jenkins-bot merged this change.
[FEAT] Introduce WikibaseEntity class
This class should be base class for all classes
which hold some data on a Wikibase repository.
First step for supporting lexicographical data
and structured data on Commons.
For now, it doesn't hold any data and doesn't communicate
with API at all.
This patch also includes several refactorings, bugfixes
and code cleanup.
Bug: T189321
Change-Id: If9661a48fa899a5544fc403d0d7c0764e2bd9413
---
M pywikibot/page.py
1 file changed, 193 insertions(+), 117 deletions(-)
diff --git a/pywikibot/page.py b/pywikibot/page.py
index f93dbd9..48f6789 100644
--- a/pywikibot/page.py
+++ b/pywikibot/page.py
@@ -3706,7 +3706,104 @@
return self.isRegistered() and 'bot' not in self.groups()
-class WikibasePage(BasePage):
+class WikibaseEntity(object):
+
+ """
+ The base interface for Wikibase entities.
+
+ Each entity is identified by a data repository it belongs to
+ and an identifier.
+ """
+
+ def __init__(self, repo, id_=None):
+ """
+ Initializer.
+
+ @param repo: Entity repository.
+ @type repo: DataSite
+ @param id_: Entity identifier.
+ @type id_: str or None, -1 and None mean non-existing
+ """
+ self.repo = repo
+ self.id = id_ if id_ is not None else '-1'
+ if self.id != '-1' and not self.is_valid_id(self.id):
+ raise pywikibot.InvalidTitle(
+ "'%s' is not a valid %s page title"
+ % (self.id, self.entity_type))
+
+ def __repr__(self):
+ if self.id != '-1':
+ return 'pywikibot.page.{0}({1!r}, {2!r})'.format(
+ self.__class__.__name__, self.repo, self.id)
+ else:
+ return 'pywikibot.page.{0}({1!r})'.format(
+ self.__class__.__name__, self.repo)
+
+ @classmethod
+ def is_valid_id(cls, entity_id):
+ """
+ Whether the string can be a valid id of the entity type.
+
+ @param entity_id: The ID to test.
+ @type entity_id: basestring
+
+ @rtype: bool
+ """
+ if not hasattr(cls, 'title_pattern'):
+ return True
+
+ # todo: use re.fullmatch when Python 3.4+ required
+ return bool(re.match(cls.title_pattern + '$', entity_id))
+
+ def _defined_by(self, singular=False):
+ """
+ Internal function to provide the API parameters to identify the entity.
+
+ An empty dict is returned if the entity has not been created yet.
+
+ @param singular: Whether the parameter names should use the singular
+ form
+ @type singular: bool
+ @return: API parameters
+ @rtype: dict
+ """
+ params = {}
+ if self.id != '-1':
+ if singular:
+ params['id'] = self.id
+ else:
+ params['ids'] = self.id
+ return params
+
+ def getID(self, numeric=False):
+ """
+ Get the identifier of this entity.
+
+ @param numeric: Strip the first letter and return an int
+ @type numeric: bool
+ """
+ if numeric:
+ return int(self.id[1:]) if self.id != '-1' else -1
+ else:
+ return self.id
+
+ def get_data_for_new_entity(self):
+ """
+ Return data required for creation of a new entity.
+
+ Override it if you need.
+
+ @rtype: dict
+ """
+ return {}
+
+ def concept_uri(self):
+ """Return the full concept URI."""
+ # todo: raise when self.id is -1
+ return '{0}{1}'.format(self.repo.concept_base_uri, self.id)
+
+
+class WikibasePage(BasePage, WikibaseEntity):
"""
The base page for the Wikibase extension.
@@ -3784,12 +3881,12 @@
self._namespace = entity_type_ns
kwargs['ns'] = self._namespace.id
- super(WikibasePage, self).__init__(site, title, **kwargs)
+ BasePage.__init__(self, site, title, **kwargs)
# If a title was not provided,
# avoid checks which may cause an exception.
if not title:
- self.repo = site
+ WikibaseEntity.__init__(self, site)
return
if self._namespace:
@@ -3808,66 +3905,14 @@
raise ValueError('%r: Namespace "%r" is not valid'
% (self.site, ns))
- # .site forces a parse of the Link title to determine site
- self.repo = self.site
- # Link.__init__, called from Page.__init__, has cleaned the title
- # stripping whitespace and uppercasing the first letter according
- # to the namespace case=first-letter.
