Source Code Cross Referenced for Propagation.java in  » J2EE » spring-framework-2.0.6 » org » springframework » transaction » annotation » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » J2EE » spring framework 2.0.6 » org.springframework.transaction.annotation 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * Copyright 2002-2005 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:         *      http://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:
017:        package org.springframework.transaction.annotation;
018:
019:        import org.springframework.transaction.TransactionDefinition;
020:
021:        /**
022:         * Enumeration that represents transaction propagation behaviors
023:         * for use with the JDK 1.5+ transaction annotation, corresponding
024:         * to the TransactionDefinition interface.
025:         *
026:         * @author Colin Sampaleanu
027:         * @author Juergen Hoeller
028:         * @since 1.2
029:         * @see org.springframework.transaction.annotation.Transactional
030:         * @see org.springframework.transaction.TransactionDefinition
031:         */
032:        public enum Propagation {
033:
034:            /**
035:             * Support a current transaction, create a new one if none exists.
036:             * Analogous to EJB transaction attribute of the same name.
037:             * <p>This is the default setting of a transaction annotation.
038:             */
039:            REQUIRED(TransactionDefinition.PROPAGATION_REQUIRED),
040:
041:            /**
042:             * Support a current transaction, execute non-transactionally if none exists.
043:             * Analogous to EJB transaction attribute of the same name.
044:             * <p>Note: For transaction managers with transaction synchronization,
045:             * PROPAGATION_SUPPORTS is slightly different from no transaction at all,
046:             * as it defines a transaction scopp that synchronization will apply for.
047:             * As a consequence, the same resources (JDBC Connection, Hibernate Session, etc)
048:             * will be shared for the entire specified scope. Note that this depends on
049:             * the actual synchronization configuration of the transaction manager.
050:             * @see org.springframework.transaction.support.AbstractPlatformTransactionManager#setTransactionSynchronization
051:             */
052:            SUPPORTS(TransactionDefinition.PROPAGATION_SUPPORTS),
053:
054:            /**
055:             * Support a current transaction, throw an exception if none exists.
056:             * Analogous to EJB transaction attribute of the same name.
057:             */
058:            MANDATORY(TransactionDefinition.PROPAGATION_MANDATORY),
059:
060:            /**
061:             * Create a new transaction, suspend the current transaction if one exists.
062:             * Analogous to EJB transaction attribute of the same name.
063:             * <p>Note: Actual transaction suspension will not work on out-of-the-box
064:             * on all transaction managers. This in particular applies to JtaTransactionManager,
065:             * which requires the <code>javax.transaction.TransactionManager</code> to be
066:             * made available it to it (which is server-specific in standard J2EE).
067:             * @see org.springframework.transaction.jta.JtaTransactionManager#setTransactionManager
068:             */
069:            REQUIRES_NEW(TransactionDefinition.PROPAGATION_REQUIRES_NEW),
070:
071:            /**
072:             * Execute non-transactionally, suspend the current transaction if one exists.
073:             * Analogous to EJB transaction attribute of the same name.
074:             * <p>Note: Actual transaction suspension will not work on out-of-the-box
075:             * on all transaction managers. This in particular applies to JtaTransactionManager,
076:             * which requires the <code>javax.transaction.TransactionManager</code> to be
077:             * made available it to it (which is server-specific in standard J2EE).
078:             * @see org.springframework.transaction.jta.JtaTransactionManager#setTransactionManager
079:             */
080:            NOT_SUPPORTED(TransactionDefinition.PROPAGATION_NOT_SUPPORTED),
081:
082:            /**
083:             * Execute non-transactionally, throw an exception if a transaction exists.
084:             * Analogous to EJB transaction attribute of the same name.
085:             */
086:            NEVER(TransactionDefinition.PROPAGATION_NEVER),
087:
088:            /**
089:             * Execute within a nested transaction if a current transaction exists,
090:             * behave like PROPAGATION_REQUIRED else. There is no analogous feature in EJB.
091:             * <p>Note: Actual creation of a nested transaction will only work on specific
092:             * transaction managers. Out of the box, this only applies to the JDBC
093:             * DataSourceTransactionManager when working on a JDBC 3.0 driver.
094:             * Some JTA providers might support nested transactions as well.
095:             * @see org.springframework.jdbc.datasource.DataSourceTransactionManager
096:             */
097:            NESTED(TransactionDefinition.PROPAGATION_NESTED);
098:
099:            private final int value;
100:
101:            Propagation(int value) {
102:                this .value = value;
103:            }
104:
105:            public int value() {
106:                return value;
107:            }
108:
109:        }
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