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def syncBuffer( self ): """ I detect and correct corruption in the buffer. Corruption in the buffer is defined as the following conditions both being true: 1. The buffer contains at least one newline; 2. The text until the first newline is not a ...
def connected(self, msg): """Once I've connected I want to subscribe to my the message queue. """ super(MyStomp, self).connected(msg) self.log.info("connected: session %s" % msg['headers']['session']) f = stomper.Frame() f.unpack(stomper.subscribe(DESTINATION)) r...
def delete_entity_signal_handler(sender, instance, **kwargs): """ Defines a signal handler for syncing an individual entity. Called when an entity is saved or deleted. """ if instance.__class__ in entity_registry.entity_registry: Entity.all_objects.delete_for_obj(instance)
def save_entity_signal_handler(sender, instance, **kwargs): """ Defines a signal handler for saving an entity. Syncs the entity to the entity mirror table. """ if instance.__class__ in entity_registry.entity_registry: sync_entities(instance) if instance.__class__ in entity_registry.enti...
def m2m_changed_entity_signal_handler(sender, instance, action, **kwargs): """ Defines a signal handler for a manytomany changed signal. Only listens for the post actions so that entities are synced once (rather than twice for a pre and post action). """ if action == 'post_add' or action == 'post_re...
def turn_off_syncing(for_post_save=True, for_post_delete=True, for_m2m_changed=True, for_post_bulk_operation=True): """ Disables all of the signals for syncing entities. By default, everything is turned off. If the user wants to turn off everything but one signal, for example the post_save signal, they woul...
def turn_on_syncing(for_post_save=True, for_post_delete=True, for_m2m_changed=True, for_post_bulk_operation=False): """ Enables all of the signals for syncing entities. Everything is True by default, except for the post_bulk_operation signal. The reason for this is because when any bulk operation occurs on ...
def add(self, value): """Add element *value* to the set.""" # Raise TypeError if value is not hashable hash(value) self.redis.sadd(self.key, self._pickle(value))
def discard(self, value): """Remove element *value* from the set if it is present.""" # Raise TypeError if value is not hashable hash(value) self.redis.srem(self.key, self._pickle(value))
def isdisjoint(self, other): """ Return ``True`` if the set has no elements in common with *other*. Sets are disjoint if and only if their intersection is the empty set. :param other: Any kind of iterable. :rtype: boolean """ def isdisjoint_trans_pure(pipe): ...
def pop(self): """ Remove and return an arbitrary element from the set. Raises :exc:`KeyError` if the set is empty. """ result = self.redis.spop(self.key) if result is None: raise KeyError return self._unpickle(result)
def random_sample(self, k=1): """ Return a *k* length list of unique elements chosen from the Set. Elements are not removed. Similar to :func:`random.sample` function from standard library. :param k: Size of the sample, defaults to 1. :rtype: :class:`list` """ ...
def remove(self, value): """ Remove element *value* from the set. Raises :exc:`KeyError` if it is not contained in the set. """ # Raise TypeError if value is not hashable hash(value) result = self.redis.srem(self.key, self._pickle(value)) if not result: ...
def scan_elements(self): """ Yield each of the elements from the collection, without pulling them all into memory. .. warning:: This method is not available on the set collections provided by Python. This method may return the element multiple times....
def intersection_update(self, *others): """ Update the set, keeping only elements found in it and all *others*. :param others: Iterables, each one as a single positional argument. :rtype: None .. note:: The same behavior as at :func:`difference_update` applies. ...
def update(self, *others): """ Update the set, adding elements from all *others*. :param others: Iterables, each one as a single positional argument. :rtype: None .. note:: If all *others* are :class:`Set` instances, the operation is performed completely...
def difference_update(self, *others): """ Update the set, removing elements found in *others*. :param others: Iterables, each one as a single positional argument. :rtype: None .. note:: The same behavior as at :func:`update` applies. """ return self....
