newsbean.java

NONO一族J2EE新闻系统 采用了目前流行的J2EE技术

/*
 */
package news;
//import java.rmi.RemoteException; 
import javax.ejb.*;
import java.util.*;
import javax.naming.*;
import article.*;
import util.*;


public class NewsBean implements SessionBean {
 
	private  LocalSortHome sortHome = null;
    private  LocalArticleHome articleHome = null;
	private  LocalAdminHome adminHome = null;


    /////////////////////////////////////////////  business methods
    public int getSortCount(){
    	Collection c=null;
    	try{
    		c=sortHome.findAll();
    	}
    	catch(Exception ex){
    		Debug.print("getSortCount() Error\n\n");
    	}
        int j=0;
        Iterator i = c.iterator();
        while (i.hasNext()) {
            i.next();
            j++;
        }
        return j;
    }
	
	public int getMaxSortId(){
    Collection sorts=null;
		LocalSort sort=null;
		int j=0;
    	try{
    		sorts=sortHome.findAll();
			Iterator i=sorts.iterator();
        	while(i.hasNext()){
   					sort=(LocalSort)i.next();
        	}
			j=sort.getSortId().intValue();
    	}
    	catch(Exception ex){
    		Debug.print("getMaxSortId() Error\n\n");
    	}
		
		
        return j;
    }
	
	public int getMaxArticleId(){
    	Collection articles=null;
		LocalArticle article=null;
		int j=0;
    	try{
    		articles=articleHome.findAll();
				Iterator i=articles.iterator();
				while(i.hasNext()){
   				article=(LocalArticle)i.next();
      	}
				j=article.getArticleId().intValue();
    	}
    	catch(Exception ex){
    		Debug.print("getMaxArticleId() Error\n\n");
    	}
		
        
		
        return j;
    }
    
    public int getArticleCount(){
    	Collection c=null;
    	try{
    		c=articleHome.findAll();
    	}
    	catch(Exception ex){
    		Debug.print("getArticleCount() Error\n\n");
    	}
        int j=0;
        Iterator i = c.iterator();
        while (i.hasNext()) {
            i.next();
            j++;
        }
        return j;
    }
    
	synchronized public boolean createAdmin(String id,String password) { 
 		boolean b=false;
        Debug.print("NewsBean createAdmin");
        
        try {
            LocalAdmin admin = adminHome.create(id,password);
			b=true;
        } catch (Exception ex) {
						System.out.println("NewsBean-->createAdmin() ERROR!!!");
						b=false;
            //throw new EJBException(ex.getMessage());
        }
		return b;
   }	
	
   synchronized public void  createSort(String name) { 
 				
        Debug.print("NewsBean createSort");
        int j=getMaxSortId();
        try {
            LocalSort sort = sortHome.create(new Integer(j+1),name);
        } catch (Exception ex) {
						System.out.println("NewsBean-->createSort() ERROR!!!");
            throw new EJBException(ex.getMessage());
        }
   }///111111111/////////////createSort

   synchronized public void dropArticleInSort(int articleId, int sortId) { /*此函数被updateArticle()调用，可能由于数据库的完整性，,外部调用updateArticle()*/
 				Integer sortId2=new Integer(sortId);
 				Integer articleId2=new Integer(articleId);
        Debug.print("NewsBean createArticleInSort");
        try {
            LocalSort sort = sortHome.findByPrimaryKey(sortId2);
            LocalArticle article = articleHome.findByPrimaryKey(articleId2);
            sort.dropArticle(article);
        } catch (Exception ex) {
			System.out.println("NewsBean-->dropArticleInSort() ERROR!!!");
            throw new EJBException(ex.getMessage());
        }
    }////22222222222////////////////////////////////

		synchronized public void createArticle(ArticleDetails details){
				Debug.print("NewsBean createArticle");
				int j=getMaxArticleId();
				try{
					LocalArticle article = articleHome.create(new Integer(j+1),details.getTitle(),details.getContent(), details.getAddTime());
				}
				catch(Exception ex){
					System.out.println("NewsBean-->createArticle() ERROR!!!");
            throw new EJBException(ex.getMessage());
				}
		}
   
