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Optimize ClassUtils#getMostSpecificMethod

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This commit optimizes ClassUtils#getMostSpecificMethod which is
a method frequently invoked in typical Spring applications.

It refines ClassUtils#isOverridable by considering static and
final modifiers as non overridable and optimizes its implementation.

Closes gh-30272
This commit is contained in:
Sébastien Deleuze
2023-08-23 18:07:54 +02:00
parent 4b9f89101d
commit 8934eb8464
1 changed files with 9 additions and 2 deletions
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11
spring-core/src/main/java/org/springframework/util/ClassUtils.java
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@@ -50,6 +50,7 @@ import org.springframework.lang.Nullable;
* @author Keith Donald
* @author Rob Harrop
* @author Sam Brannen
* @author Sebastien Deleuze
* @since 1.1
* @see TypeUtils
* @see ReflectionUtils
@@ -83,6 +84,12 @@ public abstract class ClassUtils {
/** The ".class" file suffix. */
public static final String CLASS_FILE_SUFFIX = ".class";
/** Precomputed value for the combination of private, static and final modifiers. */
private static final int NON_OVERRIDABLE_MODIFIER = Modifier.PRIVATE | Modifier.STATIC | Modifier.FINAL;
/** Precomputed value for the combination of public and protected modifiers. */
private static final int OVERRIDABLE_MODIFIER = Modifier.PUBLIC | Modifier.PROTECTED;
/**
* Map with primitive wrapper type as key and corresponding primitive
@@ -1396,10 +1403,10 @@ public abstract class ClassUtils {
* @param targetClass the target class to check against
*/
private static boolean isOverridable(Method method, @Nullable Class<?> targetClass) {
if (Modifier.isPrivate(method.getModifiers())) {
if ((method.getModifiers() & NON_OVERRIDABLE_MODIFIER) != 0) {
return false;
}
if (Modifier.isPublic(method.getModifiers()) || Modifier.isProtected(method.getModifiers())) {
if ((method.getModifiers() & OVERRIDABLE_MODIFIER) != 0) {
return true;
}
return (targetClass == null ||