def discard_member(self, member, pipe=None): """ Remove *member* from the collection, unconditionally. """ pipe = self.redis if pipe is None else pipe pipe.zrem(self.key, self._pickle(member))
def scan_items(self): """ Yield each of the ``(member, score)`` tuples from the collection, without pulling them all into memory. .. warning:: This method may return the same (member, score) tuple multiple times. See the `Redis SCAN documentation ...
def update(self, other): """ Update the collection with items from *other*. Accepts other :class:`SortedSetBase` instances, dictionaries mapping members to numeric scores, or sequences of ``(member, score)`` tuples. """ def update_trans(pipe): other_items = me...
def count_between(self, min_score=None, max_score=None): """ Returns the number of members whose score is between *min_score* and *max_score* (inclusive). """ min_score = float('-inf') if min_score is None else float(min_score) max_score = float('inf') if max_score is Non...
def discard_between( self, min_rank=None, max_rank=None, min_score=None, max_score=None, ): """ Remove members whose ranking is between *min_rank* and *max_rank* OR whose score is between *min_score* and *max_score* (both ranges inclusive). If ...
def get_score(self, member, default=None, pipe=None): """ Return the score of *member*, or *default* if it is not in the collection. """ pipe = self.redis if pipe is None else pipe score = pipe.zscore(self.key, self._pickle(member)) if (score is None) and (defaul...
def get_or_set_score(self, member, default=0): """ If *member* is in the collection, return its value. If not, store it with a score of *default* and return *default*. *default* defaults to 0. """ default = float(default) def get_or_set_score_trans(pipe): ...
def get_rank(self, member, reverse=False, pipe=None): """ Return the rank of *member* in the collection. By default, the member with the lowest score has rank 0. If *reverse* is ``True``, the member with the highest score has rank 0. """ pipe = self.redis if pipe is None ...
def increment_score(self, member, amount=1): """ Adjust the score of *member* by *amount*. If *member* is not in the collection it will be stored with a score of *amount*. """ return self.redis.zincrby( self.key, float(amount), self._pickle(member) )
def items( self, min_rank=None, max_rank=None, min_score=None, max_score=None, reverse=False, pipe=None, ): """ Return a list of ``(member, score)`` tuples whose ranking is between *min_rank* and *max_rank* AND whose score is between *m...
def set_score(self, member, score, pipe=None): """ Set the score of *member* to *score*. """ pipe = self.redis if pipe is None else pipe pipe.zadd(self.key, {self._pickle(member): float(score)})
def distance_between(self, place_1, place_2, unit='km'): """ Return the great-circle distance between *place_1* and *place_2*, in the *unit* specified. The default unit is ``'km'``, but ``'m'``, ``'mi'``, and ``'ft'`` can also be specified. """ pickled_place_1 = ...
def get_hash(self, place): """ Return the Geohash of *place*. If it's not present in the collection, ``None`` will be returned instead. """ pickled_place = self._pickle(place) try: return self.redis.geohash(self.key, pickled_place)[0] except (A...
def get_location(self, place): """ Return a dict with the coordinates *place*. The dict's keys are ``'latitude'`` and ``'longitude'``. If it's not present in the collection, ``None`` will be returned instead. """ pickled_place = self._pickle(place) try: ...
def places_within_radius( self, place=None, latitude=None, longitude=None, radius=0, **kwargs ): """ Return descriptions of the places stored in the collection that are within the circle specified by the given location and radius. A list of dicts will be returned. Th...
def set_location(self, place, latitude, longitude, pipe=None): """ Set the location of *place* to the location specified by *latitude* and *longitude*. *place* can be any pickle-able Python object. """ pipe = self.redis if pipe is None else pipe pipe.geoadd(self....
def update(self, other): """ Update the collection with items from *other*. Accepts other :class:`GeoDB` instances, dictionaries mapping places to ``{'latitude': latitude, 'longitude': longitude}`` dicts, or sequences of ``(place, latitude, longitude)`` tuples. """ ...
