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"""Application base class for providing a list of data as output.
"""
import abc
import logging
from .display import DisplayCommandBase
LOG = logging.getLogger(__name__)
class Lister(DisplayCommandBase):
"""Command base class for providing a list of data as output.
"""
__metaclass__ = abc.ABCMeta
@property
def formatter_namespace(self):
return 'cliff.formatter.list'
@property
def formatter_default(self):
return 'table'
@abc.abstractmethod
def get_data(self, parsed_args):
"""Return a tuple containing the column names and an iterable
containing the data to be listed.
"""
def run(self, parsed_args):
column_names, data = self.get_data(parsed_args)
formatter = self.formatters[parsed_args.formatter]
formatter.emit_list(column_names, data, self.app.stdout, parsed_args)
return 0
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