def _get_modified_recids_invenio2(from_date):
    """Get record ids for Invenio 2."""
    from invenio.legacy.search_engine import search_pattern
    from invenio.modules.records.models import Record

    date = datetime.datetime.strptime(from_date, '%Y-%m-%d %H:%M:%S')
    return set(
        (x[0]
         for x in Record.query.filter(Record.modification_date >= date).values(
             Record.id))), search_pattern
Get record ids for Invenio 2.