def copy(self, key=None): """ Creates another collection with the same items and maxsize with the given *key*. """ other = self.__class__( maxsize=self.maxsize, redis=self.persistence.redis, key=key ) other.update(self) return other
def fromkeys(cls, seq, value=None, **kwargs): """ Create a new collection with keys from *seq* and values set to *value*. The keyword arguments are passed to the persistent ``Dict``. """ other = cls(**kwargs) other.update(((key, value) for key in seq)) return oth...
def sync(self, clear_cache=False): """ Copy items from the local cache to the persistent Dict. If *clear_cache* is ``True``, clear out the local cache after pushing its items to Redis. """ self.persistence.update(self) if clear_cache: self.cache.clear...
def _data(self, pipe=None): """ Return a :obj:`list` of all values from Redis (without checking the local cache). """ pipe = self.redis if pipe is None else pipe return [self._unpickle(v) for v in pipe.lrange(self.key, 0, -1)]
def append(self, value): """Insert *value* at the end of this collection.""" len_self = self.redis.rpush(self.key, self._pickle(value)) if self.writeback: self.cache[len_self - 1] = value
def copy(self, key=None): """ Return a new collection with the same items as this one. If *key* is specified, create the new collection with the given Redis key. """ other = self.__class__( redis=self.redis, key=key, writeback=self.writeback ) ...
def extend(self, other): """ Adds the values from the iterable *other* to the end of this collection. """ def extend_trans(pipe): values = list(other.__iter__(pipe)) if use_redis else other len_self = pipe.rpush(self.key, *(self._pickle(v) for v in values)...
def index(self, value, start=None, stop=None): """ Return the index of the first occurence of *value*. If *start* or *stop* are provided, return the smallest index such that ``s[index] == value`` and ``start <= index < stop``. """ def index_trans(pipe): len_se...
def insert(self, index, value): """ Insert *value* into the collection at *index*. """ if index == 0: return self._insert_left(value) def insert_middle_trans(pipe): self._insert_middle(index, value, pipe=pipe) return self._transaction(insert_midd...
def pop(self, index=-1): """ Retrieve the value at *index*, remove it from the collection, and return it. """ if index == 0: return self._pop_left() elif index == -1: return self._pop_right() else: return self._pop_middle(index)
def remove(self, value): """Remove the first occurence of *value*.""" def remove_trans(pipe): # If we're caching, we'll need to synchronize before removing. if self.writeback: self._sync_helper(pipe) delete_count = pipe.lrem(self.key, 1, self._pickle(...
def reverse(self): """ Reverses the items of this collection "in place" (only two values are retrieved from Redis at a time). """ def reverse_trans(pipe): if self.writeback: self._sync_helper(pipe) n = self.__len__(pipe) for i ...
def sort(self, key=None, reverse=False): """ Sort the items of this collection according to the optional callable *key*. If *reverse* is set then the sort order is reversed. .. note:: This sort requires all items to be retrieved from Redis and stored in memory. ...
def append(self, value): """Add *value* to the right side of the collection.""" def append_trans(pipe): self._append_helper(value, pipe) self._transaction(append_trans)
def appendleft(self, value): """Add *value* to the left side of the collection.""" def appendleft_trans(pipe): self._appendleft_helper(value, pipe) self._transaction(appendleft_trans)
def copy(self, key=None): """ Return a new collection with the same items as this one. If *key* is specified, create the new collection with the given Redis key. """ other = self.__class__( self.__iter__(), self.maxlen, redis=self.redis...
def extend(self, other): """ Extend the right side of the the collection by appending values from the iterable *other*. """ def extend_trans(pipe): values = list(other.__iter__(pipe)) if use_redis else other for v in values: self._append_he...
def extendleft(self, other): """ Extend the left side of the the collection by appending values from the iterable *other*. Note that the appends will reverse the order of the given values. """ def extendleft_trans(pipe): values = list(other.__iter__(pipe)) if ...
def insert(self, index, value): """ Insert *value* into the collection at *index*. If the insertion would the collection to grow beyond ``maxlen``, raise ``IndexError``. """ def insert_trans(pipe): len_self = self.__len__(pipe) if (self.maxlen is n...
