Mercurial > hg > Feedworm

annotate Mapping.py @ 12:9ede118b93ef

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
move session creation into its own module
author Dirk Olmes <dirk@xanthippe.ping.de>
date Wed, 28 Apr 2010 02:09:48 +0200
parents 215c34f61e95
children 74481aa49974
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
2
8a624ee48a74 First skeleton for sqlalchemy: define the mapping and create the first feed
Dirk Olmes <dirk@xanthippe.ping.de>
parents:
diff changeset
1
8a624ee48a74 First skeleton for sqlalchemy: define the mapping and create the first feed
Dirk Olmes <dirk@xanthippe.ping.de>
parents:
diff changeset
2 from Feed import Feed
4
e0199f383442 retrieve a feed for the given URL, store entries as feed_entry rows into the database
Dirk Olmes <dirk@xanthippe.ping.de>
parents: 2
diff changeset
3 from FeedEntry import FeedEntry
2
8a624ee48a74 First skeleton for sqlalchemy: define the mapping and create the first feed
Dirk Olmes <dirk@xanthippe.ping.de>
parents:
diff changeset
4 from sqlalchemy import Column
5
bfd47f55d85b add the updated date of the feed
Dirk Olmes <dirk@xanthippe.ping.de>
parents: 4
diff changeset
5 from sqlalchemy import DateTime
4
e0199f383442 retrieve a feed for the given URL, store entries as feed_entry rows into the database
Dirk Olmes <dirk@xanthippe.ping.de>
parents: 2
diff changeset
6 from sqlalchemy import ForeignKey
2
8a624ee48a74 First skeleton for sqlalchemy: define the mapping and create the first feed
Dirk Olmes <dirk@xanthippe.ping.de>
parents:
diff changeset
7 from sqlalchemy import Integer
8a624ee48a74 First skeleton for sqlalchemy: define the mapping and create the first feed
Dirk Olmes <dirk@xanthippe.ping.de>
parents:
diff changeset
8 from sqlalchemy import MetaData
8a624ee48a74 First skeleton for sqlalchemy: define the mapping and create the first feed
Dirk Olmes <dirk@xanthippe.ping.de>
parents:
diff changeset
9 from sqlalchemy import String
8a624ee48a74 First skeleton for sqlalchemy: define the mapping and create the first feed
Dirk Olmes <dirk@xanthippe.ping.de>
parents:
diff changeset
10 from sqlalchemy import Table
8a624ee48a74 First skeleton for sqlalchemy: define the mapping and create the first feed
Dirk Olmes <dirk@xanthippe.ping.de>
parents:
diff changeset
11 from sqlalchemy.orm import mapper
4
e0199f383442 retrieve a feed for the given URL, store entries as feed_entry rows into the database
Dirk Olmes <dirk@xanthippe.ping.de>
parents: 2
diff changeset
12 from sqlalchemy.orm import relation
2
8a624ee48a74 First skeleton for sqlalchemy: define the mapping and create the first feed
Dirk Olmes <dirk@xanthippe.ping.de>
parents:
diff changeset
13
8a624ee48a74 First skeleton for sqlalchemy: define the mapping and create the first feed
Dirk Olmes <dirk@xanthippe.ping.de>
parents:
diff changeset
14 def createMapping(engine):
8a624ee48a74 First skeleton for sqlalchemy: define the mapping and create the first feed
Dirk Olmes <dirk@xanthippe.ping.de>
parents:
diff changeset
15 metadata = MetaData(engine)
8a624ee48a74 First skeleton for sqlalchemy: define the mapping and create the first feed
Dirk Olmes <dirk@xanthippe.ping.de>
parents:
diff changeset
16
8a624ee48a74 First skeleton for sqlalchemy: define the mapping and create the first feed
Dirk Olmes <dirk@xanthippe.ping.de>
parents:
diff changeset
17 feedTable = Table("feed", metadata,
8a624ee48a74 First skeleton for sqlalchemy: define the mapping and create the first feed
Dirk Olmes <dirk@xanthippe.ping.de>
parents:
diff changeset
18 Column("pk", Integer, primary_key=True),
7
215c34f61e95 Feed.url -> Feed.rss_url
Dirk Olmes <dirk@xanthippe.ping.de>
parents: 6
diff changeset
19 Column("title", String(255), nullable=False),
215c34f61e95 Feed.url -> Feed.rss_url
Dirk Olmes <dirk@xanthippe.ping.de>
parents: 6
diff changeset
20 Column("rss_url", String(255), nullable=False)
2
