def clear_missing(self, verbose=False):
conn = Solr(settings.SOLR_URL)
start = 0
to_delete = []
pb = None
if verbose: print "Checking for indexed records no longer in database"
while True:
if verbose and pb: pb.update(start)
result = conn.search('*:*',
sort='id asc',
start=start,
rows=500,
fields=['id'])
if not result:
break
if verbose and not pb: pb = ProgressBar(result.hits)
ids = [int(r['id']) for r in result]
records = Record.objects.filter(id__in=ids).values_list('id',
flat=True)
for r in records:
ids.remove(r)
to_delete.extend(ids)
start += 500
if verbose and pb: pb.done()
pb = None
if verbose and to_delete:
print "Removing unneeded records from index"
pb = ProgressBar(len(to_delete))
while to_delete:
if verbose and pb: pb.update(pb.total - len(to_delete))
conn.delete(q='id:(%s)' % ' '.join(map(str, to_delete[:500])))
to_delete = to_delete[500:]
if verbose and pb: pb.done()
def handle(self, *args, **kwargs):
data_file = kwargs.get('data_file')
collections = map(int, kwargs.get('collections') or list())
separator = kwargs.get('separator')
fields = list(
Field.objects
.filter(fieldvalue__record__collection__in=collections)
.distinct()
)
with open(data_file, 'w') as csvfile:
fieldnames = [field.full_name for field in fields]
fieldnames.extend(['__file__', '__path__'])
writer = csv.DictWriter(csvfile, fieldnames=fieldnames)
writer.writeheader()
records = Record.objects.filter(collection__in=collections)
pb = ProgressBar(records.count())
for count, record in enumerate(records):
values = record.get_fieldvalues()
media = list(record.media_set.select_related('storage').all())
while values or media:
row = dict()
extra_values = list()
for value in values:
fieldname = value.field.full_name
v = value.value.encode('utf8')
if fieldname in row:
if not separator:
extra_values.append(value)
else:
row[fieldname] += separator + v
else:
row[fieldname] = v
if media:
m = media.pop()
row['__file__'] = m.url
row['__path__'] = m.storage.base
writer.writerow(row)
values = extra_values
pb.update(count)
pb.done()
def clear_missing(self, verbose=False):
conn = Solr(settings.SOLR_URL)
start = 0
to_delete = []
pb = None
if verbose: print "Checking for indexed records no longer in database"
while True:
if verbose and pb: pb.update(start)
result = conn.search('*:*', sort='id asc', start=start, rows=500, fields=['id'])
if not result:
break
if verbose and not pb: pb = ProgressBar(result.hits)
ids = [int(r['id']) for r in result]
records = Record.objects.filter(id__in=ids).values_list('id', flat=True)
for r in records:
ids.remove(r)
to_delete.extend(ids)
start += 500
if verbose and pb: pb.done()
pb = None
if verbose and to_delete:
print "Removing unneeded records from index"
pb = ProgressBar(len(to_delete))
while to_delete:
if verbose and pb: pb.update(pb.total - len(to_delete))
conn.delete(q='id:(%s)' % ' '.join(map(str, to_delete[:500])))
to_delete = to_delete[500:]
if verbose and pb: pb.done()
def handle(self, *args, **kwargs):
updated = 0
pb = ProgressBar(Media.objects.count())
for count, media in enumerate(Media.objects.all()):
name = slugify(os.path.splitext(os.path.basename(media.url))[0])
if name != media.name:
media.name = name
media.save(force_update_name=True)
updated += 1
pb.update(count)
pb.done()
print "Updated %d media objects" % updated
def index(self, verbose=False, all=False, collections=None):
from models import SolrIndexUpdates
self._build_group_tree()
core_fields = dict(
(f, f.get_equivalent_fields())
for f in Field.objects.filter(standard__prefix='dc'))
# add VRA Title to support work titles
try:
vra_title = Field.objects.get(name='title', standard__prefix='vra')
core_fields[vra_title] = vra_title.get_equivalent_fields()
except Field.DoesNotExist:
pass
count = 0
batch_size = 100
process_thread = None
if all:
query = Record.objects.all()
if collections:
query = query.filter(collection__in=collections)
total_count = query.count()
to_update = None
to_delete = None
else:
processed_updates = []
to_update = []
to_delete = []
updates = SolrIndexUpdates.objects.all()[:batch_size].values_list(
'id', 'record', 'delete')
for id, record, delete in updates:
processed_updates.append(id)
if delete:
to_delete.append(record)
else:
to_update.append(record)
total_count = len(to_update)
if not all and not to_update and not to_delete:
logger.info("Nothing to update in index, returning early")
return 0
conn = Solr(settings.SOLR_URL)
if to_delete:
conn.delete(q='id:(%s)' % ' '.join(map(str, to_delete)))
primary_work_record_manager = PrimaryWorkRecordManager()
if verbose:
pb = ProgressBar(total_count)
def get_method(method):
module, _, function = method.rpartition('.')
