001/*
002 * Copyright 2002-2018 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;
021import java.util.ArrayList;
022import java.util.List;
023
024import org.springframework.core.annotation.AnnotatedElementUtils;
025import org.springframework.core.annotation.AnnotationAttributes;
026import org.springframework.core.annotation.AnnotationUtils;
027import org.springframework.transaction.interceptor.NoRollbackRuleAttribute;
028import org.springframework.transaction.interceptor.RollbackRuleAttribute;
029import org.springframework.transaction.interceptor.RuleBasedTransactionAttribute;
030import org.springframework.transaction.interceptor.TransactionAttribute;
031
032/**
033 * Strategy implementation for parsing Spring's {@link Transactional} annotation.
034 *
035 * @author Juergen Hoeller
036 * @since 2.5
037 */
038@SuppressWarnings("serial")
039public class SpringTransactionAnnotationParser implements TransactionAnnotationParser, Serializable {
040
041        @Override
042        public TransactionAttribute parseTransactionAnnotation(AnnotatedElement element) {
043                AnnotationAttributes attributes = AnnotatedElementUtils.getMergedAnnotationAttributes(
044                                element, Transactional.class);
045                if (attributes != null) {
046                        return parseTransactionAnnotation(attributes);
047                }
048                else {
049                        return null;
050                }
051        }
052
053        public TransactionAttribute parseTransactionAnnotation(Transactional ann) {
054                return parseTransactionAnnotation(AnnotationUtils.getAnnotationAttributes(ann, false, false));
055        }
056
057        protected TransactionAttribute parseTransactionAnnotation(AnnotationAttributes attributes) {
058                RuleBasedTransactionAttribute rbta = new RuleBasedTransactionAttribute();
059
060                Propagation propagation = attributes.getEnum("propagation");
061                rbta.setPropagationBehavior(propagation.value());
062                Isolation isolation = attributes.getEnum("isolation");
063                rbta.setIsolationLevel(isolation.value());
064                rbta.setTimeout(attributes.getNumber("timeout").intValue());
065                rbta.setReadOnly(attributes.getBoolean("readOnly"));
066                rbta.setQualifier(attributes.getString("value"));
067
068                List<RollbackRuleAttribute> rollbackRules = new ArrayList<RollbackRuleAttribute>();
069                for (Class<?> rbRule : attributes.getClassArray("rollbackFor")) {
070                        rollbackRules.add(new RollbackRuleAttribute(rbRule));
071                }
072                for (String rbRule : attributes.getStringArray("rollbackForClassName")) {
073                        rollbackRules.add(new RollbackRuleAttribute(rbRule));
074                }
075                for (Class<?> rbRule : attributes.getClassArray("noRollbackFor")) {
076                        rollbackRules.add(new NoRollbackRuleAttribute(rbRule));
077                }
078                for (String rbRule : attributes.getStringArray("noRollbackForClassName")) {
079                        rollbackRules.add(new NoRollbackRuleAttribute(rbRule));
080                }
081                rbta.setRollbackRules(rollbackRules);
082
083                return rbta;
084        }
085
086
087        @Override
088        public boolean equals(Object other) {
089                return (this == other || other instanceof SpringTransactionAnnotationParser);
090        }
091
092        @Override
093        public int hashCode() {
094                return SpringTransactionAnnotationParser.class.hashCode();
095        }
096
097}