skillbean.java

21天精通Java,这是一本英文书

package data;

import java.rmi.*;
import java.sql.*;
import java.util.*;
import javax.ejb.*;
import javax.naming.*;
import javax.sql.*;

public abstract class SkillBean implements EntityBean
{

    public abstract Collection getApplicants();
    public abstract void setApplicants(Collection applicants);

    public abstract Collection getJobs();
    public abstract void setJobs(Collection jobs);

    public abstract void setName(String name);

    public abstract String getName ();
    
    public abstract String getDescription ();
    
    public abstract void setDescription (String description);

    // EJB methods start here

    public void ejbPostCreate (String name, String description) {}

    public String ejbCreate (String name, String description) throws CreateException {

/*
        // for BMP, there was a workaround here, namely to call ejbFindByPrimaryKey
        // under CMP, cannot call since doesn't exist.
        // could look up own home interface ... but instead,
        // will rely on unique primary key on RDBMS table
        try {
            ((SkillLocalHome)ctx.getEJBHome()).findByPrimaryKey(name);
            throw new CreateException("Duplicate skill name: "+name);
        }
        catch (FinderException ex) {}
*/
        setName(name);
        setDescription(description);

        return name;
    }
    
    public List ejbHomeLookup(List names) throws FinderException {
        List res = new ArrayList();
        for(Iterator iter = names.iterator(); iter.hasNext(); ) {
            String name = (String)iter.next();
            SkillLocal skill = ((SkillLocalHome)ctx.getEJBLocalHome()).findByPrimaryKey(name);
            if (skill == null) {
                throw new FinderException("Could not find skill named " + name);
            }
            res.add(skill);
        }
        return res;
    }
    

    public void ejbLoad(){
    }

    public void ejbStore(){
    }

    public void ejbPassivate(){
        setName(null);
        setDescription(null);
    }

    public void ejbActivate(){
    }

    public void ejbRemove(){
    }

    private EntityContext ctx;
    
    public void setEntityContext(EntityContext ctx) {
        this.ctx = ctx;
    }    

    public void unsetEntityContext() {
        this.ctx = null;
    }    


    private void error (String msg, Exception ex) {
        String s = "SkillBean: "+msg + "\n" + ex;
        System.out.println(s);
        throw new EJBException(s,ex);
    }
    
}