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Fory Creation

This page covers Kotlin-specific requirements for creating Fory instances.

Basic Setup​

When using Fory for Kotlin serialization, register Kotlin serializers via KotlinSerializers.registerSerializers(fory):

import org.apache.fory.Fory
import org.apache.fory.serializer.kotlin.KotlinSerializers

val fory = Fory.builder()
    .requireClassRegistration(true)
    .build()

// Register Kotlin serializers
KotlinSerializers.registerSerializers(fory)

Thread Safety​

Fory instance creation is not cheap. Instances should be shared between multiple serializations.

Single-Thread Usage​

import org.apache.fory.Fory
import org.apache.fory.serializer.kotlin.KotlinSerializers

object ForyHolder {
    val fory: Fory = Fory.builder()
        .requireClassRegistration(true)
        .build().also {
            KotlinSerializers.registerSerializers(it)
        }
}

Multi-Thread Usage​

For multi-threaded applications, use ThreadSafeFory:

import org.apache.fory.Fory
import org.apache.fory.ThreadSafeFory
import org.apache.fory.ThreadLocalFory
import org.apache.fory.serializer.kotlin.KotlinSerializers

object ForyHolder {
    val fory: ThreadSafeFory = ThreadLocalFory { classLoader ->
        Fory.builder()
            .withClassLoader(classLoader)
            .requireClassRegistration(true)
            .build().also {
                KotlinSerializers.registerSerializers(it)
            }
    }
}

Using Builder Methods​

// Thread-safe Fory
val fory: ThreadSafeFory = Fory.builder()
    .requireClassRegistration(true)
    .buildThreadSafeFory()

KotlinSerializers.registerSerializers(fory)

Configuration Options​

All configuration options from Fory Java are available. See Java Configuration Options for the complete list.

Common options for Kotlin:

import org.apache.fory.Fory
import org.apache.fory.config.CompatibleMode
import org.apache.fory.serializer.kotlin.KotlinSerializers

val fory = Fory.builder()
    // Enable reference tracking for circular references
    .withRefTracking(true)
    // Enable schema evolution support
    .withCompatibleMode(CompatibleMode.COMPATIBLE)
    // Enable async compilation for better startup performance
    .withAsyncCompilation(true)
    // Compression options
    .withIntCompressed(true)
    .withLongCompressed(true)
    .build()

KotlinSerializers.registerSerializers(fory)