I have a data class for a currency conversion rate response.
I keep getting this error: Rejecting invocation, expected 76 argument registers, method signature has 78 or more ...
as you can see below. (the Conversion Rates class has more than 160 currency)
I"m using Ktor client, and my data classes looks like this:
@Entity(tableName = "exchange")
@Serializable
data class Exchange(
val base_code: String,
@Contextual
val conversion_rates: ConversionRates,
val documentation: String,
val result: String,
val terms_of_use: String,
@PrimaryKey
val time_last_update_unix: Int,
val time_last_update_utc: String,
val time_next_update_unix: Int,
val time_next_update_utc: String
)
@Serializable
data class ConversionRates(
val AED: Double,
val AFN: Double,
val ALL: Double,
val AMD: Double,
val ANG: Double,
val AOA: Double,
val ARS: Double,
val AUD: Double,
val AWG: Double,
val AZN: Double,
val BAM: Double,
val BBD: Double,
val BDT: Double,
val BGN: Double,
...
failed with exception: java.lang.VerifyError: Verifier rejected class com.example.testingxml.data.models.ConversionRates$$serializer: com.example.testingxml.data.models.ConversionRates com.example.testingxml.data.models.ConversionRates$$serializer.deserialize(kotlinx.serialization.encoding.Decoder) failed to verify: com.example.testingxml.data.models.ConversionRates com.example.testingxml.data.models.ConversionRates$$serializer.deserialize(kotlinx.serialization.encoding.Decoder): [0x10F0] Rejecting invocation, expected 76 argument registers, method signature has 78 or more (declaration of 'com.example.testingxml.data.models.ConversionRates$$serializer' appears in /data/data/com.example.testingxml/code_cache/.overlay/base.apk/classes7.dex) 2022-07-17 16:23:27.926 8855-8855 AndroidRuntime com.example.testingxml E FATAL EXCEPTION: main
I tried to use hashmap/ TreeMap... that didn't work because Kotlin couldn't cast the response to it.
any solution?
UPDATE The Json Response I get
{
"result":"success",
"documentation":"https://www.exchangerate-api.com/docs",
"terms_of_use":"https://www.exchangerate-api.com/terms",
"time_last_update_unix":1658016002,
"time_last_update_utc":"Sun, 17 Jul 2022 00:00:02 0000",
"time_next_update_unix":1658102402,
"time_next_update_utc":"Mon, 18 Jul 2022 00:00:02 0000",
"base_code":"USD",
"conversion_rates":{
"USD":1,
"AED":3.6725,
"AFN":87.9897,
"ALL":116.9156,
"AMD":413.3227,
"ANG":1.7900,
"AOA":431.4219,
"ARS":127.5711,
"AUD":1.4762,
"AWG":1.7900,
"AZN":1.6932,
"BAM":1.9426,
"BBD":2.0000,
"BDT":93.1628,
"BGN":1.9427,
"BHD":0.3760,
"BIF":2032.0309,
"BMD":1.0000,
"BND":1.3978,
"BOB":6.8633,
"BRL":5.4199,
"BSD":1.0000,
"BTN":79.8199,
"BWP":12.8324,
"BYN":2.8230,
"BZD":2.0000,
"CAD":1.3050,
"CDF":1988.6057,
"CHF":0.9782,
"CLP":1047.4250,
"CNY":6.7686,
"COP":4573.0573,
"CRC":686.8741,
"CUP":24.0000,
"CVE":109.5198,
"CZK":24.2810,
"DJF":177.7210,
"DKK":7.4100,
"DOP":54.7252,
"DZD":147.0795,
"EGP":18.8746,
"ERN":15.0000,
"ETB":51.8192,
"EUR":0.9932,
"FJD":2.2271,
"FKP":0.8452,
"FOK":7.4100,
"GBP":0.8452,
"GEL":2.8469,
"GGP":0.8452,
"GHS":8.3242,
"GIP":0.8452,
"GMD":53.9357,
"GNF":8643.2884,
"GTQ":7.7432,
"GYD":208.4165,
"HKD":7.8518,
"HNL":24.5589,
"HRK":7.4836,
"HTG":114.4866,
"HUF":398.6438,
"IDR":14976.7866,
"ILS":3.4749,
"IMP":0.8452,
"INR":79.8209,
"IQD":1454.0600,
"IRR":42056.7004,
"ISK":138.3686,
"JEP":0.8452,
"JMD":151.4748,
"JOD":0.7090,
"JPY":138.7800,
"KES":117.9526,
"KGS":81.3321,
"KHR":4065.7093,
"KID":1.4762,
"KMF":488.6430,
"KRW":1321.7446,
"KWD":0.2996,
"KYD":0.8333,
"KZT":480.8824,
"LAK":16868.6002,
"LBP":1507.5000,
"LKR":356.0525,
"LRD":152.3277,
"LSL":17.0698,
"LYD":4.8552,
"MAD":9.9367,
"MDL":19.3046,
"MGA":4084.1272,
"MKD":61.1373,
"MMK":1834.4490,
"MNT":3130.7286,
"MOP":8.0873,
"MRU":36.7687,
"MUR":44.7852,
"MVR":15.4430,
"MWK":1033.6225,
"MXN":20.6318,
"MYR":4.4398,
"MZN":64.4837,
"NAD":17.0698,
"NGN":413.4387,
"NIO":35.8600,
"NOK":10.1891,
"NPR":127.7119,
"NZD":1.6266,
"OMR":0.3845,
"PAB":1.0000,
"PEN":3.9116,
"PGK":3.5170,
"PHP":56.3397,
"PKR":209.4856,
"PLN":4.7442,
"PYG":6855.2462,
"QAR":3.6400,
"RON":4.8888,
"RSD":116.5282,
"RUB":57.7811,
"RWF":1058.9331,
"SAR":3.7500,
"SBD":8.0297,
"SCR":13.0412,
"SDG":461.6883,
"SEK":10.5059,
"SGD":1.3978,
"SHP":0.8452,
"SLE":13.6370,
"SLL":13636.9704,
"SOS":576.2883,
"SRD":22.3936,
"SSP":544.8830,
"STN":24.3344,
"SYP":2526.6716,
"SZL":17.0698,
"THB":36.6993,
"TJS":10.4715,
"TMT":3.4981,
"TND":2.8755,
"TOP":2.3438,
"TRY":17.4168,
"TTD":6.7612,
"TVD":1.4762,
"TWD":29.8712,
"TZS":2320.8657,
"UAH":31.0508,
"UGX":3768.5019,
"UYU":40.3063,
"UZS":10908.3372,
"VES":5.6990,
