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Fix changing databases

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Conflicts:

	mongoengine/connection.py
	mongoengine/queryset.py
This commit is contained in:
Harry Marr 2010-10-05 00:46:13 +01:00
parent 3acfd90720
commit 92471445ec
2 changed files with 22 additions and 18 deletions
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22
mongoengine/connection.py
View File

@ -4,11 +4,12 @@ import multiprocessing
__all__ = ['ConnectionError', 'connect']
_connection_settings = {
_connection_defaults = {
'host': 'localhost',
'port': 27017,
}
_connection = {}
_connection_settings = _connection_defaults.copy()
_db_name = None
_db_username = None
@ -20,25 +21,25 @@ class ConnectionError(Exception):
pass
def _get_connection():
def _get_connection(reconnect=False):
global _connection
identity = get_identity()
# Connect to the database if not already connected
if _connection.get(identity) is None:
if _connection.get(identity) is None or reconnect:
try:
_connection[identity] = Connection(**_connection_settings)
except:
raise ConnectionError('Cannot connect to the database')
return _connection[identity]
def _get_db():
def _get_db(reconnect=False):
global _db, _connection
identity = get_identity()
# Connect if not already connected
if _connection.get(identity) is None:
_connection[identity] = _get_connection()
if _connection.get(identity) is None or reconnect:
_connection[identity] = _get_connection(reconnect=reconnect)
if _db.get(identity) is None:
if _db.get(identity) is None or reconnect:
# _db_name will be None if the user hasn't called connect()
if _db_name is None:
raise ConnectionError('Not connected to the database')
@ -61,9 +62,10 @@ def connect(db, username=None, password=None, **kwargs):
the default port on localhost. If authentication is needed, provide
username and password arguments as well.
"""
global _connection_settings, _db_name, _db_username, _db_password
_connection_settings.update(kwargs)
global _connection_settings, _db_name, _db_username, _db_password, _db
_connection_settings = dict(_connection_defaults, **kwargs)
_db_name = db
_db_username = username
_db_password = password
return _get_db()
return _get_db(reconnect=True)

18
mongoengine/queryset.py
View File

@ -977,7 +977,7 @@ class QuerySetManager(object):
def __init__(self, manager_func=None):
self._manager_func = manager_func
self._collection = None
self._collections = {}
def __get__(self, instance, owner):
"""Descriptor for instantiating a new QuerySet object when
@ -987,8 +987,8 @@ class QuerySetManager(object):
# Document class being used rather than a document object
return self
if self._collection is None:
db = _get_db()
db = _get_db()
if db not in self._collections:
collection = owner._meta['collection']
# Create collection as a capped collection if specified
@ -998,10 +998,10 @@ class QuerySetManager(object):
max_documents = owner._meta['max_documents']
if collection in db.collection_names():
self._collection = db[collection]
self._collections[db] = db[collection]
# The collection already exists, check if its capped
# options match the specified capped options
options = self._collection.options()
options = self._collections[db].options()
if options.get('max') != max_documents or \
options.get('size') != max_size:
msg = ('Cannot create collection "%s" as a capped '
@ -1012,13 +1012,15 @@ class QuerySetManager(object):
opts = {'capped': True, 'size': max_size}
if max_documents:
opts['max'] = max_documents
self._collection = db.create_collection(collection, **opts)
self._collections[db] = db.create_collection(
collection, **opts
)
else:
self._collection = db[collection]
self._collections[db] = db[collection]
# owner is the document that contains the QuerySetManager
queryset_class = owner._meta['queryset_class'] or QuerySet
queryset = queryset_class(owner, self._collection)
queryset = queryset_class(owner, self._collections[db])
if self._manager_func:
if self._manager_func.func_code.co_argcount == 1:
queryset = self._manager_func(queryset)