schemas/base.py
author Sylvain Thénault <sylvain.thenault@logilab.fr>
Mon, 19 Sep 2011 14:22:28 +0200
changeset 7808 d90338624ea0
parent 7797 a71618a75b53
child 7845 2172978be237
permissions -rw-r--r--
[security view] slight changes to make things clearer
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# copyright 2003-2011 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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"""core CubicWeb schema, but not necessary at bootstrap time"""
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__docformat__ = "restructuredtext en"
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_ = unicode
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from yams.buildobjs import (EntityType, RelationType, RelationDefinition,
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                            SubjectRelation,
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                            String, Datetime, Password, Interval, Boolean)
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from cubicweb.schema import (
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    RQLConstraint, WorkflowableEntityType, ERQLExpression, RRQLExpression,
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    PUB_SYSTEM_ENTITY_PERMS, PUB_SYSTEM_REL_PERMS, PUB_SYSTEM_ATTR_PERMS)
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class CWUser(WorkflowableEntityType):
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    """define a CubicWeb user"""
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    __permissions__ = {
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        'read':   ('managers', 'users', ERQLExpression('X identity U')),
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        'add':    ('managers',),
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        'delete': ('managers',),
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        'update': ('managers', ERQLExpression('X identity U, NOT U in_group G, G name "guests"'),),
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        }
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    login     = String(required=True, unique=True, maxsize=64,
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                       description=_('unique identifier used to connect to the application'))
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    upassword = Password(required=True) # password is a reserved word for mysql
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    firstname = String(maxsize=64)
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    surname   = String(maxsize=64)
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    last_login_time  = Datetime(description=_('last connection date'))
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    in_group = SubjectRelation('CWGroup', cardinality='+*',
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                               constraints=[RQLConstraint('NOT O name "owners"')],
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                               description=_('groups grant permissions to the user'))
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class EmailAddress(EntityType):
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    """an electronic mail address associated to a short alias"""
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    __permissions__ = {
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        'read':   ('managers', 'users', 'guests',), # XXX if P use_email X, U has_read_permission P
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        'add':    ('managers', 'users',),
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        'delete': ('managers', 'owners', ERQLExpression('P use_email X, U has_update_permission P')),
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        'update': ('managers', 'owners', ERQLExpression('P use_email X, U has_update_permission P')),
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        }
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    alias   = String(fulltextindexed=True, maxsize=56)
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    address = String(required=True,  fulltextindexed=True,
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                     indexed=True, unique=True, maxsize=128)
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    prefered_form = SubjectRelation('EmailAddress', cardinality='?*',
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                                    description=_('when multiple addresses are equivalent \
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(such as python-projects@logilab.org and python-projects@lists.logilab.org), set this \
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to indicate which is the preferred form.'))
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class use_email(RelationType):
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    fulltext_container = 'subject'
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class use_email_relation(RelationDefinition):
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    """user's email account"""
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    name = "use_email"
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    __permissions__ = {
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        'read':   ('managers', 'users', 'guests',),
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        'add':    ('managers', RRQLExpression('U has_update_permission S'),),
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        'delete': ('managers', RRQLExpression('U has_update_permission S'),),
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        }
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    subject = "CWUser"
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    object = "EmailAddress"
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    cardinality = '*?'
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    composite = 'subject'
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class primary_email(RelationDefinition):
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    """the prefered email"""
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    __permissions__ = {
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        'read':   ('managers', 'users', 'guests',),
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        'add':    ('managers', RRQLExpression('U has_update_permission S'),),
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        'delete': ('managers', RRQLExpression('U has_update_permission S'),),
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        }
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    subject = "CWUser"
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    object = "EmailAddress"
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    cardinality = '??'
