001/*
002 * Copyright 2002-2019 the original author or authors.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *      https://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017package org.springframework.transaction.annotation;
018
019import java.io.Serializable;
020import java.lang.reflect.AnnotatedElement;
021
022import javax.ejb.ApplicationException;
023import javax.ejb.TransactionAttributeType;
024
025import org.springframework.core.annotation.AnnotationUtils;
026import org.springframework.lang.Nullable;
027import org.springframework.transaction.interceptor.DefaultTransactionAttribute;
028import org.springframework.transaction.interceptor.TransactionAttribute;
029
030/**
031 * Strategy implementation for parsing EJB3's {@link javax.ejb.TransactionAttribute}
032 * annotation.
033 *
034 * @author Juergen Hoeller
035 * @since 2.5
036 */
037@SuppressWarnings("serial")
038public class Ejb3TransactionAnnotationParser implements TransactionAnnotationParser, Serializable {
039
040        @Override
041        public boolean isCandidateClass(Class<?> targetClass) {
042                return AnnotationUtils.isCandidateClass(targetClass, javax.ejb.TransactionAttribute.class);
043        }
044
045        @Override
046        @Nullable
047        public TransactionAttribute parseTransactionAnnotation(AnnotatedElement element) {
048                javax.ejb.TransactionAttribute ann = element.getAnnotation(javax.ejb.TransactionAttribute.class);
049                if (ann != null) {
050                        return parseTransactionAnnotation(ann);
051                }
052                else {
053                        return null;
054                }
055        }
056
057        public TransactionAttribute parseTransactionAnnotation(javax.ejb.TransactionAttribute ann) {
058                return new Ejb3TransactionAttribute(ann.value());
059        }
060
061
062        @Override
063        public boolean equals(@Nullable Object other) {
064                return (this == other || other instanceof Ejb3TransactionAnnotationParser);
065        }
066
067        @Override
068        public int hashCode() {
069                return Ejb3TransactionAnnotationParser.class.hashCode();
070        }
071
072
073        /**
074         * EJB3-specific TransactionAttribute, implementing EJB3's rollback rules
075         * which are based on annotated exceptions.
076         */
077        private static class Ejb3TransactionAttribute extends DefaultTransactionAttribute {
078
079                public Ejb3TransactionAttribute(TransactionAttributeType type) {
080                        setPropagationBehaviorName(PREFIX_PROPAGATION + type.name());
081                }
082
083                @Override
084                public boolean rollbackOn(Throwable ex) {
085                        ApplicationException ann = ex.getClass().getAnnotation(ApplicationException.class);
086                        return (ann != null ? ann.rollback() : super.rollbackOn(ex));
087                }
088        }
089
090}