App Engine Python SDK  v1.6.9 rev.445
The Python runtime is available as an experimental Preview feature.
Public Member Functions | Static Public Attributes | List of all members
google.appengine.ext.mapreduce.input_readers.AbstractDatastoreInputReader Class Reference
Inheritance diagram for google.appengine.ext.mapreduce.input_readers.AbstractDatastoreInputReader:
google.appengine.ext.mapreduce.input_readers.InputReader google.appengine.ext.mapreduce.json_util.JsonMixin google.appengine.ext.mapreduce.input_readers.DatastoreInputReader google.appengine.ext.mapreduce.input_readers.RawDatastoreInputReader google.appengine.ext.mapreduce.input_readers.DatastoreKeyInputReader

Public Member Functions

def __init__
 
def __iter__
 
def __str__
 
def to_json
 
def from_json
 
def split_input
 
def validate
 
- Public Member Functions inherited from google.appengine.ext.mapreduce.input_readers.InputReader
def __iter__
 
def next
 
def from_json
 
def to_json
 
def split_input
 
def validate
 
- Public Member Functions inherited from google.appengine.ext.mapreduce.json_util.JsonMixin
def to_json_str
 
def from_json_str
 

Static Public Attributes

int MAX_NAMESPACES_FOR_KEY_SHARD = 10
 
string ENTITY_KIND_PARAM = "entity_kind"
 
string KEYS_ONLY_PARAM = "keys_only"
 
string BATCH_SIZE_PARAM = "batch_size"
 
string KEY_RANGE_PARAM = "key_range"
 
string FILTERS_PARAM = "filters"
 
- Static Public Attributes inherited from google.appengine.ext.mapreduce.input_readers.InputReader
 expand_parameters = False
 
string NAMESPACE_PARAM = "namespace"
 
string NAMESPACES_PARAM = "namespaces"
 

Detailed Description

Abstract class for datastore input readers.

Constructor & Destructor Documentation

def google.appengine.ext.mapreduce.input_readers.AbstractDatastoreInputReader.__init__ (   self,
  iterator 
)
Create new DatastoreInputReader object.

This is internal constructor. Use split_input to create readers instead.

Args:
  iterator: an iterator that generates objects for this input reader.

Member Function Documentation

def google.appengine.ext.mapreduce.input_readers.AbstractDatastoreInputReader.__iter__ (   self)
Yields whatever internal iterator yields.
def google.appengine.ext.mapreduce.input_readers.AbstractDatastoreInputReader.__str__ (   self)
Returns the string representation of this InputReader.
def google.appengine.ext.mapreduce.input_readers.AbstractDatastoreInputReader.from_json (   cls,
  json 
)
Create new DatastoreInputReader from json, encoded by to_json.

Args:
  json: json representation of DatastoreInputReader.

Returns:
  an instance of DatastoreInputReader with all data deserialized from json.
def google.appengine.ext.mapreduce.input_readers.AbstractDatastoreInputReader.split_input (   cls,
  mapper_spec 
)
Inherit doc.
def google.appengine.ext.mapreduce.input_readers.AbstractDatastoreInputReader.to_json (   self)
Serializes input reader to json compatible format.

Returns:
  all the data in json-compatible map.
def google.appengine.ext.mapreduce.input_readers.AbstractDatastoreInputReader.validate (   cls,
  mapper_spec 
)
Inherit docs.

The documentation for this class was generated from the following file: