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Add Kotlin data class components support to BindingReflectionHintsRegistrar 

Closes gh-29316
This commit is contained in:
Sébastien Deleuze 2022-10-17 12:26:45 +02:00
parent 581fa1419f
commit 69cb68f7d6
2 changed files with 33 additions and 1 deletions
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21
spring-core/src/main/java/org/springframework/aot/hint/BindingReflectionHintsRegistrar.java
View File

@ -22,6 +22,8 @@ import java.lang.reflect.Type;
import java.util.LinkedHashSet;
import java.util.Set;
import kotlin.jvm.JvmClassMappingKt;
import kotlin.reflect.KClass;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
@ -101,6 +103,7 @@ public class BindingReflectionHintsRegistrar {
}
}
if (KotlinDetector.isKotlinType(clazz)) {
KotlinDelegate.registerComponentHints(hints, clazz);
registerKotlinSerializationHints(hints, clazz);
}
});
@ -148,4 +151,22 @@ public class BindingReflectionHintsRegistrar {
}
}
/**
* Inner class to avoid a hard dependency on Kotlin at runtime.
*/
private static class KotlinDelegate {
public static void registerComponentHints(ReflectionHints hints, Class<?> type) {
KClass<?> kClass = JvmClassMappingKt.getKotlinClass(type);
if (kClass.isData()) {
for (Method method : type.getMethods()) {
String methodName = method.getName();
if (methodName.startsWith("component") || methodName.equals("copy")) {
hints.registerMethod(method, ExecutableMode.INVOKE);
}
}
}
}
}
}

13
spring-core/src/test/kotlin/org/springframework/aot/hint/KotlinBindingReflectionHintsRegistrarTests.kt
View File

@ -19,6 +19,7 @@ package org.springframework.aot.hint
import org.assertj.core.api.Assertions.assertThat
import org.assertj.core.api.ThrowingConsumer
import org.junit.jupiter.api.Test
import org.springframework.aot.hint.predicate.RuntimeHintsPredicates
/**
* Tests for Kotlin support in [BindingReflectionHintsRegistrar].
@ -32,7 +33,7 @@ class KotlinBindingReflectionHintsRegistrarTests {
private val hints = RuntimeHints()
@Test
fun `Register type for Kotlinx serialization`() {
fun `Register reflection hints for Kotlinx serialization`() {
bindingRegistrar.registerReflectionHints(hints.reflection(), SampleSerializableClass::class.java)
assertThat(hints.reflection().typeHints()).satisfiesExactlyInAnyOrder(
ThrowingConsumer { typeHint: TypeHint ->
@ -59,7 +60,17 @@ class KotlinBindingReflectionHintsRegistrarTests {
})
})
}
@Test
fun `Register reflection hints for Kotlin data class`() {
bindingRegistrar.registerReflectionHints(hints.reflection(), SampleDataClass::class.java)
assertThat(RuntimeHintsPredicates.reflection().onMethod(SampleDataClass::class.java, "component1")).accepts(hints)
assertThat(RuntimeHintsPredicates.reflection().onMethod(SampleDataClass::class.java, "copy")).accepts(hints)
assertThat(RuntimeHintsPredicates.reflection().onMethod(SampleDataClass::class.java, "getName")).accepts(hints)
}
}
@kotlinx.serialization.Serializable
class SampleSerializableClass(val name: String)
data class SampleDataClass(val name: String)