def serialize_prop(self, prop, value):
"""Serializes `Relation` and `OrderedRelation` references as a prefix.
For all other properties the super method is called as a fallback.
"""
if type(prop) == NestedProperty:
for _, item in iterate(value):
return self.serialize(item)
serialized = super(JsonSerializer, self).serialize_prop(prop, value)
if type(prop) == Relation or type(prop) == OrderedRelation:
props = list()
for _, item in iterate(value):
from .model import Relationship
if isinstance(item, Relationship):
item = item.model
props.append(self.ori_uri(item))
if len(props) == 1:
return props[0]
return props
return serialized
def inner(model):
# Prevent circular recursion
if model in rels_list:
return
rels_list.append(model)
for _, prop in iterate(model.values.items()):
if isinstance(prop, Model) or isinstance(prop, Relationship):
inner(prop)
def inner(model):
identifier = model.source_iri
# Prevent circular recursion
if identifier in rels.keys():
return
rels[identifier] = model
for _, prop in iterate(model.values.items()):
if isinstance(prop, Model) or isinstance(prop, Relationship):
inner(prop)
def start(self, *args, **kwargs):
"""Start loading of a single item.
This method is called by the transformer and expects args to
contain the output of the transformer as a tuple.
Kwargs should contain the ``source_definition`` dict.
:returns: the output of :py:meth:`~BaseTransformer.transform_item`
"""
self.source_definition = kwargs['source_definition']
for _, item in iterate(args):
self.post_processing(item)
self.load_item(item)
def run(self, *args, **kwargs):
"""Start loading of a single item.
This method is called by the transformer and expects args to
contain the output of the transformer as a tuple.
Kwargs should contain the ``source_definition`` dict.
:returns: the output of :py:meth:`~BaseTransformer.transform_item`
"""
self.source_definition = kwargs['source_definition']
for _, item in iterate(args):
self.post_processing(item)
self.load_item(item)
def properties(self, props=True, rels=True, parent=False):
""" Returns namespaced properties with their inflated values """
props_list = list()
for name, prop in iterate({k: v for k, v in self.values.items() if k[0:1] != '_'}):
if not parent and name == 'parent':
continue
definition = self.definition(name)
if not definition:
continue
if (props and not isinstance(prop, Model)) or \
(rels and (isinstance(prop, Model) or isinstance(prop, Relationship))):
props_list.append((self.serializer.uri_format(definition), prop,)) # pylint: disable=no-member
return props_list
def properties(self, props=True, rels=True):
""" Returns namespaced properties with their inflated values """
props_list = list()
for name, prop in iterate(
{k: v
for k, v in self.values.items() if k[0:1] != '_'}):
definition = self.definition(name)
if not definition:
continue
if (props and not isinstance(prop, Model)) or \
(rels and (isinstance(prop, Model) or isinstance(prop, Relationship))):
props_list.append((
self.serializer.uri_format(definition),
prop,
)) # pylint: disable=no-member
return props_list
def serialize_prop(self, prop, value):
"""Serializes `Relation` and `OrderedRelation` as a short identifier when they are Relationships.
For Individuals, the compact or absolute IRI of the label is returned.
For all other properties the super method is called as a fallback.
"""
if type(prop) == Relation or type(prop) == OrderedRelation:
props = list()
for _, item in iterate(value):
from .model import Relationship
if isinstance(item, Relationship):
item = item.model
props.append(self.ori_uri(item))
if len(props) == 1:
return props[0]
return props
return super(PostgresSerializer, self).serialize_prop(prop, value)
def start(self, *args, **kwargs):
"""Start enrichment of a single item.
This method is called by the transformer or by another enricher
and expects args to contain a transformed (and possibly enriched)
item. Kwargs should contain the ``source_definition`` dict.
:returns: the output of :py:meth:`~BaseEnricher.enrich_item`
"""
self.source_definition = kwargs['source_definition']
self.enricher_settings = kwargs['enricher_settings']
for _, doc in iterate(args):
for model in doc.traverse():
try:
if not hasattr(model, 'enricher_task'):
continue
except AttributeError:
continue
try:
self.enrich_item(model)
except SkipEnrichment as e:
bugsnag.notify(e, severity="info")
log.info('Skipping %s, reason: %s' %
(self.__class__.__name__, e.message))
except IOError as e:
# In the case of an IOError, disk space or some other
# serious problem might occur.
bugsnag.notify(e, severity="error")
log.critical(e)
raise
except Exception as e:
bugsnag.notify(e, severity="warning")
log.warning('Unexpected error: %s, reason: %s' %
(self.__class__.__name__, e))
raise
return args
def serialize_prop(self, prop, value):
"""Calls the super method and applies rdflib specific logic on it.
Most properties will be returned as a rdflib `Literal`. Relations will be
iterated and returned as `URIRef`.
"""
serialized = super(RdfSerializer, self).serialize_prop(prop, value)
if type(prop) == StringProperty:
return Literal(serialized, datatype=XSD.string)
elif type(prop) == IntegerProperty:
return Literal(serialized, datatype=XSD.integer)
elif type(prop) == DateTimeProperty:
return Literal(serialized, datatype=XSD.dateTime)
elif type(prop) == ArrayProperty:
return Literal(serialized) # todo tests?
elif type(prop) == Relation or type(prop) == OrderedRelation:
props = list()
o = BNode()
for _, item in iterate(value):
from .model import Relationship
if isinstance(item, Relationship):
item = item.model
self.deflate(item, props=True, rels=True)
props.append(URIRef('{}{}'.format(Ori.uri,
item.get_ori_identifier())))
if type(prop) == OrderedRelation:
Collection(self.g, o, props)
return o
return props
else:
raise SerializerError(
"Cannot serialize the property of type '{}'".format(type(prop))
)
def run(self, *args, **kwargs):
"""Start enrichment of a single item.
This method is called by the transformer or by another enricher
and expects args to contain a transformed (and possibly enriched)
item. Kwargs should contain the ``source_definition`` dict.
:returns: the output of :py:meth:`~BaseEnricher.enrich_item`
"""
self.source_definition = kwargs['source_definition']
self.enricher_settings = kwargs['enricher_settings']
for _, doc in iterate(args):
try:
for prop, value in doc.properties(props=True, rels=True):
try:
if not hasattr(value, 'enricher_task'):
continue
except AttributeError:
continue
self.enrich_item(value)
except SkipEnrichment as e:
bugsnag.notify(e, severity="info")
log.info('Skipping %s, reason: %s'
% (self.__class__.__name__, e.message))
except IOError as e:
# In the case of an IOError, disk space or some other
# serious problem might occur.
bugsnag.notify(e, severity="error")
log.critical(e)
except Exception, e:
bugsnag.notify(e, severity="warning")
log.warning('Unexpected error: %s, reason: %s'
% (self.__class__.__name__, e))