| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.apache.webbeans.decorator; |
| |
| import java.lang.annotation.Annotation; |
| import java.lang.reflect.Type; |
| import java.util.ArrayList; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Set; |
| import java.util.concurrent.CopyOnWriteArrayList; |
| import java.util.concurrent.CopyOnWriteArraySet; |
| |
| import javax.enterprise.inject.spi.Decorator; |
| |
| import org.apache.webbeans.annotation.DefaultLiteral; |
| import org.apache.webbeans.component.OwbBean; |
| import org.apache.webbeans.config.WebBeansContext; |
| import org.apache.webbeans.exception.WebBeansConfigurationException; |
| import org.apache.webbeans.util.AnnotationUtil; |
| import org.apache.webbeans.util.Asserts; |
| import org.apache.webbeans.util.GenericsUtil; |
| |
| public class DecoratorsManager |
| { |
| private List<Class<?>> enabledDecorators = new CopyOnWriteArrayList<Class<?>>(); |
| private final WebBeansContext webBeansContext; |
| |
| /** |
| * Additional decorator classes added by Extensions |
| */ |
| private List<Class<?>> additionalDecoratorClasses = new ArrayList<Class<?>>(); |
| |
| /** |
| * Active and enabled decorators |
| */ |
| private Set<Decorator<?>> webBeansDecorators = new CopyOnWriteArraySet<Decorator<?>>(); |
| |
| |
| |
| public DecoratorsManager(WebBeansContext webBeansContext) |
| { |
| this.webBeansContext = webBeansContext; |
| } |
| |
| public void addEnabledDecorator(Class<?> decoratorClazz) |
| { |
| Asserts.assertNotNull(decoratorClazz, "decoratorClazz parameter can not be emtpy"); |
| if (!enabledDecorators.contains(decoratorClazz)) |
| { |
| enabledDecorators.add(decoratorClazz); |
| } |
| } |
| |
| public int compare(Class<?> src, Class<?> target) |
| { |
| Asserts.assertNotNull(src, "src parameter can not be null"); |
| Asserts.assertNotNull(target, "target parameter can not be null"); |
| |
| int srcIndex = enabledDecorators.indexOf(src); |
| int targetIndex = enabledDecorators.indexOf(target); |
| |
| if (srcIndex == -1 || targetIndex == -1) |
| { |
| throw new IllegalArgumentException("One of the compare class of the list : [" + src.getName() + "," + target.getName() + "]" |
| + " is not contained in the enabled decorators list!"); |
| } |
| |
| if (srcIndex == targetIndex) |
| { |
| return 0; |
| } |
| else if (srcIndex < targetIndex) |
| { |
| return -1; |
| } |
| else |
| { |
| return 1; |
| } |
| } |
| |
| public boolean isDecoratorEnabled(Class<?> decoratorClazz) |
| { |
| Asserts.nullCheckForClass(decoratorClazz, "decoratorClazz can not be null"); |
| |
| return enabledDecorators.contains(decoratorClazz); |
| } |
| |
| public void validateDecoratorClasses() |
| { |
| for(Class<?> decoratorClazz : enabledDecorators) |
| { |
| //Validate decorator classes |
| if(!decoratorClazz.isAnnotationPresent(javax.decorator.Decorator.class) && !containsCustomDecoratorClass(decoratorClazz)) |
| { |
| throw new WebBeansConfigurationException("Given class : " + decoratorClazz + " is not a decorator class"); |
| } |
| } |
| } |
| |
| public void addCustomDecoratorClass(Class<?> clazz) |
| { |
| Asserts.nullCheckForClass(clazz); |
| additionalDecoratorClasses.add(clazz); |
| } |
| |
| public boolean containsCustomDecoratorClass(Class<?> clazz) |
| { |
| Asserts.nullCheckForClass(clazz); |
| return additionalDecoratorClasses.contains(clazz); |
| } |
| |
| public Set<Decorator<?>> getDecorators() |
| { |
| return webBeansDecorators; |
| } |
| |
| public void addDecorator(Decorator decorator) |
| { |
| webBeansDecorators.add(decorator); |
| if (decorator instanceof OwbBean) |
| { |
| OwbBean<?> owbBean = (OwbBean<?>)decorator; |
| |
| if(owbBean.isPassivationCapable()) |
| { |
| webBeansContext.getBeanManagerImpl().addPassivationInfo(decorator); |
| } |
| } |
| } |
| |
| public Set<Decorator<?>> findDeployedWebBeansDecorator(Set<Type> apiTypes, Annotation... anns) |
| { |
| Set<Decorator<?>> set = new HashSet<Decorator<?>>(); |
| |
| List<Class<? extends Annotation>> bindingTypes = new ArrayList<Class<? extends Annotation>>(); |
| Set<Annotation> listAnnot = new HashSet<Annotation>(); |
| for (Annotation ann : anns) |
| { |
| bindingTypes.add(ann.annotationType()); |
| listAnnot.add(ann); |
| } |
| |
| if (listAnnot.isEmpty()) |
| { |
| listAnnot.add(DefaultLiteral.INSTANCE); |
| } |
| |
| for (Decorator<?> decorator : getDecorators()) |
| { |
| if (isDecoratorMatch(decorator, apiTypes, listAnnot)) |
| { |
| set.add(decorator); |
| } |
| } |
| |
| return set; |
| |
| } |
| |
| private boolean isDecoratorMatch(Decorator<?> decorator, Set<Type> apiTypes, Set<Annotation> annotations) |
| { |
| // 8.3.1 |
| if (!apiTypesMatchDelegateType(decorator, apiTypes)) |
| { |
| return false; |
| } |
| |
| for (Annotation bindingType : decorator.getDelegateQualifiers()) |
| { |
| if (!bindingMatchesAnnotations(bindingType, annotations)) |
| { |
| return false; |
| } |
| } |
| |
| return true; |
| } |
| |
| private boolean bindingMatchesAnnotations(Annotation bindingType, Set<Annotation> annotations) |
| { |
| |
| for (Annotation annot : annotations) |
| { |
| if (AnnotationUtil.isCdiAnnotationEqual(annot, bindingType)) |
| { |
| return true; |
| } |
| } |
| |
| return false; |
| } |
| |
| /** |
| * Helper method to check if any of a list of Types are assignable to the |
| * delegate type. |
| * |
| * @param apiTypes Set of apiTypes to check against the delegate type |
| * @return true if one of the types is assignable to the delegate type |
| */ |
| private boolean apiTypesMatchDelegateType(Decorator<?> decorator, Set<Type> apiTypes) |
| { |
| boolean ok = false; |
| for (Type apiType : apiTypes) |
| { |
| if (GenericsUtil.satisfiesDependency(true, decorator.getDelegateType(), apiType)) |
| { |
| ok = true; |
| break; |
| } |
| } |
| |
| return ok; |
| } |
| |
| |
| |
| |
| public void clear() |
| { |
| additionalDecoratorClasses.clear(); |
| webBeansDecorators.clear(); |
| } |
| } |