json_to_relation.edxTrackLogJSONParser.EdXTrackLogJSONParser

Class EdXTrackLogJSONParser

object --+ | generic_json_parser.GenericJSONParser --+ | EdXTrackLogJSONParser

Parser specialized for EdX track logs.

Instance Methods

[hide private]

__init__(self, jsonToRelationConverter)
Constructor

source code

[<any>]

processOneJSONObject(self, jsonStr, row)
Given one line from the EdX Track log, produce one row of relational output.

source code

Inherited from object: __delattr__, __format__, __getattribute__, __hash__, __new__, __reduce__, __reduce_ex__, __repr__, __setattr__, __sizeof__, __str__, __subclasshook__

Inherited from generic_json_parser.GenericJSONParser

decArrayIndex(self, arrayIndexStack)

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incArrayIndex(self, arrayIndexStack)

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removeItemPartOfString(self, label)
Given a label, like employee.item.name, remove the last occurrence of 'item'

source code

setValInRow(self, theRow, colName, value)
Given a column name, a value and a partially filled row, add the column to the row, or set the value in an already existing row.

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Properties

[hide private]

Inherited from object: __class__

init(self, jsonToRelationConverter)
(Constructor)

source code

Constructor

Parameters:

jsonToRelationConverter (JSONToRelation) - JSONToRelation instance

Overrides: object.__init__

processOneJSONObject(self, jsonStr, row)

source code

Given one line from the EdX Track log, produce one row of relational output. Return is an array of values, the same that is passed in. On the way, the partne JSONToRelation object is called to ensure that JSON fields for which new columns have not been created yet receive a place in the row array. Different types of JSON records will be passed: server heartbeats, dashboard accesses, account creations, user logins. Example record for the latter:

"username": "", 
"host": "class.stanford.edu", 
"event_source": "server", 
"event_type": "/accounts/login", 
"time": "2013-06-14T00:31:57.661338", 
"ip": "98.230.189.66", 
"event": "{
           "POST": {}, 
           "GET": {
                "next": ["/courses/Medicine/HRP258/Statistics_in_Medicine/courseware/80160e.../"]}}", 
"agent": "Mozilla/5.0 (Windows NT 5.1; rv:21.0) Gecko/20100101
Firefox/21.0", 
"page": null}

Parameters:

jsonStr (String) - string of a single, self contained JSON object
row (List<<any>>) - partially filled array of values. Passed by reference

Returns: [<any>]

the filled-in row

Overrides: generic_json_parser.GenericJSONParser.processOneJSONObject

Class EdXTrackLogJSONParser

__init__(self, jsonToRelationConverter) (Constructor)

processOneJSONObject(self, jsonStr, row)

init(self, jsonToRelationConverter)
(Constructor)