Many resources are needed to download a project. Please understand that we have to compensate our server costs. Thank you in advance. Project price only 1 $
You can buy this project and download/modify it how often you want.
/*
* JBoss, Home of Professional Open Source
* Copyright 2010, 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.util;
import java.lang.annotation.Annotation;
import java.util.Collection;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import javax.enterprise.inject.spi.AnnotatedType;
import org.jboss.weld.exceptions.DefinitionException;
import org.jboss.weld.exceptions.DeploymentException;
import org.jboss.weld.logging.BeanLogger;
import org.jboss.weld.logging.BeanManagerLogger;
import org.jboss.weld.manager.BeanManagerImpl;
import org.jboss.weld.metadata.cache.MetaAnnotationStore;
/**
* Helper class for working with interceptors and interceptor bindings.
* @author Jozef Hartinger
*
*/
public class Interceptors {
private Interceptors() {
}
/**
* Extracts a set of interceptor bindings from a collection of annotations.
* @param beanManager
* @param annotations
* @return
*/
public static Set filterInterceptorBindings(BeanManagerImpl beanManager, Collection annotations) {
Set interceptorBindings = new InterceptorBindingSet(beanManager);
for (Annotation annotation : annotations) {
if (beanManager.isInterceptorBinding(annotation.annotationType())) {
interceptorBindings.add(annotation);
}
}
return interceptorBindings;
}
/**
* Extracts a flat set of interception bindings from a given set of interceptor bindings.
*
* @param addTopLevelInterceptorBindings add top level interceptor bindings to the result set.
* @param addInheritedInterceptorBindings add inherited level interceptor bindings to the result set.
* @return
*/
public static Set flattenInterceptorBindings(BeanManagerImpl beanManager, Collection annotations, boolean addTopLevelInterceptorBindings,
boolean addInheritedInterceptorBindings) {
Set flattenInterceptorBindings = new InterceptorBindingSet(beanManager);
if (addTopLevelInterceptorBindings) {
for (Annotation annotation : annotations) {
boolean added = flattenInterceptorBindings.add(annotation);
if (!added) {
throw BeanManagerLogger.LOG.duplicateInterceptorBinding(annotations);
}
}
}
if (addInheritedInterceptorBindings) {
for (Annotation annotation : annotations) {
addInheritedInterceptorBindings(annotation.annotationType(), beanManager.getServices().get(MetaAnnotationStore.class), flattenInterceptorBindings);
}
}
return flattenInterceptorBindings;
}
private static void addInheritedInterceptorBindings(Class bindingType, MetaAnnotationStore store, Set inheritedBindings) {
Set metaBindings = store.getInterceptorBindingModel(bindingType).getInheritedInterceptionBindingTypes();
inheritedBindings.addAll(metaBindings);
for (Annotation metaBinding : metaBindings) {
addInheritedInterceptorBindings(metaBinding.annotationType(), store, inheritedBindings);
}
}
/**
* Merge class-level interceptor bindings with interceptor bindings inherited from interceptor bindings and stereotypes.
*/
public static Map, Annotation> mergeBeanInterceptorBindings(BeanManagerImpl beanManager, AnnotatedType clazz, Collection> stereotypes) {
Set classBindingAnnotations = flattenInterceptorBindings(beanManager, filterInterceptorBindings(beanManager, clazz.getAnnotations()), true, false);
Set inheritedBindingAnnotations = new HashSet();
inheritedBindingAnnotations.addAll(flattenInterceptorBindings(beanManager, filterInterceptorBindings(beanManager, clazz.getAnnotations()), false, true));
for (Class annotation : stereotypes) {
inheritedBindingAnnotations.addAll(flattenInterceptorBindings(beanManager, filterInterceptorBindings(beanManager, beanManager.getStereotypeDefinition(annotation)), true, true));
}
try {
return mergeBeanInterceptorBindings(beanManager, clazz, classBindingAnnotations, inheritedBindingAnnotations);
} catch (DeploymentException e) {
throw new DefinitionException(BeanLogger.LOG.conflictingInterceptorBindings(clazz.getJavaClass()));
}
}
/**
* Merge class-level interceptor bindings with interceptor bindings inherited from interceptor bindings and stereotypes.
*/
public static Map, Annotation> mergeBeanInterceptorBindings(BeanManagerImpl beanManager, AnnotatedType clazz, Collection classBindingAnnotations,
Collection inheritedBindingAnnotations) {
Map, Annotation> mergedBeanBindings = new HashMap, Annotation>();
// conflict detection
Map, Annotation> acceptedInheritedBindingTypes = new HashMap, Annotation>();
// add all class-level interceptor bindings (these have precedence)
for (Annotation bindingAnnotation : classBindingAnnotations) {
if (mergedBeanBindings.containsKey(bindingAnnotation.annotationType())) {
// not possible in Java, but we never know what extension-provided AnnotatedType returns
throw new DeploymentException(BeanLogger.LOG.conflictingInterceptorBindings(clazz.getJavaClass()));
}
mergedBeanBindings.put(bindingAnnotation.annotationType(), bindingAnnotation);
}
// add inherited interceptor bindings
for (Annotation bindingAnnotation : inheritedBindingAnnotations) {
Class bindingAnnotationType = bindingAnnotation.annotationType();
// replace the previous interceptor binding with current binding
Annotation previousValue = mergedBeanBindings.get(bindingAnnotationType);
if (previousValue == null) {
mergedBeanBindings.put(bindingAnnotationType, bindingAnnotation);
acceptedInheritedBindingTypes.put(bindingAnnotationType, bindingAnnotation);
} else {
// check for conflicts
if (acceptedInheritedBindingTypes.containsKey(bindingAnnotationType)
&& !beanManager.getServices().get(MetaAnnotationStore.class).getInterceptorBindingModel(bindingAnnotationType)
.isEqual(previousValue, bindingAnnotation, true)) {
throw new DeploymentException(BeanLogger.LOG.conflictingInterceptorBindings(clazz.getJavaClass()));
}
}
}
return mergedBeanBindings;
}
}
