contentservicebean.java.svn-base

来自「EJB3 Annotation Sample」· SVN-BASE 代码 · 共 154 行

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package com.s7turn.content.session;

import com.s7turn.content.entities.Category;
import com.s7turn.content.entities.Channel;
import com.s7turn.content.entities.Content;
import com.s7turn.content.entities.Directory;
import com.s7turn.content.entities.SubCategory;
import com.s7turn.logging.Logger;
import com.s7turn.sdk.content.ContentInfo;
import java.util.HashMap;  
import java.util.List;
import java.util.Map;  
import javax.annotation.Resource;
import javax.ejb.EJBContext;
import javax.ejb.Stateless;
import javax.persistence.EntityManager;
import javax.persistence.NoResultException;
import javax.persistence.PersistenceContext;
import javax.persistence.Query;
import javax.xml.ws.WebServiceContext;

/**
 *
 * @author Long
 */
@Stateless
public class ContentServiceBean implements ContentServiceLocal {
    
   /**
     * The EJB Context, used to load the user principal
     */
    @Resource private EJBContext ctx;
    
    /**
     * Web SErvice Context, detect if the user is a SOAP user
     */
    @Resource private WebServiceContext wsctx;
    
    /**
     * The persistence Manager
     */
    @PersistenceContext(unitName="s7turn-pu")
    private EntityManager em;
    
    private final static Logger logger = Logger.getLogger( ContentServiceBean.class );
    
    public ContentInfo loadContent(String viewId, String requestLocal)  {
        
        logger.info( "LoadContent by the view of id %s and locale by %s", viewId, requestLocal );
        Query query = em.createNamedQuery("Content.findContentsByResourceId");
        query.setParameter("resourceId", viewId);
        try{
            Content ctt = (Content) query.getSingleResult();
            return ctt;
        }
        catch(NoResultException ex)
        {
            return null;
        }
    }

    public Map loadInlineContent(String viewId, String requestLocale) {
        
        logger.info( "LoadInlineContent the view of id %s and locale by %s", viewId, requestLocale );
        
        Query query = em.createNamedQuery("Content.findInlineContentsByResourceId");
        query.setParameter("resourceId", viewId);
        query.setParameter("locale", requestLocale);
        try{
            List list = query.getResultList();
            Map map = new HashMap();
            for( Object c : list )
            {
                ContentInfo ctt = (ContentInfo) c;
                map.put(ctt.getContentKey(), ctt.getBody());
            }
            return map;
        }
        catch(NoResultException ex)
        {
            return new HashMap();
        }
    }

    public void save(Content t) {
        if( t.getId() == null || new Long(0).equals(  t.getId() ) )
        {
            em.persist(t);
        }
        else
        {
            em.merge(t);
        }
        
    }

    public void remove(Content t) {
        em.remove(em.merge(t));
    }

    public Content findById(Long id) {
        Query q = em.createNamedQuery("Content.findContentById");
        q.setParameter("id", id);
        try{
            return (Content) q.getSingleResult();
        }catch(NoResultException e){
            return null;
        }
    }

    public List<Content> getAllItems() {
        Query q = em.createNamedQuery("Content.findAllContent");
        return q.getResultList();
    }
    
    
    public List getContents( Directory dir )
    {
        Query q = em.createNamedQuery("Content.findContentsInDirectory");
        q.setParameter("directory", dir );
        return q.getResultList();
    }
    
    public List getContents(Channel chn)
    {
        Query q = em.createNamedQuery("Content.findContentByChannel");
        q.setParameter("channel", chn );
        return q.getResultList();        
    }

    public List getContents(Channel chn, Category cate)
    {
        Query q = em.createNamedQuery("Content.findContentByCategory");
        q.setParameter("channel", chn );
        q.setParameter("category", cate );
        return q.getResultList();        
    }

    public List getContents(Channel chn, Category cate, SubCategory sub)
    {
        Query q = em.createNamedQuery("Content.findContentBySubCategory");
        q.setParameter("channel", chn );
        q.setParameter("category", cate );
        q.setParameter("subCategory", sub );
        return q.getResultList();        
    }
 
}