try:
__import__(module)
mod = sys.modules[module]
return getattr(mod, function)
except Exception, ex:
logging.debug(
"Could not import custom Solr record indexer %s: %s",
method, ex)
def remove(self):
common = self.check()
print "Removing unneeded media objects"
pb = ProgressBar(len(common))
count = 0
for id in common:
m = Media.objects.filter(record__id=id)
m.filter(url__startswith='medium\\').delete()
m.filter(url__startswith='thumb\\').delete()
count += 1
pb.update(count)
pb.done()
def handle(self, *prefix, **options):
if not prefix:
print self.help
else:
count = updated = 0
total = Media.objects.count()
pb = ProgressBar(total)
for i in range(0, total, 100):
for media in Media.objects.all()[i:i+100]:
if media.url.startswith(prefix):
media.url = media.url[len(prefix):]
media.save()
updated += 1
count += 1
pb.update(count)
reset_queries()
pb.done()
print "Updated %d/%d media objects" % (updated, count)
def handle(self, *args, **kwargs):
updated = 0
id_fields = standardfield('identifier', equiv=True)
titles = FieldValue.objects.select_related('record').filter(field__in=id_fields)
pb = ProgressBar(titles.count())
for count, title in enumerate(titles):
name = slugify(title.value)
if name != title.record.name:
title.record.name = name
title.record.save(force_update_name=True)
updated += 1
pb.update(count)
pb.done()
print "Updated %d record objects" % updated
def handle(self, *args, **kwargs):
coll = kwargs.get('collection')
if not coll:
print "--collection is a required parameter"
return
if coll.isdigit():
collection = Collection.objects.get(id=coll)
else:
collection = Collection.objects.get(name=coll)
admins = User.objects.filter(is_superuser=True)
if admins:
admin = admins[0]
else:
admin = None
pb = ProgressBar(collection.records.count())
for count, record in enumerate(collection.records.all()):
get_thumbnail_for_record(record, admin)
get_thumbnail_for_record(record, admin, crop_to_square=True)
pb.update(count)
pb.done()
def refresh(self):
count = 0
total = Media.objects.count()
pb = ProgressBar(total)
for i in range(0, total, 1000):
for media in Media.objects.all()[i:i+1000]:
media.identify()
count += 1
pb.update(count)
reset_queries()
pb.done()
def handle(self, *args, **kwargs):
data_file = kwargs.get('data_file')
collections = map(int, kwargs.get('collections') or list())
separator = kwargs.get('separator')
fields = list(
Field.objects
.filter(fieldvalue__record__collection__in=collections)
.distinct()
)
with open(data_file, 'w') as csvfile:
fieldnames = [field.full_name for field in fields]
fieldnames.extend(['__file__', '__path__'])
writer = csv.DictWriter(csvfile, fieldnames=fieldnames)
writer.writeheader()
records = Record.objects.filter(collection__in=collections)
pb = ProgressBar(records.count())
for count, record in enumerate(records):
values = record.get_fieldvalues()
media = list(record.media_set.select_related('storage').all())
while values or media:
row = dict()
extra_values = list()
for value in values:
fieldname = value.field.full_name
v = value.value
if fieldname in row:
if not separator:
extra_values.append(value)
else:
row[fieldname] += separator + v
else:
row[fieldname] = v
if media:
m = media.pop()
row['__file__'] = m.url
row['__path__'] = m.storage.base
writer.writerow(row)
values = extra_values
pb.update(count)
pb.done()
def handle(self, *args, **kwargs):
updated = 0
pb = ProgressBar(Media.objects.count())
for count, media in enumerate(Media.objects.all()):
name = slugify(os.path.splitext(os.path.basename(media.url))[0])
if name != media.name:
media.name = name
media.save(force_update_name=True)
updated += 1
pb.update(count)
pb.done()
print "Updated %d media objects" % updated
def remove(self):
common = self.check()
print "Removing unneeded media objects"
pb = ProgressBar(len(common))