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    constraints= [RQLConstraint('S use_email O')]
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class prefered_form(RelationType):
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    __permissions__ = {
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        'read':   ('managers', 'users', 'guests',),
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        # XXX should have update __permissions__ on both subject and object,
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        #     though by doing this we will probably have no way to add
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        #     this relation in the web ui. The easiest way to acheive this
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        #     is probably to be able to have "U has_update_permission O" as
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        #     RQLConstraint of the relation definition, though this is not yet
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        #     possible
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        'add':    ('managers', RRQLExpression('U has_update_permission S'),),
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        'delete': ('managers', RRQLExpression('U has_update_permission S'),),
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        }
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class in_group(RelationType):
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    """core relation indicating a user's groups"""
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    __permissions__ = PUB_SYSTEM_REL_PERMS
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class owned_by(RelationType):
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    """core relation indicating owners of an entity. This relation
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    implicitly put the owner into the owners group for the entity
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    """
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    __permissions__ = {
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        'read':   ('managers', 'users', 'guests'),
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        'add':    ('managers', RRQLExpression('S owned_by U'),),
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        'delete': ('managers', RRQLExpression('S owned_by U'),),
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        }
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    # 0..n cardinality for entities created by internal session (no attached user)
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    # and to support later deletion of a user which has created some entities
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    cardinality = '**'
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    subject = '*'
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    object = 'CWUser'
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class created_by(RelationType):
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    """core relation indicating the original creator of an entity"""
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    __permissions__ = {
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        'read':   ('managers', 'users', 'guests'),
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        'add':    ('managers',),
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        'delete': ('managers',),
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        }
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    # 0..1 cardinality for entities created by internal session (no attached user)
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    # and to support later deletion of a user which has created some entities
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    cardinality = '?*'
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    subject = '*'
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    object = 'CWUser'
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class creation_date(RelationType):
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    """creation time of an entity"""
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    __permissions__ = PUB_SYSTEM_ATTR_PERMS
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    cardinality = '11'
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    subject = '*'
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    object = 'Datetime'
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class modification_date(RelationType):
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    """latest modification time of an entity"""
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    __permissions__ = PUB_SYSTEM_ATTR_PERMS
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    cardinality = '11'
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    subject = '*'
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    object = 'Datetime'
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class cwuri(RelationType):
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    """internal entity uri"""
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    __permissions__ = PUB_SYSTEM_ATTR_PERMS
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    cardinality = '11'
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    subject = '*'
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    object = 'String'
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0
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# XXX find a better relation name
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class for_user(RelationType):
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    """link a property to the user which want this property customization. Unless
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    you're a site manager, this relation will be handled automatically.
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    """
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    __permissions__ = {
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        'read':   ('managers', 'users', 'guests'),
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        'add':    ('managers',),
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        'delete': ('managers',),
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        }
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    inlined = True
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    subject = 'CWProperty'
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    object = 'CWUser'
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    composite = 'object'
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    cardinality = '?*'
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class ExternalUri(EntityType):
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    """a URI representing an object in external data store"""
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    uri = String(required=True, unique=True, maxsize=256,
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                 description=_('the URI of the object'))
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class same_as(RelationType):
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    """generic relation to specify that an external entity represent the same
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    object as a local one:
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       http://www.w3.org/TR/owl-ref/#sameAs-def
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    """
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    #NOTE: You'll have to explicitly declare which entity types can have a
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    #same_as relation
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    __permissions__ = {
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        'read':   ('managers', 'users', 'guests',),
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        'add':    ('managers', 'users'),
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        'delete': ('managers', 'owners'),
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        }
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    cardinality = '**'
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    symmetric = True
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    # NOTE: the 'object = ExternalUri' declaration will still be mandatory
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    #       in the cube's schema.
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    object = 'ExternalUri'
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class CWCache(EntityType):
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    """a simple cache entity characterized by a name and
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    a validity date.
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    The target application is responsible for updating timestamp
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    when necessary to invalidate the cache (typically in hooks).
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    Also, checkout the AppObject.get_cache() method.
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    """
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    # XXX only handle by hooks, shouldn't be readable/editable at all through
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    # the ui and so no permissions should be granted, no?
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    __permissions__ = {
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        'read':   ('managers', 'users', 'guests'),
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        'add':    ('managers',),
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        'update': ('managers', 'users',), # XXX
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        'delete': ('managers',),
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        }
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    name = String(required=True, unique=True, maxsize=128,
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                  description=_('name of the cache'))
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    timestamp = Datetime(default='NOW')
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class CWSource(EntityType):
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    __permissions__ = {
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        'read':   ('managers', 'users', 'guests'),
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        'add':    ('managers',),
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        'update': ('managers',),
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        'delete': ('managers',),
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        }
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    name = String(required=True, unique=True, maxsize=128,
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                  description=_('name of the source'))
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    type = String(required=True, maxsize=20, description=_('type of the source'))
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    config = String(description=_('source\'s configuration. One key=value per '
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                                  'line, authorized keys depending on the '
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                                  'source\'s type'),
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                    __permissions__={
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                        'read':   ('managers',),
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                        'update': ('managers',),
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                        })
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    # put this here and not in a subclass even if it's only for some sources
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    # since having subclasses on generic relation (cw_source) double the number
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    # of rdef in the schema, and make ms planning harder since queries solutions
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    # may changes when sources are specified
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    url = String(description=_('URLs from which content will be imported. You can put one url per line'))
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    parser = String(description=_('parser to use to extract entities from content retrieved at given URLs.'))
