Python connection_created.send方法代码示例

# 需要导入模块: from django.db.backends.signals import connection_created [as 别名]
# 或者: from django.db.backends.signals.connection_created import send [as 别名]
def connect(self):
        """Connects to the database. Assumes that the connection is closed."""
        # In case the previous connection was closed while in an atomic block
        self.in_atomic_block = False
        self.savepoint_ids = []
        self.needs_rollback = False
        # Reset parameters defining when to close the connection
        max_age = self.settings_dict['CONN_MAX_AGE']
        self.close_at = None if max_age is None else time.time() + max_age
        self.closed_in_transaction = False
        self.errors_occurred = False
        # Establish the connection
        conn_params = self.get_connection_params()
        self.connection = self.get_new_connection(conn_params)
        self.set_autocommit(self.settings_dict['AUTOCOMMIT'])
        self.init_connection_state()
        connection_created.send(sender=self.__class__, connection=self) 

# 需要导入模块: from django.db.backends.signals import connection_created [as 别名]
# 或者: from django.db.backends.signals.connection_created import send [as 别名]
def connect(self):
        """Connect to the database. Assume that the connection is closed."""
        # Check for invalid configurations.
        self.check_settings()
        # In case the previous connection was closed while in an atomic block
        self.in_atomic_block = False
        self.savepoint_ids = []
        self.needs_rollback = False
        # Reset parameters defining when to close the connection
        max_age = self.settings_dict['CONN_MAX_AGE']
        self.close_at = None if max_age is None else time.time() + max_age
        self.closed_in_transaction = False
        self.errors_occurred = False
        # Establish the connection
        conn_params = self.get_connection_params()
        self.connection = self.get_new_connection(conn_params)
        self.set_autocommit(self.settings_dict['AUTOCOMMIT'])
        self.init_connection_state()
        connection_created.send(sender=self.__class__, connection=self)

        self.run_on_commit = [] 

# 需要导入模块: from django.db.backends.signals import connection_created [as 别名]
# 或者: from django.db.backends.signals.connection_created import send [as 别名]
def connect(self):
        """Connects to the database. Assumes that the connection is closed."""
        # Check for invalid configurations.
        self.check_settings()
        # In case the previous connection was closed while in an atomic block
        self.in_atomic_block = False
        self.savepoint_ids = []
        self.needs_rollback = False
        # Reset parameters defining when to close the connection
        max_age = self.settings_dict['CONN_MAX_AGE']
        self.close_at = None if max_age is None else time.time() + max_age
        self.closed_in_transaction = False
        self.errors_occurred = False
        # Establish the connection
        conn_params = self.get_connection_params()
        self.connection = self.get_new_connection(conn_params)
        self.set_autocommit(self.settings_dict['AUTOCOMMIT'])
        self.init_connection_state()
        connection_created.send(sender=self.__class__, connection=self)

        self.run_on_commit = [] 

# 需要导入模块: from django.db.backends.signals import connection_created [as 别名]
# 或者: from django.db.backends.signals.connection_created import send [as 别名]
def _connect(self):
        """Setup the connection with MySQL"""
        self.connection = self.get_new_connection(self.get_connection_params())
        connection_created.send(sender=self.__class__, connection=self)
        self.init_connection_state() 

# 需要导入模块: from django.db.backends.signals import connection_created [as 别名]
# 或者: from django.db.backends.signals.connection_created import send [as 别名]
def connect(self):
        with self._connect_lock:
            if not self.connected or self.connection is None:
                settings = self.settings_dict
                self.connection = CassandraConnection(self.alias, **settings)
                connection_created.send(sender=self.__class__, connection=self)
                self.connected = True 

# 需要导入模块: from django.db.backends.signals import connection_created [as 别名]
# 或者: from django.db.backends.signals.connection_created import send [as 别名]
def _cursor( self, settings = None ):
            if not self.__is_connection():
                if ( djangoVersion[0:2] <= ( 1, 0 ) ):
                    self.settings = settings
                    
                self.connection = self.get_new_connection(self.get_connection_params())
                cursor = self.databaseWrapper._cursor(self.connection)
                
                if( djangoVersion[0:3] <= ( 1, 2, 2 ) ):
                    connection_created.send( sender = self.__class__ )
                else:
                    connection_created.send( sender = self.__class__, connection = self )
            else:
                cursor = self.databaseWrapper._cursor( self.connection )  
            return cursor 

