StreamableDeprecatedJSON related functionality for KNIME version 4.3.0.v202011191521 by KNIME AG, Zurich, Switzerland
JSONPath is a similar to XPath alternative for JSON.
The result can be a single value or a list of multiple values.
There are two notations, dot-notation:
$.book.title and bracket-notation:
$['book']['title'] (indexing starts from
0, negative indices are relative to the last element).
"author": "Michael Crichton"},
"title": "Plain Truth",
"author": "Jodi Picoult"}
"author": "Michael Crichton"} (JSON or String single value)
[1999,2000] (JSON or Int or Real list)
? (no such part)
Timeline (String) or
The default path (
$..*) will select all possible subparts (excluding the whole JSON value).
When you request the paths instead of values for the
$.book.* JSONPath, you will get the paths -in bracket notation- as a list of Strings:
?(expr)can be used to select contents with specific properties, for example
$..book[?(@.publisher)] selects the books that specify their publisher (
@ refers to the actual element).
To use this node in KNIME, install KNIME JSON-Processing from the following update site:
A zipped version of the software site can be downloaded here.
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