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Generic superclass for dealing with io based tables

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  1. """
  2.                 Name : MyIO.py 
  3.                 Author : Jason Spadaro
  4.                 Description : superclass for io-based classes and objects
  5.                 Copyright 2009
  6. """
  7.  
  8. class myIO:
  9.     """
  10.     ********************************************
  11.     *Description : returns items from an external storage source, and
  12.     *   stores them again later.
  13.     *******************************************
  14.     """
  15.  
  16.     def __init__(self, connectDict):
  17.         """
  18.         ********************************************
  19.         *Description : Initializes the connection information, rows
  20.         *   of data.  Then it makes the connection based on the myIO
  21.         *   subclass.
  22.         *******************************************
  23.         """
  24.  
  25.         self.data_rows = []             #Empty array of items...
  26.         self.item_names = connectDict["item_names"]    #List of item attribute names
  27.         self.connectDict = connectDict  #connection information (filename, db name, etc)
  28.         self.make_connect()
  29.  
  30.     def make_connect(self):
  31.         """
  32.         ********************************************
  33.         *Description : connection method
  34.         *******************************************
  35.         """
  36.  
  37.         pass
  38.  
  39.     def getItem(self, i):
  40.         """
  41.         ********************************************
  42.         *Description : get's one item's worth of data.
  43.         *******************************************
  44.         """
  45.         temp_dict = {}
  46.         for attribute, name in self.datarows[i], item_names:
  47.             temp_dict.update({name:attribute})
  48.         return temp_dict
  49.  
  50.     def writeItem(self):
  51.         """
  52.         ********************************************
  53.         *Description : Writes one item worth of data
  54.         *******************************************
  55.         """
  56.  
  57.         pass
  58.  
  59.     def close(self):
  60.         """
  61.         ********************************************
  62.         *Description : Cleans up io when it closes.
  63.         *******************************************
  64.         """
  65.  
  66.         pass
  67.  
  68.     def dump_current_dict(self, item_dict):
  69.         """
  70.         ********************************************
  71.         *Description : Generically writes all items to io
  72.         ********************************************
  73.         """
  74.  
  75.         for item_name, item in item_dict.iteritems():
  76.             print item_name + " is being written."
  77.             self.write_item(item)
  78.  
  79.     def get_item_dict(self):
  80.         """
  81.         ********************************************
  82.         *Description : Getter for the aggregator
  83.         ********************************************
  84.         """
  85.  
  86.         tempItemDict = itemDict()
  87.         for i in range(self.data_rows):
  88.             tempItem = getItem(i)
  89.             tempItemDict.add(tempItem)
  90.         return tempItemDict

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