/*!
* This program is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
* Foundation.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
* or from the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* 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 Lesser General Public License for more details.
*
* Copyright (c) 2002-2013 Pentaho Corporation..  All rights reserved.
*/

package org.pentaho.reporting.engine.classic.extensions.datasources.mondrian;

import javax.sql.DataSource;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.Properties;

/**
 * Todo: Document me!
 * <p/>
 * Date: 24.08.2009 Time: 19:01:45
 *
 * @author Thomas Morgner.
 */
public class DriverDataSourceProvider implements DataSourceProvider {
  private Properties properties;
  private String url;
  private String driver;

  public DriverDataSourceProvider() {
    this.properties = new Properties();
  }

  public String getProperty( final String key ) {
    return properties.getProperty( key );
  }

  public Object setProperty( final String key, final String value ) {
    if ( value == null ) {
      return properties.remove( key );
    } else {
      return properties.setProperty( key, value );
    }
  }

  public String getUrl() {
    return url;
  }

  public void setUrl( final String url ) {
    this.url = url;
  }

  public String getDriver() {
    return driver;
  }

  public void setDriver( final String driver ) {
    this.driver = driver;
  }

  public DataSource getDataSource() throws SQLException {
    try {
      if ( driver != null ) {
        Class.forName( driver );
      }
    } catch ( Exception e ) {
      throw new SQLException( "Unable to load the driver: " + driver, e.getMessage() ); //$NON-NLS-1$
    }

    return DriverDataSourceCache.createDataSource( url, properties );
  }

  public String[] getPropertyNames() {
    return (String[]) properties.keySet().toArray( new String[ properties.size() ] );
  }

  public boolean equals( final Object o ) {
    if ( this == o ) {
      return true;
    }
    if ( o == null || getClass() != o.getClass() ) {
      return false;
    }

    final DriverDataSourceProvider that = (DriverDataSourceProvider) o;

    if ( driver != null ? !driver.equals( that.driver ) : that.driver != null ) {
      return false;
    }
    if ( properties.equals( that.properties ) ) {
      return false;
    }
    if ( url != null ? !url.equals( that.url ) : that.url != null ) {
      return false;
    }

    return true;
  }

  public int hashCode() {
    int result;
    result = ( properties != null ? properties.hashCode() : 0 );
    result = 31 * result + ( url != null ? url.hashCode() : 0 );
    result = 31 * result + ( driver != null ? driver.hashCode() : 0 );
    return result;
  }

  public Object getConnectionHash() {
    final ArrayList<Object> hash = new ArrayList<Object>();
    hash.add( getClass().getName() );
    hash.add( properties );
    hash.add( url );
    hash.add( driver );
    return hash;
  }
}