JSONPath RW Extensions

jsonpath-rw-ext extends the capabilities of the jsonpath-rw library by integrating several powerful extensions such as 'len' for list length, 'sorted' for list sorting, 'arithmetic' for mathematical operations, and 'filter' for selective element extraction. These extensions were initially developed to be proposed upstream to jsonpath-rw and persist in jsonpath-rw-ext if not adopted. The library is currently active, with version 1.2.2, though its release cadence appears to be slow or maintenance-focused, with the last update in July 2019.