- self.id = self._link.title
- if not self.is_valid_id(self.id):
- raise pywikibot.InvalidTitle(
- "'%s' is not a valid %s page title"
- % (self.id, self.entity_type))
-
- def _defined_by(self, singular=False):
- """
- Internal function to provide the API parameters to identify the entity.
-
- The API parameters may be 'id' if the ItemPage has one,
- or 'site'&'title' if instantiated via ItemPage.fromPage with
- lazy_load enabled.
-
- Once an item's "p/q##" is looked up, that will be used for all future
- requests.
-
- An empty dict is returned if the ItemPage is instantiated without
- either ID (internally it has id = '-1') or site&title.
-
- @param singular: Whether the parameter names should use the singular
- form
- @type singular: bool
- @return: API parameters
- @rtype: dict
- """
- params = {}
- if singular:
- id = 'id'
- site = 'site'
- title = 'title'
- else:
- id = 'ids'
- site = 'sites'
- title = 'titles'
-
- lazy_loading_id = not hasattr(self, 'id') and hasattr(self, '_site')
-
- # id overrides all
- if hasattr(self, 'id'):
- if self.id != '-1':
- params[id] = self.id
- elif lazy_loading_id:
- params[site] = self._site.dbName()
- params[title] = self._title
- else:
- # if none of the above applies, this item is in an invalid state
- # which needs to be raise as an exception, but also logged in case
- # an exception handler is catching the generic Error.
- pywikibot.error('%s is in invalid state'
- % self.__class__.__name__)
- raise pywikibot.Error('%s is in invalid state'
- % self.__class__.__name__)
-
- return params
+ WikibaseEntity.__init__(
+ self,
+ # .site forces a parse of the Link title to determine site
+ self.site,
+ # Link.__init__, called from Page.__init__, has cleaned the title
+ # stripping whitespace and uppercasing the first letter according
+ # to the namespace case=first-letter.
+ self._link.title)
def __getattribute__(self, name):
"""Low-level attribute getter. Deprecates lastrevid."""
@@ -3951,6 +3996,7 @@
'{0}.get does not implement var args: {1!r} and {2!r}'.format(
self.__class__, args, kwargs))
+ # todo: this variable is specific to ItemPage
lazy_loading_id = not hasattr(self, 'id') and hasattr(self, '_site')
if force or not hasattr(self, '_content'):
identification = self._defined_by()
@@ -4014,16 +4060,6 @@
'claims': self.claims,
}
- def get_data_for_new_entity(self):
- """
- Return data required for creation of new page.
-
- Override it if you need.
-
- @rtype: dict
- """
- return {}
-
def _diff_to(self, type_key, key_name, value_name, diffto, data):
assert type_key not in data, 'Key type must be defined in data'
source = self._normalizeLanguages(getattr(self, type_key)).copy()
@@ -4047,7 +4083,7 @@
When diffto is provided, JSON representing differences
to the provided data is created.
- @param diffto: JSON containing claim data
+ @param diffto: JSON containing entity data
@type diffto: dict
@rtype: dict
@@ -4109,38 +4145,6 @@
data['claims'] = claims
return data
- def getID(self, numeric=False, force=False):
- """
- Get the entity identifier.
-
- @param numeric: Strip the first letter and return an int
- @type numeric: bool
- @param force: Force an update of new data
- @type force: bool
- """
- if not hasattr(self, 'id') or force:
- self.get(force=force)
- if numeric:
- return int(self.id[1:]) if self.id != '-1' else -1
-
- return self.id
-
- @classmethod
- def is_valid_id(cls, entity_id):
- """
- Whether the string can be a valid id of the entity type.
-
- @param entity_id: The ID to test.
- @type entity_id: basestring
-
- @rtype: bool
- """
- if not hasattr(cls, 'title_pattern'):
- return True
-
- # todo: use re.fullmatch when Python 3.4+ required
- return bool(re.match(cls.title_pattern + '$', entity_id))
-
@property
def latest_revision_id(self):
"""
@@ -4259,6 +4263,7 @@
baserevid=baserevid, **kwargs)
self.latest_revision_id = updates['entity']['lastrevid']
+ # todo: this variable is specific to ItemPage
lazy_loading_id = not hasattr(self, 'id') and hasattr(self, '_site')
if lazy_loading_id or self.id == '-1':
self.__init__(self.site, title=updates['entity']['id'])
@@ -4375,7 +4380,7 @@
_cache_attrs = WikibasePage._cache_attrs + ('sitelinks',)
entity_type = 'item'
- title_pattern = r'(Q[1-9]\d*|-1)'
+ title_pattern = r'Q[1-9]\d*'
def __init__(self, site, title=None, ns=None):
"""
@@ -4406,6 +4411,56 @@
assert self.id == self._link.title
+ def _defined_by(self, singular=False):
+ """
+ Internal function to provide the API parameters to identify the item.
