Ignore getters for Kotlin types deviating from Java Beans spec.

We now ignore Kotlin getters that are either static methods or would require additional arguments.

Closes #3109

Author: mp911de

src/main/java/org/springframework/data/util/KotlinBeanInfoFactory.java

@@ -28,6 +28,7 @@
 import java.beans.PropertyDescriptor;
 import java.beans.SimpleBeanInfo;
 import java.lang.reflect.Method;
+import java.lang.reflect.Modifier;
 import java.util.Arrays;
 import java.util.Collection;
 import java.util.LinkedHashSet;
@@ -70,6 +71,10 @@ public BeanInfo getBeanInfo(Class<?> beanClass) throws IntrospectionException {
 				Method getter = ReflectJvmMapping.getJavaGetter(property);
 				Method setter = property instanceof KMutableProperty<?> kmp ? ReflectJvmMapping.getJavaSetter(kmp) : null;
 
+				if (getter != null && (Modifier.isStatic(getter.getModifiers()) || getter.getParameterCount() != 0)) {
+					continue;
+				}
+
 				if (getter != null && setter != null && setter.getParameterCount() == 1) {
 					if (!getter.getReturnType().equals(setter.getParameters()[0].getType())) {
 						// filter asymmetric getters/setters from being considered a Java Beans property

src/test/kotlin/org/springframework/data/util/InlineClassWithProperty.kt

@@ -0,0 +1,21 @@
+/*
+ * Copyright 2024 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.data.util
+
+@JvmInline
+value class InlineClassWithProperty(val value: String) {
+	val foo: String get() = "foo-$value"
+}

src/test/kotlin/org/springframework/data/util/KotlinBeanInfoFactoryUnitTests.kt

@@ -48,6 +48,14 @@ class KotlinBeanInfoFactoryUnitTests {
 		}
 	}
 
+	@Test // GH-3109
+	internal fun considersJavaBeansGettersOnly() {
+
+		val pds = BeanUtils.getPropertyDescriptors(InlineClassWithProperty::class.java)
+
+		assertThat(pds).hasSize(1).extracting("name").contains("value")
+	}
+
 	@Test
 	internal fun determinesInlineClassConsumerProperties() {