"""core CubicWeb schema necessary for bootstrapping the actual instance's schema
:organization: Logilab
:copyright: 2001-2009 LOGILAB S.A. (Paris, FRANCE), license is LGPL v2.
:contact: http://www.logilab.fr/ -- mailto:contact@logilab.fr
:license: GNU Lesser General Public License, v2.1 - http://www.gnu.org/licenses
"""
__docformat__ = "restructuredtext en"
_ = unicode
from yams.buildobjs import (EntityType, RelationType, SubjectRelation,
ObjectRelation, RichString, String, Boolean, Int)
from cubicweb.schema import RQLConstraint
from cubicweb.schemas import META_ETYPE_PERMS, META_RTYPE_PERMS
# not restricted since as "is" is handled as other relations, guests need
# access to this
class CWEType(EntityType):
"""define an entity type, used to build the instance schema"""
permissions = META_ETYPE_PERMS
name = String(required=True, indexed=True, internationalizable=True,
unique=True, maxsize=64)
description = RichString(internationalizable=True,
description=_('semantic description of this entity type'))
# necessary to filter using RQL
final = Boolean(description=_('automatic'))
class CWRType(EntityType):
"""define a relation type, used to build the instance schema"""
permissions = META_ETYPE_PERMS
name = String(required=True, indexed=True, internationalizable=True,
unique=True, maxsize=64)
description = RichString(internationalizable=True,
description=_('semantic description of this relation type'))
symetric = Boolean(description=_('is this relation equivalent in both direction ?'))
inlined = Boolean(description=_('is this relation physically inlined? you should know what you\'re doing if you are changing this!'))
fulltext_container = String(description=_('if full text content of subject/object entity '
'should be added to other side entity (the container).'),
vocabulary=('', _('subject'), _('object')),
maxsize=8, default=None)
final = Boolean(description=_('automatic'))
class CWAttribute(EntityType):
"""define a final relation: link a final relation type from a non final
entity to a final entity type.
used to build the instance schema
"""
permissions = META_ETYPE_PERMS
relation_type = SubjectRelation('CWRType', cardinality='1*',
constraints=[RQLConstraint('O final TRUE')],
composite='object')
from_entity = SubjectRelation('CWEType', cardinality='1*',
constraints=[RQLConstraint('O final FALSE')],
composite='object')
to_entity = SubjectRelation('CWEType', cardinality='1*',
constraints=[RQLConstraint('O final TRUE')],
composite='object')
constrained_by = SubjectRelation('CWConstraint', cardinality='*1', composite='subject')
cardinality = String(maxsize=2, internationalizable=True,
vocabulary=[_('?1'), _('11')],
description=_('subject/object cardinality'))
ordernum = Int(description=('control subject entity\'s relations order'), default=0)
indexed = Boolean(description=_('create an index for quick search on this attribute'))
fulltextindexed = Boolean(description=_('index this attribute\'s value in the plain text index'))
internationalizable = Boolean(description=_('is this attribute\'s value translatable'))
defaultval = String(maxsize=256)
description = RichString(internationalizable=True,
description=_('semantic description of this attribute'))
CARDINALITY_VOCAB = [_('?*'), _('1*'), _('+*'), _('**'),
_('?+'), _('1+'), _('++'), _('*+'),
_('?1'), _('11'), _('+1'), _('*1'),
_('??'), _('1?'), _('+?'), _('*?')]
class CWRelation(EntityType):
"""define a non final relation: link a non final relation type from a non
final entity to a non final entity type.
