"""allways executed before all others in server migration

it should only include low level schema changes

:organization: Logilab

:contact: http://www.logilab.fr/ -- mailto:contact@logilab.fr

"""

if applcubicwebversion < (2, 47, 0) and cubicwebversion >= (2, 47, 0):

    from cubicweb.server import schemaserial

    schemaserial.HAS_FULLTEXT_CONTAINER = False

    cnx.set_shared_data('do-not-insert-is_instance_of', True)

    schemaserial.HAS_FULLTEXT_CONTAINER = True

if applcubicwebversion < (2, 50, 0) and cubicwebversion >= (2, 50, 0):

    cnx.set_shared_data('do-not-insert-is_instance_of', True)

    add_relation_type('is_instance_of')

    # fill the relation using an efficient sql query instead of using rql

    sql('INSERT INTO is_instance_of_relation '

	'  SELECT * from is_relation')

    checkpoint()

    cnx.set_shared_data('do-not-insert-is_instance_of', False)

if applcubicwebversion < (2, 42, 0) and cubicwebversion >= (2, 42, 0):

    sql('ALTER TABLE entities ADD COLUMN mtime TIMESTAMP')

    sql('UPDATE entities SET mtime=CURRENT_TIMESTAMP')

    sql('CREATE INDEX entities_mtime_idx ON entities(mtime)')

    sql('''CREATE TABLE deleted_entities (

  eid INTEGER PRIMARY KEY NOT NULL,

  type VARCHAR(64) NOT NULL,

  source VARCHAR(64) NOT NULL,

  dtime TIMESTAMP NOT NULL,

  extid VARCHAR(256)

)''')

    sql('CREATE INDEX deleted_entities_type_idx ON deleted_entities(type)')

    sql('CREATE INDEX deleted_entities_dtime_idx ON deleted_entities(dtime)')

    sql('CREATE INDEX deleted_entities_extid_idx ON deleted_entities(extid)')

    checkpoint()