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/*
* Copyright (c) 2017, 2023, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* The Universal Permissive License (UPL), Version 1.0
*
* Subject to the condition set forth below, permission is hereby granted to any
* person obtaining a copy of this software, associated documentation and/or
* data (collectively the "Software"), free of charge and under any and all
* copyright rights in the Software, and any and all patent rights owned or
* freely licensable by each licensor hereunder covering either (i) the
* unmodified Software as contributed to or provided by such licensor, or (ii)
* the Larger Works (as defined below), to deal in both
*
* (a) the Software, and
*
* (b) any piece of software and/or hardware listed in the lrgrwrks.txt file if
* one is included with the Software each a "Larger Work" to which the Software
* is contributed by such licensors),
*
* without restriction, including without limitation the rights to copy, create
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* Software and the Larger Work(s), and to sublicense the foregoing rights on
* either these or other terms.
*
* This license is subject to the following condition:
*
* The above copyright notice and either this complete permission notice or at a
* minimum a reference to the UPL must be included in all copies or substantial
* portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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package org.graalvm.nativeimage.hosted;
import java.lang.reflect.Constructor;
import java.lang.reflect.Executable;
import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
import org.graalvm.nativeimage.ImageSingletons;
import org.graalvm.nativeimage.Platform;
import org.graalvm.nativeimage.Platforms;
import org.graalvm.nativeimage.impl.ConfigurationCondition;
import org.graalvm.nativeimage.impl.RuntimeReflectionSupport;
//Checkstyle: allow reflection
/**
* This class provides methods that can be called during native image generation to register
* classes, methods, and fields for reflection at run time.
*
* @since 19.0
*/
@Platforms(Platform.HOSTED_ONLY.class)
public final class RuntimeReflection {
/**
* Makes the provided classes available for reflection at run time. A call to
* {@link Class#forName} for the names of the classes will return the classes at run time.
*
* @since 19.0
*/
public static void register(Class... classes) {
ImageSingletons.lookup(RuntimeReflectionSupport.class).register(ConfigurationCondition.alwaysTrue(), classes);
}
/**
* Makes the provided class available for reflection at run time. A call to
* {@link Class#forName} for the name of the class will return the class (if it exists) or a
* {@link ClassNotFoundException} at run time.
*
* @since 23.0
*/
public static void registerClassLookup(String className) {
ImageSingletons.lookup(RuntimeReflectionSupport.class).registerClassLookup(ConfigurationCondition.alwaysTrue(), className);
}
/**
* Makes the provided methods available for reflection at run time. The methods will be returned
* by {@link Class#getMethod}, {@link Class#getDeclaredMethod(String, Class[])}, and all the
* other methods on {@link Class} that return a single method.
*
* @since 19.0
*/
public static void register(Executable... methods) {
ImageSingletons.lookup(RuntimeReflectionSupport.class).register(ConfigurationCondition.alwaysTrue(), false, methods);
}
/**
* Makes the provided methods available for reflection queries at run time. The methods will be
* returned by {@link Class#getMethod}, {@link Class#getDeclaredMethod(String, Class[])}, and
* all the other methods on {@link Class} that return a single method, but will not be invocable
* and will not be considered reachable.
*
* @since 21.3
*/
public static void registerAsQueried(Executable... methods) {
ImageSingletons.lookup(RuntimeReflectionSupport.class).register(ConfigurationCondition.alwaysTrue(), true, methods);
}
/**
* Makes the provided method available for reflection queries at run time. The method will be
* returned by {@link Class#getMethod}, {@link Class#getDeclaredMethod(String, Class[])}, and
* all the other methods on {@link Class} that return a single method, but will not be invocable
* and will not be considered reachable. If the method doesn't exist a
* {@link NoSuchMethodException} will be thrown when calling these methods at run-time.