count = 0
for id in common:
m = Media.objects.filter(record__id=id)
m.filter(url__startswith='medium\\').delete()
m.filter(url__startswith='thumb\\').delete()
count += 1
pb.update(count)
pb.done()
def handle(self, *prefix, **options):
if not prefix:
print(self.help)
else:
count = updated = 0
total = Media.objects.count()
pb = ProgressBar(total)
for i in range(0, total, 100):
for media in Media.objects.all()[i:i + 100]:
if media.url.startswith(prefix):
media.url = media.url[len(prefix):]
media.save()
updated += 1
count += 1
pb.update(count)
reset_queries()
pb.done()
print("Updated %d/%d media objects" % (updated, count))
def handle(self, *args, **kwargs):
updated = 0
id_fields = standardfield('identifier', equiv=True)
titles = FieldValue.objects.select_related('record').filter(
field__in=id_fields)
pb = ProgressBar(titles.count())
for count, title in enumerate(titles):
name = slugify(title.value)
if name != title.record.name:
title.record.name = name
title.record.save(force_update_name=True)
updated += 1
pb.update(count)
pb.done()
print("Updated %d record objects" % updated)
def handle(self, from_collection, to_collections, commit, *args,
**options):
if not from_collection or not to_collections:
print("Error: Must specify --from and --to arguments")
return
print("Mapping presentation items from collection %s to " \
"collection(s) %s" % (from_collection, to_collections))
idfields = standardfield_ids('identifier', equiv=True)
print("Fetching identifiers")
query = FieldValue.objects.filter(
field__in=idfields,
record__collectionitem__collection=from_collection,
owner=None,
context_type=None,
hidden=False).values_list('value', 'record')
record_to_id = dict()
for identifier, record in query:
record_to_id.setdefault(record, []).append(identifier)
print("Fetching target records")
query = FieldValue.objects.filter(
field__in=idfields,
record__collectionitem__collection__in=to_collections,
owner=None,
context_type=None,
hidden=False).values_list('value', 'record')
id_to_record = dict()
for identifier, record in query:
id_to_record.setdefault(identifier, []).append(record)
print("Mapping presentation items")
remapped = 0
errors = []
items = PresentationItem.objects.filter(
record__collectionitem__collection=from_collection)
pb = ProgressBar(len(items))
for count, item in enumerate(items):
identifiers = record_to_id.get(item.record_id)
if identifiers:
for identifier in identifiers:
new_records = id_to_record.get(identifier)
if new_records:
if len(new_records) == 1:
remapped += 1
if commit:
item.record_id = new_records[0]
item.save()
break
else:
errors.append(
"Multiple matching records with identifier "
"'%s' found in collection %s: %s" %
(identifier, to_collections,
sorted(new_records)))
else:
errors.append(
"No record with identifier '%s' found in "
"collection %s" % (identifier, to_collections))
else:
errors.append("No identifier found for record %s" %
item.record_id)
pb.update(count)
pb.done()
errors = sorted(set(errors))
if commit:
print("Remapped %s items" % remapped)
else:
print("Would have remapped %s items - rerun with --commit" % \
remapped)
if errors:
print("%s unique errors occurred:" % len(errors))
print('\n'.join(errors))
def index(self, verbose=False, all=False):
from models import SolrIndexUpdates
self._build_group_tree()
conn = Solr(settings.SOLR_URL)
core_fields = dict((f, f.get_equivalent_fields()) for f in Field.objects.filter(standard__prefix='dc'))
count = 0
batch_size = 500
process_thread = None
if all:
total_count = Record.objects.count()
else:
processed_updates = []
to_update = []
to_delete = []
for id,record,delete in SolrIndexUpdates.objects.all()[:batch_size].values_list('id', 'record', 'delete'):
processed_updates.append(id)
if delete:
to_delete.append(record)
else:
to_update.append(record)
