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 org.apache.log4j.Logger; 022import org.apache.wiki.api.exceptions.ProviderException; 023import org.apache.wiki.ui.TemplateManager; 024import org.apache.wiki.util.TextUtil; 025 026import javax.servlet.ServletException; 027import javax.servlet.jsp.JspException; 028import java.io.IOException; 029 030/** 031 * Includes an another JSP page, making sure that we actually pass the WikiContext correctly. 032 * 033 * @since 2.0 034 */ 035// FIXME: Perhaps unnecessary? 036public class IncludeTag extends WikiTagBase { 037 038 private static final long serialVersionUID = 0L; 039 private static final Logger log = Logger.getLogger( IncludeTag.class ); 040 041 protected String m_page; 042 043 @Override 044 public void initTag() { 045 super.initTag(); 046 m_page = null; 047 } 048 049 public void setPage( final String page ) 050 { 051 m_page = page; 052 } 053 054 public String getPage() 055 { 056 return m_page; 057 } 058 059 @Override 060 public final int doWikiStartTag() throws IOException, ProviderException { 061 return SKIP_BODY; 062 } 063 064 @Override 065 public final int doEndTag() throws JspException { 066 try { 067 final String page = m_wikiContext.getEngine().getManager( TemplateManager.class ).findJSP( pageContext, 068 m_wikiContext.getTemplate(), 069 m_page ); 070 071 if( page == null ) { 072 pageContext.getOut().println( "No template file called '" + TextUtil.replaceEntities( m_page ) + "'" ); 073 } else { 074 pageContext.include( page ); 075 } 076 } catch( final ServletException e ) { 077 log.warn( "Including failed, got a servlet exception from sub-page. Rethrowing the exception to the JSP engine.", e ); 078 throw new JspException( e.getMessage() ); 079 } catch( final IOException e ) { 080 log.warn( "I/O exception - probably the connection was broken. Rethrowing the exception to the JSP engine.", e ); 081 throw new JspException( e.getMessage() ); 082 } 083 084 return EVAL_PAGE; 085 } 086 087}