Mercurial > hg > Feedworm

annotate backend/couchdb/CouchDbBackend.py @ 158:e8bb107a74e1

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
all preferences are stored in a single JSON document in the couchdb backend. PreferencesDialog converts QString to a proper Python datatybe before sending it to the backend.
author dirk
date Mon, 29 Aug 2011 02:33:51 +0200
parents a05719a6175e
children 2940e74c9663
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
132
63d6d60d37ff new backend for using CouchDB as persistence mechanism ... currently all methods are unimplemented
Dirk Olmes <dirk@xanthippe.ping.de>
parents:
diff changeset
1
144
74217db92993 updating feeds on the couchdb backend works now
Dirk Olmes <dirk@xanthippe.ping.de>
parents: 139
diff changeset
2 from FeedUpdater import FeedUpdater
133
9e1e6b96d8b0 implement proxyHost/proxyPort in Preferences
Dirk Olmes <dirk@xanthippe.ping.de>
parents: 132
diff changeset
3 from Preferences import Preferences
155
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: 148
diff changeset
4 from backend.AbstractBackend import AbstractBackend
139
2cd30af937fa add the required methods for determining if a feed needs to be updated
Dirk Olmes <dirk@xanthippe.ping.de>
parents: 133
diff changeset
5 from backend.couchdb.Feed import Feed
146
8ec20377bcb0 move getting the entries for a feed to the backend so that the couchdb backend can use a custom view for feed entries
Dirk Olmes <dirk@xanthippe.ping.de>
parents: 144
diff changeset
6 from backend.couchdb.FeedEntry import FeedEntry
132
63d6d60d37ff new backend for using CouchDB as persistence mechanism ... currently all methods are unimplemented
Dirk Olmes <dirk@xanthippe.ping.de>
parents:
diff changeset
7 import couchdb
63d6d60d37ff new backend for using CouchDB as persistence mechanism ... currently all methods are unimplemented
Dirk Olmes <dirk@xanthippe.ping.de>
parents:
diff changeset
8
133
9e1e6b96d8b0 implement proxyHost/proxyPort in Preferences
Dirk Olmes <dirk@xanthippe.ping.de>
parents: 132
diff changeset
9 DATABASE = "feedtest"
9e1e6b96d8b0 implement proxyHost/proxyPort in Preferences
Dirk Olmes <dirk@xanthippe.ping.de>
parents: 132
diff changeset
10
155
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: 148
diff changeset
11 class CouchDbBackend(AbstractBackend):
132
63d6d60d37ff new backend for using CouchDB as persistence mechanism ... currently all methods are unimplemented
Dirk Olmes <dirk@xanthippe.ping.de>
parents:
diff changeset
12 '''
63d6d60d37ff new backend for using CouchDB as persistence mechanism ... currently all methods are unimplemented
Dirk Olmes <dirk@xanthippe.ping.de>
parents:
diff changeset
13 Backend that uses CouchDB for persistence
63d6d60d37ff new backend for using CouchDB as persistence mechanism ... currently all methods are unimplemented
Dirk Olmes <dirk@xanthippe.ping.de>
parents:
diff changeset
14 '''
63d6d60d37ff new backend for using CouchDB as persistence mechanism ... currently all methods are unimplemented
Dirk Olmes <dirk@xanthippe.ping.de>
parents:
diff changeset
15
63d6d60d37ff new backend for using CouchDB as persistence mechanism ... currently all methods are unimplemented
Dirk Olmes <dirk@xanthippe.ping.de>
parents:
diff changeset
16 def __init__(self):
63d6d60d37ff new backend for using CouchDB as persistence mechanism ... currently all methods are unimplemented
Dirk Olmes <dirk@xanthippe.ping.de>
parents:
diff changeset
17 server = couchdb.Server()
133
9e1e6b96d8b0 implement proxyHost/proxyPort in Preferences
Dirk Olmes <dirk@xanthippe.ping.de>
parents: 132
diff changeset
18 self.database = server[DATABASE]
158
e8bb107a74e1 all preferences are stored in a single JSON document in the couchdb backend. PreferencesDialog converts QString to a proper Python datatybe before sending it to the backend.