if to_delete:
conn.delete(q='id:(%s)' % ' '.join(map(str, to_delete)))
total_count = len(to_update)
if verbose: pb = ProgressBar(total_count)
while True:
if verbose: pb.update(count)
if all:
record_ids = Record.objects.all()[count:count + batch_size].values_list('id', flat=True)
else:
record_ids = Record.objects.filter(id__in=to_update)[count:count + batch_size].values_list('id', flat=True)
if not record_ids:
break
# convert to plain list, because Django's value lists will add a LIMIT clause when used
# in an __in query, which causes MySQL to break
record_ids = list(record_ids)
media_dict = self._preload_related(Media, record_ids)
fieldvalue_dict = self._preload_related(FieldValue, record_ids, related=2)
groups_dict = self._preload_related(CollectionItem, record_ids)
count += len(record_ids)
def process_data(groups, fieldvalues, media):
def process():
docs = []
for record in Record.objects.filter(id__in=record_ids):
docs += [self._record_to_solr(record, core_fields, groups.get(record.id, []),
fieldvalues.get(record.id, []), media.get(record.id, []))]
conn.add(docs)
return process
if process_thread:
process_thread.join()
process_thread = Thread(target=process_data(groups_dict, fieldvalue_dict, media_dict))
process_thread.start()
reset_queries()
if process_thread:
process_thread.join()
if verbose: pb.done()
if all:
SolrIndexUpdates.objects.filter(delete=False).delete()
else:
SolrIndexUpdates.objects.filter(id__in=processed_updates).delete()
type = self.type,
original_id = self.key(row),
content_hash = hash,
)
self.added += 1
else:
logging.error("No instance created: %s %s" % (self.model_name, self.key(row)))
self.errors += 1
count += 1
if not (count % 1000): reset_queries()
if pb: pb.update(count)
if pb: pb.done()
reset_queries()
if self.object_history and self.supports_deletion:
print "Removing unused objects"
pb = ProgressBar(len(self.object_history))
count = 0
for oid, o in self.object_history.iteritems():
if self.preserve_memory:
o = ObjectHistory.objects.get(content_type=self.content_type,
m2m_content_type=self.m2m_content_type,
type=self.type,
original_id=oid)
# these objects have been deleted since the last migration
if not self.m2m_model:
self.model.objects.filter(id=o.object_id).delete()
else:
self.m2m_delete(object_id=o.object_id, m2m_object_id=o.m2m_object_id)
logging.debug('%s %s not in source, deleting' % (self.model_name, o.original_id))
self.deleted += 1
o.delete()
def index(self, verbose=False, all=False, collections=None):
from .models import SolrIndexUpdates
self._build_group_tree()
core_fields = dict(
(f, f.get_equivalent_fields())
for f in Field.objects.filter(standard__prefix='dc')
)
# add VRA Title to support work titles
try:
vra_title = Field.objects.get(name='title', standard__prefix='vra')
core_fields[vra_title] = vra_title.get_equivalent_fields()
except Field.DoesNotExist:
pass
count = 0
batch_size = 100
process_thread = None
if all:
query = Record.objects.all()
if collections:
query = query.filter(collection__in=collections)
total_count = query.count()
to_update = None
to_delete = None
else:
processed_updates = []
to_update = []
to_delete = []
updates = SolrIndexUpdates.objects.all()[:batch_size].values_list(
'id', 'record', 'delete')
for id, record, delete in updates:
processed_updates.append(id)
if delete:
to_delete.append(record)
else:
to_update.append(record)
total_count = len(to_update)
if not all and not to_update and not to_delete:
logger.info("Nothing to update in index, returning early")
return 0
conn = Solr(settings.SOLR_URL)
if to_delete:
conn.delete(q='id:(%s)' % ' '.join(map(str, to_delete)))
primary_work_record_manager = PrimaryWorkRecordManager()
if verbose:
pb = ProgressBar(total_count)
def get_method(method):
module, _, function = method.rpartition('.')
