some updates

src/main/kotlin/com/restapi/Test.kt

@@ -0,0 +1,74 @@
+package com.restapi
+
+import com.fasterxml.jackson.core.JsonParser
+import com.fasterxml.jackson.databind.DeserializationContext
+import com.fasterxml.jackson.databind.JsonDeserializer
+import com.fasterxml.jackson.databind.JsonNode
+import com.fasterxml.jackson.databind.annotation.JsonDeserialize
+import com.fasterxml.jackson.module.kotlin.jacksonObjectMapper
+import com.fasterxml.jackson.module.kotlin.readValue
+import com.restapi.controllers.QueryParam
+import com.restapi.controllers.RawQuery
+
+class FDeserializer : JsonDeserializer<F>() {
+    override fun deserialize(p: JsonParser, p1: DeserializationContext?): F {
+        //custom logic to do thia
+        val node = p.readValueAsTree<JsonNode>()
+
+        if (node.isObject) {
+            if (node.has("name")) {
+                return F.P(name = node.get("name").textValue())
+            } else if (node.has("num")) {
+                return F.Q(num = node.get("num").textValue())
+            } else if (node.has("tag")) {
+                return F.D(tag = node.get("tag").textValue())
+            }
+
+        } else {
+            //incorrect
+        }
+        throw IllegalArgumentException()
+    }
+
+}
+val om = jacksonObjectMapper()
+
+@JsonDeserialize(using = FDeserializer::class)
+sealed interface F {
+    data class P(val name: String) : F
+    data class Q(val num: String) : F
+    data class D(val tag: String) : F
+}
+
+val j = """
+    {"name":"a"}
+""".trimIndent()
+
+val j2 = """
+    {"num":"a"}
+""".trimIndent()
+
+val j3 = """
+    {"tag":"a"}
+""".trimIndent()
+
+val j4 = """
+    {
+    "sql":"aaaa",
+    "params": {
+            "a":"b",
+            "c": {
+                "type":"STRING",
+                "value":"aaaa"
+             }
+            
+        }
+    }
+""".trimIndent()
+
+fun main() {
+    println(om.readValue<F>(j))
+    println(om.readValue<F>(j2))
+    println(om.readValue<F>(j3))
+    println(om.readValue<RawQuery>(j4))
+}