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Introduce isLambdaClass() as a public utility in ClassUtils

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This commit extracts isLambda() from AopProxyUtils and makes it
publicly available as ClassUtils.isLambdaClass().

This is a prerequisite for gh-28209.
This commit is contained in:
Sam Brannen
2022-04-09 09:35:51 +02:00
parent 35de7e19ee
commit 5f6d8df34b
5 changed files with 76 additions and 75 deletions
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16
spring-aop/src/main/java/org/springframework/aop/framework/AopProxyUtils.java
View File

@@ -134,7 +134,7 @@ public abstract class AopProxyUtils {
if (targetClass.isInterface()) {
advised.setInterfaces(targetClass);
}
else if (Proxy.isProxyClass(targetClass) || isLambda(targetClass)) {
else if (Proxy.isProxyClass(targetClass) || ClassUtils.isLambdaClass(targetClass)) {
advised.setInterfaces(targetClass.getInterfaces());
}
specifiedInterfaces = advised.getProxiedInterfaces();
@@ -245,18 +245,4 @@ public abstract class AopProxyUtils {
return arguments;
}
/**
* Determine if the supplied {@link Class} is a JVM-generated implementation
* class for a lambda expression or method reference.
* <p>This method makes a best-effort attempt at determining this, based on
* checks that work on modern, main stream JVMs.
* @param clazz the class to check
* @return {@code true} if the class is a lambda implementation class
* @since 5.3.16
*/
static boolean isLambda(Class<?> clazz) {
return (clazz.isSynthetic() && (clazz.getSuperclass() == Object.class) &&
(clazz.getInterfaces().length > 0) && clazz.getName().contains("$$Lambda"));
}
}

3
spring-aop/src/main/java/org/springframework/aop/framework/DefaultAopProxyFactory.java
View File

@@ -21,6 +21,7 @@ import java.lang.reflect.Proxy;
import org.springframework.aop.SpringProxy;
import org.springframework.core.NativeDetector;
import org.springframework.util.ClassUtils;
/**
* Default {@link AopProxyFactory} implementation, creating either a CGLIB proxy
@@ -60,7 +61,7 @@ public class DefaultAopProxyFactory implements AopProxyFactory, Serializable {
throw new AopConfigException("TargetSource cannot determine target class: " +
"Either an interface or a target is required for proxy creation.");
}
if (targetClass.isInterface() || Proxy.isProxyClass(targetClass) || AopProxyUtils.isLambda(targetClass)) {
if (targetClass.isInterface() || Proxy.isProxyClass(targetClass) || ClassUtils.isLambdaClass(targetClass)) {
return new JdkDynamicAopProxy(config);
}
return new ObjenesisCglibAopProxy(config);