/
MultiTenancyStrategy.java
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/
MultiTenancyStrategy.java
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/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2011, Red Hat Inc. or third-party contributors as
* indicated by the @author tags or express copyright attribution
* statements applied by the authors. All third-party contributions are
* distributed under license by Red Hat Inc.
*
* This copyrighted material is made available to anyone wishing to use, modify,
* copy, or redistribute it subject to the terms and conditions of the GNU
* Lesser General Public License, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this distribution; if not, write to:
* Free Software Foundation, Inc.
* 51 Franklin Street, Fifth Floor
* Boston, MA 02110-1301 USA
*/
package org.hibernate;
import java.util.Map;
import org.jboss.logging.Logger;
import org.hibernate.cfg.Environment;
import org.hibernate.internal.CoreMessageLogger;
/**
* Describes the methods for multi-tenancy understood by Hibernate.
*
* @author Steve Ebersole
*/
public enum MultiTenancyStrategy {
/**
* Multi-tenancy implemented by use of discriminator columns.
*/
DISCRIMINATOR,
/**
* Multi-tenancy implemented as separate schemas.
*/
SCHEMA,
/**
* Multi-tenancy implemented as separate databases.
*/
DATABASE,
/**
* No multi-tenancy
*/
NONE;
private static final CoreMessageLogger LOG = Logger.getMessageLogger(
CoreMessageLogger.class,
MultiTenancyStrategy.class.getName()
);
public static MultiTenancyStrategy fromConfigValue(Object value) {
if ( value == null ) {
return MultiTenancyStrategy.NONE;
}
if ( MultiTenancyStrategy.class.isInstance( value ) ) {
return (MultiTenancyStrategy) value;
}
return fromExternalName( value.toString() );
}
private static MultiTenancyStrategy fromExternalName(String strategyName) {
try {
return MultiTenancyStrategy.valueOf( strategyName.toUpperCase() );
}
catch ( RuntimeException e ) {
LOG.warn( "Unknown multi tenancy strategy [ " +strategyName +" ], using MultiTenancyStrategy.NONE." );
return MultiTenancyStrategy.NONE;
}
}
public static MultiTenancyStrategy determineMultiTenancyStrategy(Map properties) {
return fromConfigValue( properties.get( Environment.MULTI_TENANT ) );
}
}