"VND":23432.6566,
"VUV":119.1620,
"WST":2.7261,
"XAF":651.5240,
"XCD":2.7000,
"XDR":0.7635,
"XOF":651.5240,
"XPF":118.5255,
"YER":249.9997,
"ZAR":17.0702,
"ZMW":16.4457,
"ZWL":395.1049
}
}
the line that produces the error
_exchangeRates.emit((it.data as Exchange).conversion_rates.toConversionItem())
The Errors I get
java.lang.ClassCastException: com.example.testingxml.util.status.NetworkRequest$Success cannot be cast to com.example.testingxml.data.models.Exchange
java.lang.VerifyError: Verifier rejected class com.example.testingxml.data.models.ConversionRates$$serializer: com.example.testingxml.data.models.ConversionRates com.example.testingxml.data.models.ConversionRates$$serializer.deserialize(kotlinx.serialization.encoding.Decoder) failed to verify: com.example.testingxml.data.models.ConversionRates com.example.testingxml.data.models.ConversionRates$$serializer.deserialize(kotlinx.serialization.encoding.Decoder): [0x10F0] Rejecting invocation, expected 76 argument registers, method signature has 78 or more (declaration of 'com.example.testingxml.data.models.ConversionRates$$serializer' appears in /data/data/com.example.testingxml/code_cache/.overlay/base.apk/classes7.dex)
Could not remove dir '/data/data/com.example.testingxml/code_cache/.ll/': No such file or directory
Update 2
My Ktor Client:
object Client {
val client = HttpClient(Android) {
install(Logging) {
logger = object : Logger {
override fun log(message: String) {
Log.d(KTOR_CLIENT_LOGGER, message)
}
}
level = LogLevel.ALL
}
install(ContentNegotiation) {
val converter = KotlinxSerializationConverter(Json {
ignoreUnknownKeys = true
prettyPrint = true
isLenient = true
})
register(Json, converter)
register(ContentType.Application.OctetStream, converter)
}
engine {
socketTimeout = KTOR_TIMEOUT
connectTimeout = KTOR_TIMEOUT
sslManager = { HttpsURLConnection ->
HttpsURLConnection.sslSocketFactory = SslSettings.getSslContext()!!.socketFactory
}
}
defaultRequest {
contentType(Json)
}
}
}
My Repository
override fun getAllFromApi(mainCurrency: String): Flow<RepositoryStatus> = flow {
currencyApi.getCurrencyRate(mainCurrency).collect {networkRequest ->
when (networkRequest) {
is NetworkRequest.Failure -> emit(RepositoryStatus.Failure(networkRequest.error))
is NetworkRequest.Success<*> -> emit(RepositoryStatus.Success(networkRequest))
}
}
}.flowOn(Dispatchers.IO)
my Api
override fun getCurrencyRate(mainCurrency: String): Flow<NetworkRequest> = flow {
try {
val result = client.get(Routes.Api.url.plus(mainCurrency))
if (result.status == HttpStatusCode.OK) emit(NetworkRequest.Success(result.body<Exchange>()))
else emit(NetworkRequest.Failure(result.toString()))
} catch (e: ClientRequestException) {
emit(NetworkRequest.Failure(e.message))
} catch (e: ServerResponseException) {
emit(NetworkRequest.Failure(e.message))
} catch (e: IOException) {
emit(NetworkRequest.Failure(e.localizedMessage!!))
} catch (e: SerializationException) {
emit(NetworkRequest.Failure(e.localizedMessage!!))
}
}.flowOn(Dispatchers.IO)
CodePudding user response：
There is a known bug with the maximum number of fields supported by the automatic serialization routine.
Say you have a large data class (more than about 250 entries) to represent a nested object in a container class (like you have):
@Serializable
data class LargeData(
val x1: String,
val x2: String,
val x3: String,
val x4: String,
//...
val x258: String,
val x259: String,
val x260: String,
)
@Serializable
data class Container(
val name: String,
val rates: LargeData
)
When you attempt to serialize/deserialize it you will get an error about having too many arguments. To get around it, you could just store the data in a map then you can work with unlimited entries
@Serializable
data class Container(
val name: String,
val rates: Map<String,Double>
)
In your case, you could just convert the large ConversionRates data class into a map, like this:
@Serializable
data class Exchange(
val base_code: String,
val conversion_rates: Map<String,Double>, // change this line, and remove the ConversionRates data class
val documentation: String,
val result: String,
val terms_of_use: String,
@PrimaryKey
val time_last_update_unix: Int,
val time_last_update_utc: String,
val time_next_update_unix: Int,
val time_next_update_utc: String
)
If you want to isolate the JSON part from the rest of your app, you could add a unit test that just takes a JSON string and checks that it can deserialize it
class JSONUnitTest {
private val testJson = "{\"name\":\"some name\"}"
@Test
fun testJson() {
val t2 = Json.decodeFromString<Exchange>(testJson)
println(t2)
}
}