stockwriterbean.java

来自「weblogic应用全实例」· Java 代码 · 共 37 行

//定义本类在包examples.ejb.extensions.readMostly中
package examples.ejb.extensions.readMostly;

/**
 * StockWriterBean是一个实体Bean：
 * 继承一个只读EJB提供读、写能力。
 */
//继承StockBean类
public class StockWriterBean extends StockBean {
  //创建方法，在主接口StockWriterHome定义
  public String ejbCreate(String symbol, double price, long volume)
  {
    this.symbol      = symbol;
    this.price       = price;
    this.volume      = volume;

    yearHigh         = price;
    yearLow          = price;

    return null;
  }
  public void ejbPostCreate(String symbol, double price, long volume)
  {
  }
  //实现远程接口中定义的方法  
  public void updateStock(double price, long volume) {
    this.price = price;
    this.volume = volume;

    if (price < yearLow) yearLow = price;
    if (price > yearHigh) yearHigh = price;
  }

  

}