Comments (4)
We've got JsonPath and this is isomorphic. I have no preference but we should pick the winner!
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I've just tried to create a naive implementation of JsonPath in moshi using annotations but I think it is not possible right now. Just after I add an attribute to my annotation moshi stops matching the adapter.
In casy anybody would be interested in pushing this further, here is my code:
class JsonPathFactory : JsonAdapter.Factory {
override fun create(type: Type?, annotations: MutableSet<out Annotation>, moshi: Moshi): JsonAdapter<*>? {
val jsonPathAnnotation = annotations.firstOrNull { it.annotationClass == JsonPath::class }
if (jsonPathAnnotation != null) {
val path = Proxy.getInvocationHandler(jsonPathAnnotation).invoke(jsonPathAnnotation, JsonPath::class.java.declaredMethods.first { it.name == "path" }, arrayOf()) as String
return object : JsonAdapter<String>() {
@JsonPath()
override fun fromJson(reader: JsonReader): String? {
@Suppress("UNCHECKED_CAST")
val map = reader.readJsonValue() as Map<String, Any>
var currentNode = map
val pathSegments = path.split("/")
pathSegments.dropLast(1).forEach {
@Suppress("UNCHECKED_CAST")
currentNode = currentNode[it] as Map<String, Any>
}
return currentNode[pathSegments.last()] as String
}
override fun toJson(writer: JsonWriter?, @JsonPath value: String?) = Unit
}
}
return null
}
}
@Retention(AnnotationRetention.RUNTIME)
@JsonQualifier
annotation class JsonPath(val path: String = "")
from moshi.
Hey, any progress on the implementation of the JsonPointer?
from moshi.
from moshi.
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