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Integration for HikariCP into Hibernate O/RM
/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* License: GNU Lesser General Public License (LGPL), version 2.1 or later.
* See the lgpl.txt file in the root directory or .
*/
package org.hibernate.hikaricp.internal;
import java.util.Map;
import java.util.Properties;
import org.hibernate.cfg.AvailableSettings;
import org.hibernate.engine.jdbc.connections.internal.ConnectionProviderInitiator;
import com.zaxxer.hikari.HikariConfig;
/**
* Utility class to map Hibernate properties to HikariCP configuration properties.
*
* @author Brett Wooldridge
* @author Luca Burgazzoli
* @author Brett Meyer
*/
public class HikariConfigurationUtil {
public static final String CONFIG_PREFIX = "hibernate.hikari.";
/**
* Create/load a HikariConfig from Hibernate properties.
*
* @param props a map of Hibernate properties
* @return a HikariConfig
*/
@SuppressWarnings("rawtypes")
public static HikariConfig loadConfiguration(Map props) {
Properties hikariProps = new Properties();
copyProperty( AvailableSettings.AUTOCOMMIT, props, "autoCommit", hikariProps );
copyProperty( AvailableSettings.DRIVER, props, "driverClassName", hikariProps );
copyProperty( AvailableSettings.URL, props, "jdbcUrl", hikariProps );
copyProperty( AvailableSettings.USER, props, "username", hikariProps );
copyProperty( AvailableSettings.PASS, props, "password", hikariProps );
copyIsolationSetting( props, hikariProps );
for ( Object keyo : props.keySet() ) {
if ( !(keyo instanceof String) ) {
continue;
}
String key = (String) keyo;
if ( key.startsWith( CONFIG_PREFIX ) ) {
hikariProps.setProperty( key.substring( CONFIG_PREFIX.length() ), (String) props.get( key ) );
}
}
return new HikariConfig( hikariProps );
}
@SuppressWarnings("rawtypes")
private static void copyProperty(String srcKey, Map src, String dstKey, Properties dst) {
if ( src.containsKey( srcKey ) ) {
dst.setProperty( dstKey, (String) src.get( srcKey ) );
}
}
private static void copyIsolationSetting(Map props, Properties hikariProps) {
final Integer isolation = ConnectionProviderInitiator.extractIsolation( props );
if ( isolation != null ) {
hikariProps.put(
"transactionIsolation",
ConnectionProviderInitiator.toIsolationConnectionConstantName( isolation )
);
}
}
}