def rotate(self, n=1): """ Rotate the deque n steps to the right. If n is negative, rotate to the left. """ # No work to do for a 0-step rotate if n == 0: return def rotate_trans(pipe): # Synchronize the cache before rotating i...
def get_entities_by_kind(membership_cache=None, is_active=True): """ Builds a dict with keys of entity kinds if and values are another dict. Each of these dicts are keyed off of a super entity id and optional have an 'all' key for any group that has a null super entity. Example structure: { ...
def is_sub_to_all(self, *super_entities): """ Given a list of super entities, return the entities that have those as a subset of their super entities. """ if super_entities: if len(super_entities) == 1: # Optimize for the case of just one super entity since th...
def is_sub_to_any(self, *super_entities): """ Given a list of super entities, return the entities that have super entities that interset with those provided. """ if super_entities: return self.filter(id__in=EntityRelationship.objects.filter( super_entity__in=s...
def is_sub_to_all_kinds(self, *super_entity_kinds): """ Each returned entity will have superentites whos combined entity_kinds included *super_entity_kinds """ if super_entity_kinds: if len(super_entity_kinds) == 1: # Optimize for the case of just one ...
def is_sub_to_any_kind(self, *super_entity_kinds): """ Find all entities that have super_entities of any of the specified kinds """ if super_entity_kinds: # get the pks of the desired subs from the relationships table if len(super_entity_kinds) == 1: ...
def cache_relationships(self, cache_super=True, cache_sub=True): """ Caches the super and sub relationships by doing a prefetch_related. """ relationships_to_cache = compress( ['super_relationships__super_entity', 'sub_relationships__sub_entity'], [cache_super, cache_sub]) ...
def get_for_obj(self, entity_model_obj): """ Given a saved entity model object, return the associated entity. """ return self.get(entity_type=ContentType.objects.get_for_model( entity_model_obj, for_concrete_model=False), entity_id=entity_model_obj.id)
def delete_for_obj(self, entity_model_obj): """ Delete the entities associated with a model object. """ return self.filter( entity_type=ContentType.objects.get_for_model( entity_model_obj, for_concrete_model=False), entity_id=entity_model_obj.id).delete( ...
def cache_relationships(self, cache_super=True, cache_sub=True): """ Caches the super and sub relationships by doing a prefetch_related. """ return self.get_queryset().cache_relationships(cache_super=cache_super, cache_sub=cache_sub)
def get_membership_cache(self, group_ids=None, is_active=True): """ Build a dict cache with the group membership info. Keyed off the group id and the values are a 2 element list of entity id and entity kind id (same values as the membership model). If no group ids are passed, then all gr...
def all_entities(self, is_active=True): """ Return all the entities in the group. Because groups can contain both individual entities, as well as whole groups of entities, this method acts as a convenient way to get a queryset of all the entities in the group. """ ...
def get_all_entities(self, membership_cache=None, entities_by_kind=None, return_models=False, is_active=True): """ Returns a list of all entity ids in this group or optionally returns a queryset for all entity models. In order to reduce queries for multiple group lookups, it is expected that the...
def add_entity(self, entity, sub_entity_kind=None): """ Add an entity, or sub-entity group to this EntityGroup. :type entity: Entity :param entity: The entity to add. :type sub_entity_kind: Optional EntityKind :param sub_entity_kind: If a sub_entity_kind is given, all ...
def bulk_add_entities(self, entities_and_kinds): """ Add many entities and sub-entity groups to this EntityGroup. :type entities_and_kinds: List of (Entity, EntityKind) pairs. :param entities_and_kinds: A list of entity, entity-kind pairs to add to the group. In the pairs th...
def remove_entity(self, entity, sub_entity_kind=None): """ Remove an entity, or sub-entity group to this EntityGroup. :type entity: Entity :param entity: The entity to remove. :type sub_entity_kind: Optional EntityKind :param sub_entity_kind: If a sub_entity_kind is giv...
