/*
* JBoss, Home of Professional Open Source
* Copyright 2012, Red Hat, Inc., and individual contributors
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* http://www.apache.org/licenses/LICENSE-2.0
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jboss.weld.bootstrap.events;
import java.lang.annotation.Annotation;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.util.Collection;
import java.util.Collections;
import java.util.Set;
import javax.enterprise.inject.spi.AnnotatedConstructor;
import javax.enterprise.inject.spi.AnnotatedField;
import javax.enterprise.inject.spi.AnnotatedMethod;
import javax.enterprise.inject.spi.AnnotatedParameter;
import javax.enterprise.inject.spi.AnnotatedType;
import javax.enterprise.inject.spi.Bean;
import javax.enterprise.inject.spi.ProcessAnnotatedType;
import javax.enterprise.inject.spi.ProcessSyntheticAnnotatedType;
import javax.enterprise.inject.spi.WithAnnotations;
import org.jboss.weld.annotated.slim.SlimAnnotatedType;
import org.jboss.weld.annotated.slim.backed.BackedAnnotatedType;
import org.jboss.weld.annotated.slim.unbacked.UnbackedAnnotatedType;
import org.jboss.weld.resolution.QualifierInstance;
import org.jboss.weld.resolution.Resolvable;
import org.jboss.weld.util.collections.Sets;
import org.jboss.weld.util.reflection.ParameterizedTypeImpl;
/**
* For {@link ProcessAnnotatedType} we need a special {@link Resolvable} in order to support {@link WithAnnotations} properly.
*
* @author Jozef Hartinger
*
*/
public class ProcessAnnotatedTypeEventResolvable implements Resolvable {
public static ProcessAnnotatedTypeEventResolvable of(ProcessAnnotatedTypeImpl<?> event, RequiredAnnotationDiscovery discovery) {
if (event instanceof ProcessSyntheticAnnotatedType) {
return forProcessSyntheticAnnotatedType(event.getOriginalAnnotatedType(), discovery);
} else {
return forProcessAnnotatedType(event.getOriginalAnnotatedType(), discovery);
}
}
public static ProcessAnnotatedTypeEventResolvable forProcessAnnotatedType(SlimAnnotatedType<?> annotatedType, RequiredAnnotationDiscovery discovery) {
ParameterizedType type = new ParameterizedTypeImpl(ProcessAnnotatedType.class, new Type[] { annotatedType.getJavaClass() }, null);
return new ProcessAnnotatedTypeEventResolvable(Sets.<Type> newHashSet(Object.class, type), annotatedType, discovery);
}
public static ProcessAnnotatedTypeEventResolvable forProcessSyntheticAnnotatedType(SlimAnnotatedType<?> annotatedType, RequiredAnnotationDiscovery discovery) {
ParameterizedType type1 = new ParameterizedTypeImpl(ProcessAnnotatedType.class, new Type[] { annotatedType.getJavaClass() }, null);
ParameterizedType type2 = new ParameterizedTypeImpl(ProcessSyntheticAnnotatedType.class, new Type[] { annotatedType.getJavaClass() }, null);
return new ProcessAnnotatedTypeEventResolvable(Sets.<Type> newHashSet(Object.class, type1, type2), annotatedType, discovery);
}
private static final Set<QualifierInstance> QUALIFIERS = Collections.singleton(QualifierInstance.ANY);
private final Set<Type> types;
private final SlimAnnotatedType<?> annotatedType;
private final RequiredAnnotationDiscovery discovery;
protected ProcessAnnotatedTypeEventResolvable(Set<Type> types, SlimAnnotatedType<?> annotatedType, RequiredAnnotationDiscovery discovery) {
this.types = types;
this.annotatedType = annotatedType;
this.discovery = discovery;
}
@Override
public Set<Type> getTypes() {
return types;
}
@Override
public Set<QualifierInstance> getQualifiers() {
return QUALIFIERS;
}
/**
* Returns true if and only if the underlying {@link AnnotatedType} contains any of the given annotation types.
