drb-driver-json 1.3.0

DRB json driver

JsonNode Implementation

This drb-driver-json module implements json format access with DRB data model. It is able to navigates among the json contents.

Json Factory and Json Node

The module implements the basic factory model defined in DRB in its node resolver. Based on the python entry point mechanism, this module can be dynamically imported into applications.

The entry point group reference is drb.driver.
The driver name is json.
The factory class JsonNodeFactory is encoded into drb.drivers.json.factory.

The json factory creates a JsonNode from an existing json content. It uses a base node to access the content data using the streamed base node implementation.

The base node can be a FileNode (See drb), HttpNode, ZipNode or any other node able to provide streamed (BufferedIOBase, RawIOBase, IO) json content.

limitations

The current version does not manage child modification and insertion. JsonNode is currently read only.

Using this module

To include this module into your project, the drb-driver-json module shall be referenced into requirement.txt file, or the following pip line can be run:

pip install drb-driver-json

Node Creation:

The driver can create a JsonNode by giving the path to a json file:

from drb.drivers.json import DrbJsonNode

node = JsonNode(PATH_JSON)

the driver can also give a dictionary in argument:

from drb.drivers.json import DrbJsonNode

DICT = { 
        "id":"01", 
        "name": "Tom", 
        "lastname": "Price" 
     }
node = JsonNode(NAME_OF_YOUR_NODE, data = DICT)

If the baseNode is an HttpNode, FileNode... the driver can retrieve the data of your Json with this:

from drb.drivers.json import JsonNodeFactory

FACTORY = JsonNodeFactory()
FILE_NODE = DrbFileNode(PATH_TO_YOUR_JSON)
NODE = FACTORY.create(FILE_NODE)

Different types of data

data	JSON Type	Python Type
null	null	None
true/false	boolean	bool
'hello World'	string	str
1	int	int
1.0	number	float
[...]	array	list
{...}	object	dict

Documentation

The documentation of this driver can be found here https://drb-python.gitlab.io/impl/json