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116 lines
4.7 KiB
116 lines
4.7 KiB
# -*- encoding: utf-8 -*-
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##############################################################################
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#
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# OpenERP, Open Source Management Solution
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# This module copyright (C) 2013 Therp BV (<http://therp.nl>)
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# All Rights Reserved
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as
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# published by the Free Software Foundation, either version 3 of the
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# License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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##############################################################################
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from openerp.osv import orm
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from openerp.tools.translate import _
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class ir_model_fields(orm.Model):
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_inherit = 'ir.model.fields'
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def action_unserialize_field(self, cr, uid, ids, context=None):
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step = 1000
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offset = 0
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# Prevent _auto_init to commit the transaction
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# before the data is migrated safely
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commit_org = cr.commit
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cr.commit = lambda *args: None
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try:
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for this in self.browse(cr, uid, ids, context=context):
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pool_obj = self.pool.get(this.model_id.model)
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self.create_database_column(cr, uid, pool_obj, this.name,
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context=context)
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while True:
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ids = pool_obj.search(
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cr, uid,
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[(this.serialization_field_id.name, '!=', '{}')],
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offset=offset * step, limit=step, context=context)
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if not ids:
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break
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for data in pool_obj.read(
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cr, uid, ids,
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[this.serialization_field_id.name],
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context=context):
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self.unserialize_field(
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cr, uid, pool_obj, data,
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this.serialization_field_id.name,
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this.name, context=context)
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offset += 1
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finally:
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cr.commit = commit_org
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return True
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def create_database_column(self, cr, uid, pool_obj, field_name,
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context=None):
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old = pool_obj._columns[field_name]
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if not old.manual:
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raise orm.except_orm(
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_('Error'),
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_('This operation can only be performed on manual fields'))
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if old._type == 'many2many':
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# Cross table name length of manually created many2many
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# fields can easily become too large. Although it would
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# probably work if the table name length was within bounds,
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# this scenario has not been tested because of this limitation.
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raise orm.except_orm(
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_("Error"),
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_("Many2many fields are not supported. See "
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"https://bugs.launchpad.net/openobject-server/+bug/1174078 "
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"for more information"))
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if old._type == 'one2many':
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# How to get a safe field name for the relation field
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# on the target model?
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raise orm.except_orm(
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_("Error"),
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_("One2many fields are not handled yet"))
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# ORM prohibits to change the 'storing system' of the field
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cr.execute("""
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UPDATE ir_model_fields
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SET serialization_field_id = NULL
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WHERE name = %s and model = %s
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""", (field_name, pool_obj._name))
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del pool_obj._columns[field_name]
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pool_obj.__init__(self.pool, cr)
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pool_obj._auto_init(cr, {'update_custom_fields': True})
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def unserialize_field(self, cr, uid, pool_obj, read_record,
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serialization_field_name, field_name,
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context=None):
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serialized_values = read_record[serialization_field_name]
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if field_name not in serialized_values:
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return False
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value = serialized_values.pop(field_name)
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if pool_obj._columns[field_name]._type in ('many2many', 'one2many'):
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value = [(6, 0, value)]
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return pool_obj.write(
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cr, uid, read_record['id'],
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{
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field_name: value,
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serialization_field_name: serialized_values,
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},
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context=context)
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