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 javax.servlet.jsp.JspException; 024import javax.servlet.ServletException; 025 026import org.apache.log4j.Logger; 027import org.apache.wiki.api.exceptions.ProviderException; 028import org.apache.wiki.util.TextUtil; 029 030/** 031 * Includes an another JSP page, making sure that we actually pass 032 * the WikiContext correctly. 033 * 034 * @since 2.0 035 */ 036// FIXME: Perhaps unnecessary? 037public class IncludeTag extends WikiTagBase { 038 039 private static final long serialVersionUID = 0L; 040 private static final Logger log = Logger.getLogger( IncludeTag.class ); 041 042 protected String m_page; 043 044 public void initTag() 045 { 046 super.initTag(); 047 m_page = null; 048 } 049 050 public void setPage( String page ) 051 { 052 m_page = page; 053 } 054 055 public String getPage() 056 { 057 return m_page; 058 } 059 060 public final int doWikiStartTag() 061 throws IOException, 062 ProviderException 063 { 064 // WikiEngine engine = m_wikiContext.getEngine(); 065 066 return SKIP_BODY; 067 } 068 069 public final int doEndTag() 070 throws JspException 071 { 072 try 073 { 074 String page = m_wikiContext.getEngine().getTemplateManager().findJSP( pageContext, 075 m_wikiContext.getTemplate(), 076 m_page ); 077 078 if( page == null ) 079 { 080 pageContext.getOut().println("No template file called '"+TextUtil.replaceEntities(m_page)+"'"); 081 } 082 else 083 { 084 pageContext.include( page ); 085 } 086 } 087 catch( ServletException e ) 088 { 089 log.warn( "Including failed, got a servlet exception from sub-page. "+ 090 "Rethrowing the exception to the JSP engine.", e ); 091 throw new JspException( e.getMessage() ); 092 } 093 catch( IOException e ) 094 { 095 log.warn( "I/O exception - probably the connection was broken. "+ 096 "Rethrowing the exception to the JSP engine.", e ); 097 throw new JspException( e.getMessage() ); 098 } 099 100 return EVAL_PAGE; 101 } 102}