*/
public boolean containsRequiredAnnotations(Collection<Class<? extends Annotation>> requiredAnnotations) {
if (annotatedType instanceof BackedAnnotatedType<?>) {
return containsAnnotation((BackedAnnotatedType<?>) annotatedType, requiredAnnotations);
} else if (annotatedType instanceof UnbackedAnnotatedType<?>) {
return containsAnnotation((UnbackedAnnotatedType<?>) annotatedType, requiredAnnotations);
} else {
throw new IllegalArgumentException("Unknown SlimAnnotatedType implementation: " + annotatedType.getClass().toString());
}
}
protected boolean containsAnnotation(UnbackedAnnotatedType<?> annotatedType, Collection<Class<? extends Annotation>> requiredAnnotations) {
for (final Class<? extends Annotation> requiredAnnotation : requiredAnnotations) {
if (apply(annotatedType, requiredAnnotation)) {
return true;
}
}
return false;
}
private static boolean isEqualOrAnnotated(Class<? extends Annotation> requiredAnnotation, Annotation annotation) {
return annotation.annotationType().equals(requiredAnnotation) || annotation.annotationType().isAnnotationPresent(requiredAnnotation);
}
/**
* @return true if predicate returns true for any annotation defined anywhere on the annotatedType
*/
protected boolean apply(UnbackedAnnotatedType<?> annotatedType, Class<? extends Annotation> requiredAnnotation) {
// type annotations
for (Annotation annotation : annotatedType.getAnnotations()) {
if (isEqualOrAnnotated(requiredAnnotation, annotation)) {
return true;
}
if (isEqualOrAnnotated(requiredAnnotation, annotation)) {
return true;
}
}
for (AnnotatedField<?> field : annotatedType.getFields()) {
for (Annotation annotation : field.getAnnotations()) {
if (isEqualOrAnnotated(requiredAnnotation, annotation)) {
return true;
}
}
}
for (AnnotatedConstructor<?> constructor : annotatedType.getConstructors()) {
for (Annotation annotation : constructor.getAnnotations()) {
if (isEqualOrAnnotated(requiredAnnotation, annotation)) {
return true;
}
}
for (AnnotatedParameter<?> parameter : constructor.getParameters()) {
for (Annotation annotation : parameter.getAnnotations()) {
if (isEqualOrAnnotated(requiredAnnotation, annotation)) {
return true;
}
}
}
}
for (AnnotatedMethod<?> method : annotatedType.getMethods()) {
for (Annotation annotation : method.getAnnotations()) {
if (isEqualOrAnnotated(requiredAnnotation, annotation)) {
return true;
}
}
for (AnnotatedParameter<?> parameter : method.getParameters()) {
for (Annotation annotation : parameter.getAnnotations()) {
if (isEqualOrAnnotated(requiredAnnotation, annotation)) {
return true;
}
}
}
}
return false;
}
protected boolean containsAnnotation(BackedAnnotatedType<?> annotatedType, Collection<Class<? extends Annotation>> requiredAnnotations) {
for (Class<? extends Annotation> requiredAnnotation : requiredAnnotations) {
if (discovery.containsAnnotation(annotatedType, requiredAnnotation)) {
return true;
}
}
return false;
}
@Override
public boolean isAnnotationPresent(Class<? extends Annotation> annotationType) {
return false;
}
@Override
public <A extends Annotation> A getAnnotation(Class<A> annotationType) {
return null;
}
@Override
public Class<?> getJavaClass() {
return null;
}
@Override
public Bean<?> getDeclaringBean() {
return null;
}
@Override
public boolean isDelegate() {
return false;
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((types == null) ? 0 : types.hashCode());
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj == null) {
return false;
}
if (!(obj instanceof ProcessAnnotatedTypeEventResolvable)) {
return false;
}
ProcessAnnotatedTypeEventResolvable other = (ProcessAnnotatedTypeEventResolvable) obj;
if (types == null) {
if (other.types != null) {
return false;
}
} else if (!types.equals(other.types)) {
return false;
}
return true;
}
}