queryaxis.java

OLAP 的客户端代码

/*
 * ====================================================================
 * This software is subject to the terms of the Common Public License
 * Agreement, available at the following URL:
 *   http://www.opensource.org/licenses/cpl.html .
 * Copyright (C) 2003-2004 TONBELLER AG.
 * All Rights Reserved.
 * You must accept the terms of that agreement to use this software.
 * ====================================================================
 *
 * 
 */
package com.tonbeller.jpivot.olap.mdxparse;

import java.util.List;

/**
 * MDX query axis 
 */
public class QueryAxis implements Exp {

  private String name;
  private boolean nonEmpty;
  private Exp exp;
  private List dimProps; // DIMENSION PROPERTIES

  /**
   * c'tor
   * @see java.lang.Object#Object()
   */
  public QueryAxis(boolean nonEmpty, Exp exp, String name) {
    this.nonEmpty = nonEmpty;
    this.exp = exp;
    this.name = name;
  }

  /**
   * Returns the exp.
   * @return Exp
   */
  public Exp getExp() {
    return exp;
  }

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

  /**
   * Returns the nonEmpty.
   * @return boolean
   */
  public boolean isNonEmpty() {
    return nonEmpty;
  }

  /**
   * Sets the exp.
   * @param exp The exp to set
   */
  public void setExp(Exp exp) {
    this.exp = exp;
  }

  /**
   * Sets the name.
   * @param name The name to set
   */
  public void setName(String name) {
    this.name = name;
  }

  /**
   * Sets the nonEmpty.
   * @param nonEmpty The nonEmpty to set
   */
  public void setNonEmpty(boolean nonEmpty) {
    this.nonEmpty = nonEmpty;
  }

  /**
   * format to MDX
   */
  public String toMdx() {
    StringBuffer sb = new StringBuffer();
    if (nonEmpty) {
      sb.append("NON EMPTY ");
    }
    sb.append(exp.toMdx());
    if (dimProps != null && dimProps.size() > 0) {
      sb.append(" DIMENSION PROPERTIES ");
      for (int i = 0; i < dimProps.size(); i++) {
        if (i > 0)
          sb.append(',');
        sb.append(((CompoundId) dimProps.get(i)).toMdx());
      }
    }
    sb.append(" ON ");
    sb.append(name);
    return sb.toString();
  }

  /**
   * 
   * @see java.lang.Object#clone()
   */
  public Object clone() {
    QueryAxis qa = new QueryAxis(nonEmpty, (Exp) exp.clone(), name);
    qa.setDimProps(dimProps);
    return qa;
  }

  /**
   * @return
   */
  public List getDimProps() {
    return dimProps;
  }

  /**
   * @param dimProps
   */
  public void setDimProps(List dimProps) {
    this.dimProps = dimProps;
  }

  /**
   * @see com.tonbeller.jpivot.olap.mdxparse.Exp#accept
   */
  public void accept(ExpVisitor visitor) {
    visitor.visitQueryAxis(this);
  }

} // End QueryAxis