# 需要导入模块: from django.db.backends.signals import connection_created [as 别名]
# 或者: from django.db.backends.signals.connection_created import send [as 别名]
def _sqlite_create_connection(self):
        settings_dict = self.settings_dict
        if not settings_dict['NAME']:
            from django.core.exceptions import ImproperlyConfigured
            raise ImproperlyConfigured(
                "settings.DATABASES is improperly configured. "
                "Please supply the NAME value.")
        kwargs = {
            'database': settings_dict['NAME'],
            'detect_types': Database.PARSE_DECLTYPES | Database.PARSE_COLNAMES,
        }
        kwargs.update(settings_dict['OPTIONS'])
        # Always allow the underlying SQLite connection to be shareable
        # between multiple threads. The safe-guarding will be handled at a
        # higher level by the `BaseDatabaseWrapper.allow_thread_sharing`
        # property. This is necessary as the shareability is disabled by
        # default in pysqlite and it cannot be changed once a connection is
        # opened.
        if 'check_same_thread' in kwargs and kwargs['check_same_thread']:
            warnings.warn(
                'The `check_same_thread` option was provided and set to '
                'True. It will be overriden with False. Use the '
                '`DatabaseWrapper.allow_thread_sharing` property instead '
                'for controlling thread shareability.',
                RuntimeWarning
            )
        kwargs.update({'check_same_thread': False})
        self.connection = Database.connect(**kwargs)
        # Register extract, date_trunc, and regexp functions.
        self.connection.create_function("django_extract", 2, _sqlite_extract)
        self.connection.create_function("django_date_trunc", 2, _sqlite_date_trunc)
        self.connection.create_function("regexp", 2, _sqlite_regexp)
        self.connection.create_function("django_format_dtdelta", 5, _sqlite_format_dtdelta)
        connection_created.send(sender=self.__class__, connection=self) 

# 需要导入模块: from django.db.backends.signals import connection_created [as 别名]
# 或者: from django.db.backends.signals.connection_created import send [as 别名]
def _cursor(self):
        new_connection = False
        if not self._valid_connection():
            new_connection = True
            kwargs = {
                'conv': django_conversions,
                'charset': 'utf8',
            }
            if not six.PY3:
                kwargs['use_unicode'] = True
            settings_dict = self.settings_dict
            if settings_dict['USER']:
                kwargs['user'] = settings_dict['USER']
            if settings_dict['NAME']:
                kwargs['db'] = settings_dict['NAME']
            if settings_dict['PASSWORD']:
                kwargs['passwd'] = force_str(settings_dict['PASSWORD'])
            if settings_dict['HOST'].startswith('/'):
                kwargs['unix_socket'] = settings_dict['HOST']
            elif settings_dict['HOST']:
                kwargs['host'] = settings_dict['HOST']
            if settings_dict['PORT']:
                kwargs['port'] = int(settings_dict['PORT'])
            # We need the number of potentially affected rows after an
            # "UPDATE", not the number of changed rows.
            kwargs['client_flag'] = CLIENT.FOUND_ROWS
            kwargs.update(settings_dict['OPTIONS'])
            self.connection = Database.connect(**kwargs)
            self.connection.encoders[SafeText] = self.connection.encoders[six.text_type]
            self.connection.encoders[SafeBytes] = self.connection.encoders[bytes]
            connection_created.send(sender=self.__class__, connection=self)
        cursor = self.connection.cursor()
        if new_connection:
            # SQL_AUTO_IS_NULL in MySQL controls whether an AUTO_INCREMENT column
            # on a recently-inserted row will return when the field is tested for
            # NULL.  Disabling this value brings this aspect of MySQL in line with
            # SQL standards.
            cursor.execute('SET SQL_AUTO_IS_NULL = 0')
        return CursorWrapper(cursor) 

# 需要导入模块: from django.db.backends.signals import connection_created [as 别名]
# 或者: from django.db.backends.signals.connection_created import send [as 别名]
def _cursor(self):
        settings_dict = self.settings_dict
        if self.connection is None:
            if not settings_dict['NAME']:
                from django.core.exceptions import ImproperlyConfigured
                raise ImproperlyConfigured(
                    "settings.DATABASES is improperly configured. "
                    "Please supply the NAME value.")
            conn_params = {
                'database': settings_dict['NAME'],
            }
            conn_params.update(settings_dict['OPTIONS'])
            if 'autocommit' in conn_params:
                del conn_params['autocommit']
            if settings_dict['USER']:
                conn_params['user'] = settings_dict['USER']
            if settings_dict['PASSWORD']:
                conn_params['password'] = force_str(settings_dict['PASSWORD'])
            if settings_dict['HOST']:
                conn_params['host'] = settings_dict['HOST']
            if settings_dict['PORT']:
                conn_params['port'] = settings_dict['PORT']
            self.connection = Database.connect(**conn_params)
            self.connection.set_client_encoding('UTF8')
            tz = 'UTC' if settings.USE_TZ else settings_dict.get('TIME_ZONE')
            if tz:
                try:
                    get_parameter_status = self.connection.get_parameter_status
                except AttributeError:
                    # psycopg2 < 2.0.12 doesn't have get_parameter_status
                    conn_tz = None
                else:
                    conn_tz = get_parameter_status('TimeZone')

                if conn_tz != tz:
                    # Set the time zone in autocommit mode (see #17062)
                    self.connection.set_isolation_level(
                            psycopg2.extensions.ISOLATION_LEVEL_AUTOCOMMIT)
                    self.connection.cursor().execute(
                            self.ops.set_time_zone_sql(), [tz])
            self.connection.set_isolation_level(self.isolation_level)
            self._get_pg_version()
            connection_created.send(sender=self.__class__, connection=self)
        cursor = self.connection.cursor()
        cursor.tzinfo_factory = utc_tzinfo_factory if settings.USE_TZ else None
        return CursorWrapper(cursor)