try:
__import__(module)
mod = sys.modules[module]
return getattr(mod, function)
except Exception as ex:
logging.debug(
"Could not import custom Solr record indexer %s: %s",
method, ex)
def get_custom_doc_processor():
method = getattr(settings, 'SOLR_RECORD_INDEXER', None)
if method:
method = get_method(method)
return method or (lambda doc, **kwargs: doc)
def get_custom_doc_pre_processor():
method = getattr(settings, 'SOLR_RECORD_PRE_INDEXER', None)
if method:
method = get_method(method)
return method or (lambda **kwargs: None)
custom_doc_processor = get_custom_doc_processor()
custom_doc_pre_processor = get_custom_doc_pre_processor()
while True:
if verbose:
pb.update(count)
if all:
records = Record.objects.all()
if collections:
records = records.filter(collection__in=collections)
else:
records = Record.objects.filter(id__in=to_update)
records = records[count:count + batch_size]
record_ids = records.values_list('id', flat=True)
if not record_ids:
break
# convert to plain list, because Django's value lists will add a
# LIMIT clause when used in an __in query, which causes MySQL to
# break. (ph): also, made an explicit separate value for this
record_id_list = list(record_ids)
media_dict = self._preload_related(Media, record_id_list)
fieldvalue_dict = self._preload_related(FieldValue, record_id_list,
fields=('field',))
groups_dict = self._preload_related(CollectionItem, record_id_list)
image_to_works = self._preload_image_to_works(record_id_list)
work_to_images = self._preload_work_to_images(record_id_list)
implicit_primary_work_records = primary_work_record_manager \
.get_implicit_primary_work_records(record_id_list)
count += len(record_id_list)
# VERY IMPORTANT: SINCE process_data RUNS IN ANOTHER THREAD, IT
# CANNOT DIRECTLY ACCESS ANY VARIABLES FROM THE OUTER SCOPE
# ALWAYS PASS IN ANY NEEDED VARIABLES
def process_data(groups, fieldvalues, media, record_id_list,
image_to_works, work_to_images,
implicit_primary_work_records):
def process():
docs = []
for record in Record.objects.filter(id__in=record_id_list):
g = groups.get(record.id, [])
fv = fieldvalues.get(record.id, [])
m = media.get(record.id, [])
custom_doc_pre_processor(
record=record,
core_fields=core_fields,
groups=g,
fieldvalues=fv,
media=m,
)
doc = self._record_to_solr(
record, core_fields, g, fv, m,
image_to_works,
work_to_images,
implicit_primary_work_records
)
doc = custom_doc_processor(
doc,
record=record,
core_fields=core_fields,
groups=g,
fieldvalues=fv,
media=m,
)
docs.append(doc)
conn.add(docs)
return process
if process_thread:
process_thread.join()
process_thread = Thread(
target=process_data(groups_dict, fieldvalue_dict,
media_dict, record_id_list,
image_to_works, work_to_images,
implicit_primary_work_records))
process_thread.start()
reset_queries()
if process_thread:
process_thread.join()
if verbose:
pb.done()
if all:
# TODO: this will remove objects that have been added
# in the meantime
SolrIndexUpdates.objects.filter(delete=False).delete()
else:
SolrIndexUpdates.objects.filter(id__in=processed_updates).delete()
return count
def index(self, verbose=False, all=False):
from models import SolrIndexUpdates
self._build_group_tree()
core_fields = dict(
(f, f.get_equivalent_fields())
for f in Field.objects.filter(standard__prefix='dc'))
count = 0
batch_size = 500
process_thread = None
if all:
total_count = Record.objects.count()
to_update = None
to_delete = None
else:
processed_updates = []
to_update = []
to_delete = []
updates = SolrIndexUpdates.objects.all()[:batch_size].values_list(
'id', 'record', 'delete')
for id, record, delete in updates:
