doc/book/devrepo/datamodel/baseschema.rst
author Julien Cristau <julien.cristau@logilab.fr>
Wed, 17 Feb 2016 14:01:35 +0100
changeset 11246 ceb0e8e9129e
parent 10491 c67bcee93248
child 12539 10159a3d1d72
permissions -rw-r--r--
[migration] add rollback when replace_eid_sequence_with_eid_numrange fails If we get here, the current transaction is aborted, so if we are to assume everything is fine and continue we need to rollback first.
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.. _pre_defined_entity_types:
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Pre-defined entities in the library
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-----------------------------------
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The library defines a set of entity schemas that are required by the system
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or commonly used in *CubicWeb* instances.
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Entity types used to store the schema
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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* _`CWEType`, entity type
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* _`CWRType`, relation type
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* _`CWRelation`, relation definition
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* _`CWAttribute`, attribute relation definition
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* _`CWConstraint`,  `CWConstraintType`, `RQLExpression`
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Entity types used to manage users and permissions
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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* _`CWUser`, system users
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* _`CWGroup`, users groups
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Entity types used to manage workflows
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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* :ref:`Workflow <Workflow>`, workflow entity, linked to some entity types which may use this workflow
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* _`State`, workflow state
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* _`Transition`, workflow transition
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* _`TrInfo`, record of a transition trafic for an entity
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Other entity types
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~~~~~~~~~~~~~~~~~~
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* _`CWCache`, cache entities used to improve performances
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* _`CWProperty`, used to configure the instance
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* _`EmailAddress`, email address, used by the system to send notifications
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  to the users and also used by others optionnals schemas
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* _`Bookmark`, an entity type used to allow a user to customize his links within
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  the instance
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* _`ExternalUri`, used for semantic web site to indicate that an entity is the
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  same as another from an external site