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misc/migration/3.7.0_Any.py
author Sylvain Thénault <sylvain.thenault@logilab.fr>
Thu, 20 May 2010 20:47:55 +0200
changeset 5556 9ab2b4c74baf
parent 4913 083b4d454192
permissions -rw-r--r--
[entity] introduce a new 'adapters' registry This changeset introduces the notion in adapters (as in Zope Component Architecture) in a cubicweb way, eg using a specific registry of appobjects. This allows nicer code structure, by avoid clutering entity classes and moving code usually specific to a place of the ui (or something else) together with the code that use the interface. We don't use actual interface anymore, they are implied by adapters (which may be abstract), whose reg id is an interface name. Appobjects that used to 'implements(IFace)' should now be rewritten by: * coding an IFaceAdapter(EntityAdapter) defining (implementing if desired) the interface, usually with __regid__ = 'IFace' * use "adaptable('IFace')" as selector instead Also, the implements_adapter_compat decorator eases backward compatibility with adapter's methods that may still be found on entities implementing the interface. Notice that unlike ZCA, we don't support automatic adapters chain (yagni?). All interfaces defined in cubicweb have been turned into adapters, also some new ones have been introduced to cleanup Entity / AnyEntity classes namespace. At the end, the pluggable mixins mecanism should disappear in favor of adapters as well.
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typemap = repo.system_source.dbhelper.TYPE_MAPPING
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sqls = """
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CREATE TABLE transactions (
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  tx_uuid CHAR(32) PRIMARY KEY NOT NULL,
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  tx_user INTEGER NOT NULL,
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  tx_time %s NOT NULL
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);;
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CREATE INDEX transactions_tx_user_idx ON transactions(tx_user);;
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CREATE TABLE tx_entity_actions (












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  tx_uuid CHAR(32) REFERENCES transactions(tx_uuid) ON DELETE CASCADE,












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  txa_action CHAR(1) NOT NULL,












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  txa_public %s NOT NULL,












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  txa_order INTEGER,












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  eid INTEGER NOT NULL,












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  etype VARCHAR(64) NOT NULL,












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  changes %s












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);;












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CREATE INDEX tx_entity_actions_txa_action_idx ON tx_entity_actions(txa_action);;












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CREATE INDEX tx_entity_actions_txa_public_idx ON tx_entity_actions(txa_public);;












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CREATE INDEX tx_entity_actions_eid_idx ON tx_entity_actions(eid);;












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CREATE INDEX tx_entity_actions_etype_idx ON tx_entity_actions(etype);;












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CREATE TABLE tx_relation_actions (












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  tx_uuid CHAR(32) REFERENCES transactions(tx_uuid) ON DELETE CASCADE,












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  txa_action CHAR(1) NOT NULL,












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  txa_public %s NOT NULL,












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  txa_order INTEGER,












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  eid_from INTEGER NOT NULL,












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  eid_to INTEGER NOT NULL,












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  rtype VARCHAR(256) NOT NULL












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);;












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CREATE INDEX tx_relation_actions_txa_action_idx ON tx_relation_actions(txa_action);;












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CREATE INDEX tx_relation_actions_txa_public_idx ON tx_relation_actions(txa_public);;












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CREATE INDEX tx_relation_actions_eid_from_idx ON tx_relation_actions(eid_from);;












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CREATE INDEX tx_relation_actions_eid_to_idx ON tx_relation_actions(eid_to)












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""" % (typemap['Datetime'],












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       typemap['Boolean'], typemap['Bytes'], typemap['Boolean'])












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for statement in sqls.split(';;'):












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    sql(statement)














cubicweb