Script Development / MongoDB

The MongoDB connector operation object primarily provides some methods for operating on MongoDB.

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

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

`.db(...)`

Get the database operation object, parameters are as follows:

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

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()
# Written in one line
data = helper.db('some_db')['some_collection'].find_one()

`.run_method(...)`

The run_method() method is used to get the list of databases or collections, parameters are as follows:

Parameter	Type	Required / Default Value	Description
`method`	str	Required	Execution method, enumeration: `list_database_names`: List databases `list_collection_names`: List collections
`db_name`	str	`None`	Can be passed when executing `list_collection_names`, specify database; Not passing it defaults to the default database 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.