*
* @since 23.0
*/
public static void registerMethodLookup(Class declaringClass, String methodName, Class... parameterTypes) {
ImageSingletons.lookup(RuntimeReflectionSupport.class).registerMethodLookup(ConfigurationCondition.alwaysTrue(), declaringClass, methodName, parameterTypes);
}
/**
* Makes the provided constructor available for reflection queries at run time. The constructor
* will be returned by {@link Class#getConstructor},
* {@link Class#getDeclaredConstructor(Class[])}, and all the other methods on {@link Class}
* that return a single constructor, but will not be invocable and will not be considered
* reachable. If the constructor doesn't exist a {@link NoSuchMethodException} will be thrown
* when calling these methods at run-time.
*
* @since 23.0
*/
public static void registerConstructorLookup(Class declaringClass, Class... parameterTypes) {
ImageSingletons.lookup(RuntimeReflectionSupport.class).registerConstructorLookup(ConfigurationCondition.alwaysTrue(), declaringClass, parameterTypes);
}
/**
* Makes the provided fields available for reflection at run time. The fields will be returned
* by {@link Class#getField}, {@link Class#getDeclaredField(String)},and all the other methods
* on {@link Class} that return a single field.
*
* @since 19.0
*/
public static void register(Field... fields) {
ImageSingletons.lookup(RuntimeReflectionSupport.class).register(ConfigurationCondition.alwaysTrue(), false, fields);
}
/**
* Makes the provided field available for reflection at run time. The field will be returned by
* {@link Class#getField}, {@link Class#getDeclaredField(String)}, and all the other methods on
* {@link Class} that return a single field. If the field doesn't exist a
* {@link NoSuchFieldException} will be thrown when calling these methods at run-time.
*
* @since 19.0
*/
public static void registerFieldLookup(Class declaringClass, String fieldName) {
ImageSingletons.lookup(RuntimeReflectionSupport.class).registerFieldLookup(ConfigurationCondition.alwaysTrue(), declaringClass, fieldName);
}
/**
* Allows calling {@link Class#getClasses()} on the provided class at run time.
*
* @since 23.0
*/
public static void registerAllClasses(Class declaringClass) {
ImageSingletons.lookup(RuntimeReflectionSupport.class).registerAllClassesQuery(ConfigurationCondition.alwaysTrue(), declaringClass);
}
/**
* Allows calling {@link Class#getDeclaredClasses()} on the provided class at run time.
*
* @since 23.0
*/
public static void registerAllDeclaredClasses(Class declaringClass) {
ImageSingletons.lookup(RuntimeReflectionSupport.class).registerAllDeclaredClassesQuery(ConfigurationCondition.alwaysTrue(), declaringClass);
}
/**
* Allows calling {@link Class#getMethods()} on the provided class at run time. The methods will
* also be registered for individual queries.
*
* @since 23.0
*/
public static void registerAllMethods(Class declaringClass) {
ImageSingletons.lookup(RuntimeReflectionSupport.class).registerAllMethodsQuery(ConfigurationCondition.alwaysTrue(), true, declaringClass);
}
/**
* Allows calling {@link Class#getDeclaredMethods()} on the provided class at run time. The
* methods will also be registered for individual queries.
*
* @since 23.0
*/
public static void registerAllDeclaredMethods(Class declaringClass) {
ImageSingletons.lookup(RuntimeReflectionSupport.class).registerAllDeclaredMethodsQuery(ConfigurationCondition.alwaysTrue(), true, declaringClass);
}
/**
* Allows calling {@link Class#getConstructors()} on the provided class at run time. The
* constructors will also be registered for individual queries.
*
* @since 23.0
*/
public static void registerAllConstructors(Class declaringClass) {
ImageSingletons.lookup(RuntimeReflectionSupport.class).registerAllConstructorsQuery(ConfigurationCondition.alwaysTrue(), true, declaringClass);
}
/**
* Allows calling {@link Class#getDeclaredConstructors()} on the provided class at run time. The
* constructors will also be registered for individual queries.
