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org.jboss.as.weld.discovery.WeldClassFileInfo Maven / Gradle / Ivy
/*
* Copyright The WildFly Authors
* SPDX-License-Identifier: Apache-2.0
*/
package org.jboss.as.weld.discovery;
import org.jboss.as.server.deployment.annotation.CompositeIndex;
import org.jboss.as.weld.logging.WeldLogger;
import org.jboss.as.weld.util.Reflections;
import org.jboss.jandex.AnnotationInstance;
import org.jboss.jandex.AnnotationTarget;
import org.jboss.jandex.ClassInfo;
import org.jboss.jandex.DotName;
import org.jboss.jandex.MethodInfo;
import org.jboss.weld.resources.spi.ClassFileInfo;
import org.jboss.weld.util.cache.ComputingCache;
import jakarta.enterprise.inject.Vetoed;
import jakarta.inject.Inject;
import java.lang.annotation.Annotation;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.util.List;
import java.util.Set;
/**
*
* @author Martin Kouba
*/
public class WeldClassFileInfo implements ClassFileInfo {
private static final DotName DOT_NAME_INJECT = DotName.createSimple(Inject.class.getName());
private static final DotName DOT_NAME_VETOED = DotName.createSimple(Vetoed.class.getName());
private static final DotName OBJECT_NAME = DotName.createSimple(Object.class.getName());
private static final String CONSTRUCTOR_METHOD_NAME = "";
private static final String PACKAGE_INFO_NAME = "package-info";
private final ClassInfo classInfo;
private final CompositeIndex index;
private final boolean isVetoed;
private final boolean hasCdiConstructor;
private final ComputingCache> annotationClassAnnotationsCache;
private final ClassLoader classLoader;
/**
*
* @param className
* @param index
* @param annotationClassAnnotationsCache
*/
public WeldClassFileInfo(String className, CompositeIndex index, ComputingCache> annotationClassAnnotationsCache, ClassLoader classLoader) {
this.index = index;
this.annotationClassAnnotationsCache = annotationClassAnnotationsCache;
this.classInfo = index.getClassByName(DotName.createSimple(className));
if (this.classInfo == null) {
throw WeldLogger.ROOT_LOGGER.nameNotFoundInIndex(className);
}
this.isVetoed = isVetoedTypeOrPackage();
this.hasCdiConstructor = this.classInfo.hasNoArgsConstructor() || hasInjectConstructor();
this.classLoader = classLoader;
}
@Override
public String getClassName() {
return classInfo.name().toString();
}
@Override
public boolean isAnnotationDeclared(Class annotation) {
return isAnnotationDeclared(classInfo, annotation);
}
@Override
public boolean containsAnnotation(Class annotation) {
return containsAnnotation(classInfo, DotName.createSimple(annotation.getName()), annotation);
}
@Override
public int getModifiers() {
return classInfo.flags();
}
@Override
public boolean hasCdiConstructor() {
return hasCdiConstructor;
}
@Override
public boolean isAssignableFrom(Class fromClass) {
return isAssignableFrom(getClassName(), fromClass);
}
@Override
public boolean isAssignableTo(Class toClass) {
return isAssignableTo(classInfo.name(), toClass);
}
@Override
public boolean isVetoed() {
return isVetoed;
}
@Override
public ClassFileInfo.NestingType getNestingType() {
NestingType result = null;
switch (classInfo.nestingType()) {
case ANONYMOUS:
result = NestingType.NESTED_ANONYMOUS;
break;
case TOP_LEVEL:
result = NestingType.TOP_LEVEL;
break;
case LOCAL:
result = NestingType.NESTED_LOCAL;
break;
case INNER:
if (Modifier.isStatic(classInfo.flags())) {
result = NestingType.NESTED_STATIC;
} else {
result = NestingType.NESTED_INNER;
}
break;
default:
// should never happer
break;
}
return result;
}
@Override
public String getSuperclassName() {
return classInfo.superName().toString();
}
private boolean isVetoedTypeOrPackage() {
if (isAnnotationDeclared(classInfo, DOT_NAME_VETOED)) {
return true;
}
final DotName packageInfoName = DotName.createComponentized(getPackageName(classInfo.name()), PACKAGE_INFO_NAME);
ClassInfo packageInfo = index.getClassByName(packageInfoName);
if (packageInfo != null && isAnnotationDeclared(packageInfo, DOT_NAME_VETOED)) {
return true;
}
return false;
}
private boolean isAnnotationDeclared(ClassInfo classInfo, Class annotation) {
return isAnnotationDeclared(classInfo, DotName.createSimple(annotation.getName()));
}
private boolean isAnnotationDeclared(ClassInfo classInfo, DotName requiredAnnotationName) {
List annotations = classInfo.annotationsMap().get(requiredAnnotationName);
if (annotations != null) {
for (AnnotationInstance annotationInstance : annotations) {
if (annotationInstance.target().equals(classInfo)) {
return true;
}
}
}
return false;
}
private boolean hasInjectConstructor() {
List annotationInstances = classInfo.annotationsMap().get(DOT_NAME_INJECT);
if (annotationInstances != null) {