dirk
parents: 155
diff changeset
19 self.prefs = None
132
63d6d60d37ff new backend for using CouchDB as persistence mechanism ... currently all methods are unimplemented
Dirk Olmes <dirk@xanthippe.ping.de>
parents:
diff changeset
20
63d6d60d37ff new backend for using CouchDB as persistence mechanism ... currently all methods are unimplemented
Dirk Olmes <dirk@xanthippe.ping.de>
parents:
diff changeset
21 def preferences(self):
158
e8bb107a74e1 all preferences are stored in a single JSON document in the couchdb backend. PreferencesDialog converts QString to a proper Python datatybe before sending it to the backend.
dirk
parents: 155
diff changeset
22 if self.prefs is None:
e8bb107a74e1 all preferences are stored in a single JSON document in the couchdb backend. PreferencesDialog converts QString to a proper Python datatybe before sending it to the backend.
dirk
parents: 155
diff changeset
23 self.prefs = Preferences(self.database)
e8bb107a74e1 all preferences are stored in a single JSON document in the couchdb backend. PreferencesDialog converts QString to a proper Python datatybe before sending it to the backend.
dirk
parents: 155
diff changeset
24 return self.prefs
132
63d6d60d37ff new backend for using CouchDB as persistence mechanism ... currently all methods are unimplemented
Dirk Olmes <dirk@xanthippe.ping.de>
parents:
diff changeset
25
155
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: 148
diff changeset
26 #
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: 148
diff changeset
27 # handling of feeds
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: 148
diff changeset
28 #
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: 148
diff changeset
29
132
63d6d60d37ff new backend for using CouchDB as persistence mechanism ... currently all methods are unimplemented
Dirk Olmes <dirk@xanthippe.ping.de>
parents:
diff changeset
30 def getFeeds(self):
146
8ec20377bcb0 move getting the entries for a feed to the backend so that the couchdb backend can use a custom view for feed entries
Dirk Olmes <dirk@xanthippe.ping.de>
parents: 144
diff changeset
31 if self.preferences().showOnlyUnreadFeeds():
155
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: 148
diff changeset
32 self.feeds = self._getUnreadFeeds()
146
8ec20377bcb0 move getting the entries for a feed to the backend so that the couchdb backend can use a custom view for feed entries
Dirk Olmes <dirk@xanthippe.ping.de>
parents: 144
diff changeset
33 else:
148
c5a427d46703 displaying entries for a feed works now with the couchdb backend
Dirk Olmes <dirk@xanthippe.ping.de>
parents: 146
diff changeset
34 # make sure that the results are actually fetched into memory, otherwise we'll pass
c5a427d46703 displaying entries for a feed works now with the couchdb backend
Dirk Olmes <dirk@xanthippe.ping.de>
parents: 146
diff changeset
35 # a ViewResults instance around which is not what we want
155
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: 148
diff changeset
36 self.feeds = list(Feed.all(self.database))
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: 148
diff changeset
37 return self.feeds
146
8ec20377bcb0 move getting the entries for a feed to the backend so that the couchdb backend can use a custom view for feed entries
Dirk Olmes <dirk@xanthippe.ping.de>
parents: 144
diff changeset
38
8ec20377bcb0 move getting the entries for a feed to the backend so that the couchdb backend can use a custom view for feed entries
Dirk Olmes <dirk@xanthippe.ping.de>
parents: 144
diff changeset
39 def _getUnreadFeeds(self):
132
63d6d60d37ff new backend for using CouchDB as persistence mechanism ... currently all methods are unimplemented
Dirk Olmes <dirk@xanthippe.ping.de>
parents:
diff changeset
40 raise Exception("not yet implemented")
63d6d60d37ff new backend for using CouchDB as persistence mechanism ... currently all methods are unimplemented
Dirk Olmes <dirk@xanthippe.ping.de>
parents:
diff changeset
41
155
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: 148
diff changeset
42 def _retrieveEntriesForSelectedFeed(self, hideReadEntries):
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: 148
diff changeset
43 # TODO how to hide read entries if requested?