processed_updates.append(id)
if delete:
to_delete.append(record)
else:
to_update.append(record)
total_count = len(to_update)
if not all and not to_update and not to_delete:
logger.info("Nothing to update in index, returning early")
return 0
conn = Solr(settings.SOLR_URL)
if to_delete:
conn.delete(q='id:(%s)' % ' '.join(map(str, to_delete)))
if verbose:
pb = ProgressBar(total_count)
while True:
if verbose:
pb.update(count)
if all:
records = Record.objects.all()
else:
records = Record.objects.filter(id__in=to_update)
records = records[count:count + batch_size]
record_ids = records.values_list('id', flat=True)
if not record_ids:
break
# convert to plain list, because Django's value lists will add a
# LIMIT clause when used in an __in query, which causes MySQL to
# break. (ph): also, made an explicit separate value for this
record_id_list = list(record_ids)
media_dict = self._preload_related(Media, record_id_list)
fieldvalue_dict = self._preload_related(FieldValue,
record_id_list,
related=2)
groups_dict = self._preload_related(CollectionItem, record_id_list)
count += len(record_id_list)
def process_data(groups, fieldvalues, media, record_id_list):
def process():
docs = []
for record in Record.objects.filter(id__in=record_id_list):
docs.append(
self._record_to_solr(
record, core_fields, groups.get(record.id, []),
fieldvalues.get(record.id, []),
media.get(record.id, [])))
conn.add(docs)
return process
if process_thread:
process_thread.join()
process_thread = Thread(target=process_data(
groups_dict, fieldvalue_dict, media_dict, record_id_list))
process_thread.start()
reset_queries()
if process_thread:
process_thread.join()
if verbose:
pb.done()
if all:
SolrIndexUpdates.objects.filter(delete=False).delete()
else:
SolrIndexUpdates.objects.filter(id__in=processed_updates).delete()
return count
original_id=self.key(row),
content_hash=hash,
)
self.added += 1
else:
logging.error("No instance created: %s %s" %
(self.model_name, self.key(row)))
self.errors += 1
count += 1
if not (count % 1000): reset_queries()
if pb: pb.update(count)
if pb: pb.done()
reset_queries()
if self.object_history and self.supports_deletion:
print "Removing unused objects"
pb = ProgressBar(len(self.object_history))
count = 0
to_delete = [
] # Delete many objects at once for better performance
for oid, o in self.object_history.iteritems():
if self.preserve_memory:
o = ObjectHistory.objects.get(
content_type=self.content_type,
m2m_content_type=self.m2m_content_type,
type=self.type,
original_id=oid)
# these objects have been deleted since the last migration
logging.debug('%s %s not in source, deleting' %
(self.model_name, o.original_id))
if not self.m2m_model:
to_delete.append(o)
def handle(self, *args, **kwargs):
system_field = get_system_field()
collections = map(int, kwargs.get('collections') or list())
mapping_file = kwargs.get('mapping_file')
if not collections:
print "--collection is a required parameter"
return
if not mapping_file:
print "--mapping is a required parameter"
return
mappings = dict()
with open(mapping_file, 'r') as csvfile:
reader = csv.DictReader(csvfile)
for row in reader:
mappings[row['Identifier']] = (row['Work'], row['Primary'])
related_field = Field.objects.get(
standard__prefix='dc',
name='relation',
)
existing_works = FieldValue.objects.filter(
record__collection__in=collections,
field=related_field,
refinement='IsPartOf',
)
# Clean out old relations
print "Deleting old works info"
existing_works.delete()
id_fields = standardfield_ids('identifier', equiv=True)
print "Fetching records"
