Mercurial > hg > Feedworm

comparison Mapping.py @ 34:5813e3c10f14

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move the database logic out into its own module. Make everything reload safe so that multiple sessions can be created from interactive sessions
author Dirk Olmes <dirk@xanthippe.ping.de>
date Wed, 05 May 2010 02:14:05 +0200
parents ee1432a91141
children aaec263f07ca
comparison
equal deleted inserted replaced
33:f371d02fa09d 34:5813e3c10f14
10 from sqlalchemy import Table 10 from sqlalchemy import Table
11 from sqlalchemy import Text 11 from sqlalchemy import Text
12 from sqlalchemy.orm import mapper 12 from sqlalchemy.orm import mapper
13 from sqlalchemy.orm import relation 13 from sqlalchemy.orm import relation
14 14
15 mappingDefined = False
16
15 def createMapping(engine): 17 def createMapping(engine):
18 """ Make sure the mapping is defined only once. This is not really needed for the feed updater
19 or the GUI app but comes in handy when working interactively with the system. """
20 global mappingDefined
21 if not mappingDefined:
22 _createMapping(engine)
23 mappingDefined = True
24
25 def _createMapping(engine):
16 metadata = MetaData(engine) 26 metadata = MetaData(engine)
17 27
18 feedTable = Table("feed", metadata, 28 feedTable = Table("feed", metadata,
19 Column("pk", Integer, primary_key=True), 29 Column("pk", Integer, primary_key=True),
20 Column("title", String(255), nullable=False), 30 Column("title", String(255), nullable=False),