def bulk_remove_entities(self, entities_and_kinds): """ Remove many entities and sub-entity groups to this EntityGroup. :type entities_and_kinds: List of (Entity, EntityKind) pairs. :param entities_and_kinds: A list of entity, entity-kind pairs to remove from the group. In t...
def bulk_overwrite(self, entities_and_kinds): """ Update the group to the given entities and sub-entity groups. After this operation, the only members of this EntityGroup will be the given entities, and sub-entity groups. :type entities_and_kinds: List of (Entity, EntityKind) p...
def generate_slug(value): "A copy of spectator.core.models.SluggedModelMixin._generate_slug()" alphabet = 'abcdefghijkmnopqrstuvwxyz23456789' salt = 'Django Spectator' if hasattr(settings, 'SPECTATOR_SLUG_ALPHABET'): alphabet = settings.SPECTATOR_SLUG_ALPHABET if hasattr(settings, 'SPECTAT...
def set_slug(apps, schema_editor, class_name): """ Create a slug for each Work already in the DB. """ Cls = apps.get_model('spectator_events', class_name) for obj in Cls.objects.all(): obj.slug = generate_slug(obj.pk) obj.save(update_fields=['slug'])
def kind_name(self): "e.g. 'Gig' or 'Movie'." return {k:v for (k,v) in self.KIND_CHOICES}[self.kind]
def get_kind_name_plural(kind): "e.g. 'Gigs' or 'Movies'." if kind in ['comedy', 'cinema', 'dance', 'theatre']: return kind.title() elif kind == 'museum': return 'Galleries/Museums' else: return '{}s'.format(Event.get_kind_name(kind))
def get_kinds_data(): """ Returns a dict of all the data about the kinds, keyed to the kind value. e.g: { 'gig': { 'name': 'Gig', 'slug': 'gigs', 'name_plural': 'Gigs', }, # et...
def get_list_url(self, kind_slug=None): """ Get the list URL for this Work. You can also pass a kind_slug in (e.g. 'movies') and it will use that instead of the Work's kind_slug. (Why? Useful in views. Or tests of views, at least.) """ if kind_slug is None: ...
def convert_descriptor_and_rows(self, descriptor, rows): """Convert descriptor and rows to Pandas """ # Prepare primary_key = None schema = tableschema.Schema(descriptor) if len(schema.primary_key) == 1: primary_key = schema.primary_key[0] elif len(sc...
def convert_type(self, type): """Convert type to Pandas """ # Mapping mapping = { 'any': np.dtype('O'), 'array': np.dtype(list), 'boolean': np.dtype(bool), 'date': np.dtype('O'), 'datetime': np.dtype('datetime64[ns]'), ...
def restore_descriptor(self, dataframe): """Restore descriptor from Pandas """ # Prepare fields = [] primary_key = None # Primary key if dataframe.index.name: field_type = self.restore_type(dataframe.index.dtype) field = { ...
def restore_row(self, row, schema, pk): """Restore row from Pandas """ result = [] for field in schema.fields: if schema.primary_key and schema.primary_key[0] == field.name: if field.type == 'number' and np.isnan(pk): pk = None ...
def restore_type(self, dtype, sample=None): """Restore type from Pandas """ # Pandas types if pdc.is_bool_dtype(dtype): return 'boolean' elif pdc.is_datetime64_any_dtype(dtype): return 'datetime' elif pdc.is_integer_dtype(dtype): retur...
def change_object_link_card(obj, perms): """ If the user has permission to change `obj`, show a link to its Admin page. obj -- An object like Movie, Play, ClassicalWork, Publication, etc. perms -- The `perms` object that it's the template. """ # eg: 'movie' or 'classicalwork': name = obj.__c...
def domain_urlize(value): """ Returns an HTML link to the supplied URL, but only using the domain as the text. Strips 'www.' from the start of the domain, if present. e.g. if `my_url` is 'http://www.example.org/foo/' then: {{ my_url|domain_urlize }} returns: <a href="http://www.ex...
