_name = class_name - self._class = None - - def getClass(self): - if self._class is None: - module = __import__(self.module_path, globals(), locals(), [""]) - self._class = getattr(module, self.class_name) - return self._class - - -class PKGPlugin(Plugin): - - def __init__(self, name, kind, ep): - self.name = name - self.kind = kind - self.ep = ep - self._class = None - - def getClass(self): - if self._class is None: - self._class = self.ep.load() - return self._class - - -def register(name, kind, module_path, class_name): - """ - Register the plugin for (name, kind). The module_path and - class_name should be the path to a plugin class. - """ - p = Plugin(name, kind, module_path, class_name) - _plugins[(name, kind)] = p - - -def get(name, kind): - """ - Return the class for the specified (name, kind). Raises a - PluginException if unable to do so. - """ - try: - p = _plugins[(name, kind)] - except KeyError, e: - raise PluginException("No plugin registered for (%s, %s)" % (name, kind)) - return p.getClass() - - -try: - from pkg_resources import iter_entry_points -except ImportError: - pass # TODO: log a message -else: - # add the plugins specified via pkg_resources' EntryPoints. - for entry_point, kind in entry_points.iteritems(): - for ep in iter_entry_points(entry_point): - _plugins[(ep.name, kind)] = PKGPlugin(ep.name, kind, ep) - - -def plugins(name=None, kind=None): - """ - A generator of the plugins. - - Pass in name and kind to filter... else leave None to match all. - """ - for p in _plugins.values(): - if (name is None or name==p.name) and (kind is None or kind==p.kind): - yield p - -register('default', Store, - 'rdflib.plugins.memory', 'IOMemory') -register('IOMemory', Store, - 'rdflib.plugins.memory', 'IOMemory') -register('Sleepycat', Store, - 'rdflib.plugins.sleepycat', 'Sleepycat') - -register('xml', Serializer, - 'rdflib.plugins.serializers.rdfxml', 'XMLSerializer') -register('n3', Serializer, - 'rdflib.plugins.serializers.n3','N3Serializer') -register('turtle', Serializer, - 'rdflib.plugins.serializers.turtle', 'TurtleSerializer') -register('nt', Serializer, - 'rdflib.plugins.serializers.nt', 'NTSerializer') -register('pretty-xml', Serializer, - 'rdflib.plugins.serializers.rdfxml', 'PrettyXMLSerializer') -register('trix', Serializer, - 'rdflib.plugins.serializers.trix', 'TriXSerializer') -register("nquads", Serializer, - 'rdflib.plugins.serializers.nquads', 'NQuadsSerializer') - -register('application/rdf+xml', Parser, - 'rdflib.plugins.parsers.rdfxml', 'RDFXMLParser') -register('text/html', Parser, - 'rdflib.plugins.parsers.rdfa', 'RDFaParser') -register('application/xhtml+xml', Parser, - 'rdflib.plugins.parsers.rdfa', 'RDFaParser') -register('xml', Parser, - 'rdflib.plugins.parsers.rdfxml', 'RDFXMLParser') -register('n3', Parser, - 'rdflib.plugins.parsers.notation3', 'N3Parser') -register('nt', Parser, - 'rdflib.plugins.parsers.nt', 'NTParser') -register('trix', Parser, - 'rdflib.plugins.parsers.trix', 'TriXParser') -register('rdfa', Parser, - 'rdflib.plugins.parsers.rdfa', 'RDFaParser') - -register("nquads", Parser, "rdflib.plugins.parsers.nquads", "NQuadsParser") |