jsoncpp compilation error for Json::Value type

Question

This is the schema:

{
"definitions": {
    "properties": {
        "Count": {
            "type": [
                "number",
                "null"
            ]
        }
    }
}

} I want to read members in "type"

I tried to attempt in many ways, e.g.

if(val["definitions"]["properties"]["Count"]["type"][0] == "number" and 
(val["definitions"]["properties"]["Count"]["type"][1] == "null"))
{
    //code here
}

This leads to the following error

error : terminate called after throwing an instance of 'Json::LogicError' what(): in Json::Value::operator: requires arrayValue Aborted (core dumped)

And for this piece of code

if (val["definitions"]["properties"]["Count"]["type"][0].isMember("number") and 
(val["definitions"]["properties"]["Count"]["type"][0].isMember("null"))){
    //code here
}

I get

error: terminate called after throwing an instance of 'Json::LogicError' what(): in Json::Value::find(key, end, found): requires objectValue or nullValue Aborted (core dumped)

Count is written using an uppercase C in your JSON and lowercase c in your code - is that intentional? — UnholySheep
– UnholySheep, Commented Jan 11, 2018 at 7:55
That is mistake while drafting here. Sorry, Now I have modified here. — Sundeep Kumar Gorantla
– Sundeep Kumar Gorantla, Commented Jan 11, 2018 at 8:01

Wagner Patriota · Accepted Answer · 2018-01-11 08:12:44Z

0

You code is right... your json is wrong... JsonCpp needs the quotes for "definitions" and you can't have extra commas after the last item in an array or object.

just change it to:

{
    "definitions": {
        "properties": {
            "Count": {
                "type": [
                    "number",
                    "null"
                ]
            }
        }
    }
}

;-)

answered Jan 11, 2018 at 8:12

Wagner Patriota

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3 Comments

Sundeep Kumar Gorantla Over a year ago

Actually the JSON code presented here is part of some valid JSON schema (DMTF Redfish schemas). The issue is with code itself.

Wagner Patriota Over a year ago

Change the JSON, try it by yourself... remove the commas and put quotes. It will start to work.

Sundeep Kumar Gorantla Over a year ago

That is what I dont understand...everything seems correct....but it was showing the error.

Sundeep Kumar Gorantla · Accepted Answer · 2018-02-05 14:43:50Z

0

 const Json::Value obj=val["definitions"]["properties"]["count"]["type"];
    if (std::find(obj.begin(),obj.end(),"string")!=obj.end() and 
 std::find(obj.begin(),obj.end(),"null")!=obj.end()){
    // code here;
    }

answered Feb 5, 2018 at 14:43

Sundeep Kumar Gorantla

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