Chad Gregory
02/06/2023, 1:21 PM@Serializable
data class Job (
val information: JobInformation = JobInformation(),
val additional: AdditionalInformation = AdditionalInformation(),
val bom: PersistentList<BOM> = persistentListOf()
)
@Serializable
data class BOM(
@SerialName("comp_item")
val compItem: String = "",
val sequence: String = "",
@SerialName("comp_qty")
val compQty: String = "",
@SerialName("comp_uom")
val compUom: String = "",
val operation: String = "",
val type: String = ""
)
but when ktor client tries to decode the data from the request response I get this error
kotlinx.serialization.json.internal.JsonDecodingException: Expected class kotlinx.serialization.json.JsonObject (Kotlin reflection is not available) as the serialized body of kotlinx.serialization.Polymorphic<PersistentList>, but had class kotlinx.serialization.json.JsonArray (Kotlin reflection is not available)
I understand what the error is saying but I don't know how to fix it.Adam S
02/06/2023, 2:53 PMPersistentList
from kotlinx.collections? Have you set up custom serializers? https://github.com/Kotlin/kotlinx.collections.immutable/issues/63Chad Gregory
02/06/2023, 4:06 PM@Serializer(forClass = PersistentList::class)
class PersistentListSerializer<T>(private val dataSerializer: KSerializer<T>) : KSerializer<PersistentList<T>> {
private class PersistentListDescriptor<T> : SerialDescriptor by serialDescriptor<List<T>>() {
@ExperimentalSerializationApi
override val serialName: String = "kotlinx.serialization.immutable.persistentList"
}
override val descriptor: SerialDescriptor = PersistentListDescriptor<T>()
override fun serialize(encoder: Encoder, value: PersistentList<T>) {
return ListSerializer(dataSerializer).serialize(encoder, value.toList())
}
override fun deserialize(decoder: Decoder): PersistentList<T> {
return ListSerializer(dataSerializer).deserialize(decoder).toPersistentList()
}
}
Switched with Kapt to KSP because of this stupid error https://github.com/Kotlin/kotlinx.serialization/issues/1908#issuecomment-1105187175
but now I am getting a new error
E FATAL EXCEPTION: main
Process: com.example.testapp, PID: 22633
java.lang.IllegalStateException: Only KClass supported as classifier, got T
at kotlinx.serialization.internal.Platform_commonKt.kclass(Platform.common.kt:102)
at kotlinx.serialization.SerializersKt__SerializersKt.serializerByKTypeImpl$SerializersKt__SerializersKt(Serializers.kt:78)
at kotlinx.serialization.SerializersKt__SerializersKt.serializer(Serializers.kt:59)
at kotlinx.serialization.SerializersKt.serializer(Unknown Source:1)
at kotlinx.serialization.SerializersKt__SerializersKt.builtinSerializer$SerializersKt__SerializersKt(Serializers.kt:96)
at kotlinx.serialization.SerializersKt__SerializersKt.serializerByKTypeImpl$SerializersKt__SerializersKt(Serializers.kt:84)
at kotlinx.serialization.SerializersKt__SerializersKt.serializer(Serializers.kt:59)
at kotlinx.serialization.SerializersKt.serializer(Unknown Source:1)
at kotlinx.serialization.SerializersKt__SerializersKt.serializer(Serializers.kt:41)
at kotlinx.serialization.SerializersKt.serializer(Unknown Source:1)
at ca.on.listech.imm.util.PersistentListSerializer$PersistentListDescriptor.<init>(PersistentListSerializer.kt:31)
at ca.on.listech.imm.util.PersistentListSerializer.<init>(PersistentListSerializer.kt:22)
at ca.on.listech.imm.domain.models.Job$$serializer.childSerializers(Job.kt:10)
at kotlinx.serialization.internal.PluginGeneratedSerialDescriptor$childSerializers$2.invoke(PluginGeneratedSerialDescriptor.kt:36)
at kotlinx.serialization.internal.PluginGeneratedSerialDescriptor$childSerializers$2.invoke(PluginGeneratedSerialDescriptor.kt:36)
