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/*
* Copyright (c) 2008-2023 The Aspectran Project
*
* 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 com.aspectran.mybatis;
import com.aspectran.core.util.ToStringBuilder;
import com.aspectran.core.util.logging.Logger;
import com.aspectran.core.util.logging.LoggerFactory;
import org.apache.ibatis.session.ExecutorType;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
/**
* Advice for SqlSession Transactions.
*
* @author Juho Jeong
* @since 2015. 04. 03.
*/
public class SqlSessionTxAdvice {
private static final Logger logger = LoggerFactory.getLogger(SqlSessionTxAdvice.class);
private final SqlSessionFactory sqlSessionFactory;
private ExecutorType executorType;
private boolean autoCommit;
private SqlSession sqlSession;
private boolean arbitrarilyClosed;
public SqlSessionTxAdvice(SqlSessionFactory sqlSessionFactory) {
this.sqlSessionFactory = sqlSessionFactory;
}
/**
* Specifies whether to auto-commit.
* @param autoCommit true to automatically commit each time updates/deletes/inserts
* is called, false to commit manually
*/
public void setAutoCommit(boolean autoCommit) {
this.autoCommit = autoCommit;
}
/**
* Sets the mode for using PreparedStatements effectively.
* @param executorType executor types include SIMPLE, REUSE, and BATCH, and can be
* specified as a string value
*/
public void setExecutorType(String executorType) {
this.executorType = ExecutorType.valueOf(executorType);
}
/**
* Returns an open SqlSession.
* If no SqlSession is open then return null.
* @return a SqlSession instance
*/
public SqlSession getSqlSession() {
return sqlSession;
}
/**
* Opens a new SqlSession and store its instance inside. Therefore, whenever
* there is a request for a SqlSessionTxAdvice bean, a new bean instance of
* the object must be created.
*/
public void open() {
if (sqlSession == null) {
if (executorType == null) {
executorType = ExecutorType.SIMPLE;
}
sqlSession = sqlSessionFactory.openSession(executorType, autoCommit);
if (logger.isDebugEnabled()) {
ToStringBuilder tsb = new ToStringBuilder(String.format("%s %s@%x",
(arbitrarilyClosed ? "Reopened" : "Opened"),
sqlSession.getClass().getSimpleName(),
sqlSession.hashCode()));
tsb.append("executorType", executorType);
tsb.append("autoCommit", autoCommit);
logger.debug(tsb.toString());
}
arbitrarilyClosed = false;
}
}
public void open(boolean autoCommit) {
setAutoCommit(autoCommit);
open();
}
public void open(String executorType) {
setExecutorType(executorType);
open();
}
public void open(String executorType, boolean autoCommit) {
setExecutorType(executorType);
setAutoCommit(autoCommit);
open();
}
/**
* Flushes batch statements and commits database connection.
* Note that database connection will not be committed if no updates/deletes/inserts were called.
* To force the commit, call {@link #commit(boolean)}.
*/
public void commit() {
if (checkSession()) {
return;
}
if (logger.isDebugEnabled()) {
logger.debug(String.format("Commit transaction for %s@%x",
sqlSession.getClass().getSimpleName(),
sqlSession.hashCode()));
}
sqlSession.commit();
}
/**
* Flushes batch statements and commits database connection.
* @param force forces connection commit
*/
public void commit(boolean force) {
if (checkSession()) {
return;
}
if (logger.isDebugEnabled()) {
ToStringBuilder tsb = new ToStringBuilder(String.format("Commit transaction for %s@%x",
sqlSession.getClass().getSimpleName(),sqlSession.hashCode()));
tsb.append("force", force);
logger.debug(tsb.toString());
}
sqlSession.commit(force);
}
/**
* Discards pending batch statements and rolls database connection back.
* Note that database connection will not be rolled back if no updates/deletes/inserts were called.
* To force the rollback, call {@link #rollback(boolean)}.
*/
public void rollback() {
if (checkSession()) {
return;
}
if (logger.isDebugEnabled()) {
logger.debug(String.format("Rollback transaction for %s@%x",
sqlSession.getClass().getSimpleName(),
sqlSession.hashCode()));
}
sqlSession.rollback();
}
/**
* Discards pending batch statements and rolls database connection back.
* Note that database connection will not be rolled back if no updates/deletes/inserts were called.
* @param force forces connection rollback
*/
public void rollback(boolean force) {
if (checkSession()) {
return;
}
if (logger.isDebugEnabled()) {
ToStringBuilder tsb = new ToStringBuilder(String.format("Rollback transaction for %s@%x",
sqlSession.getClass().getSimpleName(),sqlSession.hashCode()));
tsb.append("force", force);
logger.debug(tsb.toString());
}
sqlSession.rollback(force);
}
/**
* Closes the session.
*/
public void close() {
close(false);
}
/**
* Closes the session.
* @param arbitrarily true if the session is arbitrarily closed by user code, false otherwise
*/
public void close(boolean arbitrarily) {
if (checkSession()) {
return;
}
arbitrarilyClosed = arbitrarily;
sqlSession.close();
if (logger.isDebugEnabled()) {
logger.debug(String.format("Closed %s@%x",
sqlSession.getClass().getSimpleName(),
sqlSession.hashCode()));
}
sqlSession = null;
}
/**
* Returns whether the session was logically closed in user code, not by the framework.
* @return true if the session was closed by user code, false otherwise
*/
public boolean isArbitrarilyClosed() {
return arbitrarilyClosed;
}
/**
* Checks if the SqlSession is open.
* If the session has already been closed by user code, it always returns true to ignore further processing.
* @return true if the session has already been closed by user code, otherwise false
*/
private boolean checkSession() {
if (arbitrarilyClosed) {
return true;
}
if (sqlSession == null) {
throw new IllegalStateException("SqlSession is not open");
}
return false;
}
}
