# -*- coding: utf-8 -*-
###########################################################################
# Copyright (c), The AiiDA team. All rights reserved. #
# This file is part of the AiiDA code. #
# #
# The code is hosted on GitHub at https://github.com/aiidateam/aiida-core #
# For further information on the license, see the LICENSE.txt file #
# For further information please visit http://www.aiida.net #
###########################################################################
# pylint: disable=invalid-name,too-few-public-methods
"""Data migration for `TrajectoryData` nodes where symbol lists are moved from repository array to attribute.
This process has to be done in two separate consecutive migrations to prevent data loss in between.
"""
# Remove when https://github.com/PyCQA/pylint/issues/1931 is fixed
# pylint: disable=no-name-in-module,import-error
from django.db import migrations
from aiida.backends.djsite.db.migrations import upgrade_schema_version
from aiida.backends.general.migrations import utils
from . import ModelModifierV0025
REVISION = '1.0.27'
DOWN_REVISION = '1.0.26'
[docs]def delete_trajectory_symbols_array(apps, _):
"""Delete the symbols array from all `TrajectoryData` nodes."""
DbNode = apps.get_model('db', 'DbNode')
DbAttribute = apps.get_model('db', 'DbAttribute')
modifier = ModelModifierV0025(apps, DbAttribute)
nodes = DbNode.objects.filter(type='node.data.array.trajectory.TrajectoryData.').values_list('id', 'uuid')
for pk, uuid in nodes:
modifier.del_value_for_node(DbNode.objects.get(pk=pk), 'array|symbols')
utils.delete_numpy_array_from_repository(uuid, 'symbols')
[docs]def create_trajectory_symbols_array(apps, _):
"""Create the symbols array for all `TrajectoryData` nodes."""
import numpy
DbNode = apps.get_model('db', 'DbNode')
DbAttribute = apps.get_model('db', 'DbAttribute')
modifier = ModelModifierV0025(apps, DbAttribute)
nodes = DbNode.objects.filter(type='node.data.array.trajectory.TrajectoryData.').values_list('id', 'uuid')
for pk, uuid in nodes:
symbols = numpy.array(modifier.get_value_for_node(pk, 'symbols'))
utils.store_numpy_array_in_repository(uuid, 'symbols', symbols)
modifier.set_value_for_node(DbNode.objects.get(pk=pk), 'array|symbols', list(symbols.shape))
[docs]class Migration(migrations.Migration):
"""Deleting duplicated information stored in TrajectoryData symbols numpy arrays"""
dependencies = [
('db', '0026_trajectory_symbols_to_attribute'),
]
operations = [
migrations.RunPython(delete_trajectory_symbols_array, reverse_code=create_trajectory_symbols_array),
upgrade_schema_version(REVISION, DOWN_REVISION)
]