def _write_csv(self, path, line_delimiter, field_delimiter, write_mode):
child = OperationInfo()
child.identifier = _Identifier.SINK_CSV
child.path = path
child.parent = self._info
child.delimiter_field = field_delimiter
child.delimiter_line = line_delimiter
child.write_mode = write_mode
self._info.sinks.append(child)
self._env._sinks.append(child)
def _write_csv(self, path, line_delimiter, field_delimiter, write_mode):
child = OperationInfo()
child.identifier = _Identifier.SINK_CSV
child.path = path
child.parent = self._info
child.delimiter_field = field_delimiter
child.delimiter_line = line_delimiter
child.write_mode = write_mode
self._info.sinks.append(child)
self._env._sinks.append(child)
def read_csv(self, path, types, line_delimiter="\n", field_delimiter=','):
"""
Create a DataSet that represents the tuples produced by reading the given CSV file.
:param path: The path of the CSV file.
:param types: Specifies the types for the CSV fields.
:return:A CsvReader that can be used to configure the CSV input.
"""
child = OperationInfo()
child_set = DataSet(self, child)
child.identifier = _Identifier.SOURCE_CSV
child.delimiter_line = line_delimiter
child.delimiter_field = field_delimiter
child.path = path
child.types = types
self._sources.append(child)
return child_set
def read_csv(self, path, types, line_delimiter="\n", field_delimiter=','):
"""
Create a DataSet that represents the tuples produced by reading the given CSV file.
:param path: The path of the CSV file.
:param types: Specifies the types for the CSV fields.
:return:A CsvReader that can be used to configure the CSV input.
"""
child = OperationInfo()
child_set = DataSet(self, child)
child.identifier = _Identifier.SOURCE_CSV
child.delimiter_line = line_delimiter
child.delimiter_field = field_delimiter
child.path = path
child.types = types
self._sources.append(child)
return child_set
def write_csv(self, path, line_delimiter="\n", field_delimiter=',', write_mode=WriteMode.NO_OVERWRITE):
"""
Writes a Tuple DataSet as a CSV file to the specified location.
Note: Only a Tuple DataSet can written as a CSV file.
:param path: The path pointing to the location the CSV file is written to.
:param write_mode: OutputFormat.WriteMode value, indicating whether files should be overwritten
"""
child = OperationInfo()
child.identifier = _Identifier.SINK_CSV
child.path = path
child.parent = self._info
child.delimiter_field = field_delimiter
child.delimiter_line = line_delimiter
child.write_mode = write_mode
self._info.sinks.append(child)
self._env._sinks.append(child)
def write_csv(self,
path,
line_delimiter="\n",
field_delimiter=',',
write_mode=WriteMode.NO_OVERWRITE):
"""
Writes a Tuple DataSet as a CSV file to the specified location.
Note: Only a Tuple DataSet can written as a CSV file.
:param path: The path pointing to the location the CSV file is written to.
:param write_mode: OutputFormat.WriteMode value, indicating whether files should be overwritten
"""
child = OperationInfo()
child.identifier = _Identifier.SINK_CSV
child.path = path
child.parent = self._info
child.delimiter_field = field_delimiter
child.delimiter_line = line_delimiter
child.write_mode = write_mode
self._info.sinks.append(child)
self._env._sinks.append(child)
