numericgenerator.java

来自「CAS在Tomcat中实现单点登录项目,单点登录（Single Sign On 」· Java 代码 · 共 38 行

/*
 * Copyright 2007 The JA-SIG Collaborative. All rights reserved. See license
 * distributed with this file and available online at
 * http://www.ja-sig.org/products/cas/overview/license/
 */
package org.jasig.cas.util;

/**
 * Interface to return a new sequential number for each call.
 * 
 * @author Scott Battaglia
 * @version $Revision: 42053 $ $Date: 2007-06-10 09:17:55 -0400 (Sun, 10 Jun 2007) $
 * @since 3.0
 */
public interface NumericGenerator {

    /**
     * Method to retrieve the next number as a String.
     * 
     * @return the Strign representation of the next number in the sequence
     */
    String getNextNumberAsString();

    /**
     * The guaranteed maximum length of a String returned by this generator.
     * 
     * @return the maximum length
     */
    int maxLength();

    /**
     * The guaranteed minimum length of a String returned by this generator.
     * 
     * @return the minimum length.
     */
    int minLength();
}