row.java

SAP这个系统的一个转换器

package com.idoc.util.db;

/**
 * <p>Title: IDOC Interface</p>
 * <p>Description: IDOC 转换器</p>
 * <p>Copyright: Copyright (c) 2004</p>
 * <p>Company: SiChuan XinHua</p>
 * @author Richary
 * @version 1.0
 */

import java.util.*;

public class Row implements java.io.Serializable {

  /**
   * 存储所有的字段名
   */
  private Vector ordering = new Vector();

  /**
   * 存储所有字段和值的对应组合
   */
  private HashMap hashtable = new HashMap();

  public Row() {
  }

  /**
   * 添加一个字段名和值
   * 获取数据时循环调用该函数，将所有字段和值写入Hashtable
   * @param name 字段名
   * @param value 该字段的值
   */
  public void put(String name, String value) {
    //if (!hashtable.containsKey(name.toUpperCase()))
      //ordering.addElement(name.toUpperCase());
    //hashtable.put(name.toUpperCase(), value);

    if (!hashtable.containsKey(name))
      ordering.addElement(name);
    hashtable.put(name, value);
//System.out.println("hashtable is " + hashtable.size());
  }

  /**
   * 返回该行记录中，有多少个字段
   * @return
   */
  public int length() {
    return hashtable.size();
  }

  /**
   * 通过字段名得到某一个字段的值
   * @param name
   * @return
   */
  public String get(String name) {
    String ret = "";
    ret = (String)hashtable.get(name);

    if(ret == null) {
      Iterator it = hashtable.keySet().iterator();
      while(it.hasNext()) {
        String tmp = (String)it.next();
        if(tmp.equalsIgnoreCase(name)) {
          ret = (String)hashtable.get(tmp);
          break;
        }
      }
    }

    return ret;
  }

  /**
   * 通过下标得到字段的值
   * @param which
   * @return
   */
  public String get(int which) {
    String key = (String)ordering.elementAt(which);
    return (String)hashtable.get(key);
  }

  /**
   * 通过下标得到某一个字段的字段名
   * @param which
   * @return
   */
  public String getKey(int which) {
    String key = (String)ordering.elementAt(which);
    return key;
  }

  public void setValue(int which, String value) {
    String key = (String)ordering.get(which);
    setValue(key, value);
  }

  public void setValue(String key, String value) {
    //hashtable.remove(key);
    //System.out.println("src value: " + this.hashtable.get(key.toUpperCase()));
    this.hashtable.put(key, value);
    //System.out.println("trg value: " + this.hashtable.get(key.toUpperCase()));
  }

  public void dump() {
    for (Iterator e=hashtable.keySet().iterator(); e.hasNext();) {
      String name = (String)e.next();
      String value = (String)hashtable.get(name);
      //System.out.print(name+"="+value+", ");
    }
  }
  public void removedata(){
   if(this.ordering!=null){
     this.ordering.removeAllElements();
   }
  }

 public void clear(){
   if(this.ordering!=null){
     this.ordering.clear();
     this.ordering=null;
   }
 }
}