1 from pgtoolkit.toolbase import SimpleTool

     2 from pgtoolkit import pgbrowser

     3 

     4 

     5 class ListDependsTool(SimpleTool):

     6 

     7     """

     8     List column dependencies.

     9 

    10     """

    11 

    12     def __init__(self):

    13         SimpleTool.__init__(self, name='listdepends')

    14 

    15     def specify_args(self):

    16         SimpleTool.specify_args(self)

    17         self.parser.add_argument('table', metavar='table', type=str, help='Table name.')

    18         self.parser.add_argument('column', metavar='column', type=str, help='Column name.')

    19         self.parser.add_argument('-s', '--schema', dest='schema', metavar='schema',

    20             type=str, default='public', help='Schema name (default=public).')

    21 

    22     def main(self):

    23         browser = pgbrowser.PgBrowser(self.pgm.get_conn('target'))

    24 

    25         objects = browser.list_column_usage(self.args.table, self.args.column, schema=self.args.schema)

    26         for obj in sorted(objects, key=lambda x: (x['type'], x['schema'], x['name'])):

    27             print(obj['type'], ' ', obj['schema'], '.', obj['name'], sep='')

    28 

    29 

    30 cls = ListDependsTool

    31