Script Development / mongoDB

The mongoDB Connector operation object mainly provides some methods to operate mongoDB.

DFF.CONN(...) parameters are as follows:

Parameter	Type	Required / Default	Description
`connector_id`	str	Required	Connector ID
`database`	str	`None`	Specified database

`.db(...)`

Get the database operation object, parameters are as follows:

Parameter	Type	Required / Default	Description
`db_name`	str	`None`	Database name. When no name is passed, the default database operation object is returned.

Example
# Get the default database object
db = helper.db()
# Get the specified database object
db = helper.db('some_db')
# Get the collection object
collection = db['some_collection']
# Query processing
data = collection.find_one()
# Write in one line
data = helper.db('some_db')['some_collection'].find_one()

`.run_method(...)`

The run_method() method is used to get the database list or collection list, parameters are as follows:

Parameter	Type	Required / Default	Description
`method`	str	Required	Execution method, enumeration: `list_database_names`: List databases `list_collection_names`: List collections
`db_name`	str	`None`	When executing `list_collection_names`, specify the database; If not passed, the default database is used Must be passed as a named parameter

Example
db_list = helper.run_method('list_database_names')
collection_list = helper.run_method('list_collection_names')
collection_list = helper.run_method('list_collection_names', db_name='some_db')

For specific query syntax, format, etc., please refer to the official mongoDB documentation.