*
* @since 23.0
*/
public static void registerAllDeclaredConstructors(Class declaringClass) {
ImageSingletons.lookup(RuntimeReflectionSupport.class).registerAllDeclaredConstructorsQuery(ConfigurationCondition.alwaysTrue(), true, declaringClass);
}
/**
* Allows calling {@link Class#getFields()} on the provided class at run time. The fields will
* also be registered for individual queries.
*
* @since 23.0
*/
public static void registerAllFields(Class declaringClass) {
ImageSingletons.lookup(RuntimeReflectionSupport.class).registerAllFieldsQuery(ConfigurationCondition.alwaysTrue(), declaringClass);
}
/**
* Allows calling {@link Class#getDeclaredFields()} on the provided class at run time. The
* fields will also be registered for individual queries.
*
* @since 23.0
*/
public static void registerAllDeclaredFields(Class declaringClass) {
ImageSingletons.lookup(RuntimeReflectionSupport.class).registerAllDeclaredFieldsQuery(ConfigurationCondition.alwaysTrue(), declaringClass);
}
/**
* Allows calling {@link Class#getNestMembers()} on the provided class at run time.
*
* @since 23.0
*/
public static void registerAllNestMembers(Class declaringClass) {
ImageSingletons.lookup(RuntimeReflectionSupport.class).registerAllNestMembersQuery(ConfigurationCondition.alwaysTrue(), declaringClass);
}
/**
* Allows calling {@link Class#getPermittedSubclasses()} on the provided class at run time.
*
* @since 23.0
*/
public static void registerAllPermittedSubclasses(Class declaringClass) {
ImageSingletons.lookup(RuntimeReflectionSupport.class).registerAllPermittedSubclassesQuery(ConfigurationCondition.alwaysTrue(), declaringClass);
}
/**
* Allows calling {@link Class#getRecordComponents()} on the provided class at run time.
*
* @since 23.0
*/
public static void registerAllRecordComponents(Class declaringClass) {
ImageSingletons.lookup(RuntimeReflectionSupport.class).registerAllRecordComponentsQuery(ConfigurationCondition.alwaysTrue(), declaringClass);
}
/**
* Allows calling {@link Class#getSigners()} on the provided class at run time.
*
* @since 23.0
*/
public static void registerAllSigners(Class declaringClass) {
ImageSingletons.lookup(RuntimeReflectionSupport.class).registerAllSignersQuery(ConfigurationCondition.alwaysTrue(), declaringClass);
}
/**
* @deprecated Use {@link #register(Field...)} instead. Parameter {@code finalIsWritable} no
* longer serves a purpose.
* @since 19.0
*/
@SuppressWarnings("unused")
@Deprecated(since = "21.1")
public static void register(boolean finalIsWritable, Field... fields) {
register(fields);
}
/**
* @deprecated Use {@link #register(Field...)} instead. Parameters {@code finalIsWritable} and
* {@code allowUnsafeAccess} no longer serve a purpose.
* @since 21.0
*/
@SuppressWarnings("unused")
@Deprecated(since = "21.1")
public static void register(boolean finalIsWritable, boolean allowUnsafeAccess, Field... fields) {
register(fields);
}
/**
* Makes the provided classes available for reflective instantiation by
* {@link Class#newInstance}. This is equivalent to registering the nullary constructors of the
* classes.
*
* @since 19.0
*/
public static void registerForReflectiveInstantiation(Class... classes) {
for (Class clazz : classes) {
if (clazz.isArray() || clazz.isInterface() || Modifier.isAbstract(clazz.getModifiers())) {
throw new IllegalArgumentException("Class " + clazz.getTypeName() + " cannot be instantiated reflectively. It must be a non-abstract instance type.");
}
Constructor nullaryConstructor;
try {
nullaryConstructor = clazz.getDeclaredConstructor();
} catch (NoSuchMethodException ex) {
throw new IllegalArgumentException("Class " + clazz.getTypeName() + " cannot be instantiated reflectively . It does not have a nullary constructor.");
}
register(nullaryConstructor);
}
}
private RuntimeReflection() {
}
}