def current_url_name(context): """ Returns the name of the current URL, namespaced, or False. Example usage: {% current_url_name as url_name %} <a href="#"{% if url_name == 'myapp:home' %} class="active"{% endif %}">Home</a> """ url_name = False if context.request.resolver_ma...
def query_string(context, key, value): """ For adding/replacing a key=value pair to the GET string for a URL. eg, if we're viewing ?p=3 and we do {% query_string order 'taken' %} then this returns "p=3&order=taken" And, if we're viewing ?p=3&order=uploaded and we do the same thing, we get the ...
def most_read_creators_card(num=10): """ Displays a card showing the Creators who have the most Readings associated with their Publications. In spectator_core tags, rather than spectator_reading so it can still be used on core pages, even if spectator_reading isn't installed. """ if spectat...
def most_visited_venues_card(num=10): """ Displays a card showing the Venues that have the most Events. In spectator_core tags, rather than spectator_events so it can still be used on core pages, even if spectator_events isn't installed. """ if spectator_apps.is_enabled('events'): obje...
def has_urls(self): "Handy for templates." if self.isbn_uk or self.isbn_us or self.official_url or self.notes_url: return True else: return False
def get_entity(package, entity): """ eg, get_entity('spectator', 'version') returns `__version__` value in `__init__.py`. """ init_py = open(os.path.join(package, '__init__.py')).read() find = "__%s__ = ['\"]([^'\"]+)['\"]" % entity return re.search(find, init_py).group(1)
def get_queryset(self): "Reduce the number of queries and speed things up." qs = super().get_queryset() qs = qs.select_related('publication__series') \ .prefetch_related('publication__roles__creator') return qs
def set_slug(apps, schema_editor): """ Create a slug for each Creator already in the DB. """ Creator = apps.get_model('spectator_core', 'Creator') for c in Creator.objects.all(): c.slug = generate_slug(c.pk) c.save(update_fields=['slug'])
def forwards(apps, schema_editor): """ Copy the ClassicalWork and DancePiece data to use the new through models. """ Event = apps.get_model('spectator_events', 'Event') ClassicalWorkSelection = apps.get_model( 'spectator_events', 'ClassicalWorkSelection') DancePie...
def forwards(apps, schema_editor): """ Set the venue_name field of all Events that have a Venue. """ Event = apps.get_model('spectator_events', 'Event') for event in Event.objects.all(): if event.venue is not None: event.venue_name = event.venue.name event.save()
def forwards(apps, schema_editor): """ Migrate all 'exhibition' Events to the new 'museum' Event kind. """ Event = apps.get_model('spectator_events', 'Event') for ev in Event.objects.filter(kind='exhibition'): ev.kind = 'museum' ev.save()
def truncate_string(text, strip_html=True, chars=255, truncate='…', at_word_boundary=False): """Truncate a string to a certain length, removing line breaks and mutliple spaces, optionally removing HTML, and appending a 'truncate' string. Keyword arguments: strip_html -- boolean. chars -- Number of ...
def chartify(qs, score_field, cutoff=0, ensure_chartiness=True): """ Given a QuerySet it will go through and add a `chart_position` property to each object returning a list of the objects. If adjacent objects have the same 'score' (based on `score_field`) then they will have the same `chart_positio...
def by_visits(self, event_kind=None): """ Gets Venues in order of how many Events have been held there. Adds a `num_visits` field to each one. event_kind filters by kind of Event, e.g. 'theatre', 'cinema', etc. """ qs = self.get_queryset() if event_kind is not N...
def by_views(self, kind=None): """ Gets Works in order of how many times they've been attached to Events. kind is the kind of Work, e.g. 'play', 'movie', etc. """ qs = self.get_queryset() if kind is not None: qs = qs.filter(kind=kind) qs = q...
def naturalize_thing(self, string): """ Make a naturalized version of a general string, not a person's name. e.g., title of a book, a band's name, etc. string -- a lowercase string. """ # Things we want to move to the back of the string: articles = [ ...