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: 148
diff changeset
44 viewResults = FeedEntry.view(self.database, "feedtest/feedEntries_by_feed",
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: 148
diff changeset
45 key=self.selectedFeed.id)
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: 148
diff changeset
46 return list(viewResults)
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: 148
diff changeset
47
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: 148
diff changeset
48 def markSelectedFeedAsRead(self):
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: 148
diff changeset
49 for feedEntry in self.entriesForSelectedFeed():
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: 148
diff changeset
50 feedEntry.markRead(self.database)
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: 148
diff changeset
51
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: 148
diff changeset
52 #
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: 148
diff changeset
53 # handling of the selected feed entry
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: 148
diff changeset
54 #
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: 148
diff changeset
55
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: 148
diff changeset
56 def _markSelectedFeedEntryRead(self):
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: 148
diff changeset
57 self.selectedFeedEntry.markRead(self.database)
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: 148
diff changeset
58
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: 148
diff changeset
59 def toggleSelectedFeedEntryRead(self):
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: 148
diff changeset
60 self.selectedFeedEntry.toggleRead(self.database)
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: 148
diff changeset
61
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: 148
diff changeset
62
132
63d6d60d37ff new backend for using CouchDB as persistence mechanism ... currently all methods are unimplemented
Dirk Olmes <dirk@xanthippe.ping.de>
parents:
diff changeset
63 def toggleRead(self, feedEntry):
63d6d60d37ff new backend for using CouchDB as persistence mechanism ... currently all methods are unimplemented
Dirk Olmes <dirk@xanthippe.ping.de>
parents:
diff changeset
64 raise Exception("not yet implemented")
63d6d60d37ff new backend for using CouchDB as persistence mechanism ... currently all methods are unimplemented
Dirk Olmes <dirk@xanthippe.ping.de>
parents:
diff changeset
65
63d6d60d37ff new backend for using CouchDB as persistence mechanism ... currently all methods are unimplemented
Dirk Olmes <dirk@xanthippe.ping.de>
parents:
diff changeset
66 def markAllEntriesRead(self, feed):
63d6d60d37ff new backend for using CouchDB as persistence mechanism ... currently all methods are unimplemented
Dirk Olmes <dirk@xanthippe.ping.de>
parents:
diff changeset
67 raise Exception("not yet implemented")
63d6d60d37ff new backend for using CouchDB as persistence mechanism ... currently all methods are unimplemented
Dirk Olmes <dirk@xanthippe.ping.de>
parents:
diff changeset
68
63d6d60d37ff new backend for using CouchDB as persistence mechanism ... currently all methods are unimplemented
Dirk Olmes <dirk@xanthippe.ping.de>
parents:
diff changeset
69 def createFeed(self, url):
63d6d60d37ff new backend for using CouchDB as persistence mechanism ... currently all methods are unimplemented
Dirk Olmes <dirk@xanthippe.ping.de>
parents:
diff changeset
70 raise Exception("not yet implemented")
63d6d60d37ff new backend for using CouchDB as persistence mechanism ... currently all methods are unimplemented
Dirk Olmes <dirk@xanthippe.ping.de>
parents:
diff changeset
71
63d6d60d37ff new backend for using CouchDB as persistence mechanism ... currently all methods are unimplemented
Dirk Olmes <dirk@xanthippe.ping.de>
parents:
diff changeset
72 def updateFeed(self, feed, changes):
63d6d60d37ff new backend for using CouchDB as persistence mechanism ... currently all methods are unimplemented
Dirk Olmes <dirk@xanthippe.ping.de>
parents:
diff changeset
73 raise Exception("not yet implemented")
63d6d60d37ff new backend for using CouchDB as persistence mechanism ... currently all methods are unimplemented
Dirk Olmes <dirk@xanthippe.ping.de>
parents:
diff changeset
74
63d6d60d37ff new backend for using CouchDB as persistence mechanism ... currently all methods are unimplemented
Dirk Olmes <dirk@xanthippe.ping.de>
parents:
diff changeset
