Performance dramatically slow

Hi there,

I try to use the Klaxon parser together with android room.

So I have this example model:

@Entity
data class User(
        @PrimaryKey
        @Json(name = "user_id")
        var userID: String,

        @Json(name = "salutation")
        var salutation: String? = null,

        @Json(name = "company")
        var company: String? = null,

        @Json(name = "firstname")
        var firstName: String? = null,

        @Json(name = "lastname")
        var lastName: String? = null,

        @Json(name = "zip")
        var zip: String? = null
)

And want to parse it from this json string: {"firstname" : "George", "lastname" : "Clooney", "salutation" : "Herr", "user_id" : "530930", "zip" : "80335"}

And this is the code which should do all the magic:

fun getUser(): User {
        val userJson = pref!!.getString(KEY_USER, "") // the preferences stores the json string from above
        return Klaxon().parse<User>(userJson)!! // this method takes 8 seconds in debug mode!
    }

According to the Android Studio Profiler the slow method is “findJsonPaths” called in Klaxon.kt

I do have the same performance problems at any part where I’m using the klaxon parser. Any ideas for issue?

Thanks for help.

[cbeust]

No, I think it’s a genuine issue. Will take a look.

[darkwood-studios]

I tried it with moshi parser and got a mush better result with this code

fun getUser(): User {
        val userJson = pref!!.getString(KEY_USER, "") // the preferences stores the json string from above
        val moshi = Moshi.Builder().build()
        val userAdapter = moshi.adapter(User::class.java)
        return userAdapter.fromJsonValue(userJson)!! // this method takes only some milli seconds!
}

Any idea why Klaxon is so much slower? Maybe I missed some configuration etc.