   public void createArticleInSort(int articleId, int sortId) { 
 
        Debug.print("NewsBean createArticleInSort");
        try {
            LocalSort sort = sortHome.findByPrimaryKey(new Integer(sortId));
            LocalArticle article = articleHome.findByPrimaryKey(new Integer(articleId));
            //try{
            //	sort.addArticle(article);
          	//}
          	//catch(Exception ee){System.out.println("NewsBean-->createArticleInSort-->sort.addArticle(article); ERROR!!!");}
        		Collection articles=sort.getArticles();
   					articles.add(article);
        } catch (Exception ex) {
			System.out.println("NewsBean-->createArticleInSort() ERROR!!!");
            throw new EJBException(ex.getMessage());
        }
    }/////////////////////33333333333333
 
    synchronized public void removeArticle(int articleId) { 

        Debug.print("NewsBean removeArticle");
        try {
            LocalArticle article = articleHome.findByPrimaryKey(new Integer(articleId));
            article.remove();
        } catch (Exception ex) {
			System.out.println("NewsBean-->removeArticle() ERROR!!!");
            throw new EJBException(ex.getMessage());
        }
    }//////////////4
    
    synchronized public void removeSort(int sortId) { 

        Debug.print("NewsBean removeSort");
        try {
            LocalSort sort = sortHome.findByPrimaryKey(new Integer(sortId));
            sort.remove();
        } catch (Exception ex) {
			System.out.println("NewsBean-->removeSort() ERROR!!!");
            throw new EJBException(ex.getMessage());
        }
    }/////////////////5555555555
    
     synchronized public void removeAdmin(String id) { 

        Debug.print("NewsBean removeAdmin");
        try {
            LocalAdmin admin = adminHome.findByPrimaryKey(id);
            admin.remove();
        } catch (Exception ex) {
			System.out.println("NewsBean-->removeAdmin() ERROR!!!");
            throw new EJBException(ex.getMessage());
        }
    }/////////////////5555555555
    
  synchronized public void updateAdmin(String id,String password) { 

        Debug.print("NewsBean updateAdmin");
        try {
            LocalAdmin admin = adminHome.findByPrimaryKey(id);
            admin.setPassword(password);
        } catch (Exception ex) {
			System.out.println("NewsBean-->updateAdmin() ERROR!!!");
            throw new EJBException(ex.getMessage());
        }
    }///////////////////66

	synchronized public void updateSort(int sortId,String sortName) { 

        Debug.print("NewsBean updateSort");
        try {
            LocalSort sort = sortHome.findByPrimaryKey(new Integer(sortId));
            sort.setSortName(sortName);
        } catch (Exception ex) {
			System.out.println("NewsBean-->updateSort() ERROR!!!");
            throw new EJBException(ex.getMessage());
        }
    }///////////////////66
    
   synchronized public void updateArticle(int articleId,String title,String content,int sortId) { 

        Debug.print("NewsBean updateArticle");
        try {
            LocalArticle article = articleHome.findByPrimaryKey(new Integer(articleId));
             LocalSort sort = sortHome.findByPrimaryKey(new Integer(sortId));
            article.setArticleTitle(title);
            article.setArticleContent(content);
            try{
            	dropArticleInSort(articleId,article.getSort().getSortId().intValue());
          	}catch(Exception ee){System.out.println("没有所属类……");}
            sort.addArticle(article);
        } catch (Exception ex) {
			System.out.println("NewsBean-->updateArticle() ERROR!!!");
            throw new EJBException(ex.getMessage());
        }
    }/////////////////777777777777777
    
    private ArrayList copyArticlesToDetails(Collection articles) {

        ArrayList detailsList = new ArrayList();
        Iterator i = articles.iterator();

        while (i.hasNext()) {
            LocalArticle article = (LocalArticle) i.next();
            ArticleDetails details = new ArticleDetails(article.getArticleId().intValue(),
                article.getArticleTitle(), article.getArticleContent(), article.getAddTime());
            detailsList.add(details);
        }

        return detailsList;
   } // copyArticlesToDetails
		
    

 
   
   
   //////////////////////

	public ArrayList getArticlesOfSort(int sortId){
		ArrayList aArticles=new ArrayList();
			try{