used to build the instance schema
"""
permissions = META_ETYPE_PERMS
relation_type = SubjectRelation('CWRType', cardinality='1*',
constraints=[RQLConstraint('O final FALSE')],
composite='object')
from_entity = SubjectRelation('CWEType', cardinality='1*',
constraints=[RQLConstraint('O final FALSE')],
composite='object')
to_entity = SubjectRelation('CWEType', cardinality='1*',
constraints=[RQLConstraint('O final FALSE')],
composite='object')
constrained_by = SubjectRelation('CWConstraint', cardinality='*1', composite='subject')
cardinality = String(maxsize=2, internationalizable=True,
vocabulary=CARDINALITY_VOCAB,
description=_('subject/object cardinality'))
ordernum = Int(description=_('control subject entity\'s relations order'),
default=0)
composite = String(description=_('is the subject/object entity of the relation '
'composed of the other ? This implies that when '
'the composite is deleted, composants are also '
'deleted.'),
vocabulary=('', _('subject'), _('object')),
maxsize=8, default=None)
description = RichString(internationalizable=True,
description=_('semantic description of this relation'))
# not restricted since it has to be read when checking allowed transitions
class RQLExpression(EntityType):
"""define a rql expression used to define permissions"""
permissions = META_ETYPE_PERMS
exprtype = String(required=True, vocabulary=['ERQLExpression', 'RRQLExpression'])
mainvars = String(maxsize=8,
description=_('name of the main variables which should be '
'used in the selection if necessary (comma '
'separated)'))
expression = String(required=True,
description=_('restriction part of a rql query. '
'For entity rql expression, X and U are '
'predefined respectivly to the current object and to '
'the request user. For relation rql expression, '
'S, O and U are predefined respectivly to the current '
'relation\'subject, object and to '
'the request user. '))
read_permission = ObjectRelation(('CWEType', 'CWRType'), cardinality='+?', composite='subject',
description=_('rql expression allowing to read entities/relations of this type'))
add_permission = ObjectRelation(('CWEType', 'CWRType'), cardinality='*?', composite='subject',
description=_('rql expression allowing to add entities/relations of this type'))
delete_permission = ObjectRelation(('CWEType', 'CWRType'), cardinality='*?', composite='subject',
description=_('rql expression allowing to delete entities/relations of this type'))
update_permission = ObjectRelation('CWEType', cardinality='*?', composite='subject',
description=_('rql expression allowing to update entities of this type'))
class CWConstraint(EntityType):
"""define a schema constraint"""
permissions = META_ETYPE_PERMS
cstrtype = SubjectRelation('CWConstraintType', cardinality='1*')
value = String(description=_('depends on the constraint type'))
class CWConstraintType(EntityType):
"""define a schema constraint type"""
permissions = META_ETYPE_PERMS
name = String(required=True, indexed=True, internationalizable=True,
unique=True, maxsize=64)
# not restricted since it has to be read when checking allowed transitions
class CWGroup(EntityType):
"""define a CubicWeb users group"""
permissions = META_ETYPE_PERMS
name = String(required=True, indexed=True, internationalizable=True,
unique=True, maxsize=64)
read_permission = ObjectRelation(('CWEType', 'CWRType'), cardinality='+*',
description=_('groups allowed to read entities/relations of this type'))
add_permission = ObjectRelation(('CWEType', 'CWRType'),
description=_('groups allowed to add entities/relations of this type'))
delete_permission = ObjectRelation(('CWEType', 'CWRType'),
description=_('groups allowed to delete entities/relations of this type'))
update_permission = ObjectRelation('CWEType',
description=_('groups allowed to update entities of this type'))
class relation_type(RelationType):
"""link a relation definition to its relation type"""
permissions = META_RTYPE_PERMS
inlined = True
class from_entity(RelationType):
"""link a relation definition to its subject entity type"""
permissions = META_RTYPE_PERMS
inlined = True
class to_entity(RelationType):
"""link a relation definition to its object entity type"""
permissions = META_RTYPE_PERMS
inlined = True
class constrained_by(RelationType):
"""constraints applying on this relation"""
permissions = META_RTYPE_PERMS
class cstrtype(RelationType):
"""constraint factory"""
permissions = META_RTYPE_PERMS
inlined = True
class read_permission(RelationType):
"""core relation giving to a group the permission to read an entity or
relation type
"""
permissions = META_RTYPE_PERMS
class add_permission(RelationType):
"""core relation giving to a group the permission to add an entity or
relation type
"""
permissions = META_RTYPE_PERMS
class delete_permission(RelationType):
"""core relation giving to a group the permission to delete an entity or
relation type
"""
permissions = META_RTYPE_PERMS
class update_permission(RelationType):
"""core relation giving to a group the permission to update an entity type
"""
permissions = META_RTYPE_PERMS
class is_(RelationType):
"""core relation indicating the type of an entity
"""
name = 'is'
# don't explicitly set composite here, this is handled anyway
#composite = 'object'
permissions = {
'read': ('managers', 'users', 'guests'),
'add': (),
'delete': (),
}
cardinality = '1*'
subject = '*'
object = 'CWEType'
class is_instance_of(RelationType):
"""core relation indicating the types (including specialized types)
of an entity
"""
# don't explicitly set composite here, this is handled anyway
#composite = 'object'
permissions = {
'read': ('managers', 'users', 'guests'),
'add': (),
'delete': (),
}
cardinality = '+*'
subject = '*'
object = 'CWEType'
class specializes(RelationType):
name = 'specializes'
permissions = {
'read': ('managers', 'users', 'guests'),
'add': ('managers',),
'delete': ('managers',),
}
cardinality = '?*'
subject = 'CWEType'
object = 'CWEType'