001/* 002 Licensed to the Apache Software Foundation (ASF) under one 003 or more contributor license agreements. See the NOTICE file 004 distributed with this work for additional information 005 regarding copyright ownership. The ASF licenses this file 006 to you under the Apache License, Version 2.0 (the 007 "License"); you may not use this file except in compliance 008 with the License. You may obtain a copy of the License at 009 010 http://www.apache.org/licenses/LICENSE-2.0 011 012 Unless required by applicable law or agreed to in writing, 013 software distributed under the License is distributed on an 014 "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 015 KIND, either express or implied. See the License for the 016 specific language governing permissions and limitations 017 under the License. 018 */ 019package org.apache.wiki.tags; 020 021import java.io.IOException; 022 023import org.apache.wiki.WikiEngine; 024import org.apache.wiki.WikiPage; 025import org.apache.wiki.api.exceptions.ProviderException; 026 027/** 028 * Includes the body in case there is no such page available. 029 * 030 * @since 2.0 031 */ 032public class NoSuchPageTag 033 extends WikiTagBase 034{ 035 private static final long serialVersionUID = 0L; 036 037 private String m_pageName; 038 039 public void initTag() 040 { 041 super.initTag(); 042 m_pageName = null; 043 } 044 045 public void setPage( String name ) 046 { 047 m_pageName = name; 048 } 049 050 public String getPage() 051 { 052 return m_pageName; 053 } 054 055 public int doWikiStartTag() 056 throws IOException, 057 ProviderException 058 { 059 WikiEngine engine = m_wikiContext.getEngine(); 060 WikiPage page; 061 062 if( m_pageName == null ) 063 { 064 page = m_wikiContext.getPage(); 065 } 066 else 067 { 068 page = engine.getPage( m_pageName ); 069 } 070 071 // System.out.println("Checking "+page); 072 073 if( page != null && engine.pageExists( page.getName(), page.getVersion() ) ) 074 { 075 return SKIP_BODY; 076 } 077 078 return EVAL_BODY_INCLUDE; 079 } 080}