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This jar bundles all the bits of Weld and CDI required for running in a Servlet container.
/*
* JBoss, Home of Professional Open Source
* Copyright 2008, 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.injection.producer;
import java.lang.reflect.Modifier;
import java.util.List;
import javax.enterprise.context.Dependent;
import javax.enterprise.context.spi.CreationalContext;
import javax.enterprise.inject.spi.Bean;
import javax.enterprise.inject.spi.Decorator;
import javax.enterprise.inject.spi.Interceptor;
import org.jboss.weld.annotated.enhanced.EnhancedAnnotatedConstructor;
import org.jboss.weld.annotated.enhanced.EnhancedAnnotatedMethod;
import org.jboss.weld.annotated.enhanced.EnhancedAnnotatedType;
import org.jboss.weld.bean.CustomDecoratorWrapper;
import org.jboss.weld.bean.DecoratorImpl;
import org.jboss.weld.bean.proxy.ProxyInstantiator;
import org.jboss.weld.interceptor.spi.model.InterceptionModel;
import org.jboss.weld.logging.BeanLogger;
import org.jboss.weld.manager.BeanManagerImpl;
import org.jboss.weld.resources.ClassTransformer;
import org.jboss.weld.util.reflection.Formats;
/**
* @author Pete Muir
* @author Jozef Hartinger
*/
public class BeanInjectionTarget extends BasicInjectionTarget {
public static BeanInjectionTarget createDefault(EnhancedAnnotatedType type, Bean bean, BeanManagerImpl beanManager) {
return new BeanInjectionTarget(type, bean, beanManager);
}
public static BeanInjectionTarget forCdiInterceptor(EnhancedAnnotatedType type, Bean bean, BeanManagerImpl manager) {
return new BeanInjectionTarget(type, bean, manager, ResourceInjector.of(type, bean, manager), NoopLifecycleCallbackInvoker.getInstance());
}
private final Bean bean;
public BeanInjectionTarget(EnhancedAnnotatedType type, Bean bean, BeanManagerImpl beanManager, Injector injector, LifecycleCallbackInvoker invoker) {
super(type, bean, beanManager, injector, invoker);
this.bean = bean;
}
public BeanInjectionTarget(EnhancedAnnotatedType type, Bean bean, BeanManagerImpl beanManager) {
this(type, bean, beanManager, ResourceInjector.of(type, bean, beanManager), DefaultLifecycleCallbackInvoker.of(type));
}
@Override
public void dispose(T instance) {
// No-op
}
protected boolean isInterceptor() {
return (getBean() instanceof Interceptor) || getType().isAnnotationPresent(javax.interceptor.Interceptor.class);
}
protected boolean isDecorator() {
return (getBean() instanceof Decorator) || getType().isAnnotationPresent(javax.decorator.Decorator.class);
}
protected boolean isInterceptionCandidate() {
return !isInterceptor() && !isDecorator() && !Modifier.isAbstract(getType().getJavaClass().getModifiers());
}
protected void initializeInterceptionModel(EnhancedAnnotatedType annotatedType) {
AbstractInstantiator instantiator = (AbstractInstantiator) getInstantiator();
if (instantiator.getConstructorInjectionPoint() == null) {
return; // this is a non-producible InjectionTarget (only created to inject existing instances)
}
if (isInterceptionCandidate() && !beanManager.getInterceptorModelRegistry().containsKey(getType())) {
buildInterceptionModel(annotatedType, instantiator);
}
}
protected void buildInterceptionModel(EnhancedAnnotatedType annotatedType, AbstractInstantiator instantiator) {
new InterceptionModelInitializer(beanManager, annotatedType, annotatedType.getDeclaredEnhancedConstructor(instantiator.getConstructorInjectionPoint().getSignature()), getBean()).init();
}
@Override
public void initializeAfterBeanDiscovery(EnhancedAnnotatedType annotatedType) {
initializeInterceptionModel(annotatedType);
InterceptionModel interceptionModel = null;
if (isInterceptionCandidate()) {
interceptionModel = beanManager.getInterceptorModelRegistry().get(getType());
}
