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Restore special instance supplier generation for inner classes

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Closes gh-33683
This commit is contained in:
Juergen Hoeller
2024-10-11 16:59:15 +02:00
parent b748cb38c5
commit 7ea0ac55cd
4 changed files with 96 additions and 46 deletions
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4
spring-beans/src/main/java/org/springframework/beans/factory/aot/BeanInstanceSupplier.java
View File

@@ -276,7 +276,9 @@ public final class BeanInstanceSupplier<T> extends AutowiredElementResolver impl
ValueHolder[] argumentValues = resolveArgumentValues(registeredBean, executable);
Set<String> autowiredBeanNames = new LinkedHashSet<>(resolved.length * 2);
for (int i = 0; i < parameterCount; i++) {
int startIndex = (executable instanceof Constructor<?> constructor &&
ClassUtils.isInnerClass(constructor.getDeclaringClass())) ? 1 : 0;
for (int i = startIndex; i < parameterCount; i++) {
MethodParameter parameter = getMethodParameter(executable, i);
DependencyDescriptor descriptor = new DependencyDescriptor(parameter, true);
String shortcut = (this.shortcutBeanNames != null ? this.shortcutBeanNames[i] : null);

83
spring-beans/src/main/java/org/springframework/beans/factory/aot/InstanceSupplierCodeGenerator.java
View File

