Overview

Use a JSON to process JSON in string format, and convert it into specific data objects that can be used by PhixFlow for processing. The JSON Action Node extracts one or more records from the provided JSON object using the JSON path specified.

Properties Tab

Basic Settings

Expects literal values or expressions encapsulated within ${} syntax, for example ${in.MyValue}.

Field	Description	Example Value
Name	Name given to the action node. This will be displayed on the actionflow canvas.	MyJSONReader
Input Expression		// consist of the name of the pipe and the name of a // mapped attribute. `in.body`
Use Strict JSON parsing	A template that computes to the URL of the request. Expects literal values or expressions encapsulated within ${} syntax, for example `${in.MyValue}`.
Path	The JSON Path expression is evaluated against the Input Data and returns a list of JSON nodes Items. It can be used o specify which objects are extracted from the JSON.	// JSON Path `$.main_page.title`

Input Connection Points

Can Accept a single Driving input connection point.

The grid contains a list of all input connection points and their type.

To add a new input connection point, in the section toolbar click Add New to open a new input connection point and set its properties; see Input Connection Points.
To edit an existing input connection point, double-click it in the list to open its properties.
To remove an input connection point, select one and in the section toolbar click Delete.

Output Connection Points

This section has a toolbar with standard buttons. The grid contains a list of all output connection points.

To add a new output path, in the section toolbar click Add New to open a new output path and set the expression; see Output Connection Points.
To edit an existing output path, double-click it in the list to open its properties.
To remove an output path, select one and in the section toolbar click Delete.

Output Attributes

JSON is converted into data objects that can be used by PhixFlow, this information is accessed using the syntax, _result.AttributeName.

Worked Example

Below is an example JSON object passed to the JSON Action Node:

// Example JSON string.
{
    "main_page": {
        "page": "PF Main Page",
        "title": {
            "name": "PF Title Text,
            "data": [
                {"initials": "AA", "value" : "Alistair Andrews"},
                {"initials": "BB", "value" : "Bert Brown"}
            ]
        }
    }
}

JSON Path: $.main_page.title

This path will bring back all elements matching the JSON path including the parent/grandparents and all child elements.

The following examples show how to reference the returned JSON data:

_result.name, returns PF Title Text
_result.^.page, returns PF Main Page
1. The ^ traverses up the JSON hierarchy.
listToString(_result.data.initials), returns "AA, BB"
1. Because there are multiple items against _result.data. initials an array of data returned. See Array Handling Functions.

Note the use of:

^ traverses up the hierarchy 1 layer.
. tranverses down the heirach 1 layer.

Learn More

For links to all pages in this topic, see Understanding Actionflows.