signonbean.java

《Java网络程序设计.rar》包括三个网络程序的源代码。

/*
 */

package org.impact.stars.signon.ejb;

import javax.ejb.EntityBean;
import javax.ejb.EntityContext;

import javax.ejb.EJBException;
import javax.ejb.FinderException;
import javax.ejb.CreateException;
import javax.ejb.RemoveException;
import javax.ejb.DuplicateKeyException;



import org.impact.stars.signon.model.SignOnModel;
import org.impact.stars.signon.model.MutableSignOnModel;


import org.impact.stars.signon.exceptions.SignOnAppException;
import org.impact.stars.signon.exceptions.SignOnAppLongIdException;
import org.impact.stars.signon.exceptions.SignOnAppInvalidCharException;

/**
 * Implementation of signon as an Entity Bean
 */
public abstract class SignOnBean implements EntityBean {

    private MutableSignOnModel user;
    private EntityContext context;
    
    public final int MAX_USERID_LENGTH = 10;
    public final int MAX_PASSWD_LENGTH = 10;
    public abstract String getUsername();
    public abstract void setUsername(String username);
    public abstract String getPassword();
    public abstract void setPassword(String password);
    
    public SignOnBean() {}

    public String ejbCreate (String userName, String passWord)
           throws CreateException, DuplicateKeyException, SignOnAppException {

        // check the input data
        if(userName.length() > MAX_USERID_LENGTH)
            throw new SignOnAppLongIdException("User ID cant be more than " +
                       MAX_USERID_LENGTH + " chars long");
        if(passWord.length() > MAX_PASSWD_LENGTH)
            throw new SignOnAppLongIdException("Password cant be more than " +
                       MAX_PASSWD_LENGTH + " chars long");

        if( (userName.indexOf('%') != -1) ||
            (userName.indexOf('*') != -1) )
            throw new SignOnAppInvalidCharException("The user Id cannot " +
                                            "have '%' or '*' characters");

        this.user = new MutableSignOnModel(userName, passWord);
        
            setUsername(user.getUserName());
            setPassword(user.getPassWord());
            
        return (userName);
    }

    /**
     * A post create method for this EJB object.
     * @param userName    a string which represents the id of this user
     * @param passWord    a password for this user
     * @throws          <code>CreateException</code> is thrown if the
     *                  userName could not be created for this user
     * @throws          <code>DuplicateKeyException</code> is thrown if the
     *                  userName already exists
     */
    public void ejbPostCreate(String userName, String passWord)
        throws CreateException, DuplicateKeyException, SignOnAppException {
    }

    public void ejbRemove() throws RemoveException {
    }

    public void setEntityContext(EntityContext ec) {
        context = ec;
    }

    public void ejbLoad() {
    }

    public void ejbStore() {
    }


    public void unsetEntityContext() {}

    public void ejbActivate() {
    }

    public void ejbPassivate() {
    }

    // business methods

    /**
     * @return  the SignOnModel containing the
     * signon data details
     */
    public SignOnModel getDetails() {
        return(new SignOnModel(this.user.getUserName(),
                               this.user.getPassWord()));
    }

    /**
     * update a users password
     */
    public void updatePassWord(String passWord) {
         this.user.setPassWord(passWord);
    }


}