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Revised handling of missing data class arguments

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Includes unified detection of Kotlin's optional parameters in MethodParameter.isOptional(), reduces BeanUtils.findPrimaryConstructor to Kotlin semantics (for reuse in AutowiredAnnotationBeanPostProcessor), and finally introduces a common KotlinDetector delegate with an isKotlinType(Class) check.

Issue: SPR-15877
Issue: SPR-16020
This commit is contained in:
Juergen Hoeller
2017-09-28 00:31:12 +02:00
parent d3129a8bd7
commit ec345bf162
14 changed files with 204 additions and 344 deletions
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20
spring-beans/src/test/java/org/springframework/beans/BeanUtilsTests.java
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@@ -1,5 +1,5 @@
/*
* Copyright 2002-2013 the original author or authors.
* Copyright 2002-2017 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.
@@ -18,7 +18,6 @@ package org.springframework.beans;
import java.beans.Introspector;
import java.beans.PropertyDescriptor;
import java.lang.reflect.Constructor;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.List;
@@ -275,23 +274,6 @@ public class BeanUtilsTests {
}
}
}
@Test
public void testFindDefaultConstructorAndInstantiate() {
Constructor<Bean> ctor = BeanUtils.findPrimaryConstructor(Bean.class);
assertNotNull(ctor);
Bean bean = BeanUtils.instantiateClass(ctor);
assertNotNull(bean);
}
@Test
public void testFindSingleNonDefaultConstructorAndInstantiate() {
Constructor<BeanWithSingleNonDefaultConstructor> ctor = BeanUtils.findPrimaryConstructor(BeanWithSingleNonDefaultConstructor.class);
assertNotNull(ctor);
BeanWithSingleNonDefaultConstructor bean = BeanUtils.instantiateClass(ctor, "foo");
assertNotNull(bean);
assertEquals("foo", bean.getName());
}
private void assertSignatureEquals(Method desiredMethod, String signature) {
assertEquals(desiredMethod, BeanUtils.resolveSignature(signature, MethodSignatureBean.class));