LocalServer.java :  » ERP-CRM-Financial » JFire-1.0.1 » org » nightlabs » jfire » server » Java Open Source

/* *****************************************************************************
 * JFire - it's hot - Free ERP System - http://jfire.org                       *
 * Copyright (C) 2004-2005 NightLabs - http://NightLabs.org                    *
 *                                                                             *
 * This library is free software; you can redistribute it and/or               *
 * modify it under the terms of the GNU Lesser General Public                  *
 * License as published by the Free Software Foundation; either                *
 * version 2.1 of the License, or (at your option) any later version.          *
 *                                                                             *
 * This library 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 library; if not, write to the                       *
 *     Free Software Foundation, Inc.,                                         *
 *     51 Franklin St, Fifth Floor,                                            *
 *     Boston, MA  02110-1301  USA                                             *
 *                                                                             *
 * Or get it online :                                                          *
 *     http://opensource.org/licenses/lgpl-license.php                         *
 *                                                                             *
 *                                                                             *
 ******************************************************************************/

package org.nightlabs.jfire.server;

import java.io.Serializable;
import java.util.Iterator;

import javax.jdo.PersistenceManager;

import org.nightlabs.util.Util;

import javax.jdo.annotations.Persistent;
import org.nightlabs.jfire.server.id.LocalServerID;
import javax.jdo.annotations.InheritanceStrategy;
import javax.jdo.annotations.Inheritance;
import javax.jdo.annotations.PrimaryKey;
import javax.jdo.annotations.PersistenceCapable;
import javax.jdo.annotations.IdentityType;
import javax.jdo.annotations.PersistenceModifier;

/**
 * @author marco
 *
 * @jdo.persistence-capable
 *    identity-type="application"
 *    objectid-class="org.nightlabs.jfire.server.id.LocalServerID"
 *    detachable="true"
 *    table="JFireBase_LocalServer"
 *
 * @jdo.inheritance strategy="new-table"
 *
 * @jdo.create-objectid-class
 */
@PersistenceCapable(
  objectIdClass=LocalServerID.class,
  identityType=IdentityType.APPLICATION,
  detachable="true",
  table="JFireBase_LocalServer")
@Inheritance(strategy=InheritanceStrategy.NEW_TABLE)
public class LocalServer implements Serializable
{
  private static final long serialVersionUID = 2L;

  public static LocalServer getLocalServer(PersistenceManager pm)
  {
    Iterator<LocalServer> it = pm.getExtent(LocalServer.class).iterator();
    if (!it.hasNext())
      throw new IllegalStateException("LocalServer undefined in datastore!");
    return it.next();
  }

  public LocalServer() { }

  public LocalServer(Server _server) {
    this.serverID = _server.getServerID();
    this.server = _server;
  }

  /**
   * @jdo.field primary-key="true"
   */
  @PrimaryKey
  private String serverID;

  /**
   * @jdo.field persistence-modifier="persistent"
   */
  @Persistent(persistenceModifier=PersistenceModifier.PERSISTENT)
  private Server server;

  public String getServerID() {
    return serverID;
  }

  /**
   * @return Returns the server.
   */
  public Server getServer() {
    return server;
  }

  @Override
  public int hashCode() {
    final int prime = 31;
    int result = 1;
    result = prime * result + ((serverID == null) ? 0 : serverID.hashCode());
    return result;
  }

  @Override
  public boolean equals(Object obj) {
    if (this == obj) return true;
    if (obj == null) return false;
    if (getClass() != obj.getClass()) return false;
    final LocalServer other = (LocalServer) obj;
    return Util.equals(this.serverID, other.serverID);
  }

  @Override
  public String toString() {
    return this.getClass().getName() + '@' + Integer.toHexString(System.identityHashCode(this)) + '[' + serverID + ']';
  }
}