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Diffstat (limited to 'source/mongodb.py')
| -rw-r--r-- | source/mongodb.py | 253 |
1 files changed, 253 insertions, 0 deletions
diff --git a/source/mongodb.py b/source/mongodb.py new file mode 100644 index 00000000..d00b453e --- /dev/null +++ b/source/mongodb.py @@ -0,0 +1,253 @@ +#! /usr/bin/env python +# -*- coding: utf-8 -*- + +__author__ = "Cedric Bonhomme" +__version__ = "$Revision: 0.1 $" +__date__ = "$Date: 2012/03/03 $" +__revision__ = "$Date: 2012/03/03 $" +__copyright__ = "Copyright (c) Cedric Bonhomme" +__license__ = "GPLv3" + +import time +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_collection(self, feed_id): + """ + """ + return self.db[str(feed_id)].find().next() + + 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): + """ + """ + collection = self.db[str(feed_id)] + return collection.find({"article_id":article_id}).next() + + def get_all_collections(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_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 print_articles_from_collection(self, collection_id): + """ + Print the articles of a collection. + """ + collection = self.db[str(collection_id)] + cursor = collection.find({"type":1}) + print "Article for the collection", collection_id + for d in cursor: + print d + print + + def nb_articles(self, feed_id=None): + """ + Return the number of users. + """ + 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): + if feed_id is not None: + collection = self.db[feed_id] + cursor = collection.find({'type':1, 'article_like':True}) + return cursor.count() + else: + 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): + 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 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 articles of the collection + #articles.print_articles_from_collection("http://esr.ibiblio.org/?feed=rss2") + + + print "All articles:" + #print articles.get_all_articles() + + + + # Drop the database + articles.drop_database()
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