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    latest_retrieval = Datetime(description=_('latest synchronization time'))
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    synchronizing = Boolean(description=_('currently in synchronization'),
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                            default=False)
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ENTITY_MANAGERS_PERMISSIONS = {
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    'read':   ('managers',),
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    'add':    ('managers',),
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    'update': ('managers',),
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    'delete': ('managers',),
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    }
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RELATION_MANAGERS_PERMISSIONS = {
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    'read':   ('managers',),
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    'add':    ('managers',),
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    'delete': ('managers',),
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    }
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class CWSourceHostConfig(EntityType):
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    __permissions__ = ENTITY_MANAGERS_PERMISSIONS
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    __unique_together__ = [('match_host', 'cw_host_config_of')]
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    match_host = String(required=True, maxsize=128,
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                        description=_('regexp matching host(s) to which this config applies'))
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    config = String(required=True,
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                    description=_('Source\'s configuration for a particular host. '
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                                  'One key=value per line, authorized keys '
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                                  'depending on the source\'s type, overriding '
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                                  'values defined on the source.'),
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                    __permissions__={
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                        'read':   ('managers',),
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                        'update': ('managers',),
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                        })
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class cw_host_config_of(RelationDefinition):
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    __permissions__ = RELATION_MANAGERS_PERMISSIONS
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    subject = 'CWSourceHostConfig'
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    object = 'CWSource'
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    cardinality = '1*'
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    composite = 'object'
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    inlined = True
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class cw_source(RelationDefinition):
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    __permissions__ = {
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        'read':   ('managers', 'users', 'guests'),
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        'add':    ('managers',),
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        'delete': ('managers',),
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        }
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    subject = '*'
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    object = 'CWSource'
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    cardinality = '1*'
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    composite = 'object'
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class CWSourceSchemaConfig(EntityType):
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    __permissions__ = ENTITY_MANAGERS_PERMISSIONS
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    __unique_together__ = [('cw_for_source', 'cw_schema')]
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    cw_for_source = SubjectRelation(
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        'CWSource', inlined=True, cardinality='1*', composite='object',
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        __permissions__=RELATION_MANAGERS_PERMISSIONS)
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    options = String(description=_('allowed options depends on the source type'))
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class rtype_cw_schema(RelationDefinition):
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    __permissions__ = RELATION_MANAGERS_PERMISSIONS
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    name = 'cw_schema'
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    subject = 'CWSourceSchemaConfig'
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    object = ('CWEType', 'CWRType')
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    inlined = True
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    cardinality = '1*'
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    composite = 'object'
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    constraints = [RQLConstraint('NOT O final TRUE')]
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class rdef_cw_schema(RelationDefinition):
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    __permissions__ = RELATION_MANAGERS_PERMISSIONS
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    name = 'cw_schema'
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    subject = 'CWSourceSchemaConfig'
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    object = 'CWRelation'
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    inlined = True
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    cardinality = '1*'
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    composite = 'object'
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# "abtract" relation types, no definition in cubicweb itself ###################
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class identical_to(RelationType):
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    """identical to"""
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    symmetric = True
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    __permissions__ = {
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        'read':   ('managers', 'users', 'guests',),
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        # XXX should have update __permissions__ on both subject and object,
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        #     though by doing this we will probably have no way to add
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        #     this relation in the web ui. The easiest way to acheive this
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        #     is probably to be able to have "U has_update_permission O" as
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        #     RQLConstraint of the relation definition, though this is not yet
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        #     possible
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        'add':    ('managers', RRQLExpression('U has_update_permission S'),),
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        'delete': ('managers', RRQLExpression('U has_update_permission S'),),
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        }
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class see_also(RelationType):
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    """generic relation to link one entity to another"""
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    symmetric = True
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    __permissions__ = {
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        'read':   ('managers', 'users', 'guests',),
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        'add':    ('managers', RRQLExpression('U has_update_permission S'),),
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        'delete': ('managers', RRQLExpression('U has_update_permission S'),),
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        }
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