+
−sync_schema_props_perms('defaultval')
+
−
+
−def convert_defaultval(cwattr, default):
+
−    from decimal import Decimal
+
−    import yams
+
−    from cubicweb import Binary
+
−    if default is None:
+
−        return
+
−    atype = cwattr.to_entity[0].name
+
−    if atype == 'Boolean':
+
−        # boolean attributes with default=False were stored as ''
+
−        assert default in ('True', 'False', ''), repr(default)
+
−        default = default == 'True'
+
−    elif atype in ('Int', 'BigInt'):
+
−        default = int(default)
+
−    elif atype == 'Float':
+
−        default = float(default)
+
−    elif atype == 'Decimal':
+
−        default = Decimal(default)
+
−    elif atype in ('Date', 'Datetime', 'TZDatetime', 'Time'):
+
−        try:
+
−            # handle NOW and TODAY, keep them stored as strings
+
−            yams.KEYWORD_MAP[atype][default.upper()]
+
−            default = default.upper()
+
−        except KeyError:
+
−            # otherwise get an actual date or datetime
+
−            default = yams.DATE_FACTORY_MAP[atype](default)
+
−    else:
+
−        assert atype == 'String', atype
+
−        default = unicode(default)
+
−    return Binary.zpickle(default)
+
−
+
−dbh = repo.system_source.dbhelper
+
−driver = config.sources()['system']['db-driver']
+
−
+
−if driver == 'postgres' or driver.startswith('sqlserver'):
+
−
+
−    sql('ALTER TABLE cw_cwattribute ADD new_defaultval %s' % dbh.TYPE_MAPPING['Bytes'])
+
−
+
−    for cwattr in rql('CWAttribute X').entities():
+
−        olddefault = cwattr.defaultval
+
−        if olddefault is not None:
+
−            req = "UPDATE cw_cwattribute SET new_defaultval = %(val)s WHERE cw_eid = %(eid)s"
+
−            args = {'val': dbh.binary_value(convert_defaultval(cwattr, olddefault).getvalue()), 'eid': cwattr.eid}
+
−            sql(req, args, ask_confirm=False)
+
−
+
−    sql('ALTER TABLE cw_cwattribute DROP COLUMN cw_defaultval')
+
−    if config.sources()['system']['db-driver'] == 'postgres':
+
−        sql('ALTER TABLE cw_cwattribute RENAME COLUMN new_defaultval TO cw_defaultval')
+
−    else:
+
−        sql("sp_rename 'cw_cwattribute.new_defaultval', 'cw_defaultval', 'COLUMN'")
+
−
+
−elif driver == 'sqlite':
+
−
+
−    import re
+
−    create = sql("SELECT sql FROM sqlite_master WHERE name = 'cw_CWAttribute'")[0][0]
+
−    create = re.sub('cw_defaultval varchar[^,]*,', 'cw_defaultval bytea,', create, re.I)
+
−    create = re.sub('cw_CWAttribute', 'tmp_cw_CWAttribute', create, re.I)
+
−    sql(create)
+
−    sql("INSERT INTO tmp_cw_CWAttribute SELECT * FROM cw_CWAttribute")
+
−    for cwattr in rql('CWAttribute X').entities():
+
−        olddefault = cwattr.defaultval
+
−        if olddefault is None:
+
−            continue
+
−        req = "UPDATE tmp_cw_CWAttribute SET cw_defaultval = %(val)s WHERE cw_eid = %(eid)s"
+
−        args = {'val': dbh.binary_value(convert_defaultval(cwattr, olddefault).getvalue()),
+
−                'eid': cwattr.eid}
+
−        sql(req, args, ask_confirm=False)
+
−
+
−    sql('DROP TABLE cw_CWAttribute')
+
−    sql('ALTER TABLE tmp_cw_CWAttribute RENAME TO cw_CWAttribute')
+
−
+
−else:
+
−    assert False, 'upgrade not supported on this database backend'
+
−
+
−# Set object type to "Bytes" for CWAttribute's "defaultval" attribute
+
−rql('SET X to_entity B WHERE X is CWAttribute, X from_entity Y, Y name "CWAttribute", '
+
−    'X relation_type Z, Z name "defaultval", B name "Bytes"')
+
−
+
−from yams import buildobjs as ybo
+
−schema.add_relation_def(ybo.RelationDefinition('CWAttribute', 'defaultval', 'Bytes'))
+
−schema.del_relation_def('CWAttribute', 'defaultval', 'String')
+
−
+
−commit()
+
−
+
−
+
−for rschema in schema.relations():
+
−    if rschema.symmetric:
+
−        with session.allow_all_hooks_but('activeintegrity'):
+
−            rql('SET X %(r)s Y WHERE Y %(r)s X, NOT X %(r)s Y' % {'r': rschema.type})
+
−    commit()