MySports App/src/example/mysports/persistence/MySportsProvider.java

/*******************************************************************************
 * Copyright (c) 2010-2012 Oracle. All rights reserved.
 * This program and the accompanying materials are made available under the 
 * terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0 
 * which accompanies this distribution. 
 * The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
 * and the Eclipse Distribution License is available at 
 * http://www.eclipse.org/org/documents/edl-v10.php.
 *
 * Contributors:
 *  dclarke - EclipseLink 2.4 - MySports Demo Bug 344608
 ******************************************************************************/
package example.mysports.persistence;

import java.util.HashMap;
import java.util.Map;

import javax.persistence.EntityManagerFactory;
import javax.persistence.spi.PersistenceUnitInfo;

import org.eclipse.persistence.config.PersistenceUnitProperties;
import org.eclipse.persistence.internal.jpa.deployment.JPAInitializer;
import org.eclipse.persistence.jpa.PersistenceProvider;

import example.mysports.MySportsConfig;

/**
 * Custom {@link javax.persistence.spi.PersistenceProvider} to support
 * EclipseLink JPA usage with an {@link EntityManagerFactory} per tenant. This
 * implementation is specific to the MySports example
 * 
 * @author dclarke
 * @since EclipseLink 2.4
 */
@SuppressWarnings({ "rawtypes", "unchecked" })
public class MySportsProvider extends PersistenceProvider {

    public static final String SEPARATOR = "-";

    @Override
    public EntityManagerFactory createEntityManagerFactory(String name, Map properties) {
        String puName = name;
        Map props = properties == null ? new HashMap() : properties;

        if (name.contains(SEPARATOR)) {
            int sepIndex = name.indexOf(SEPARATOR);
            puName =  name.substring(0, sepIndex);
            props.put(PersistenceUnitProperties.SESSION_NAME, name);
            props.put(PersistenceUnitProperties.MULTITENANT_SHARED_EMF, Boolean.FALSE.toString());
            props.put(MySportsConfig.LEAGUE_CONTEXT, name.substring(sepIndex + 1));
        }

        return super.createEntityManagerFactory(puName, props);
    }

    @Override
    public EntityManagerFactory createContainerEntityManagerFactory(PersistenceUnitInfo info, Map properties) {
        // TODO Auto-generated method stub
        return super.createContainerEntityManagerFactory(info, properties);
    }

    @Override
    public JPAInitializer getInitializer(String emName, Map m) {
        ClassLoader classLoader = getClassLoader(emName, m);
        return MySportsProviderInitializer.getJavaSECMPInitializer(classLoader);
    }
}