JsonPath expression to filter using regex

Question

We are using a tool which uses jayway library for evaluating JSONpath expression. Javascript does NOT seem to work with it. How can I use regular expression

Answer 1

For the record, a workaround for conditional regex in Goessner's javascript JSONpath would be to write the query as follow:

$.store.book[?(/^.*sword.*$/i.test(@.title))]

Please see here https://github.com/jpaquit/jsonpath/tree/0.8.5-+-regexp for "=~" syntax in JS lib.

Answer 2

You could use capturing group or lookbehind assertion.

"title":\s*"([^"]*\bSword\b[^"]*)"

Add case-insensitive modifier i if necessary. Grab the title string from group index 1.

DEMO

Answer 3

The Jayway implementation uses the Ruby regex operator:

$.store.book[?(@.title =~ /^.*Sword.*$/)]

To ignore case:

$.store.book[?(@.title =~ /^.*sword.*$/i)]