Spring/spring-framework
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Apply "instanceof pattern matching" in additional locations

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Closes gh-27696
This commit is contained in:
liuzhifei
2021-11-18 20:13:13 +08:00
committed by Sam Brannen
parent 6555d3b42d
commit 7021eb5bb1
3 changed files with 6 additions and 10 deletions
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8
spring-core/src/main/java/org/springframework/core/Conventions.java
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@@ -1,5 +1,5 @@
/*
* Copyright 2002-2020 the original author or authors.
* Copyright 2002-2021 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.
@@ -70,8 +70,7 @@ public final class Conventions {
valueClass = value.getClass().getComponentType();
pluralize = true;
}
else if (value instanceof Collection) {
Collection<?> collection = (Collection<?>) value;
else if (value instanceof Collection<?> collection) {
if (collection.isEmpty()) {
throw new IllegalArgumentException(
"Cannot generate variable name for an empty Collection");
@@ -188,11 +187,10 @@ public final class Conventions {
else if (Collection.class.isAssignableFrom(resolvedType)) {
valueClass = ResolvableType.forMethodReturnType(method).asCollection().resolveGeneric();
if (valueClass == null) {
if (!(value instanceof Collection)) {
if (!(value instanceof Collection<?> collection)) {
throw new IllegalArgumentException("Cannot generate variable name " +
"for non-typed Collection return type and a non-Collection value");
}
Collection<?> collection = (Collection<?>) value;
if (collection.isEmpty()) {
throw new IllegalArgumentException("Cannot generate variable name " +
"for non-typed Collection return type and an empty Collection value");