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'''
Created on Dec 31, 2012
@author: steger
'''
from DataProcessing.DataReader import DataReader
class DataIndex(DataReader):
'''
classdocs
'''
def __init__(self, datasource, key):
'''
Constructor
'''
DataReader.__init__(self, datasource)
self.indexmap = {}
self.extract(cellrequest = key)
def buildindex(self):
i = len(self.indexmap)
for k in self:
self.indexmap[tuple(k)] = i
i += 1
def __getitem__(self, k):
if self.sourceCleared.isSet():
self.sourceCleared.clear()
self.indexmap.clear()
self.buildindex()
try:
iter(k)
except TypeError:
k = (k,)
if not self.indexmap.has_key(k) and self.sourceExpanded.isSet():
self.sourceExpanded.clear()
self.buildindex()
return self.source._rawrecords[ self.indexmap[k] ]
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