jsonpath
select(object json, string path)
Evaluates JsonPath expression and returns the resulting JSON object. It uses the Jayway JsonPath implementation and fully supports JsonPath specification.
Example
Payload
{
"store": {
"book": [
{
"category": "reference",
"author": "Nigel Rees",
"title": "Sayings of the Century",
"price": 8.95
},
{
"category": "fiction",
"author": "Evelyn Waugh",
"title": "Sword of Honour",
"price": 12.99
},
{
"category": "fiction",
"author": "Herman Melville",
"title": "Moby Dick",
"isbn": "0-553-21311-3",
"price": 8.99
},
{
"category": "fiction",
"author": "J. R. R. Tolkien",
"title": "The Lord of the Rings",
"isbn": "0-395-19395-8",
"price": 22.99
}
]
}
}
DataSonnet map:
{
author: ds.jsonpath.select(payload, "$..book[-2:]..author")[0]
}
Result
{
"author": "Herman Melville"
}