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/*
 * Copyright (c) 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 David Berkman
 * 
 * This file is part of the SmallMind Code Project.
 * 
 * The SmallMind Code Project is free software, you can redistribute
 * it and/or modify it under either, at your discretion...
 * 
 * 1) The terms of GNU Affero General Public License as published by the
 * Free Software Foundation, either version 3 of the License, or (at
 * your option) any later version.
 * 
 * ...or...
 * 
 * 2) The terms of the Apache License, Version 2.0.
 * 
 * The SmallMind Code Project 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
 * General Public License or Apache License for more details.
 * 
 * You should have received a copy of the GNU Affero General Public License
 * and the Apache License along with the SmallMind Code Project. If not, see
 *  or .
 * 
 * Additional permission under the GNU Affero GPL version 3 section 7
 * ------------------------------------------------------------------
 * If you modify this Program, or any covered work, by linking or
 * combining it with other code, such other code is not for that reason
 * alone subject to any of the requirements of the GNU Affero GPL
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 */
package org.smallmind.persistence.sql;

import java.util.concurrent.ConcurrentHashMap;
import javax.sql.CommonDataSource;
import javax.sql.DataSource;
import org.smallmind.nutsnbolts.lang.PerApplicationContext;
import org.smallmind.nutsnbolts.lang.PerApplicationDataManager;
import org.smallmind.persistence.orm.ORMInitializationException;

public class DataSourceManager implements PerApplicationDataManager {

  static {

    PerApplicationContext.setPerApplicationData(DataSourceManager.class, new ConcurrentHashMap());
  }

  public static void register (String key, CommonDataSource dataSource) {

    PerApplicationContext.getPerApplicationData(DataSourceManager.class, ConcurrentHashMap.class).put(key, dataSource);
  }

  public static CommonDataSource getDataSource (String key) {

    CommonDataSource dataSource;

    if ((dataSource = (DataSource)PerApplicationContext.getPerApplicationData(DataSourceManager.class, ConcurrentHashMap.class).get(key)) == null) {
      throw new ORMInitializationException("No DataSource was mapped to the key(%s)", key);
    }

    return dataSource;
  }
}