babeldoc-devel

[<tr...@us...>]

Update of /cvsroot/babeldoc/babeldoc/modules/j2ee/src/com/babeldoc/j2ee/resource
In directory sc8-pr-cvs1:/tmp/cvs-serv27662/src/com/babeldoc/j2ee/resource

Added Files:
	JndiDatasource.java 
Log Message:
Re-adding of the J2ee module.  THe most you can say about this is that it compiles.

--- NEW FILE: JndiDatasource.java ---
/*
 * $Header: /cvsroot/babeldoc/babeldoc/modules/j2ee/src/com/babeldoc/j2ee/resource/JndiDatasource.java,v 1.1 2003/08/27 03:15:31 triphop Exp $
 * $DateTime: 2002/07/21 17:01:20 $
 *
 *
 * babeldoc:  universal document processor
 * Copyright (C) 2002 Bruce McDonald, Elogex Inc.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */
package com.babeldoc.j2ee.resource;

import com.babeldoc.core.resource.Resource;
import com.babeldoc.core.resource.ResourceException;
import com.babeldoc.core.resource.ResourceConfigInfo;
import com.babeldoc.core.option.IConfigInfo;
import com.babeldoc.core.GeneralException;
import com.babeldoc.j2ee.ServiceLocator;

import java.sql.Connection;
import java.util.Collection;

import javax.sql.DataSource;

/**
 * Version of IResource to use when running in a J2EE container
 *
 * <p>Title: Babel</p>
 * <p>Description: Universal Document Processor</p>
 * <p>Copyright: Copyright (c) 2002</p>
 * @author Bmcdonald
 * @version 1.0
 */
public class JndiDatasource
    extends Resource {

  /** Config option name */
  public static String JNDI_NAME = "datasourceName";
  public static final String NAMING_URL = "namingUrl";
  public static final String NAMING_PROVIDER = "namingProvider";

  /** service locator object - could be the global or could be specific */
  private ServiceLocator locator;

  /** name of the pool */
  private String poolName;

  /** configuration information object */
  private IConfigInfo info;

  /**
   * Does lazy init of DataSource lookup (expensive operation).
   * @return datasource the datasource object
   * @throws GeneralException
   */
  protected DataSource getDataSource()
      throws GeneralException {
    return locator.getDataSource(poolName);
  }

  /**
   * Setup the resource - this MUST be overridden by child resources
   *
   * @throws ResourceException
   */
  protected void setup()
      throws ResourceException {

    poolName = getInfo().getStrValue(JNDI_NAME);
    String namingUrl = getInfo().getStrValue(NAMING_URL);
    String namingProvider = getInfo().getStrValue(NAMING_PROVIDER);
    if(namingUrl!=null&&namingProvider!=null) {
      try {
        locator = new ServiceLocator(namingUrl, namingProvider);
      } catch (GeneralException e) {
        throw new ResourceException("", e);
      }
    } else {
      locator = ServiceLocator.getGlobal();
    }
  }

  /**
   * Get a new connection.
   * @return the connection
   * @throws ResourceException
   */
  public synchronized Object checkOut()
      throws ResourceException {
    try {
      return getDataSource().getConnection();
    } catch (Exception e ) {
      throw new ResourceException("[ResourceException.checkOut], e");
    }
  }

  /**
   * Checkin this connection
   * @param object the connection to check back in
   * @throws ResourceException
   */
  public synchronized void checkIn(Object object)
      throws ResourceException {
    try {
      ((Connection)object).close();
    } catch (Exception e ) {
      throw new ResourceException("[ResourceException.checkIn]", e);
    }
  }

  /**
   * Get the configuration iformation for this class
   *
   * @return IConfigInfo object
   */
  public IConfigInfo getInfo() {
    if(info==null) {
      info = new ResourceConfigInfo() {
        /**
         * This method returns type specific options
         *
         * @return comments
         */
        public Collection getTypeSpecificOptions() {
          return null;
        }

        /**
         * Return description of this worker
         *
         * @return description
         */
        public String getDescription() {
          return null;
        }

        /**
         * return the name
         *
         * @return
         */
        public String getName() {
          return null;
        }
      };
    }

    return info;
  }
}