for (AnnotationInstance instance : annotationInstances) {
AnnotationTarget target = instance.target();
if (target instanceof MethodInfo) {
MethodInfo methodInfo = (MethodInfo) target;
if (methodInfo.name().equals(CONSTRUCTOR_METHOD_NAME)) {
return true;
}
}
}
}
return false;
}
private DotName getPackageName(DotName name) {
if (name.isComponentized()) {
while (name.isInner()) {
name = name.prefix();
if (name == null) {
throw WeldLogger.DEPLOYMENT_LOGGER.couldNotDeterminePackage();
}
}
return name.prefix();
} else {
final int lastIndex = name.local().lastIndexOf(".");
if (lastIndex == -1) {
return name;
}
return DotName.createSimple(name.local().substring(0, name.local().lastIndexOf(".")));
}
}
/**
* @param className
* @param fromClass
* @return
*/
private boolean isAssignableFrom(String className, Class fromClass) {
if (className.equals(fromClass.getName())) {
return true;
}
if (Object.class.equals(fromClass)) {
return false; // there's nothing assignable from Object.class except for Object.class
}
Class superClass = fromClass.getSuperclass();
if (superClass != null && isAssignableFrom(className, superClass)) {
return true;
}
for (Class interfaceClass : fromClass.getInterfaces()) {
if (isAssignableFrom(className, interfaceClass)) {
return true;
}
}
return false;
}
/**
* @param to
* @param name
* @return true if the name is equal to the fromName, or if the name represents a superclass or superinterface of the fromName,
* false otherwise
*/
private boolean isAssignableTo(DotName name, Class to) {
if (to.getName().equals(name.toString())) {
return true;
}
if (OBJECT_NAME.equals(name)) {
return false; // there's nothing assignable from Object.class except for Object.class
}
ClassInfo fromClassInfo = index.getClassByName(name);
if (fromClassInfo == null) {
// We reached a class that is not in the index. Let's use reflection.
final Class clazz = loadClass(name.toString());
return to.isAssignableFrom(clazz);
}
DotName superName = fromClassInfo.superName();
if (superName != null && isAssignableTo(superName, to)) {
return true;
}
for (DotName interfaceName : fromClassInfo.interfaceNames()) {
if (isAssignableTo(interfaceName, to)) {
return true;
}
}
return false;
}
private boolean containsAnnotation(ClassInfo classInfo, DotName requiredAnnotationName, Class requiredAnnotation) {
// Type and members
if (classInfo.annotationsMap().containsKey(requiredAnnotationName)) {
return true;
}
// Meta-annotations
for (DotName annotation : classInfo.annotationsMap().keySet()) {
if (annotationClassAnnotationsCache.getValue(annotation).contains(requiredAnnotationName.toString())) {
return true;
}
}
// Superclass
final DotName superName = classInfo.superName();
if (superName != null && !OBJECT_NAME.equals(superName)) {
final ClassInfo superClassInfo = index.getClassByName(superName);
if (superClassInfo == null) {
// we are accessing a class that is outside of the jandex index
// fallback to using reflection
return Reflections.containsAnnotation(loadClass(superName.toString()), requiredAnnotation);
}
if (containsAnnotation(superClassInfo, requiredAnnotationName, requiredAnnotation)) {
return true;
}
}
// Also check default methods on interfaces
for (DotName interfaceName : classInfo.interfaceNames()) {
final ClassInfo interfaceInfo = index.getClassByName(interfaceName);
if (interfaceInfo == null) {
// we are accessing a class that is outside of the jandex index
// fallback to using reflection
Class interfaceClass = loadClass(interfaceName.toString());
for (Method method : interfaceClass.getDeclaredMethods()) {
if (method.isDefault() && Reflections.containsAnnotations(method.getAnnotations(), requiredAnnotation)) {
return true;
}
}
continue;
}
for (MethodInfo method : interfaceInfo.methods()) {
// Default methods are public non-abstract instance methods declared in an interface
if (isNonAbstractPublicInstanceMethod(method)) {
if (method.hasAnnotation(requiredAnnotationName)) {
return true;
}
// Meta-annotations
for (AnnotationInstance annotation : method.annotations()) {
if (annotationClassAnnotationsCache.getValue(annotation.name()).contains(requiredAnnotationName.toString())) {
return true;
}
}
}
}
}
return false;
}
private boolean isNonAbstractPublicInstanceMethod(MethodInfo method) {
return (method.flags() & (Modifier.ABSTRACT | Modifier.PUBLIC | Modifier.STATIC)) == Modifier.PUBLIC;
}
private Class loadClass(String className) {
WeldLogger.DEPLOYMENT_LOGGER.tracef("Falling back to reflection for %s", className);
try {
return classLoader.loadClass(className);
} catch (ClassNotFoundException e) {
throw WeldLogger.ROOT_LOGGER.cannotLoadClass(className, e);
}
}
@Override
public String toString() {
return classInfo.toString();
}
}
