Usage:
local p = jpath("$..test")
p({h={test=8}})Ex. test data
testData =
{
store = {
book = {
{
category = "reference",
author = "Nigel Rees",
title = "Sayings of the Century",
price = 8.95
},
{
category = "fiction",
author = "Evelyn Waugh",
title = "Sword of Honour",
price = 12.99
},
{
category = "fiction",
author = "Herman Melville",
title = "Moby Dick",
isbn = "0-553-21311-3",
price = 8.99
},
{
category = "fiction",
author = "J. R. R. Tolkien",
title = "The Lord of the Rings",
isbn = "0-395-19395-8",
price = 22.99
}
},
bicycle = {
color = "red",
price = 19.95
}
}
}Test cases
local function jpath2(str, expr)
local res = jpath(str)(expr)
print(str, "=", json.encode(res))
end
jpath2("$.foo.bar",{foo={b=9,bar=8}})
jpath2("$.foo.bar",{foo={b=9,bar=8}})
jpath2("$[foo].bar",{foo={b=9,bar=8}})
jpath2("$.foo['bar','b']",{foo={b=9,bar=8}})
jpath2("$.*",{foo={b=9,bar=8}})
jpath2("$..b",{foo={b=9,bar={b=7}}})
jpath2("$..[b][1]",{foo={b={7},bar={9}}})
jpath2("$[::-1]",{"a","b","c","d"})
jpath2("$[?(@.book > 3 || @.book==0)]",{boo=9,{book=5},{book=0},{book=3}})
jpath2("$.store.book[*].author",testData)
jpath2("$..author",testData)
jpath2("$.store.*",testData)
jpath2("$.store..price",testData)
jpath2("$..book[2]",testData)
--jpath2("$..book[(@.length-1)]",testData)
jpath2("$..book[-1:]",testData)
jpath2("$..book[1,2]",testData)
jpath2("$..book[?(@.isbn)]",testData)
jpath2("$..book[?(@.price<10)]",testData)
jpath2("$..*",testData)
jpath2("$[(2+2)]",{1,2,3,4})
jpath2("$[?(@.bar || @.foo)]",{a={foo=false}})
jpath2("$[?('b' in @..foo)]",{a={foo={'a','b'}},foo={'c','b'}})
jpath2("$[?(@..foo)]",{a={foo={'a','b'}},c={foo={'c','b'}} })
jpath2("$[?(@.a)]",{a={foo={'a','b'}},c={foo={'c','b'}} })
jpath2("$..[?(@.a>8)]",{a=9,c={a={'c','b'}} })
jpath2("$..[?(!@.a)]",{a=9,c={a={'c'},b=7}})Result:
$.foo.bar = [8]
$.foo.bar = [8]
$[foo].bar = [8]
$.foo['bar','b'] = [8,9]
$.* = [{"b":9,"bar":8}]
$..b = [9,7]
$..[b][1] = [7]
$[::-1] = ["d","c","b","a"]
$[?(@.book > 3 || @.book==0)] = [{"book":5},{"book":0}]
$.store.book[*].author = ["Nigel Rees","Evelyn Waugh","Herman Melville","J. R. R. Tolkien"]
$..author = ["Nigel Rees","Evelyn Waugh","Herman Melville","J. R. R. Tolkien"]
$.store.* = [{"price":19.95,"color":"red"},[{"price":8.95,"author":"Nigel Rees","title":"Sayings of the Century","category":"reference"},{"price":12.99,"author":"Evelyn Waugh","title":"Sword of Honour","category":"fiction"},{"category":"fiction","price":8.99,"author":"Herman Melville","title":"Moby Dick","isbn":"0-553-21311-3"},{"category":"fiction","price":22.99,"author":"J. R. R. Tolkien","title":"The Lord of the Rings","isbn":"0-395-19395-8"}]]
$.store..price = [19.95,8.95,12.99,8.99,22.99]
$..book[2] = [{"price":12.99,"author":"Evelyn Waugh","title":"Sword of Honour","category":"fiction"}]
$..book[-1:] = [{"category":"fiction","price":22.99,"author":"J. R. R. Tolkien","title":"The Lord of the Rings","isbn":"0-395-19395-8"}]
$..book[1,2] = [{"price":8.95,"author":"Nigel Rees","title":"Sayings of the Century","category":"reference"},{"price":12.99,"author":"Evelyn Waugh","title":"Sword of Honour","category":"fiction"}]
$..book[?(@.isbn)] = [{"category":"fiction","price":8.99,"author":"Herman Melville","title":"Moby Dick","isbn":"0-553-21311-3"},{"category":"fiction","price":22.99,"author":"J. R. R. Tolkien","title":"The Lord of the Rings","isbn":"0-395-19395-8"}]
$..book[?(@.price<10)] = [{"price":8.95,"author":"Nigel Rees","title":"Sayings of the Century","category":"reference"},{"category":"fiction","price":8.99,"author":"Herman Melville","title":"Moby Dick","isbn":"0-553-21311-3"}]
$..* = [{"bicycle":{"price":19.95,"color":"red"},"book":[{"price":8.95,"author":"Nigel Rees","title":"Sayings of the Century","category":"reference"},{"price":12.99,"author":"Evelyn Waugh","title":"Sword of Honour","category":"fiction"},{"category":"fiction","price":8.99,"author":"Herman Melville","title":"Moby Dick","isbn":"0-553-21311-3"},{"category":"fiction","price":22.99,"author":"J. R. R. Tolkien","title":"The Lord of the Rings","isbn":"0-395-19395-8"}]},{"price":19.95,"color":"red"},[{"price":8.95,"author":"Nigel Rees","title":"Sayings of the Century","category":"reference"},{"price":12.99,"author":"Evelyn Waugh","title":"Sword of Honour","category":"fiction"},{"category":"fiction","price":8.99,"author":"Herman Melville","title":"Moby Dick","isbn":"0-553-21311-3"},{"category":"fiction","price":22.99,"author":"J. R. R. Tolkien","title":"The Lord of the Rings","isbn":"0-395-19395-8"}],19.95,"red",{"price":8.95,"author":"Nigel Rees","title":"Sayings of the Century","category":"reference"},{"price":12.99,"author":"Evelyn Waugh","title":"Sword of Honour","category":"fiction"},{"category":"fiction","price":8.99,"author":"Herman Melville","title":"Moby Dick","isbn":"0-553-21311-3"},{"category":"fiction","price":22.99,"author":"J. R. R. Tolkien","title":"The Lord of the Rings","isbn":"0-395-19395-8"},8.95,"Nigel Rees","Sayings of the Century","reference",12.99,"Evelyn Waugh","Sword of Honour","fiction","fiction",8.99,"Herman Melville","Moby Dick","0-553-21311-3","fiction",22.99,"J. R. R. Tolkien","The Lord of the Rings","0-395-19395-8"]
$[(2+2)] = [4]
$[?(@.bar || @.foo)] = [{"foo":false}]
$[?('b' in @..foo)] = [{"foo":["a","b"]}]
$[?(@..foo)] = [{"foo":["c","b"]},{"foo":["a","b"]}]
$[?(@.a)] = []
$..[?(@.a>8)] = [{"a":["c","b"]}]
$..[?(!@.a)] = [9,7,["c"],"c"]