@@ -99,7 +99,7 @@ public class InstanceSupplierCodeGenerator {
/**
* Create a new instance.
* Create a new generator instance.
* @param generationContext the generation context
* @param className the class name of the bean to instantiate
* @param generatedMethods the generated methods
@@ -158,47 +158,43 @@ public class InstanceSupplierCodeGenerator {
private CodeBlock generateCodeForConstructor(RegisteredBean registeredBean, Constructor<?> constructor) {
String beanName = registeredBean.getBeanName();
Class<?> beanClass = registeredBean.getBeanClass();
Class<?> declaringClass = constructor.getDeclaringClass();
Visibility accessVisibility = getAccessVisibility(registeredBean, constructor);
if (KotlinDetector.isKotlinReflectPresent() && KotlinDelegate.hasConstructorWithOptionalParameter(beanClass)) {
return generateCodeForInaccessibleConstructor(beanName, beanClass, constructor,
return generateCodeForInaccessibleConstructor(beanName, constructor,
hints -> hints.registerType(beanClass, MemberCategory.INVOKE_DECLARED_CONSTRUCTORS));
}
else if (accessVisibility != Visibility.PRIVATE) {
return generateCodeForAccessibleConstructor(beanName, beanClass, constructor, declaringClass);
if (!isVisible(constructor, constructor.getDeclaringClass())) {
return generateCodeForInaccessibleConstructor(beanName, constructor,
hints -> hints.registerConstructor(constructor, ExecutableMode.INVOKE));
}
return generateCodeForInaccessibleConstructor(beanName, beanClass, constructor,
hints -> hints.registerConstructor(constructor, ExecutableMode.INVOKE));
return generateCodeForAccessibleConstructor(beanName, constructor);
}
private CodeBlock generateCodeForAccessibleConstructor(String beanName, Class<?> beanClass,
Constructor<?> constructor, Class<?> declaringClass) {
private CodeBlock generateCodeForAccessibleConstructor(String beanName, Constructor<?> constructor) {
this.generationContext.getRuntimeHints().reflection().registerConstructor(
constructor, ExecutableMode.INTROSPECT);
if (constructor.getParameterCount() == 0) {
if (!this.allowDirectSupplierShortcut) {
return CodeBlock.of("$T.using($T::new)", InstanceSupplier.class, declaringClass);
return CodeBlock.of("$T.using($T::new)", InstanceSupplier.class, constructor.getDeclaringClass());
}
if (!isThrowingCheckedException(constructor)) {
return CodeBlock.of("$T::new", declaringClass);
return CodeBlock.of("$T::new", constructor.getDeclaringClass());
}
return CodeBlock.of("$T.of($T::new)", ThrowingSupplier.class, declaringClass);
return CodeBlock.of("$T.of($T::new)", ThrowingSupplier.class, constructor.getDeclaringClass());
}
GeneratedMethod generatedMethod = generateGetInstanceSupplierMethod(method ->
buildGetInstanceMethodForConstructor(
method, beanName, beanClass, constructor, declaringClass, PRIVATE_STATIC));
buildGetInstanceMethodForConstructor(method, beanName, constructor, PRIVATE_STATIC));
return generateReturnStatement(generatedMethod);
}
private CodeBlock generateCodeForInaccessibleConstructor(String beanName, Class<?> beanClass,
private CodeBlock generateCodeForInaccessibleConstructor(String beanName,
Constructor<?> constructor, Consumer<ReflectionHints> hints) {
CodeWarnings codeWarnings = new CodeWarnings();
codeWarnings.detectDeprecation(beanClass, constructor)
codeWarnings.detectDeprecation(constructor.getDeclaringClass(), constructor)
.detectDeprecation(Arrays.stream(constructor.getParameters()).map(Parameter::getType));
hints.accept(this.generationContext.getRuntimeHints().reflection());
@@ -206,32 +202,34 @@ public class InstanceSupplierCodeGenerator {
method.addJavadoc("Get the bean instance supplier for '$L'.", beanName);
method.addModifiers(PRIVATE_STATIC);
codeWarnings.suppress(method);
method.returns(ParameterizedTypeName.get(BeanInstanceSupplier.class, beanClass));
method.addStatement(generateResolverForConstructor(beanClass, constructor));
method.returns(ParameterizedTypeName.get(BeanInstanceSupplier.class, constructor.getDeclaringClass()));
method.addStatement(generateResolverForConstructor(constructor));
});
return generateReturnStatement(generatedMethod);
}
private void buildGetInstanceMethodForConstructor(MethodSpec.Builder method,
String beanName, Class<?> beanClass, Constructor<?> constructor, Class<?> declaringClass,
javax.lang.model.element.Modifier... modifiers) {
private void buildGetInstanceMethodForConstructor(MethodSpec.Builder method, String beanName,
Constructor<?> constructor, javax.lang.model.element.Modifier... modifiers) {
Class<?> declaringClass = constructor.getDeclaringClass();
CodeWarnings codeWarnings = new CodeWarnings();
codeWarnings.detectDeprecation(beanClass, constructor, declaringClass)
codeWarnings.detectDeprecation(declaringClass, constructor)
.detectDeprecation(Arrays.stream(constructor.getParameters()).map(Parameter::getType));
method.addJavadoc("Get the bean instance supplier for '$L'.", beanName);
method.addModifiers(modifiers);
codeWarnings.suppress(method);
method.returns(ParameterizedTypeName.get(BeanInstanceSupplier.class, beanClass));
method.returns(ParameterizedTypeName.get(BeanInstanceSupplier.class, declaringClass));
CodeBlock.Builder code = CodeBlock.builder();
code.add(generateResolverForConstructor(beanClass, constructor));
code.add(generateResolverForConstructor(constructor));
boolean hasArguments = constructor.getParameterCount() > 0;
boolean onInnerClass = ClassUtils.isInnerClass(declaringClass);
CodeBlock arguments = hasArguments ?
new AutowiredArgumentsCodeGenerator(declaringClass, constructor)
.generateCode(constructor.getParameterTypes())
.generateCode(constructor.getParameterTypes(), (onInnerClass ? 1 : 0))
: NO_ARGS;
CodeBlock newInstance = generateNewInstanceCodeForConstructor(declaringClass, arguments);
@@ -239,24 +237,29 @@ public class InstanceSupplierCodeGenerator {
method.addStatement(code.build());
}
private CodeBlock generateResolverForConstructor(Class<?> beanClass, Constructor<?> constructor) {
private CodeBlock generateResolverForConstructor(Constructor<?> constructor) {
CodeBlock parameterTypes = generateParameterTypesCode(constructor.getParameterTypes());
return CodeBlock.of("return $T.<$T>forConstructor($L)", BeanInstanceSupplier.class, beanClass, parameterTypes);
return CodeBlock.of("return $T.<$T>forConstructor($L)", BeanInstanceSupplier.class,
constructor.getDeclaringClass(), parameterTypes);
}
private CodeBlock generateNewInstanceCodeForConstructor(Class<?> declaringClass, CodeBlock args) {
if (ClassUtils.isInnerClass(declaringClass)) {
return CodeBlock.of("$L.getBeanFactory().getBean($T.class).new $L($L)",
REGISTERED_BEAN_PARAMETER_NAME, declaringClass.getEnclosingClass(),
declaringClass.getSimpleName(), args);
}
return CodeBlock.of("new $T($L)", declaringClass, args);
}
private CodeBlock generateCodeForFactoryMethod(
RegisteredBean registeredBean, Method factoryMethod, Class<?> targetClass) {
Visibility accessVisibility = getAccessVisibility(registeredBean, factoryMethod);
if (accessVisibility != Visibility.PRIVATE) {
return generateCodeForAccessibleFactoryMethod(registeredBean.getBeanName(), factoryMethod, targetClass,
registeredBean.getMergedBeanDefinition().getFactoryBeanName());
if (!isVisible(factoryMethod, targetClass)) {
return generateCodeForInaccessibleFactoryMethod(registeredBean.getBeanName(), factoryMethod, targetClass);
}
return generateCodeForInaccessibleFactoryMethod(registeredBean.getBeanName(), factoryMethod, targetClass);
return generateCodeForAccessibleFactoryMethod(registeredBean.getBeanName(), factoryMethod, targetClass,
registeredBean.getMergedBeanDefinition().getFactoryBeanName());
}
private CodeBlock generateCodeForAccessibleFactoryMethod(String beanName,
@@ -366,11 +369,13 @@ public class InstanceSupplierCodeGenerator {
return code.build();
}
private Visibility getAccessVisibility(RegisteredBean registeredBean, Member member) {
AccessControl beanTypeAccessControl = AccessControl.forResolvableType(registeredBean.getBeanType());
private boolean isVisible(Member member, Class<?> targetClass) {
AccessControl classAccessControl = AccessControl.forClass(targetClass);
AccessControl memberAccessControl = AccessControl.forMember(member);
return AccessControl.lowest(beanTypeAccessControl, memberAccessControl).getVisibility();
}
Visibility visibility = AccessControl.lowest(classAccessControl, memberAccessControl).getVisibility();
return (visibility == Visibility.PUBLIC || (visibility != Visibility.PRIVATE &&
member.getDeclaringClass().getPackageName().equals(this.className.packageName())));
}
private CodeBlock generateParameterTypesCode(Class<?>[] parameterTypes) {
CodeBlock.Builder code = CodeBlock.builder();
@@ -392,6 +397,7 @@ public class InstanceSupplierCodeGenerator {
.anyMatch(Exception.class::isAssignableFrom);
}
/**
* Inner class to avoid a hard dependency on Kotlin at runtime.
*/
@@ -410,7 +416,6 @@ public class InstanceSupplierCodeGenerator {
}
return false;
}
}