identifiers = FieldValue.objects.select_related('record').filter(
record__collection__in=collections,
field__in=id_fields,
)
pb = ProgressBar(identifiers.count())
# Insert new relations
for count, identifier in enumerate(identifiers):
work, isprimary = mappings.get(identifier.value, (None, False))
isprimary = isprimary == 'True'
if not work:
print "Warning: no entry found for identifier '%s'" % \
identifier.value
continue
FieldValue.objects.create(record=identifier.record,
field=related_field,
refinement='IsPartOf',
value=work,
hidden=True)
fv = list(
FieldValue.objects.filter(record=identifier.record,
field=system_field,
label='primary-work-record'))
if len(fv) > 0:
if not isprimary:
for f in fv:
f.delete()
elif isprimary:
FieldValue.objects.create(
record=identifier.record,
field=system_field,
label='primary-work-record',
value=work,
hidden=True,
)
pb.update(count)
pb.done()
def handle(self, *args, **kwargs):
mapping_file = kwargs.get('mapping_file')
collections = map(int, kwargs.get('collections') or list())
if not mapping_file or not collections:
print "--collection and --mapping are required parameters"
return
works = dict()
with open(mapping_file, 'rU') as mappings:
reader = csv.DictReader(mappings)
for row in reader:
identifier = row['ImageFileName']
work = row['fk_WorkID']
works.setdefault(work, []).append(identifier)
# Clean out old relations
FieldValue.objects.filter(
record__collection__in=collections,
field__standard__prefix='dc',
field__name='relation',
refinement='IsPartOf',
).delete()
related_field = Field.objects.get(
standard__prefix='dc',
name='relation',
)
id_fields = standardfield_ids('identifier', equiv=True)
print "Caching record identifiers"
identifiers = dict()
values = FieldValue.objects.select_related('record').filter(
record__collection__in=collections, field__in=id_fields)
for fv in values:
identifiers[fv.value] = fv.record.id
pb = ProgressBar(len(works))
# Insert new relations
for count, work in enumerate(works.itervalues()):
primary = work[0]
items = work[1:]
for item in items:
options = [item]
if item.lower().endswith('.jpg'):
options.append(item[:-4])
record = None
for option in options:
record = identifiers.get(option)
if record:
break
else:
continue
FieldValue.objects.create(record=Record.objects.get(id=record),
field=related_field,
refinement='IsPartOf',
value=primary)
pb.update(count)
pb.done()
def run(self, step=None, steps=None):
def compare_hash(historic, current):
if self.preserve_memory:
return historic == int(current, 16)
else:
return historic.content_hash == current
print "\n%sMigrating %s" % ('Step %s of %s: ' %
(step, steps) if step and steps else '',
self.model_name)
r = re.match('^SELECT (.+) FROM (.+)$', self.query)
pb = ProgressBar(
list(self.cursor.execute("SELECT COUNT(*) FROM %s" %
r.groups()[1]))[0][0]) if r else None
count = 0
merged_ids = dict()
for row in self.cursor.execute(self.query):
hash = self.hash(row)
h = self.object_history.pop(self.key(row), None)
create = True
if h:
if compare_hash(h, hash) or self.m2m_model:
# object unchanged, don't need to do anything
# or, we're working on a many-to-many relation, don't need to do anything on the instance
logging.debug('%s %s unchanged in source, skipping' %
(self.model_name, self.key(row)))
create = False
self.unchanged += 1
elif compare_hash(h, STATIC_CONTENT_HASH):
# object may have changed, but we don't have the hash of the previous version
# so we can't know. Just store the new hash in the history to be able
# to track future changes
if self.preserve_memory:
h = ObjectHistory.objects.get(
content_type=self.content_type,
