author | Laurent Peuch <cortex@worlddomination.be> |
Thu, 19 Dec 2019 06:33:49 +0100 | |
changeset 12831 | b1ef9690f357 |
parent 12567 | 26744ad37953 |
permissions | -rw-r--r-- |
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# copyright 2003-2013 LOGILAB S.A. (Paris, FRANCE), all rights reserved. |
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# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr |
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# |
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# This file is part of CubicWeb. |
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# |
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# CubicWeb is free software: you can redistribute it and/or modify it under the |
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# terms of the GNU Lesser General Public License as published by the Free |
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# Software Foundation, either version 2.1 of the License, or (at your option) |
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# any later version. |
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# |
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# CubicWeb is distributed in the hope that it will be useful, but WITHOUT |
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS |
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# FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more |
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# details. |
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# |
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# You should have received a copy of the GNU Lesser General Public License along |
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# with CubicWeb. If not, see <http://www.gnu.org/licenses/>. |
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"""base application's entities class implementation: `AnyEntity`""" |
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from logilab.common.decorators import classproperty |
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from cubicweb import Unauthorized |
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from cubicweb.entity import Entity |
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class AnyEntity(Entity): |
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"""an entity instance has e_schema automagically set on the class and |
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instances have access to their issuing cursor |
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""" |
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__regid__ = 'Any' |
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@classproperty |
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def cw_etype(cls): |
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"""entity type as a unicode string""" |
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return cls.__regid__ |
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@classmethod |
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def cw_create_url(cls, req, **kwargs): |
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""" return the url of the entity creation form for this entity type""" |
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return req.build_url('add/%s' % cls.__regid__, **kwargs) |
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|
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@classmethod |
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def cw_fti_index_rql_limit(cls, req, limit=1000): |
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"""generate rsets of entities to FT-index |
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By default, each successive result set is limited to 1000 entities |
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""" |
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restrictions = ['X is %s' % cls.__regid__] |
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selected = ['X'] |
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start = 0 |
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for attrschema in sorted(cls.e_schema.indexable_attributes()): |
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varname = attrschema.type.upper() |
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restrictions.append('X %s %s' % (attrschema, varname)) |
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selected.append(varname) |
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while True: |
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q_restrictions = restrictions + ['X eid > %s' % start] |
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rset = req.execute('Any %s ORDERBY X LIMIT %s WHERE %s' % |
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(', '.join(selected), |
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limit, |
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', '.join(q_restrictions))) |
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if rset: |
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start = rset[-1][0] |
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yield rset |
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else: |
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break |
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# meta data api ########################################################### |
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def dc_title(self): |
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return self.cw_adapt_to('IDublinCore').title() |
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def dc_long_title(self): |
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return self.cw_adapt_to('IDublinCore').long_title() |
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def dc_description(self, *args, **kwargs): |
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return self.cw_adapt_to('IDublinCore').description(*args, **kwargs) |
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def dc_authors(self): |
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return self.cw_adapt_to('IDublinCore').authors() |
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def dc_creator(self): |
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return self.cw_adapt_to('IDublinCore').creator() |
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def dc_date(self, *args, **kwargs): |
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return self.cw_adapt_to('IDublinCore').date(*args, **kwargs) |
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def dc_type(self, *args, **kwargs): |
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return self.cw_adapt_to('IDublinCore').type(*args, **kwargs) |
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def dc_language(self): |
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return self.cw_adapt_to('IDublinCore').language() |
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@property |
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def creator(self): |
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"""return the CWUser entity which has created this entity, or None if |
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unknown or if the curent user doesn't has access to this euser |
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""" |
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try: |
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return self.created_by[0] |
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except (Unauthorized, IndexError): |
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return None |
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# abstractions making the whole things (well, some at least) working ###### |
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def sortvalue(self, rtype=None): |
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"""return a value which can be used to sort this entity or given |
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entity's attribute |
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""" |
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if rtype is None: |
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return self.dc_title().lower() |
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value = self.cw_attr_value(rtype) |
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# do not restrict to `str` because Bytes will return a `str` value |
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if isinstance(value, str): |
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return self.printable_value(rtype, format='text/plain').lower() |
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return value |
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def fetch_config(fetchattrs, mainattr=None, pclass=AnyEntity, order='ASC'): |
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"""function to ease basic configuration of an entity class ORM. Basic usage |
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is: |
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[entity] upgrade fetch_[unrelated_]order to benefit from changes introduced in 3.14 (closes #1942758)
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.. sourcecode:: python |
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[entity] upgrade fetch_[unrelated_]order to benefit from changes introduced in 3.14 (closes #1942758)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
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[entity] upgrade fetch_[unrelated_]order to benefit from changes introduced in 3.14 (closes #1942758)
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class MyEntity(AnyEntity): |
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[entity] upgrade fetch_[unrelated_]order to benefit from changes introduced in 3.14 (closes #1942758)
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fetch_attrs, cw_fetch_order = fetch_config(['attr1', 'attr2']) |
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[entity] upgrade fetch_[unrelated_]order to benefit from changes introduced in 3.14 (closes #1942758)
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# uncomment line below if you want the same sorting for 'unrelated' entities |
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[entity] upgrade fetch_[unrelated_]order to benefit from changes introduced in 3.14 (closes #1942758)
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# cw_fetch_unrelated_order = cw_fetch_order |
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[entity] upgrade fetch_[unrelated_]order to benefit from changes introduced in 3.14 (closes #1942758)
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parents:
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[entity] upgrade fetch_[unrelated_]order to benefit from changes introduced in 3.14 (closes #1942758)
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Using this, when using ORM methods retrieving this type of entity, 'attr1' |
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[entity] upgrade fetch_[unrelated_]order to benefit from changes introduced in 3.14 (closes #1942758)
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and 'attr2' will be automatically prefetched and results will be sorted on |
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[entity] upgrade fetch_[unrelated_]order to benefit from changes introduced in 3.14 (closes #1942758)
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'attr1' ascending (ie the first attribute in the list). |
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[entity] upgrade fetch_[unrelated_]order to benefit from changes introduced in 3.14 (closes #1942758)
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parents:
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[entity] upgrade fetch_[unrelated_]order to benefit from changes introduced in 3.14 (closes #1942758)
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This function will automatically add to fetched attributes those defined in |
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[entity] upgrade fetch_[unrelated_]order to benefit from changes introduced in 3.14 (closes #1942758)
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parents:
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parent class given using the `pclass` argument. |
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[entity] upgrade fetch_[unrelated_]order to benefit from changes introduced in 3.14 (closes #1942758)
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parents:
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[entity] upgrade fetch_[unrelated_]order to benefit from changes introduced in 3.14 (closes #1942758)
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parents:
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Also, You can use `mainattr` and `order` argument to have a different |
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[entity] upgrade fetch_[unrelated_]order to benefit from changes introduced in 3.14 (closes #1942758)
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sorting. |
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[entity] upgrade fetch_[unrelated_]order to benefit from changes introduced in 3.14 (closes #1942758)
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""" |
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if pclass is not None: |
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fetchattrs += pclass.fetch_attrs |
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if mainattr is None: |
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mainattr = fetchattrs[0] |
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@classmethod |
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[entity] upgrade fetch_[unrelated_]order to benefit from changes introduced in 3.14 (closes #1942758)
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def fetch_order(cls, select, attr, var): |
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if attr == mainattr: |
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select.add_sort_var(var, order=='ASC') |
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return fetchattrs, fetch_order |