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doc/book/devrepo/datamodel/baseschema.rst
author Philippe Pepiot <ph@itsalwaysdns.eu>
Tue, 31 Mar 2020 19:15:03 +0200
changeset 12957 0c973204033a
parent 12539 10159a3d1d72
permissions -rw-r--r--
[server] prevent returning closed cursor to the database pool In since c8c6ad8 init_repository use repo.internal_cnx() instead of repo.system_source.get_connection() so it use the pool and we should not close cursors from the pool before returning it back. Otherwise we may have "connection already closed" error. This bug only trigger when connection-pool-size = 1. Since we are moving to use a dynamic pooler we need to get this fixed. This does not occur with sqlite since the connection wrapper instantiate new cursor everytime, but this occur with other databases.
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9b1b7020d179 [doc/book] an introduction to yams, layout tweaks
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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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* _`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














cubicweb