at kotlin.SafePublicationLazyImpl.getValue(LazyJVM.kt:107)
at kotlinx.serialization.internal.PluginGeneratedSerialDescriptor.getChildSerializers(PluginGeneratedSerialDescriptor.kt:36)
at kotlinx.serialization.internal.PluginGeneratedSerialDescriptor.getElementDescriptor(PluginGeneratedSerialDescriptor.kt:76)
at kotlinx.serialization.descriptors.SerialDescriptorKt$elementDescriptors$1$1.next(SerialDescriptor.kt:284)
at kotlinx.serialization.descriptors.SerialDescriptorKt$elementDescriptors$1$1.next(SerialDescriptor.kt:279)
at kotlinx.serialization.internal.PluginGeneratedSerialDescriptorKt.hashCodeImpl(PluginGeneratedSerialDescriptor.kt:137)
at kotlinx.serialization.internal.PluginGeneratedSerialDescriptor$_hashCode$2.invoke(PluginGeneratedSerialDescriptor.kt:44)
at kotlinx.serialization.internal.PluginGeneratedSerialDescriptor$_hashCode$2.invoke(PluginGeneratedSerialDescriptor.kt:44)
at kotlin.SafePublicationLazyImpl.getValue(LazyJVM.kt:107)
at kotlinx.serialization.internal.PluginGeneratedSerialDescriptor.get_hashCode(PluginGeneratedSerialDescriptor.kt:44)
at kotlinx.serialization.internal.PluginGeneratedSerialDescriptor.hashCode(PluginGeneratedSerialDescriptor.kt:97)
at java.util.concurrent.ConcurrentHashMap.get(ConcurrentHashMap.java:936)
at kotlinx.serialization.json.internal.DescriptorSchemaCache.get(SchemaCache.kt:35)
at kotlinx.serialization.json.internal.DescriptorSchemaCache.getOrPut(SchemaCache.kt:27)
at kotlinx.serialization.json.internal.JsonNamesMapKt.getJsonNameIndex(JsonNamesMap.kt:52)
at kotlinx.serialization.json.internal.StreamingJsonDecoder.decodeObjectIndex(StreamingJsonDecoder.kt:139)
at kotlinx.serialization.json.internal.StreamingJsonDecoder.decodeElementIndex(StreamingJsonDecoder.kt:92)
at ca.on.listech.imm.domain.models.Job$$serializer.deserialize(Job.kt:10)
at ca.on.listech.imm.domain.models.Job$$serializer.deserialize(Job.kt:10)
at kotlinx.serialization.json.internal.PolymorphicKt.decodeSerializableValuePolymorphic(Polymorphic.kt:59)
at kotlinx.serialization.json.internal.StreamingJsonDecoder.decodeSerializableValue(StreamingJsonDecoder.kt:36)
at kotlinx.serialization.encoding.AbstractDecoder.decodeSerializableValue(AbstractDecoder.kt:43)
at kotlinx.serialization.encoding.AbstractDecoder.decodeSerializableElement(AbstractDecoder.kt:70)
Adam S
02/06/2023, 4:08 PM@Serializer(forClass = PersistentList::class)
class PersistentListSerializer<T>(private val dataSerializer: KSerializer<T>)
annotating it with @Serializer
probably isn’t right@Serializer(forClass ...)
is used on independent objectsPersistentList
? What if you used a regular list, and then converted it via a property?
@Serializable
data class X(
private val boms: List<BOM>
) {
val bomsPersistent = boms.toPersistentList()
}
(tweak it to make it more accurate/a bit prettier)Chad Gregory
02/06/2023, 4:13 PMAdam S
02/06/2023, 4:16 PMChad Gregory
02/06/2023, 4:46 PMval getJob: Flow<Job> = cxt.job.data
suspend fun updateActiveJob(info: JobInformation, additional: AdditionalInformation, bom: List<BOM>) {
cxt.job.updateData {job ->
job.copy(
information = info,
additional = additional,
bom = job.bomList.mutate {
for (item in bom) {
it.add(item)
}
}
)
}
}
Adam S
02/06/2023, 4:50 PMChad Gregory
02/06/2023, 4:52 PM@Serializable
data class X(
private val bom: List<BOM>
) {
val bomList = bom.toPersistentList()
}
will there be an issue with getting the data out of the datastore via a Flow when the serializable data class does not have a PersistentList property?Adam S
02/06/2023, 4:56 PMbom
is structured like a listChad Gregory
02/06/2023, 4:59 PMAdam S
02/06/2023, 5:01 PMChad Gregory
02/06/2023, 5:01 PM