def __init__(self, reader = None, writer = None, *args, **kwargs):
self.log = logging.getLogger(self.__class__.__name__)
self.log.info('initializing the store')
load_plugins()
self.__default_context = None
if "default_context" in kwargs:
self.__default_context = URIRef(kwargs["default_context"])
if reader:
if reader in __readers__:
self.reader = __readers__[reader](*args, **kwargs)
else:
raise PluginNotFoundException('The <%s> READER plugin was not found' % (reader))
else:
self.reader = RDFReader(*args, **kwargs)
if writer:
if writer in __writers__:
self.writer = __writers__[writer](self.reader, *args, **kwargs)
else:
raise PluginNotFoundException('The <%s> WRITER plugin was not found' % (reader))
else:
self.writer = RDFWriter(self.reader, *args, **kwargs)
if hasattr(self.reader, 'use_subqueries'):
self.use_subqueries = property(fget = lambda self: self.reader.use_subqueries)
self.log.info('store initialized')
def __init__(self, reader=None, writer=None, *args, **kwargs):
self.log = logging.getLogger(self.__class__.__name__)
self.log.info('initializing the store')
load_plugins()
self.__default_context = None
if "default_context" in kwargs:
self.__default_context = URIRef(kwargs["default_context"])
if reader:
if reader in __readers__:
self.reader = __readers__[reader](*args, **kwargs)
elif isinstance(reader, RDFReader):
# We've received already configured reader, use it.
self.reader = reader
else:
raise PluginNotFoundException(
'The <%s> READER plugin was not found' % (reader))
else:
self.reader = RDFReader(*args, **kwargs)
if writer:
if writer in __writers__:
self.writer = __writers__[writer](self.reader, *args, **kwargs)
elif isinstance(writer, RDFWriter):
# We've received already configured writer, use it.
self.writer = writer
else:
raise PluginNotFoundException(
'The <%s> WRITER plugin was not found' % (reader))
else:
self.writer = RDFWriter(self.reader, *args, **kwargs)
if hasattr(self.reader, 'use_subqueries'):
self.use_subqueries = property(
fget=lambda self: self.reader.use_subqueries)
self.log.info('store initialized')
class Store(object):
""" The `Store` class is comprised of a reader and a writer, getting
access to an underlying triple store. Also store specific parameters must
be handled by the class, the plugins act based on various settings.
The `Store` is also the `plugin` manager and provides convenience methods
for working with plugins.
"""
""" True if the `reader` plugin is using sub queries, False otherwise. """
use_subqueries = False
default_context = property(lambda self: self.__default_context)
def __init__(self, reader = None, writer = None, *args, **kwargs):
self.log = logging.getLogger(self.__class__.__name__)
self.log.info('initializing the store')
load_plugins()
self.__default_context = None
if "default_context" in kwargs:
self.__default_context = URIRef(kwargs["default_context"])
if reader:
if reader in __readers__:
self.reader = __readers__[reader](*args, **kwargs)
else:
raise PluginNotFoundException('The <%s> READER plugin was not found' % (reader))
else:
self.reader = RDFReader(*args, **kwargs)
if writer:
if writer in __writers__:
self.writer = __writers__[writer](self.reader, *args, **kwargs)
else:
raise PluginNotFoundException('The <%s> WRITER plugin was not found' % (reader))
else:
self.writer = RDFWriter(self.reader, *args, **kwargs)
if hasattr(self.reader, 'use_subqueries'):
self.use_subqueries = property(fget = lambda self: self.reader.use_subqueries)
self.log.info('store initialized')
def __add_default_context(self, context):
""" Return default context if context is None. """
if context == NO_CONTEXT:
context = None
elif not context:
context = self.__default_context
return context
def enable_logging(self, enable):
""" Toggle `logging` on or off. """
level = enable and logging.DEBUG or logging.NOTSET
self.log.setLevel(level)
self.reader.enable_logging(enable)
self.writer.enable_logging(enable)
def is_enable_logging(self):
""" True if `logging` is enabled, False otherwise. """
return (self.log.level == logging.DEBUG)
def close(self):
""" Close the `store`.
Both the `reader` and the `writer` plugins are closed.
See :func:`surf.plugin.writer.RDFWriter.close`
and :func:`surf.plugin.reader.RDFReader.close` methods.
"""
try:
self.reader.close()
self.log('reader closed successfully')
except Exception, e:
self.log('error on closing the reader ' + unicode(e))
try:
self.writer.close()
self.log('writer closed successfully')
except Exception, e:
self.log('error on closing the writer ' + unicode(e))
class Store(object):
""" The `Store` class is comprised of a reader and a writer, getting
access to an underlying triple store. Also store specific parameters must
be handled by the class, the plugins act based on various settings.
The `Store` is also the `plugin` manager and provides convenience methods
for working with plugins.
"""
""" True if the `reader` plugin is using sub queries, False otherwise. """
use_subqueries = False
default_context = property(lambda self: self.__default_context)
def __init__(self, reader=None, writer=None, *args, **kwargs):
self.log = logging.getLogger(self.__class__.__name__)
self.log.info('initializing the store')
load_plugins()
self.__default_context = None
if "default_context" in kwargs:
self.__default_context = URIRef(kwargs["default_context"])
if reader:
if reader in __readers__:
self.reader = __readers__[reader](*args, **kwargs)
elif isinstance(reader, RDFReader):
# We've received already configured reader, use it.
self.reader = reader
else:
raise PluginNotFoundException(
'The <%s> READER plugin was not found' % (reader))
else:
self.reader = RDFReader(*args, **kwargs)
if writer:
if writer in __writers__:
self.writer = __writers__[writer](self.reader, *args, **kwargs)
elif isinstance(writer, RDFWriter):
# We've received already configured writer, use it.
self.writer = writer
else:
raise PluginNotFoundException(
'The <%s> WRITER plugin was not found' % (reader))
else:
self.writer = RDFWriter(self.reader, *args, **kwargs)
if hasattr(self.reader, 'use_subqueries'):
self.use_subqueries = property(
fget=lambda self: self.reader.use_subqueries)
self.log.info('store initialized')
def __add_default_context(self, context):
""" Return default context if context is None. """
if context == NO_CONTEXT:
context = None
elif not context:
context = self.__default_context
return context
def enable_logging(self, enable):
""" Toggle `logging` on or off. """
level = enable and logging.DEBUG or logging.NOTSET
self.log.setLevel(level)
self.reader.enable_logging(enable)
self.writer.enable_logging(enable)
def is_enable_logging(self):
""" True if `logging` is enabled, False otherwise. """
return (self.log.level == logging.DEBUG)
def close(self):
""" Close the `store`.
Both the `reader` and the `writer` plugins are closed.
See :func:`surf.plugin.writer.RDFWriter.close`
and :func:`surf.plugin.reader.RDFReader.close` methods.
"""
try:
self.reader.close()
self.log.debug('reader closed successfully')
except Exception, e:
self.log.exception("Error on closing the reader")
try:
self.writer.close()
self.log.debug('writer closed successfully')
except Exception, e:
self.log.exception("Error on closing the writer")