recordingbean.java

此程序都是企业级 的数据库开发程序 全面揭示了JAVA对数据库的操作

package ejb.recording;

import java.rmi.RemoteException;
import javax.ejb.EntityBean;
import javax.ejb.EntityContext;


/**
 * This class is our bean implementation where the business methods
 * are implemented. Note that the RecordingBean does not implement
 * the Recording interface.
 */
public class RecordingBean implements EntityBean {

  /**
   * Member variables
   */
  public Integer recordingId;
  public String recordingTitle;
  public String recordingArtist;
  public String catalogNumber;
  public Double listPrice;

  /**
   * These are our business methods that do our work.
   * These should be exposed by our remote interface.
   */

  /**
   * Accessors
   */
  public Integer getRecordingId() {
    return recordingId;
  } 

  public String getRecordingTitle() {
    return recordingTitle;
  } 

  public String getRecordingArtist() {
    return recordingArtist;
  } 

  public String getCatalogNumber() {
    return catalogNumber;
  } 

  public Double getListPrice() {
    return listPrice;
  } 


  /**
   * Mutators
   */
  public void setRecordingId(Integer inId) {
    recordingId = inId;
  } 

  public void setRecordingTitle(String inTitle) {
    recordingTitle = inTitle;
  } 

  public void setRecordingArtist(String inArtist) {
    recordingArtist = inArtist;
  } 

  public void setCatalogNumber(String inNumber) {
    catalogNumber = inNumber;
  } 

  public void setListPrice(Double inPrice) {
    listPrice = inPrice;
  } 


  /**
   * Create an instance of a Recording. 
   * In BMP this method would return the key.
   * The EJB container manages creation.
   * Notice the parameters match those for create() in the Home interface
   */
  public Integer ejbCreate(Integer newId, String newCatalogNumber, 
                           Double newListPrice, String newRecordingArtist, 
                           String newRecordingTitle) {
    recordingId = newId;
    catalogNumber = newCatalogNumber;
    listPrice = newListPrice;
    recordingArtist = newRecordingArtist;
    recordingTitle = newRecordingTitle;

    return null;
  } 

  /**
   * Each ejbCreate must have a matching ejbPostCreate.
   */
  public void ejbPostCreate(Integer newId, String newCatalogNumber, 
                            Double newListPrice, String newRecordingArtist, 
                            String newRecordingTitle) {}

  /**
   * These are the EJB methods, which we must define as
   * an entity bean.
   * Empty implementations for our simple CMP example
   */
  public void ejbActivate() {}

  public void ejbLoad() {}

  public void ejbPassivate() {}

  public void ejbRemove() {}

  public void ejbStore() {}

  public void setEntityContext(EntityContext ctx) {}

  public void unsetEntityContext() {}

}