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Source code for galaxy.model.migrate.versions.0095_hda_subsets

"""
Migration script to create table for tracking history_dataset_association subsets.
"""
from __future__ import print_function

import logging

from sqlalchemy import Column, ForeignKey, Index, Integer, MetaData, Table, Unicode

log = logging.getLogger(__name__)
metadata = MetaData()

# Table to add.

HistoryDatasetAssociationSubset_table = Table("history_dataset_association_subset", metadata,
                                              Column("id", Integer, primary_key=True),
                                              Column("history_dataset_association_id", Integer, ForeignKey("history_dataset_association.id")),
                                              Column("history_dataset_association_subset_id", Integer, ForeignKey("history_dataset_association.id")),
                                              Column("location", Unicode(255), index=True))


[docs]def upgrade(migrate_engine): metadata.bind = migrate_engine print(__doc__) metadata.reflect() # Create history_dataset_association_subset. try: HistoryDatasetAssociationSubset_table.create() except Exception: log.exception("Creating history_dataset_association_subset table failed.") # Manually create indexes because they are too long for MySQL databases. i1 = Index("ix_hda_id", HistoryDatasetAssociationSubset_table.c.history_dataset_association_id) i2 = Index("ix_hda_subset_id", HistoryDatasetAssociationSubset_table.c.history_dataset_association_subset_id) try: i1.create() i2.create() except Exception: log.exception("Adding indices to table 'history_dataset_association_subset' table failed.")
[docs]def downgrade(migrate_engine): metadata.bind = migrate_engine metadata.reflect() # Drop history_dataset_association_subset table. try: HistoryDatasetAssociationSubset_table.drop() except Exception: log.exception("Dropping history_dataset_association_subset table failed.")