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#! /usr/bin/env python
# -*- coding: utf-8 -*-
__author__ = "Cedric Bonhomme"
__version__ = "$Revision: 0.3 $"
__date__ = "$Date: 2012/03/03 $"
__revision__ = "$Date: 2012/05/01 $"
__copyright__ = "Copyright (c) Cedric Bonhomme"
__license__ = "GPLv3"
import pymongo
from operator import itemgetter, attrgetter
class Articles(object):
"""
"""
def __init__(self, url='localhost', port=27017):
"""
Instantiates the connection.
"""
self.connection = pymongo.connection.Connection(url, port)
self.db = self.connection.pyaggr3g470r
def add_collection(self, new_collection):
"""
Creates a new collection for a new feed.
"""
collection = self.db[new_collection["feed_id"]]
#collection.create_index([("feed_link", pymongo.ASCENDING)], {"unique":True, "sparse":True})
collection.insert(new_collection)
def add_articles(self, articles, feed_id):
"""
Add article(s) in a collection.
"""
collection = self.db[str(feed_id)]
collection.create_index([("article_date", pymongo.DESCENDING)], \
{"unique":False, "sparse":False})
for article in articles:
cursor = collection.find({"article_id":article["article_id"]})
if cursor.count() == 0:
collection.insert(article)
def delete_feed(self, feed_id):
"""
Delete a collection (feed with all articles).
"""
self.db.drop_collection(feed_id)
def delete_article(self, feed_id, article_id):
"""
Delete an article.
"""
collection = self.db[str(feed_id)]
collection.find_and_modify(query={"article_id":article_id}, remove=True)
def get_feed(self, feed_id):
"""
Return information about a feed.
"""
return self.db[str(feed_id)].find().next()
def get_all_feeds(self, condition=None):
"""
"""
feeds = []
collections = self.db.collection_names()
for collection_name in collections:
if collection_name != "system.indexes":
if condition is None:
cursor = self.db[collection_name].find({"type":0})
else:
cursor = self.db[collection_name].find({"type":0, condition[0]:condition[1]})
if cursor.count() != 0:
feeds.append(cursor.next())
feeds.sort(key = lambda elem: elem['feed_title'].lower())
return feeds
def get_all_articles(self):
"""
Return all articles from all collections.
"""
articles = []
collections = self.db.collection_names()
for collection_name in collections:
collection = self.db[collection_name]
articles.extend([article for article in collection.find({'type':1})])
return articles
def get_article(self, feed_id, article_id):
"""
Get an article of a specified feed.
"""
collection = self.db[str(feed_id)]
return collection.find({"article_id":article_id}).next()
def get_articles_from_collection(self, feed_id, condition=None):
"""
Return all the articles of a collection.
"""
collection = self.db[str(feed_id)]
if condition is None:
cursor = collection.find({"type":1})
else:
cursor = collection.find({"type":1, condition[0]:condition[1]})
return cursor.sort([("article_date", pymongo.DESCENDING)])
def nb_articles(self, feed_id=None):
"""
Return the number of articles of a feed
or of all the database.
"""
if feed_id is not None:
collection = self.db[feed_id]
cursor = collection.find({'type':1})
return cursor.count()
else:
nb_articles = 0
for feed_id in self.db.collection_names():
nb_articles += self.nb_articles(feed_id)
return nb_articles
def nb_favorites(self, feed_id=None):
"""
Return the number of favorites articles of a feed
or of all the database.
"""
if feed_id is not None:
# only for a feed
collection = self.db[feed_id]
cursor = collection.find({'type':1, 'article_like':True})
return cursor.count()
else:
# for all feeds
nb_favorites = 0
for feed_id in self.db.collection_names():
nb_favorites += self.nb_favorites(feed_id)
return nb_favorites
def nb_mail_notifications(self):
"""
Return the number of subscribed feeds.
"""
nb_mail_notifications = 0
for feed_id in self.db.collection_names():
collection = self.db[feed_id]
cursor = collection.find({'type':0, 'mail':True})
nb_mail_notifications += cursor.count()
return nb_mail_notifications
def nb_unread_articles(self, feed_id=None):
"""
Return the number of unread articles of a feed
or of all the database.
"""
if feed_id is not None:
collection = self.db[feed_id]
cursor = collection.find({'article_readed':False})
return cursor.count()
else:
unread_articles = 0
for feed_id in self.db.collection_names():
unread_articles += self.nb_unread_articles(feed_id)
return unread_articles
def like_article(self, like, feed_id, article_id):
"""
Like or unlike an article.
"""
collection = self.db[str(feed_id)]
collection.update({"article_id": article_id}, {"$set": {"article_like": like}})
def mark_as_read(self, readed, feed_id=None, article_id=None):
"""
"""
if feed_id != None and article_id != None:
collection = self.db[str(feed_id)]
collection.update({"article_id": article_id, "article_readed":not readed}, {"$set": {"article_readed": readed}})
elif feed_id != None and article_id == None:
collection = self.db[str(feed_id)]
collection.update({"type": 1, "article_readed":not readed}, {"$set": {"article_readed": readed}}, multi=True)
else:
for feed_id in self.db.collection_names():
self.mark_as_read(readed, feed_id, None)
def update_feed(self, feed_id, changes):
"""
Update a feed.
"""
collection = self.db[str(feed_id)]
collection.update({"type": 0, "feed_id":feed_id}, {"$set": changes}, multi=True)
def list_collections(self):
"""
List all collections (feed).
"""
collections = self.db.collection_names()
return collections
# Functions on database
def drop_database(self):
"""
Drop all the database
"""
self.connection.drop_database('pyaggr3g470r')
if __name__ == "__main__":
# Point of entry in execution mode.
articles = Articles()
# Create a collection for a stream
collection_dic = {"collection_id": 42,\
"feed_image": "Image", \
"feed_title": "Title", \
"feed_link": "Link", \
"site_title": "Site link", \
"mail": True, \
}
#articles.add_collection(collection_dic)
# Add an article in the newly created collection
article_dic1 = {"article_id": 51, \
"article_date": "Today", \
"article_link": "Link of the article", \
"article_title": "The title", \
"article_content": "The content of the article", \
"article_readed": True, \
"article_like": True \
}
article_dic2 = {"article_id": 52, \
"article_date": "Yesterday", \
"article_link": "Link", \
"article_title": "Hello", \
"article_content": "The content of the article", \
"article_readed": True, \
"article_like": True \
}
#articles.add_articles([article_dic1, article_dic2], 42)
print "All articles:"
#print articles.get_all_articles()
# Drop the database
articles.drop_database()
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