8a624ee48a74 First skeleton for sqlalchemy: define the mapping and create the first feed
Dirk Olmes <dirk@xanthippe.ping.de>
parents:
diff changeset
21 )
4
e0199f383442 retrieve a feed for the given URL, store entries as feed_entry rows into the database
Dirk Olmes <dirk@xanthippe.ping.de>
parents: 2
diff changeset
22
e0199f383442 retrieve a feed for the given URL, store entries as feed_entry rows into the database
Dirk Olmes <dirk@xanthippe.ping.de>
parents: 2
diff changeset
23 feedEntryTable = Table("feed_entry", metadata,
e0199f383442 retrieve a feed for the given URL, store entries as feed_entry rows into the database
Dirk Olmes <dirk@xanthippe.ping.de>
parents: 2
diff changeset
24 Column("pk", Integer, primary_key=True),
6
87317ba41816 add a creation date for the feed entry
Dirk Olmes <dirk@xanthippe.ping.de>
parents: 5
diff changeset
25 Column("create_timestamp", DateTime, nullable=False),
87317ba41816 add a creation date for the feed entry
Dirk Olmes <dirk@xanthippe.ping.de>
parents: 5
diff changeset
26
4
e0199f383442 retrieve a feed for the given URL, store entries as feed_entry rows into the database
Dirk Olmes <dirk@xanthippe.ping.de>
parents: 2
diff changeset
27 Column("id", String(255), nullable=False),
5
bfd47f55d85b add the updated date of the feed
Dirk Olmes <dirk@xanthippe.ping.de>
parents: 4
diff changeset
28 Column("link", String(255), nullable=False),
4
e0199f383442 retrieve a feed for the given URL, store entries as feed_entry rows into the database
Dirk Olmes <dirk@xanthippe.ping.de>
parents: 2
diff changeset
29 Column("title", String, nullable=False),
e0199f383442 retrieve a feed for the given URL, store entries as feed_entry rows into the database
Dirk Olmes <dirk@xanthippe.ping.de>
parents: 2
diff changeset
30 Column("summary", String, nullable=False),
5
bfd47f55d85b add the updated date of the feed
Dirk Olmes <dirk@xanthippe.ping.de>
parents: 4
diff changeset
31 Column("updated", DateTime),
4
e0199f383442 retrieve a feed for the given URL, store entries as feed_entry rows into the database
Dirk Olmes <dirk@xanthippe.ping.de>
parents: 2
diff changeset
32 Column("feed_id", Integer, ForeignKey("feed.pk"))
e0199f383442 retrieve a feed for the given URL, store entries as feed_entry rows into the database
Dirk Olmes <dirk@xanthippe.ping.de>
parents: 2
diff changeset
33 )
2
8a624ee48a74 First skeleton for sqlalchemy: define the mapping and create the first feed
Dirk Olmes <dirk@xanthippe.ping.de>
parents:
diff changeset
34
8a624ee48a74 First skeleton for sqlalchemy: define the mapping and create the first feed
Dirk Olmes <dirk@xanthippe.ping.de>
parents:
diff changeset
35 metadata.create_all()
8a624ee48a74 First skeleton for sqlalchemy: define the mapping and create the first feed
Dirk Olmes <dirk@xanthippe.ping.de>
parents:
diff changeset
36
4
e0199f383442 retrieve a feed for the given URL, store entries as feed_entry rows into the database
Dirk Olmes <dirk@xanthippe.ping.de>
parents: 2
diff changeset
37 mapper(FeedEntry, feedEntryTable)
e0199f383442 retrieve a feed for the given URL, store entries as feed_entry rows into the database
Dirk Olmes <dirk@xanthippe.ping.de>
parents: 2
diff changeset
38 mapper(Feed, feedTable,
e0199f383442 retrieve a feed for the given URL, store entries as feed_entry rows into the database
Dirk Olmes <dirk@xanthippe.ping.de>
parents: 2
diff changeset
39 properties = {
e0199f383442 retrieve a feed for the given URL, store entries as feed_entry rows into the database
Dirk Olmes <dirk@xanthippe.ping.de>
parents: 2
diff changeset
40 "entries" : relation(FeedEntry, backref = "feed")
e0199f383442 retrieve a feed for the given URL, store entries as feed_entry rows into the database
Dirk Olmes <dirk@xanthippe.ping.de>
parents: 2
diff changeset
41 }
e0199f383442 retrieve a feed for the given URL, store entries as feed_entry rows into the database
Dirk Olmes <dirk@xanthippe.ping.de>
parents: 2
diff changeset
42 )