/*
* 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.serialization;
import java.io.Serializable;
import javax.enterprise.inject.spi.AnnotatedCallable;
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.Bean;
import javax.enterprise.inject.spi.InjectionPoint;
import org.jboss.weld.injection.EmptyInjectionPoint;
import org.jboss.weld.logging.BeanLogger;
import org.jboss.weld.logging.SerializationLogger;
import org.jboss.weld.util.Preconditions;
import org.jboss.weld.util.reflection.Reflections;
import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
/**
* Serializable holder for {@link InjectionPoint}.
*
* @author Jozef Hartinger
*
*/
public class InjectionPointHolder extends AbstractSerializableHolder<InjectionPoint> {
private static final long serialVersionUID = -6128821485743815308L;
private final InjectionPointIdentifier identifier;
public InjectionPointHolder(String contextId, InjectionPoint ip) {
super(ip);
Preconditions.checkNotNull(ip);
if (ip.getBean() == null) {
if (ip instanceof Serializable) {
this.identifier = new SerializableInjectionPointIdentifier(ip);
} else {
this.identifier = new TransientInjectionPointIdentifier(ip);
}
} else if (ip.getAnnotated() instanceof AnnotatedField<?>) {
AnnotatedField<?> field = Reflections.cast(ip.getAnnotated());
this.identifier = new FieldInjectionPointIdentifier(contextId, ip.getBean(), field);
} else if (ip.getAnnotated() instanceof AnnotatedParameter<?>) {
AnnotatedParameter<?> parameter = Reflections.cast(ip.getAnnotated());
if (parameter.getDeclaringCallable() instanceof AnnotatedConstructor<?>) {
AnnotatedConstructor<?> constructor = Reflections.cast(parameter.getDeclaringCallable());
this.identifier = new ConstructorParameterInjectionPointIdentifier(contextId, ip.getBean(), parameter.getPosition(), constructor);
} else if (parameter.getDeclaringCallable() instanceof AnnotatedMethod<?>) {
AnnotatedMethod<?> method = Reflections.cast(parameter.getDeclaringCallable());
this.identifier = new MethodParameterInjectionPointIdentifier(contextId, ip.getBean(), parameter.getPosition(), method);
} else {
throw BeanLogger.LOG.invalidAnnotatedCallable(parameter.getDeclaringCallable());
}
} else {
throw BeanLogger.LOG.invalidAnnotatedOfInjectionPoint(ip.getAnnotated(), ip);
}
}
@Override
protected InjectionPoint initialize() {
final InjectionPoint ip = identifier.restoreInjectionPoint();
if (ip == null) {
SerializationLogger.LOG.debug("Unable to deserialize InjectionPoint metadata. Falling back to EmptyInjectionPoint");
return EmptyInjectionPoint.INSTANCE;
}
return ip;
}
private interface InjectionPointIdentifier extends Serializable {
InjectionPoint restoreInjectionPoint();
}
/**
* Transient implementation of {@link InjectionPointIdentifier}. Holds an InjectionPint reference until serialized. After deserialization the reference is lost.
