package mvcexample.model;

/**
 * An implmentation of the mailing bean interface, using local
 * variables as storage.  Real implementations should use a real
 * persistence mechanism.
 */
public class MailingBeanImpl implements MailingBean {
    // first name
    private String first;
    
    // last name
    private String last;
    
    // email address
    private String email;
    
    // current error
    private String errorString;
    
    /**
     * Create a new MailingBeanImpl
     */
    public MailingBeanImpl() {
    }
    
    /**
     * Get the first name
     */
    public String getFirst() {
        return first;
    }
   
    /**
     * Set the first name
     */
    public void setFirst(String first) {
        this.first = first;
    }
    
    /**
     * Get the last name
     */
    public String getLast() {
        return last;
    }
    
    /**
     * Set the last name
     */
    public void setLast(String last) {
        this.last = last;
    }
   
    /**
     * Get the email address
     */
    public String getEmail() {
        return email;
    }
    
    /**
     * Set the email address
     */
    public void setEmail(String email) {
        this.email = email;
    }
    
    /**
     * Process a subscription to the mailing list.  The doesn't actually
     * do anything other than verify the address has an '@' character in it.
     * Real implementations would talk to the mailing list server here
     */
    public boolean doSubscribe() {
        if (getEmail().indexOf('@') == -1) {
            errorString = "invalid email address";
            return false;
        } else {
            errorString = null;
            return true;
        }
    }
    
    /**
     * Get the error string for the most recent attempt to subscribe.
     */
    public String getErrorString() {
        return errorString;
    }
}