boolean hasNonConstructorInterceptors = interceptionModel != null && (interceptionModel.hasExternalNonConstructorInterceptors() || interceptionModel.hasTargetClassInterceptors());
List> decorators = null;
if (getBean() != null && isInterceptionCandidate()) {
decorators = beanManager.resolveDecorators(getBean().getTypes(), getBean().getQualifiers());
}
boolean hasDecorators = decorators != null && !decorators.isEmpty();
if (hasDecorators) {
checkDecoratedMethods(annotatedType, decorators);
}
if (hasNonConstructorInterceptors || hasDecorators) {
if (!(getInstantiator() instanceof DefaultInstantiator)) {
throw new java.lang.IllegalStateException("Unexpected instantiator " + getInstantiator());
}
DefaultInstantiator delegate = (DefaultInstantiator) getInstantiator();
setInstantiator(SubclassedComponentInstantiator.forInterceptedDecoratedBean(annotatedType, getBean(), delegate, beanManager));
if (hasDecorators) {
setInstantiator(new SubclassDecoratorApplyingInstantiator(getBeanManager().getContextId(), getInstantiator(), getBean(), decorators));
}
if (hasNonConstructorInterceptors) {
setInstantiator(new InterceptorApplyingInstantiator(getInstantiator(), interceptionModel, getType()));
}
}
if (isInterceptionCandidate()) {
setupConstructorInterceptionInstantiator(interceptionModel);
}
}
protected void setupConstructorInterceptionInstantiator(InterceptionModel interceptionModel) {
if (interceptionModel != null && interceptionModel.hasExternalConstructorInterceptors()) {
setInstantiator(new ConstructorInterceptionInstantiator(getInstantiator(), interceptionModel, getType()));
}
}
protected void checkNoArgsConstructor(EnhancedAnnotatedType type) {
EnhancedAnnotatedConstructor constructor = type.getNoArgsEnhancedConstructor();
if (constructor == null) {
if (!beanManager.getServices().get(ProxyInstantiator.class).isUsingConstructor()) {
// Relaxed construction allows us to bypass non-existent no-arg constructor
return;
} else {
// Without relaxed contruction, CDI enforces existence of no-arg constructor
throw BeanLogger.LOG.decoratedHasNoNoargsConstructor(this);
}
} else {
if (constructor.isPrivate()) {
// Private no-arg constructor is a problem while creating the decorator and we have to blow up
throw BeanLogger.LOG.decoratedNoargsConstructorIsPrivate(this, Formats.formatAsStackTraceElement(constructor.getJavaMember()));
}
}
}
protected void checkDecoratedMethods(EnhancedAnnotatedType type, List> decorators) {
if (type.isFinal()) {
throw BeanLogger.LOG.finalBeanClassWithDecoratorsNotAllowed(this);
}
checkNoArgsConstructor(type);
for (Decorator decorator : decorators) {
EnhancedAnnotatedType decoratorClass;
if (decorator instanceof DecoratorImpl) {
DecoratorImpl decoratorBean = (DecoratorImpl) decorator;
decoratorClass = decoratorBean.getBeanManager().getServices().get(ClassTransformer.class).getEnhancedAnnotatedType(decoratorBean.getAnnotated());
} else if (decorator instanceof CustomDecoratorWrapper) {
decoratorClass = ((CustomDecoratorWrapper) decorator).getEnhancedAnnotated();
} else {
throw BeanLogger.LOG.nonContainerDecorator(decorator);
}
for (EnhancedAnnotatedMethod decoratorMethod : decoratorClass.getEnhancedMethods()) {
EnhancedAnnotatedMethod method = type.getEnhancedMethod(decoratorMethod.getSignature());
if (method != null && !method.isStatic() && !method.isPrivate() && method.isFinal()) {
throw BeanLogger.LOG.finalBeanClassWithInterceptorsNotAllowed(this);
}
}
}
}
@Override
public T produce(CreationalContext ctx) {
T instance = super.produce(ctx);
if (bean != null && !bean.getScope().equals(Dependent.class) && !getInstantiator().hasDecoratorSupport()) {
// This should be safe, but needs verification PLM
// Without this, the chaining of decorators will fail as the
// incomplete instance will be resolved
ctx.push(instance);
}
return instance;
}
@Override
public Bean getBean() {
return bean;
}
}