*
* @author Jozef Hartinger
*
*/
private static class TransientInjectionPointIdentifier implements InjectionPointIdentifier {
private static final long serialVersionUID = 6952579330771485841L;
@SuppressFBWarnings("SE_TRANSIENT_FIELD_NOT_RESTORED")
private final transient InjectionPoint ip;
public TransientInjectionPointIdentifier(InjectionPoint ip) {
this.ip = ip;
}
@Override
public InjectionPoint restoreInjectionPoint() {
return ip;
}
}
/**
* Holds a direct reference to an InjectionPoint provided it is {@link Serializable}
*
* @author Jozef Hartinger
*
*/
private static class SerializableInjectionPointIdentifier implements InjectionPointIdentifier {
private static final long serialVersionUID = 6952579330771485841L;
private final InjectionPoint ip;
public SerializableInjectionPointIdentifier(InjectionPoint ip) {
this.ip = ip;
}
@Override
public InjectionPoint restoreInjectionPoint() {
return ip;
}
}
private abstract static class AbstractInjectionPointIdentifier implements InjectionPointIdentifier {
private static final long serialVersionUID = -8167922066673252787L;
private final BeanHolder<?> bean;
public AbstractInjectionPointIdentifier(String contextId, Bean<?> bean) {
this.bean = BeanHolder.of(contextId, bean);
}
@Override
public InjectionPoint restoreInjectionPoint() {
InjectionPoint injectionPoint = null;
for (InjectionPoint ip : bean.get().getInjectionPoints()) {
if (matches(ip)) {
if (injectionPoint != null) {
throw BeanLogger.LOG.unableToRestoreInjectionPointMultiple(bean.get(), injectionPoint, ip);
}
injectionPoint = ip;
}
}
if (injectionPoint == null) {
throw BeanLogger.LOG.unableToRestoreInjectionPoint(bean.get());
}
return injectionPoint;
}
protected abstract boolean matches(InjectionPoint ip);
}
private static class FieldInjectionPointIdentifier extends AbstractInjectionPointIdentifier {
private static final long serialVersionUID = 4581216810217284043L;
private final FieldHolder field;
public FieldInjectionPointIdentifier(String contextId, Bean<?> bean, AnnotatedField<?> field) {
super(contextId, bean);
this.field = new FieldHolder(field.getJavaMember());
}
@Override
protected boolean matches(InjectionPoint ip) {
if (ip.getAnnotated() instanceof AnnotatedField<?>) {
AnnotatedField<?> annotatedField = Reflections.cast(ip.getAnnotated());
return (field.get().equals(annotatedField.getJavaMember()));
}
return false;
}
}
private abstract static class AbstractParameterInjectionPointIdentifier extends AbstractInjectionPointIdentifier {
private static final long serialVersionUID = -3618042716814281161L;
private final int position;
public AbstractParameterInjectionPointIdentifier(String contextId, Bean<?> bean, int position) {
super(contextId, bean);
this.position = position;
}
@Override
protected boolean matches(InjectionPoint ip) {
if (ip.getAnnotated() instanceof AnnotatedParameter<?>) {
AnnotatedParameter<?> annotatedParameter = Reflections.cast(ip.getAnnotated());
return position == annotatedParameter.getPosition() && matches(ip, annotatedParameter.getDeclaringCallable());
}
return false;
}
protected abstract boolean matches(InjectionPoint ip, AnnotatedCallable<?> annotatedCallable);
}
private static class ConstructorParameterInjectionPointIdentifier extends AbstractParameterInjectionPointIdentifier {
private static final long serialVersionUID = 638702977751948835L;
private final ConstructorHolder<?> constructor;
public ConstructorParameterInjectionPointIdentifier(String contextId, Bean<?> bean, int position, AnnotatedConstructor<?> constructor) {
super(contextId, bean, position);
this.constructor = ConstructorHolder.of(constructor.getJavaMember());
}
@Override
protected boolean matches(InjectionPoint ip, AnnotatedCallable<?> annotatedCallable) {
if (annotatedCallable instanceof AnnotatedConstructor<?>) {
AnnotatedConstructor<?> annotatedConstructor = Reflections.cast(annotatedCallable);
return constructor.get().equals(annotatedConstructor.getJavaMember());
}
return false;
}
}
private static class MethodParameterInjectionPointIdentifier extends AbstractParameterInjectionPointIdentifier {
private static final long serialVersionUID = -3263543692438746424L;
private final MethodHolder method;
public MethodParameterInjectionPointIdentifier(String contextId, Bean<?> bean, int position, AnnotatedMethod<?> constructor) {
super(contextId, bean, position);
this.method = MethodHolder.of(constructor);
}
@Override
protected boolean matches(InjectionPoint ip, AnnotatedCallable<?> annotatedCallable) {
if (annotatedCallable instanceof AnnotatedMethod<?>) {
AnnotatedMethod<?> annotatedMethod = Reflections.cast(annotatedCallable);
return method.get().equals(annotatedMethod.getJavaMember());
}
return false;
}
}
}