+
+ The API parameters may be 'id' if the ItemPage has one,
+ or 'site'&'title' if instantiated via ItemPage.fromPage with
+ lazy_load enabled.
+
+ Once an item's Q## is looked up, that will be used for all future
+ requests.
+
+ An empty dict is returned if the ItemPage is instantiated without
+ either ID (internally it has id = '-1') or site&title.
+
+ @param singular: Whether the parameter names should use the singular
+ form
+ @type singular: bool
+ @return: API parameters
+ @rtype: dict
+ """
+ params = {}
+ if singular:
+ id = 'id'
+ site = 'site'
+ title = 'title'
+ else:
+ id = 'ids'
+ site = 'sites'
+ title = 'titles'
+
+ lazy_loading_id = not hasattr(self, 'id') and hasattr(self, '_site')
+
+ # id overrides all
+ if hasattr(self, 'id'):
+ if self.id != '-1':
+ params[id] = self.id
+ elif lazy_loading_id:
+ params[site] = self._site.dbName()
+ params[title] = self._title
+ else:
+ # if none of the above applies, this item is in an invalid state
+ # which needs to be raise as an exception, but also logged in case
+ # an exception handler is catching the generic Error.
+ pywikibot.error('%s is in invalid state'
+ % self.__class__.__name__)
+ raise pywikibot.Error('%s is in invalid state'
+ % self.__class__.__name__)
+
+ return params
+
def title(self, **kwargs):
"""
Return ID as title of the ItemPage.
@@ -4440,6 +4495,19 @@
return super(ItemPage, self).title(**kwargs)
+ def getID(self, numeric=False, force=False):
+ """
+ Get the entity identifier.
+
+ @param numeric: Strip the first letter and return an int
+ @type numeric: bool
+ @param force: Force an update of new data
+ @type force: bool
+ """
+ if not hasattr(self, 'id') or force:
+ self.get(force=force)
+ return super(WikibasePage, self).getID(numeric=numeric)
+
@classmethod
def fromPage(cls, page, lazy_load=False):
"""
@@ -4543,11 +4611,6 @@
data['sitelinks'] = self.sitelinks
return data
- @need_version('1.28-wmf.23')
- def concept_uri(self):
- """Return the full concept URI."""
- return '{0}{1}'.format(self.site.concept_base_uri, self.id)
-
def getRedirectTarget(self):
"""Return the redirect target for this page."""
target = super(ItemPage, self).getRedirectTarget()
@@ -4565,7 +4628,7 @@
When diffto is provided, JSON representing differences
to the provided data is created.
- @param diffto: JSON containing claim data
+ @param diffto: JSON containing entity data
@type diffto: dict
@rtype: dict
@@ -4755,9 +4818,11 @@
return self._isredir
return super(ItemPage, self).isRedirectPage()
- # alias for backwards compatibility
- concept_url = redirect_func(concept_uri, old_name='concept_url',
- class_name='ItemPage', since='20170222')
+
+# alias for backwards compatibility
+ItemPage.concept_url = redirect_func(
+ ItemPage.concept_uri, old_name='concept_url', class_name='ItemPage',
+ since='20170222')
class Property(object):
@@ -4872,7 +4937,7 @@
_cache_attrs = WikibasePage._cache_attrs + ('_type',)
entity_type = 'property'
- title_pattern = r'(P[1-9]\d*|-1)'
+ title_pattern = r'P[1-9]\d*'
def __init__(self, source, title=None, datatype=None):
"""
@@ -4932,9 +4997,20 @@
@rtype: Claim
"""
+ # todo: raise when self.id is -1
return Claim(self.site, self.getID(), datatype=self.type,
*args, **kwargs)
+ def getID(self, numeric=False):
+ """
+ Get the identifier of this property.
+
+ @param numeric: Strip the first letter and return an int
+ @type numeric: bool
+ """
+ # enforce this parent's implementation
+ return WikibasePage.getID(self, numeric=numeric)
+
def get_data_for_new_entity(self):
"""Return data required for creation of new property."""
return {'datatype': self.type}
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