Mercurial > hg > Feedworm

annotate backend/AbstractBackend.py @ 192:9d422fa90096

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optimize marking feed entries as read: do not round trip to the database if the entry was already marked as read
author dirk
date Wed, 21 Sep 2011 13:23:25 +0200
parents 3bcf39181f6e
children f74fe7cb5091
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3bcf39181f6e pull the calculation of the epxire date up into AbstractBackend
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3bcf39181f6e pull the calculation of the epxire date up into AbstractBackend
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2 from datetime import datetime, timedelta
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a05719a6175e move common functionality into an abstract backend class, have both backends inherit from it. Implement enough of the couchdb backend that reading feeds (and marking feed entries as read) is possible
Dirk Olmes <dirk@xanthippe.ping.de>
parents:
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a05719a6175e move common functionality into an abstract backend class, have both backends inherit from it. Implement enough of the couchdb backend that reading feeds (and marking feed entries as read) is possible
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4 class AbstractBackend(object):
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5 def __init__(self):
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6 self.feeds = []
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7 self.selectedFeed = None
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8 self.feedEntries = None
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9 self.selectedFeedEntry = None
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a05719a6175e move common functionality into an abstract backend class, have both backends inherit from it. Implement enough of the couchdb backend that reading feeds (and marking feed entries as read) is possible
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11 def dispose(self):
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12 pass
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14 #
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15 # handling of feeds
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16 #
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18 def selectFeed(self, index):
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19 self.selectedFeed = self.feeds[index]
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20 self.feedEntries = None
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21 return self.selectedFeed
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23 def entriesForSelectedFeed(self):
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24 if self.feedEntries is None:
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25 hideReadEntries = self.preferences().hideReadFeedEntries()
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26 self.feedEntries = self._retrieveEntriesForSelectedFeed(hideReadEntries)
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27 return self.feedEntries
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29 def _calculateExpireDate(self):
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30 now = datetime.now()
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31 daysToKeepFeedEntries = self.preferences().daysToKeepFeedEntries()
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32 delta = timedelta(days=daysToKeepFeedEntries)
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33 return now - delta
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35 #
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36 # handling of the selected feed entry
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37 #
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parents:
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a05719a6175e move common functionality into an abstract backend class, have both backends inherit from it. Implement enough of the couchdb backend that reading feeds (and marking feed entries as read) is possible
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39 def selectFeedEntry(self, index):
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40 self.selectedFeedEntry = self.feedEntries[index]
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41 self._markSelectedFeedEntryRead()
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42 return self.selectedFeedEntry