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HikariCPSessionImpl.java
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HikariCPSessionImpl.java
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package com.miragesql.miragesql.session;
import java.sql.Connection;
import java.sql.SQLException;
import java.util.Properties;
import com.zaxxer.hikari.HikariConfig;
import com.zaxxer.hikari.HikariDataSource;
import com.zaxxer.hikari.util.PropertyElf;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.sql.DataSource;
import com.miragesql.miragesql.SqlManager;
import com.miragesql.miragesql.SqlManagerImpl;
import com.miragesql.miragesql.exception.ConfigurationException;
import com.miragesql.miragesql.exception.SessionException;
import com.miragesql.miragesql.provider.DefaultConnectionProvider;
import com.miragesql.miragesql.util.StringUtil;
/**
* The implementation of {@link Session} which gets the connection from the HikariCP (connection pool).
* <p>
* To enable HikariCP, you have to add to jdbc.properties the following properties:
* <pre>
* session.class=com.miragesql.miragesql.session.HikariCPSessionImpl
* jdbc.driver=com.mysql.jdbc.Driver
* jdbc.url=jdbc:mysql://localhost/test
* jdbc.user=root
* jdbc.password=
* dataSource.setting_X=value_X
* dataSource.setting_Y=value_Y
* </pre>
*
* where <code>setting_X</code> and <code>setting_Y</code> are HikariCP specific <b>optional</b> properties.
* Note: All HikariCP optional properties must be prefixed with <code>dataSource.</code>.
* See <a href="https://github.com/brettwooldridge/HikariCP#configuration-knobs-baby" target="_blank">https://github.com/brettwooldridge/HikariCP#configuration-knobs-baby</a> for details.
*/
public class HikariCPSessionImpl implements Session {
private static final Logger logger = LoggerFactory.getLogger(HikariCPSessionImpl.class);
private SqlManager sqlManager;
private DefaultConnectionProvider provider;
private DataSource dataSource;
private ThreadLocal<Boolean> rollbackOnly = new ThreadLocal<>();
/**
* The constructor.
*
* @param properties the Properties object which has a following properties:
* <ul>
* <li>jdbc.driver - the JDBC driver classname (optional on JDBC 4.0)</li>
* <li>jdbc.url - the JDBC connection URL</li>
* <li>jdbc.user - the username</li>
* <li>jdbc.password - the password</li>
* <li>dataSource.xxx - HikariCP Optional settings</li>
* </ul>
*/
public HikariCPSessionImpl(Properties properties){
String driver = properties.getProperty("jdbc.driver");
String url = properties.getProperty("jdbc.url");
String user = properties.getProperty("jdbc.user");
String password = properties.getProperty("jdbc.password");
sqlManager = new SqlManagerImpl();
sqlManager.setDialect(DialectAutoSelector.getDialect(url));
provider = new DefaultConnectionProvider();
sqlManager.setConnectionProvider(provider);
String cache = properties.getProperty("sql.cache");
if("true".equals(cache)){
((SqlManagerImpl) sqlManager).setCacheMode(true);
} else {
((SqlManagerImpl) sqlManager).setCacheMode(false);
}
try {
if(StringUtil.isNotEmpty(driver)){
Class.forName(driver);
}
} catch (ClassNotFoundException e) {
throw new ConfigurationException(e);
}
HikariConfig config = new HikariConfig();
config.setDriverClassName(driver);
config.setJdbcUrl(url);
config.setUsername(user);
config.setPassword(password);
// set Hikari optional properties. All start with "dataSource.XXX"
PropertyElf.setTargetFromProperties(config, properties);
dataSource = new HikariDataSource(config);
}
/**{@inheritDoc}*/
public void begin() {
if(logger.isInfoEnabled()){
logger.info("Begin transaction.");
}
try {
Connection conn = dataSource.getConnection();
conn.setAutoCommit(false);
provider.setConnection(conn);
} catch (SQLException ex){
throw new SessionException("Failed to begin transaction.", ex);
}
}
/**{@inheritDoc}*/
public void commit() {
if(logger.isInfoEnabled()){
logger.info("Commit transaction.");
}
try {
provider.getConnection().commit();
} catch (SQLException ex){
throw new SessionException("Failed to commit transaction.", ex);
}
}
/**{@inheritDoc}*/
public void rollback() {
if(logger.isInfoEnabled()){
logger.info("Rollback transaction.");
}
try {
provider.getConnection().rollback();
} catch (SQLException ex){
throw new SessionException("Failed to rollback transaction.", ex);
}
}
/**{@inheritDoc}*/
public void release() {
this.rollbackOnly.remove();
if(provider instanceof DefaultConnectionProvider){
((DefaultConnectionProvider) provider).releaseConnection();
}
}
/**{@inheritDoc}*/
public SqlManager getSqlManager() {
return sqlManager;
}
/**{@inheritDoc}*/
public void setRollbackOnly() {
this.rollbackOnly.set(true);
}
/**{@inheritDoc}*/
public boolean isRollbackOnly() {
return this.rollbackOnly.get() != null;
}
}