| Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
| GuestTag |
|
| 6.0;6 |
| 1 | /* | |
| 2 | * Licensed to the Apache Software Foundation (ASF) under one | |
| 3 | * or more contributor license agreements. See the NOTICE file | |
| 4 | * distributed with this work for additional information | |
| 5 | * regarding copyright ownership. The ASF licenses this file | |
| 6 | * to you under the Apache License, Version 2.0 (the | |
| 7 | * "License"); you may not use this file except in compliance | |
| 8 | * with the License. You may obtain a copy of the License at | |
| 9 | * | |
| 10 | * http://www.apache.org/licenses/LICENSE-2.0 | |
| 11 | * | |
| 12 | * Unless required by applicable law or agreed to in writing, | |
| 13 | * software distributed under the License is distributed on an | |
| 14 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | |
| 15 | * KIND, either express or implied. See the License for the | |
| 16 | * specific language governing permissions and limitations | |
| 17 | * under the License. | |
| 18 | */ | |
| 19 | package org.apache.shiro.web.tags; | |
| 20 | ||
| 21 | import javax.servlet.jsp.JspException; | |
| 22 | import javax.servlet.jsp.tagext.TagSupport; | |
| 23 | ||
| 24 | import org.slf4j.Logger; | |
| 25 | import org.slf4j.LoggerFactory; | |
| 26 | ||
| 27 | ||
| 28 | /** | |
| 29 | * JSP tag that renders the tag body if the current user <em>is not</em> known to the system, either because they | |
| 30 | * haven't logged in yet, or because they have no 'RememberMe' identity. | |
| 31 | * | |
| 32 | * <p>The logically opposite tag of this one is the {@link UserTag}. Please read that class's JavaDoc as it explains | |
| 33 | * more about the differences between Authenticated/Unauthenticated and User/Guest semantic differences. | |
| 34 | * | |
| 35 | * @since 0.9 | |
| 36 | */ | |
| 37 | 0 | public class GuestTag extends SecureTag { |
| 38 | ||
| 39 | //TODO - complete JavaDoc | |
| 40 | ||
| 41 | 0 | private static final Logger log = LoggerFactory.getLogger(GuestTag.class); |
| 42 | ||
| 43 | public int onDoStartTag() throws JspException { | |
| 44 | 0 | if (getSubject() == null || getSubject().getPrincipal() == null) { |
| 45 | 0 | if (log.isTraceEnabled()) { |
| 46 | 0 | log.trace("Subject does not exist or does not have a known identity (aka 'principal'). " + |
| 47 | "Tag body will be evaluated."); | |
| 48 | } | |
| 49 | 0 | return TagSupport.EVAL_BODY_INCLUDE; |
| 50 | } else { | |
| 51 | 0 | if (log.isTraceEnabled()) { |
| 52 | 0 | log.trace("Subject exists or has a known identity (aka 'principal'). " + |
| 53 | "Tag body will not be evaluated."); | |
| 54 | } | |
| 55 | 0 | return TagSupport.SKIP_BODY; |
| 56 | } | |
| 57 | } | |
| 58 | ||
| 59 | } |