httpbasedservicecredentials.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 75 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.authentication.principal;

import java.net.URL;

import org.springframework.util.Assert;

/**
 * The Credentials representing an HTTP-based service. HTTP-based services (such
 * as web applications) are often represented by the URL entry point of the
 * application.
 * 
 * @author Scott Battaglia
 * @version $Revision: 1.3 $ $Date: 2007/04/24 13:01:51 $
 * @since 3.0
 */
public class HttpBasedServiceCredentials implements Credentials {

    /** Unique Serializable ID. */
    private static final long serialVersionUID = 3904681574350991665L;

    /** The callbackURL to check that identifies the application. */
    private final URL callbackUrl;

    /** String form of callbackUrl; */
    private final String callbackUrlAsString;

    /**
     * Constructor that takes the URL of the HTTP-based service and creates the
     * Credentials object. Caches the value of URL.toExternalForm so updates to
     * the URL will not be reflected in a call to toString().
     * 
     * @param callbackUrl the URL representing the service
     * @throws IllegalArgumentException if the callbackUrl is null.
     */
    public HttpBasedServiceCredentials(final URL callbackUrl) {
        Assert.notNull(callbackUrl, "callbackUrl cannot be null");
        this.callbackUrl = callbackUrl;
        this.callbackUrlAsString = callbackUrl.toExternalForm();
    }

    /**
     * @return Returns the callbackUrl.
     */
    public final URL getCallbackUrl() {
        return this.callbackUrl;
    }

    /**
     * Returns the String version of the URL, based on the original URL
     * provided. i.e. this caches the value of URL.toExternalForm()
     */
    public final String toString() {
        return this.callbackUrlAsString;
    }

    public boolean equals(final Object object) {
        if (object == null) {
            return false;
        }

        if (!this.getClass().equals(object.getClass())) {
            return false;
        }

        final HttpBasedServiceCredentials c = (HttpBasedServiceCredentials) object;

        return c.getCallbackUrl().equals(this.getCallbackUrl());
    }
}