connection.java

一个数据挖掘软件ALPHAMINERR的整个过程的JAVA版源代码

/*
 *    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., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

 /**
  * Title: XELOPES Data Mining Library
  * Description: The XELOPES library is an open platform-independent and data-source-independent library for Embedded Data Mining.
  * Copyright: Copyright (c) 2002 Prudential Systems Software GmbH
  * Company: ZSoft (www.zsoft.ru), Prudsys (www.prudsys.com)
  * @author Michael Thess
  * @version 1.2
  */

package com.prudsys.pdm.Olap.Resource;

import java.util.List;

import javax.jmi.reflect.RefPackage;
import javax.olap.OLAPException;
import javax.olap.metadata.Cube;
import javax.olap.metadata.Schema;
import javax.olap.query.querycoremodel.CubeView;
import javax.olap.query.querycoremodel.DimensionView;
import javax.olap.query.querycoremodel.EdgeView;
import javax.olap.query.querycoremodel.MeasureView;
import javax.olap.resource.ConnectionMetaData;

import com.prudsys.pdm.Olap.OlapEngine;

/**
 * Connection class to XELOPES OLAP source. Since XELOPES only uses local JOLAP
 * service, this class just contains a reference to the local olap engine object.
 */
public class Connection extends com.prudsys.pdm.Cwm.Core.Class
  implements javax.olap.resource.Connection
{
  /** Reference to local OLAP engine object. */
  protected OlapEngine olapEngine;

  /**
   * Empty constructor automatically creates local OLAP engine object.
   */
  public Connection() {

    this.olapEngine = new OlapEngine();
  }

  /**
   * Constructor with local OLAP engine object.
   *
   * @param olapEngine local OLAP engine
   */
  public Connection(OlapEngine olapEngine) {

    this.olapEngine = olapEngine;
  }

  /**
   * Returns local OLAP engine object.
   *
   * @return local olap engine object
   */
  public OlapEngine getOlapEngine() {

    return olapEngine;
  }

  // ----------------- JOLAP connection interface ------------------

  public void close() throws OLAPException {

    olapEngine.close();
  }

  public ConnectionMetaData getMetaData() throws OLAPException {

    return olapEngine.getMetaData();
  }

  public RefPackage getTopLevelPackage() throws OLAPException {

    return olapEngine.getTopLevelPackage();
  }

  public List getSchema() throws OLAPException {

    return olapEngine.getSchemas();
  }

  public Schema getCurrentSchema() throws OLAPException {

    return olapEngine.getCurrentSchema();
  }

  public void setCurrentSchema(Schema schema) throws OLAPException {

    olapEngine.setCurrentSchema(schema);
  }

  public List getDimensions() throws OLAPException {

    return olapEngine.getDimensions();
  }

  public List getCubes() throws OLAPException {

    return olapEngine.getCubes();
  }

  public CubeView createCubeView() throws OLAPException {

    return olapEngine.createCubeView();
  }

  public CubeView createCubeView(Cube cube) throws OLAPException {

    return olapEngine.createCubeView(cube);
  }

  public DimensionView createDimensionView() throws OLAPException {

    return olapEngine.createDimensionView();
  }

  public EdgeView createEdgeView() throws OLAPException {

    return olapEngine.createEdgeView();
  }

  public MeasureView createMeasureView() throws OLAPException {

    return olapEngine.createMeasureView();
  }
}