BaseDatabaseConnectionOptions.java

/* 
 *
 * SchemaCrawler
 * http://sourceforge.net/projects/schemacrawler
 * Copyright (c) 2000-2009, Sualeh Fatehi.
 *
 * 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., 59 Temple Place, Suite 330,
 * Boston, MA 02111-1307, USA.
 *
 */

package schemacrawler.schemacrawler;


import java.sql.Connection;
import java.sql.Driver;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.util.logging.Level;
import java.util.logging.Logger;

import sf.util.Utility;

abstract class BaseDatabaseConnectionOptions
  implements Options, ConnectionOptions
{

  private static final long serialVersionUID = -8141436553988174836L;

  private static final Logger LOGGER = Logger
    .getLogger(BaseDatabaseConnectionOptions.class.getName());

  private String user;
  private String password;

  public final Connection createConnection()
    throws SchemaCrawlerException
  {
    if (user == null)
    {
      LOGGER.log(Level.WARNING, "Database user is not provided");
    }
    if (password == null)
    {
      LOGGER.log(Level.WARNING, "Database password is not provided");
    }
    try
    {
      return DriverManager.getConnection(getConnectionUrl(), user, password);
    }
    catch (final SQLException e)
    {
      throw new SchemaCrawlerException(String
        .format("Could not connect to %s, for user %s",
                getConnectionUrl(),
                user), e);
    }
  }

  public abstract String getConnectionUrl();

  public final Driver getJdbcDriver()
  {
    try
    {
      return DriverManager.getDriver(getConnectionUrl());
    }
    catch (final SQLException e)
    {
      LOGGER.log(Level.WARNING,
                 "Could not get a database driver for database connection URL "
                     + getConnectionUrl());
      return null;
    }
  }

  public final String getPassword()
  {
    return password;
  }

  public final String getUser()
  {
    return user;
  }

  public final void setPassword(final String password)
  {
    this.password = password;
  }

  public final void setUser(final String user)
  {
    this.user = user;
  }

  protected final void loadJdbcDriver(final String jdbcDriverClassName)
    throws SchemaCrawlerException
  {
    if (Utility.isBlank(jdbcDriverClassName))
    {
      throw new SchemaCrawlerException("No JDBC driver class provided");
    }
    try
    {
      Class.forName(jdbcDriverClassName);
    }
    catch (final Exception e)
    {
      throw new SchemaCrawlerException("Could not load JDBC driver, "
                                       + jdbcDriverClassName);
    }
  }

}