Container Output (JSON)

Reads the content of a JSON column and makes it available to an external caller. This node is used in workflows deployed as REST services, where the result of the web service is represented by the input of this node. By default a JSON array is returned, where each row of the input table is an element in the array. Tables with no or only one row result in an array with zero or one element. This behavior can be changed in the dialog, see the settings below.

Options

Parameter Name
A name, which serves as key in the resulting JSON object. This is used to assert uniqueness in case multiple output results (nodes) are present in workflow.
Append unique ID to parameter name
If checked, the name set above will be amended by the node's ID to guarantee unique parameter names. Usually it's a good idea to have this box not checked and instead make sure to use meaningful and unique names in all container nodes present in a workflow.
JSON Column
The column containing the JSON result. All other columns are ignored.
Description
A description for the output parameter. The description is shown in the API specification of the REST interface.
Keep single-row tables simple
For the special case that the input table contains one row with a non-missing JSON value this value is taken as result and not wrapped into a JSON array.
Example
A JSON representing an example of what output received by this node may look like. Mainly used for populating the "example" field of the generated OpenAPI output parameter specification, which is presented to end users for documentation purposes. The content of this node can be filled from input data (if preceding nodes are executed.)

Input Ports

Icon
A table containing a JSON column whose content is made available to the caller.

Output Ports

This node has no output ports

Popular Predecessors

Popular Successors

Views

JSON Snapshot
Shows the JSON structure as read from the input (possibly converted into JSON array)

Workflows

Links

Developers

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Installation

To use this node in KNIME, install the extension KNIME JSON-Processing from the below update site following our NodePit Product and Node Installation Guide:

v5.3

A zipped version of the software site can be downloaded here.

Plugin provider: KNIME AG, Zurich, Switzerland
Plugin version: 5.3.0.v202406280759
On NodePit since: 2024-07-09
Last update: 2024-11-21
KNIME versions: Since v3.6

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