Nested Objects

[anti43]

Hi, Is it possible to deserialize nested Objects? Given classes

class A{
    String name
}

class B {
   int prop
   A someA
}

and json

[
   {
     "someA": {
          "name": "test1"
      },
    "prop": 2323
   },
   {
     "someA": {
          "name": "test2"
      },
    "prop": 2324
   }
]

is this supposed to work with

Joniterator.parse(json).read(B[].class)

?

I am getting error messages

com.jsoniter.spi.JsonException: readString: expect string or null, but 0, head: 444, peek: cInKmh": Of course the class and json struct for real is much more complex, but the idea is the same. What might be wrong here? With gson, it just worked with same json code.

[taowen]

public static class A{
        String name;
    }
    public static class B {
        int prop;
        A someA;
    }
    public void test_abc1() throws IOException {
        JsonIterator.parse("[\n" +
                "   {\n" +
                "     \"someA\": {\n" +
                "          \"name\": \"test1\"\n" +
                "      },\n" +
                "    \"prop\": 2323\n" +
                "   },\n" +
                "   {\n" +
                "     \"someA\": {\n" +
                "          \"name\": \"test2\"\n" +
                "      },\n" +
                "    \"prop\": 2324\n" +
                "   }\n" +
                "]").read(B[].class);
    }

It is not throwing exception on my machine. Please check the input codec. Only UTF-8 is supported.

[anti43]

This is the json failing:

{"country": "FRA","speedCategory": "4","typeName": "ExpressHighway","dist": 0,"lon": 5.757277,"isBridge": "N","latMatched": 49.53308,"roadName": "N52","possibleSpeed": 90,"laneCategory": "2","signs": [],"routeLinkSeqNum": 2,"lonMatched": 5.75726,"pois": [],"lat": 49.53308,"bearing": 0,"index": 4,"speedLimit": 90,"loc_id": 904,"isTunnel": "N","routeTypesMask": "4","linkId": 1175216557,"urban": "N","traficInKmh": 0,"capitalsOnLink": [],"lowMobility": "3","isLongHaul": "N","fc": 2,"clazz": 11}

so probably its not about nested objects, but what is it? Its UTF8 and and jsonlint reports it as OK

expect string or null, but 0, head: 4944, peek: cInKmh"

[paulpolushkin]

I get the same error when "traficInKmh" property has String type in Java class but in JSON it has not quotes as in the example above

[taowen]

@paulpolushkin if type is string, the JSON should have quotes.

@anti43 can you provide your class definition?

[anti43]

Hi, @paulpolushkin is right, the property is declared as String but its an int for real. Maybe the error message should be a little bit more clear.

e.g expect string TYPE or null, but found INT property, head: 4944, peek: cInKmh"

:) Dont you think String type should work for anything?

[sidohin-felix]

Hi guys,

I am also having a similar issue, however mine occurs specifically when a HashMap is involved - was wondering if it is somehow related.

We feed the following string (which is actually produced by Jsoniter):

{"enabled":false,"configId":"1878267263773732","minRequiredEmploymentPeriodMetric":"MONTH","minRequiredEmploymentPeriod":1,"allowedWithdrawalRatio":70,"payrollCutoffMetric":"DAY","payrollCutoff":3,"payrollConfiguration":{"day2":15,"payrollMode":"DAY_OF_MONTH","day1":1,"payrollFrequencyMetric":null,"payrollFrequency":0,"payrollDay":null},"employeeId":null,"locationId":null,"companyId":"126262","configurationScope":"COMPANY","lockedProperties":["minRequiredEmploymentPeriodMetric"],"gatewayConfigurations":{"ASI":{"gatewayName":"ASI","paymentDestinationConfigurations":{"DEBIT_CARD":{"enabled":true,"maxWithdrawalCount":1}}}}}

into the iterator and end up with the following error:

com.jsoniter.spi.JsonException: readSlice: expect " for string, head: 574, peek: tions":{"D, buf: {"enabled":false,"configId":"1878267263773732","minRequiredEmploymentPeriodMetric":"MONTH","minRequiredEmploymentPeriod":1,"allowedWithdrawalRatio":70,"payrollCutoffMetric":"DAY","payrollCutoff":3,"payrollConfiguration":{"day2":15,"payrollMode":"DAY_OF_MONTH","day1":1,"payrollFrequencyMetric":null,"payrollFrequency":0,"payrollDay":null},"employeeId":null,"locationId":null,"companyId":"126262","configurationScope":"COMPANY","lockedProperties":["minRequiredEmploymentPeriodMetric"],"gatewayConfigurations":{"ASI":{"gatewayName":"ASI","paymentDestinationConfigurations":{"DEBIT_CARD":{"enabled":true,"maxWithdrawalCount":1}}}}}

Any idea why this could happen?

[sidohin-felix]

Actually to give you some background - the problem disappears when we set the HashMap key to be a String - the problem occurs when the key is an enum.