Mercurial > hg > Feedworm

annotate BackendFactory.py @ 185:0b4c8dc13b7c

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author dirk
date Mon, 12 Sep 2011 11:07:58 +0200
parents 5b131f82057d
children bb3c851b18b1
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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5b131f82057d allow choosing the backend via commandline option
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1
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2 import argparse
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3
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4 SQLALCHEMY_BACKEND = "sqlalchemy"
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5 COUCHDB_BACKEND = "couchdb"
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6
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7 def _parseArguments():
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8 parser = argparse.ArgumentParser()
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9 parser.add_argument("--backend", nargs="?", choices=[SQLALCHEMY_BACKEND, COUCHDB_BACKEND],
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10 required=True, help="Specify the backend to use: either sqlalchemy or couchdb")
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11 return parser.parse_known_args()
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12
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13 def createBackend():
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14 args = _parseArguments()
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15 backend = args[0].backend
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16 if backend == SQLALCHEMY_BACKEND:
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17 from backend.sqlalchemy.SqlAlchemyBackend import SqlAlchemyBackend
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18 return SqlAlchemyBackend()
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19 elif backend == COUCHDB_BACKEND:
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20 from backend.couchdb.CouchDbBackend import CouchDbBackend
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21 return CouchDbBackend()
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22 else:
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23 raise Exception("no backend configured")