Using JSONPath get only 2 key-value pair when a condition is met - filter

Question

With the following json object.
{ "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
}
],
"bicycle": {
"color": "red",
"price": 19.95
}
}
}
Using JSONPath. Is there any expression that can get only the key-value pair "author" and "title" for all books costing less that 13.00. The result will be something like:
[{
"author": "Nigel Rees",
"title": "Sayings of the Century"
}, {
"author": "Evelyn Waugh",
"title": "Sword of Honour"
}, {
"author": "Herman Melville",
"title": "Moby Dick"
}
]
I started with $.store.book[?(#.price < 13)] but this gets all the elements on each book costing less than 13.00. Not the desired behavior. Any help is much appreciated.

Answer 1

You are close; this expression:
$.store.book[?(#.price < 13)]["author","title"]
or, depending on the implementation
$.store.book[?(#.price < 13)][]author,title
should get you
[
{
"author" : "Nigel Rees",
"title" : "Sayings of the Century"
},
{
"author" : "Evelyn Waugh",
"title" : "Sword of Honour"
},
{
"author" : "Herman Melville",
"title" : "Moby Dick"
}
]
or
[
"Nigel Rees",
"Sayings of the Century",
"Evelyn Waugh",
"Sword of Honour",
"Herman Melville",
"Moby Dick"
]