m2m_content_type=self.m2m_content_type,
type=self.type,
original_id=self.key(row))
h.content_hash = hash
h.save()
create = False
self.nohistory += 1
else:
if self.preserve_memory:
h = ObjectHistory.objects.get(
content_type=self.content_type,
m2m_content_type=self.m2m_content_type,
type=self.type,
original_id=self.key(row))
# object changed, need to update
try:
instance = self.model.objects.get(id=h.object_id)
create = False
except ObjectDoesNotExist:
instance = None
if not instance:
# object has been deleted, need to recreate
logging.debug(
'%s %s changed and not in destination, recreating'
% (self.model_name, row.ID))
h.delete()
self.recreated += 1
else:
# update existing object
logging.debug('%s %s changed, updating' %
(self.model_name, self.key(row)))
self.update(instance, row)
try:
instance.save()
self.post_save(instance, row)
h.content_hash = hash
h.save()
self.updated += 1
except (IntegrityError, pyodbc.IntegrityError), ex:
logging.error("Integrity error: %s %s" %
(self.model_name, self.key(row)))
logging.error(ex)
self.errors += 1
if create:
# object does not exist, need to create
logging.debug('%s %s not in destination, creating' %
(self.model_name, self.key(row)))
if not self.m2m_model:
try:
instance = self.create(row)
if instance:
instance.save()
self.post_save(instance, row)
ObjectHistory.objects.create(
content_type=self.content_type,
object_id=instance.id,
type=self.type,
original_id=self.key(row),
content_hash=hash,
)
self.added += 1
else:
logging.error("No instance created: %s %s" %
(self.model_name, self.key(row)))
self.errors += 1
except (IntegrityError, pyodbc.IntegrityError,
ValueError), ex:
logging.error("%s: %s %s" %
(type(ex).__name__, self.model_name,
self.key(row)))
logging.error(ex)
self.errors += 1
except MergeObjectsException, ex:
merged_ids[self.key(row)] = ex.instance
def handle(self, *args, **kwargs):
system_field = get_system_field()
collections = map(int, kwargs.get('collections') or list())
mapping_file = kwargs.get('mapping_file')
if not collections:
print "--collection is a required parameter"
return
if not mapping_file:
print "--mapping is a required parameter"
return
mappings = dict()
with open(mapping_file, 'r') as csvfile:
reader = csv.DictReader(csvfile)
for row in reader:
mappings[row['Identifier']] = (row['Work'], row['Primary'])
related_field = Field.objects.get(
standard__prefix='dc',
name='relation',
)
existing_works = FieldValue.objects.filter(
record__collection__in=collections,
field=related_field,
refinement='IsPartOf',
)
# Clean out old relations
print "Deleting old works info"
existing_works.delete()
id_fields = standardfield_ids('identifier', equiv=True)
print "Fetching records"
identifiers = FieldValue.objects.select_related('record').filter(
record__collection__in=collections,
field__in=id_fields,
)
pb = ProgressBar(identifiers.count())
# Insert new relations
for count, identifier in enumerate(identifiers):
work, isprimary = mappings.get(identifier.value, (None, False))
isprimary = isprimary == 'True'
if not work:
print "Warning: no entry found for identifier '%s'" % \
identifier.value
continue
FieldValue.objects.create(
record=identifier.record,
field=related_field,
refinement='IsPartOf',
value=work,
hidden=True
)
fv = list(FieldValue.objects.filter(
record=identifier.record,
field=system_field,
label='primary-work-record'
))
if len(fv) > 0:
if not isprimary:
for f in fv:
f.delete()
elif isprimary:
FieldValue.objects.create(
record=identifier.record,
field=system_field,
label='primary-work-record',
value=work,
hidden=True,
)
pb.update(count)
pb.done()