75 def deleteFeed(self, feed):
63d6d60d37ff new backend for using CouchDB as persistence mechanism ... currently all methods are unimplemented
Dirk Olmes <dirk@xanthippe.ping.de>
parents:
diff changeset
76 raise Exception("not yet implemented")
63d6d60d37ff new backend for using CouchDB as persistence mechanism ... currently all methods are unimplemented
Dirk Olmes <dirk@xanthippe.ping.de>
parents:
diff changeset
77
146
8ec20377bcb0 move getting the entries for a feed to the backend so that the couchdb backend can use a custom view for feed entries
Dirk Olmes <dirk@xanthippe.ping.de>
parents: 144
diff changeset
78 def entriesForFeed(self, feed, hideReadEntries):
8ec20377bcb0 move getting the entries for a feed to the backend so that the couchdb backend can use a custom view for feed entries
Dirk Olmes <dirk@xanthippe.ping.de>
parents: 144
diff changeset
79 viewName = "feedtest/feedEntries_by_feed"
8ec20377bcb0 move getting the entries for a feed to the backend so that the couchdb backend can use a custom view for feed entries
Dirk Olmes <dirk@xanthippe.ping.de>
parents: 144
diff changeset
80 if hideReadEntries:
8ec20377bcb0 move getting the entries for a feed to the backend so that the couchdb backend can use a custom view for feed entries
Dirk Olmes <dirk@xanthippe.ping.de>
parents: 144
diff changeset
81 viewName = "feedtest/unread_feedEntries_by_feed"
148
c5a427d46703 displaying entries for a feed works now with the couchdb backend
Dirk Olmes <dirk@xanthippe.ping.de>
parents: 146
diff changeset
82 return list(FeedEntry.view(self.database, viewName))
146
8ec20377bcb0 move getting the entries for a feed to the backend so that the couchdb backend can use a custom view for feed entries
Dirk Olmes <dirk@xanthippe.ping.de>
parents: 144
diff changeset
83
155
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: 148
diff changeset
84 def markFeedEntriesAsRead(self, indices):
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: 148
diff changeset
85 for index in indices:
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: 148
diff changeset
86 feedEntry = self.entriesForSelectedFeed()[index]
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: 148
diff changeset
87 feedEntry.markRead(self.database)
132
63d6d60d37ff new backend for using CouchDB as persistence mechanism ... currently all methods are unimplemented
Dirk Olmes <dirk@xanthippe.ping.de>
parents:
diff changeset
88
63d6d60d37ff new backend for using CouchDB as persistence mechanism ... currently all methods are unimplemented
Dirk Olmes <dirk@xanthippe.ping.de>
parents:
diff changeset
89 def updateAllFeeds(self):
139
2cd30af937fa add the required methods for determining if a feed needs to be updated
Dirk Olmes <dirk@xanthippe.ping.de>
parents: 133
diff changeset
90 # TODO use a view instead of iterating all feeds
2cd30af937fa add the required methods for determining if a feed needs to be updated
Dirk Olmes <dirk@xanthippe.ping.de>
parents: 133
diff changeset
91 allFeeds = Feed.all(self.database)
2cd30af937fa add the required methods for determining if a feed needs to be updated
Dirk Olmes <dirk@xanthippe.ping.de>
parents: 133
diff changeset
92 for feed in allFeeds:
2cd30af937fa add the required methods for determining if a feed needs to be updated
Dirk Olmes <dirk@xanthippe.ping.de>
parents: 133
diff changeset
93 if feed.needsUpdate():
144
74217db92993 updating feeds on the couchdb backend works now
Dirk Olmes <dirk@xanthippe.ping.de>
parents: 139
diff changeset
94 FeedUpdater(feed, self.database).update()
132
63d6d60d37ff new backend for using CouchDB as persistence mechanism ... currently all methods are unimplemented
Dirk Olmes <dirk@xanthippe.ping.de>
parents:
diff changeset
95
63d6d60d37ff new backend for using CouchDB as persistence mechanism ... currently all methods are unimplemented
Dirk Olmes <dirk@xanthippe.ping.de>
parents:
diff changeset
96 def expireFeedEntries(self):
139
2cd30af937fa add the required methods for determining if a feed needs to be updated
Dirk Olmes <dirk@xanthippe.ping.de>
parents: 133
diff changeset
97 print("Expiring feeds is not yet implemented")
2cd30af937fa add the required methods for determining if a feed needs to be updated
Dirk Olmes <dirk@xanthippe.ping.de>
parents: 133
diff changeset
98 # raise Exception("not yet implemented")
132
63d6d60d37ff new backend for using CouchDB as persistence mechanism ... currently all methods are unimplemented
Dirk Olmes <dirk@xanthippe.ping.de>
parents:
diff changeset
99