| package org.apache.turbine.pipeline; |
| |
| /* ==================================================================== |
| * The Apache Software License, Version 1.1 |
| * |
| * Copyright (c) 2001-2003 The Apache Software Foundation. All rights |
| * reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * 3. The end-user documentation included with the redistribution, |
| * if any, must include the following acknowledgment: |
| * "This product includes software developed by the |
| * Apache Software Foundation (http://www.apache.org/)." |
| * Alternately, this acknowledgment may appear in the software itself, |
| * if and wherever such third-party acknowledgments normally appear. |
| * |
| * 4. The names "Apache" and "Apache Software Foundation" and |
| * "Apache Turbine" must not be used to endorse or promote products |
| * derived from this software without prior written permission. For |
| * written permission, please contact apache@apache.org. |
| * |
| * 5. Products derived from this software may not be called "Apache", |
| * "Apache Turbine", nor may "Apache" appear in their name, without |
| * prior written permission of the Apache Software Foundation. |
| * |
| * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR |
| * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
| * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * ==================================================================== |
| * |
| * This software consists of voluntary contributions made by many |
| * individuals on behalf of the Apache Software Foundation. For more |
| * information on the Apache Software Foundation, please see |
| * <http://www.apache.org/>. |
| */ |
| |
| import java.io.IOException; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.turbine.util.RunData; |
| import org.apache.turbine.util.TurbineException; |
| import org.apache.turbine.util.uri.URIConstants; |
| |
| /** |
| * This valve is responsible for setting the 'target' property of the RunData. |
| * If it is not already set it attempts to get the target from the request |
| * parameter 'template'. If the parameter is not set, we use the homepage |
| * specified by the configuration property Turbine.TEMPLATE_HOMEPAGE. |
| * |
| * FIXME: The request parameter which determines the template should be |
| * configurable. |
| * |
| * @author <a href="mailto:james@jamestaylor.org">James Taylor</a> |
| * @author <a href="mailto:peter@courcoux.biz">Peter Courcoux</a> |
| */ |
| public class DetermineTargetValve |
| extends AbstractValve |
| { |
| private static final Log log |
| = LogFactory.getLog( DetermineTargetValve.class ); |
| |
| /** |
| * @see org.apache.turbine.Valve#invoke(RunData, ValveContext) |
| */ |
| public void invoke( PipelineData pipelineData, ValveContext context ) |
| throws IOException, TurbineException |
| { |
| RunData runData = (RunData)getRunData(pipelineData); |
| if ( ! runData.hasScreen() ) |
| { |
| String target = runData.getParameters().getString(URIConstants.CGI_SCREEN_PARAM); |
| |
| if ( target != null ) |
| { |
| runData.setScreen( target ); |
| |
| log.debug( "Set screen target from request parameter" ); |
| } |
| else |
| { |
| /* data.setScreen( Turbine.getConfiguration().getString( |
| Turbine.TEMPLATE_HOMEPAGE ) ); |
| |
| log.debug( "Set target using default value" ); |
| */ |
| log.debug( "No target screen" ); |
| } |
| |
| } |
| |
| if ( log.isDebugEnabled() ) |
| { |
| log.debug( "Screen Target is now: " + runData.getScreen() ); |
| } |
| |
| // Pass control to the next Valve in the Pipeline |
| context.invokeNext( pipelineData ); |
| } |
| } |