def lookup_equivalent_isbns(self, identifier):
"""Finds NoveList data for all ISBNs equivalent to an identifier.
:return: Metadata object or None
"""
lookup_metadata = []
license_sources = DataSource.license_sources_for(self._db, identifier)
# Look up strong ISBN equivalents.
for license_source in license_sources:
lookup_metadata += [
self.lookup(eq.output) for eq in identifier.equivalencies
if (eq.data_source == license_source and eq.strength == 1
and eq.output.type == Identifier.ISBN)
]
if not lookup_metadata:
self.log.error(
"Identifiers without an ISBN equivalent can't \
be looked up with NoveList: %r", identifier)
return None
# Remove None values.
lookup_metadata = [
metadata for metadata in lookup_metadata if metadata
]
if not lookup_metadata:
return None
best_metadata = self.choose_best_metadata(lookup_metadata, identifier)
if not best_metadata:
metadata, confidence = best_metadata
if round(confidence, 2) < 0.5:
self.log.warn(self.NO_ISBN_EQUIVALENCY, identifier)
return None
return metadata
def lookup_equivalent_isbns(self, identifier):
"""Finds NoveList data for all ISBNs equivalent to an identifier.
:return: Metadata object or None
"""
lookup_metadata = []
license_sources = DataSource.license_sources_for(self._db, identifier)
# Look up strong ISBN equivalents.
for license_source in license_sources:
lookup_metadata += [self.lookup(eq.output)
for eq in identifier.equivalencies
if (eq.data_source==license_source and eq.strength==1
and eq.output.type==Identifier.ISBN)]
if not lookup_metadata:
self.log.error(
"Identifiers without an ISBN equivalent can't \
be looked up with NoveList: %r", identifier
)
return None
# Remove None values.
lookup_metadata = [metadata for metadata in lookup_metadata if metadata]
if not lookup_metadata:
return None
best_metadata = self.choose_best_metadata(lookup_metadata, identifier)
if not best_metadata:
metadata, confidence = best_metadata
if round(confidence, 2) < 0.5:
self.log.warn(self.NO_ISBN_EQUIVALENCY, identifier)
return None
return metadata
def lookup_equivalent_isbns(self, identifier):
"""Finds NoveList data for all ISBNs equivalent to an identifier.
:return: Metadata object or None
"""
lookup_metadata = []
license_sources = DataSource.license_sources_for(self._db, identifier)
# Find strong ISBN equivalents.
isbns = list()
for license_source in license_sources:
isbns += [
eq.output
for eq in identifier.equivalencies
if (
eq.data_source == license_source
and eq.strength == 1
and eq.output.type == Identifier.ISBN
)
]
if not isbns:
self.log.warning(
(
"Identifiers without an ISBN equivalent can't"
"be looked up with NoveList: %r"
),
identifier,
)
return None
# Look up metadata for all equivalent ISBNs.
lookup_metadata = list()
for isbn in isbns:
metadata = self.lookup(isbn)
if metadata:
lookup_metadata.append(metadata)
if not lookup_metadata:
self.log.warning(
(
"No NoveList metadata found for Identifiers without an ISBN"
"equivalent can't be looked up with NoveList: %r"
),
identifier,
)
return None
best_metadata, confidence = self.choose_best_metadata(
lookup_metadata, identifier
)
if best_metadata:
if round(confidence, 2) < 0.5:
self.log.warning(self.NO_ISBN_EQUIVALENCY, identifier)
return None
return metadata
def lookup_equivalent_isbns(self, identifier):
"""Finds NoveList data for all ISBNs equivalent to an identifier.
:return: Metadata object or None
"""
lookup_metadata = []
license_sources = DataSource.license_sources_for(self._db, identifier)
# Find strong ISBN equivalents.
isbns = list()
for license_source in license_sources:
isbns += [eq.output for eq in identifier.equivalencies if (
eq.data_source==license_source and
eq.strength==1 and
eq.output.type==Identifier.ISBN
)]
if not isbns:
self.log.warn(
("Identifiers without an ISBN equivalent can't"
"be looked up with NoveList: %r"), identifier
)
return None
# Look up metadata for all equivalent ISBNs.
lookup_metadata = list()
for isbn in isbns:
metadata = self.lookup(isbn)
if metadata:
lookup_metadata.append(metadata)
if not lookup_metadata:
self.log.warn(
("No NoveList metadata found for Identifiers without an ISBN"
"equivalent can't be looked up with NoveList: %r"), identifier
)
return None
best_metadata, confidence = self.choose_best_metadata(
lookup_metadata, identifier
)
if best_metadata:
if round(confidence, 2) < 0.5:
self.log.warn(self.NO_ISBN_EQUIVALENCY, identifier)
return None
return metadata
