def map_property_value(value):
if hasattr(value, "subject"):
# If value has subject attribute, this must be Resource,
# take its subject.
return value.subject
if not hasattr(value, "__iter__"):
return value_to_rdf(value)
else:
values = []
for v in value:
if hasattr(v, "subject"):
values.append(v.subject)
else:
values.append(value_to_rdf(v))
return values
def test_decimal_to_rdf():
"""
Test conversion from decimal.Decimal to Literal.
"""
v = value_to_rdf(decimal.Decimal("12.34"))
assert type(v) == Literal
def test_decimal_to_rdf():
"""
Test conversion from decimal.Decimal to Literal.
"""
v = value_to_rdf(decimal.Decimal("12.34"))
assert type(v) == Literal
def map_property_value(value):
if hasattr(value, "subject"):
# If value has subject attribute, this must be Resource,
# take its subject.
return value.subject
if not hasattr(value, "__iter__"):
return value_to_rdf(value)
else:
values = []
for v in value:
if hasattr(v, "subject"):
values.append(v.subject)
else:
values.append(value_to_rdf(v))
return values
def get_by(self, **kwargs):
""" Add filter conditions.
Arguments are expected in form::
foaf_name = "John"
Multiple arguments are supported.
An example that retrieves all persons named "John Smith"::
FoafPerson = session.get_class(surf.ns.FOAF.Person)
for person in FoafPerson.get_by(foaf_name = "John", foaf_surname = "Smith"):
print person.subject
"""
params = self._params.copy()
# Don't overwrite existing get_by parameters, just append new ones.
# Overwriting get_by params would cause resource.some_attr.get_by()
# to work incorrectly.
params.setdefault("get_by", [])
for name, value in kwargs.items():
attr, direct = attr2rdf(name)
if hasattr(value, "subject"):
# If value has a subject attribute, this must be a Resource,
# take its subject.
value = value.subject
elif not isinstance(value, basestring) and hasattr(
value, "__iter__"):
# Map alternatives
value = [
hasattr(val, "subject") and val.subject
or value_to_rdf(val) for val in value
]
else:
value = value_to_rdf(value)
params["get_by"].append((attr, value, direct))
return ResultProxy(params)
def get_by(self, **kwargs):
""" Add filter conditions.
Arguments are expected in form::
foaf_name = "John"
Multiple arguments are supported.
An example that retrieves all persons named "John Smith"::
FoafPerson = session.get_class(surf.ns.FOAF.Person)
for person in FoafPerson.get_by(foaf_name = "John", foaf_surname = "Smith"):
print person.subject
"""
params = self.__params.copy()
# Don't overwrite existing get_by parameters, just append new ones.
# Overwriting get_by params would cause resource.some_attr.get_by()
# to work incorrectly.
params.setdefault("get_by", [])
for name, value in kwargs.items():
attr, direct = attr2rdf(name)
if hasattr(value, "subject"):
# If value has a subject attribute, this must be a Resource,
# take its subject.
value = value.subject
elif hasattr(value, "__iter__"):
# Map alternatives
value = map(lambda val: hasattr(val, "subject")
and val.subject
or value_to_rdf(val),
value)
else:
value = value_to_rdf(value)
params["get_by"].append((attr, value, direct))
return ResultProxy(params)
def to_rdf(cls, value):
""" Convert any value to it's appropriate `rdflib` construct. """
if hasattr(value, 'subject'):
return value.subject
return value_to_rdf(value)
def test_decimal_to_rdf(self):
""" Test conversion from decimal.Decimal to Literal. """
import decimal
v = value_to_rdf(decimal.Decimal("12.34"))
self.assertEqual(type(v), Literal)
def to_rdf(cls, value):
""" Convert any value to it's appropriate `rdflib` construct. """
if hasattr(value, 'subject'):
return value.subject
return value_to_rdf(value)
def test_decimal_to_rdf(self):
""" Test conversion from decimal.Decimal to Literal. """
import decimal
v = value_to_rdf(decimal.Decimal("12.34"))
self.assertEqual(type(v), Literal)
