How to save and retrieve a JSON directly in latest version of RealmDB in Android during runtime without model classes Using RealmDB - Kotlin 1.16.0+

I need to store and retrieve a JSON in ReamDB in runtime without creating a RealmObject for that. Also want to check whether the particular JSON object is present in the DB already using a giving field (like “id”). If it exists, then update the object,If not, then save it as new object.

How to do this in latest version of RealmDB 1.16+ Kotlin SDK in Android.

I searched internet but all examples throw “unresolved references” for classes. It seems they are deprecated and removed.

Please help me.

Ooh.

@Tyler_Kaye I need Realm-Kotlin alternative for this ::

import android.util.Log
import androidx.lifecycle.ViewModel
import io.realm.DynamicRealm
import io.realm.DynamicRealmObject
import io.realm.Realm
import io.realm.RealmConfiguration
import io.realm.kotlin.where
import org.json.JSONObject

class RealmDbViewModel : ViewModel() {

    fun saveJsonToRealm(jsonString: String, primaryKeyField: String) {
        // Convert the jsonString to a JSONObject
        val json = JSONObject(jsonString)
        val realm = Realm.getDefaultInstance()
        try {
            val dynamicRealm = DynamicRealm.getInstance(realm.configuration)
            dynamicRealm.executeTransaction { transactionRealm ->
                // Create or update the schema dynamically
                val schema = transactionRealm.schema
                if (!schema.contains("sample")) {
                    schema.create("sample")
                        .addField(primaryKeyField, String::class.java)
                        .setRequired(primaryKeyField, true)
                        .addPrimaryKey(primaryKeyField)
                }
                val sampleSchema = schema.get("sample")
                json.keys().forEach { key ->
                    if (!sampleSchema!!.hasField(key)) {
                        when (json.get(key)) {
                            is Int -> sampleSchema.addField(key, Int::class.java)
                            is Long -> sampleSchema.addField(key, Long::class.java)
                            is Float -> sampleSchema.addField(key, Float::class.java)
                            is Double -> sampleSchema.addField(key, Double::class.java)
                            is Boolean -> sampleSchema.addField(key, Boolean::class.java)
                            is String -> sampleSchema.addField(key, String::class.java)
                            // Add other types as needed
                        }
                    }
                }
                Log.d("TAG", "saveJsonToRealm: ${sampleSchema?.className}")

                // Create and populate the DynamicRealmObject
                val sample = transactionRealm.createObject(sampleSchema?.className, json.getString(primaryKeyField))
                json.remove("id")
                json.keys().forEach { key ->
                    when (val value = json.get(key)) {
                        is Int -> sample.setInt(key, value)
                        is Long -> sample.setLong(key, value)
                        is Float -> sample.setFloat(key, value)
                        is Double -> sample.setDouble(key, value)
                        is Boolean -> sample.setBoolean(key, value)
                        is String -> sample.setString(key, value)
                        // Handle other types if needed
                    }
                }
            }
        } finally {
            realm.close()
        }
    }

    fun testSaveJsonToRealm(onResult: (String) -> Unit) {
        // Sample JSON string
        val jsonString = """
            {
                "id": "3",
                "name": "John Doe",
                "age": 30,
                "isActive": true
            }
        """.trimIndent()
        saveJsonToRealm(jsonString, "id")

        // Query Realm to check if the object is saved
        val realm = Realm.getDefaultInstance()
        try {
            val savedObject = DynamicRealm.getInstance(realm.configuration).where("sample")
                .equalTo("id", "1")
                .findFirst()

            onResult("Saved Object: ${savedObject?.toString()}")
        } finally {
            realm.close()
        }
    }
}