src/java/org/apache/turbine/modules/layouts/VelocityXslLayout.java - turbine-core - Git at Google

 package org.apache.turbine.modules.layouts;

 /* ====================================================================
  * 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.StringReader;

 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;

 import org.apache.ecs.ConcreteElement;

 import org.apache.turbine.TurbineConstants;
 import org.apache.turbine.modules.Layout;
 import org.apache.turbine.modules.ScreenLoader;
 import org.apache.turbine.pipeline.PipelineData;
 import org.apache.turbine.services.velocity.TurbineVelocity;
 import org.apache.turbine.services.xslt.TurbineXSLT;
 import org.apache.turbine.util.RunData;
 import org.apache.turbine.util.template.TemplateNavigation;

 import org.apache.velocity.context.Context;

 /**
  * This Layout module allows Velocity XML templates to be used as layouts.
  * <br><br>
  * Once the (XML) screen and navigation templates have been inserted into
  * the layout template the result is transformed with a XSL stylesheet.
  * The stylesheet (with the same name than the screen template) is loaded
  * and executed by the XSLT service, so it is important that you correctly
  * set up your XSLT service.  If the named stylsheet does not exist the
  * default.xsl stylesheet is executed.  If default.xsl does not exist
  * the XML is merely echoed.
  * <br><br>
  * Since dynamic content is supposed to be primarily located in
  * screens and navigations there should be relatively few reasons to
  * subclass this Layout.
  *
  * @author <a href="mailto:leon@opticode.co.za">Leon Messerschmidt</a>
  * @author <a href="mailto:hps@intermeta.de">Henning P. Schmiedehausen</a>
  * @version $Id$
  */
 public class VelocityXslLayout extends Layout
 {
     /** Logging */
     private static Log log = LogFactory.getLog(VelocityXslLayout.class);

     /** The prefix for lookup up layout pages */
     private String prefix = TurbineConstants.LAYOUT_PREFIX + "/";

     /**
      * Build the layout.  Also sets the ContentType and Locale headers
      * of the HttpServletResponse object.
      * @deprecated Use PipelineData version instead.
      * @param data Turbine information.
      * @exception Exception a generic exception.
      */
     public void doBuild(RunData data)
         throws Exception
     {
         // Get the context needed by Velocity.
         Context context = TurbineVelocity.getContext(data);

         data.getResponse().setContentType("text/html");

         String screenName = data.getScreen();

         log.debug("Loading Screen " + screenName);

         // First, generate the screen and put it in the context so
         // we can grab it the layout template.
         ConcreteElement results =
             ScreenLoader.getInstance().eval(data, screenName);

         String returnValue = (results == null) ? "" : results.toString();

         // variable for the screen in the layout template
         context.put(TurbineConstants.SCREEN_PLACEHOLDER, returnValue);

         // variable to reference the navigation screen in the layout template
         context.put(TurbineConstants.NAVIGATION_PLACEHOLDER,
                     new TemplateNavigation(data));

         // Grab the layout template set in the VelocityPage.
         // If null, then use the default layout template
         // (done by the TemplateInfo object)
         String templateName = data.getTemplateInfo().getLayoutTemplate();

         log.debug("Now trying to render layout " + templateName);

         // Now, generate the layout template.
         String temp = TurbineVelocity.handleRequest(context,
                 prefix + templateName);

         // Finally we do a transformation and send the result
         // back to the browser
         TurbineXSLT.transform(
             data.getTemplateInfo().getScreenTemplate(),
                 new StringReader(temp), data.getOut());
     }

     /**
      * Build the layout.  Also sets the ContentType and Locale headers
      * of the HttpServletResponse object.
      *
      * @param data Turbine information.
      * @exception Exception a generic exception.
      */
     public void doBuild(PipelineData pipelineData)
         throws Exception
     {
         RunData data = (RunData) getRunData(pipelineData);
         // Get the context needed by Velocity.
         Context context = TurbineVelocity.getContext(pipelineData);

         data.getResponse().setContentType("text/html");

         String screenName = data.getScreen();

         log.debug("Loading Screen " + screenName);

         // First, generate the screen and put it in the context so
         // we can grab it the layout template.
         ConcreteElement results =
             ScreenLoader.getInstance().eval(pipelineData, screenName);

         String returnValue = (results == null) ? "" : results.toString();

         // variable for the screen in the layout template
         context.put(TurbineConstants.SCREEN_PLACEHOLDER, returnValue);

         // variable to reference the navigation screen in the layout template
         context.put(TurbineConstants.NAVIGATION_PLACEHOLDER,
                     new TemplateNavigation(data));

         // Grab the layout template set in the VelocityPage.
         // If null, then use the default layout template
         // (done by the TemplateInfo object)
         String templateName = data.getTemplateInfo().getLayoutTemplate();

         log.debug("Now trying to render layout " + templateName);

         // Now, generate the layout template.
         String temp = TurbineVelocity.handleRequest(context,
                 prefix + templateName);

         // Finally we do a transformation and send the result
         // back to the browser
         TurbineXSLT.transform(
             data.getTemplateInfo().getScreenTemplate(),
                 new StringReader(temp), data.getOut());
     }

 }
	package org.apache.turbine.modules.layouts;

	/* ====================================================================
	* 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.StringReader;

	import org.apache.commons.logging.Log;
	import org.apache.commons.logging.LogFactory;

	import org.apache.ecs.ConcreteElement;

	import org.apache.turbine.TurbineConstants;
	import org.apache.turbine.modules.Layout;
	import org.apache.turbine.modules.ScreenLoader;
	import org.apache.turbine.pipeline.PipelineData;
	import org.apache.turbine.services.velocity.TurbineVelocity;
	import org.apache.turbine.services.xslt.TurbineXSLT;
	import org.apache.turbine.util.RunData;
	import org.apache.turbine.util.template.TemplateNavigation;

	import org.apache.velocity.context.Context;

	/**
	* This Layout module allows Velocity XML templates to be used as layouts.
	* <br><br>
	* Once the (XML) screen and navigation templates have been inserted into
	* the layout template the result is transformed with a XSL stylesheet.
	* The stylesheet (with the same name than the screen template) is loaded
	* and executed by the XSLT service, so it is important that you correctly
	* set up your XSLT service. If the named stylsheet does not exist the
	* default.xsl stylesheet is executed. If default.xsl does not exist
	* the XML is merely echoed.
	* <br><br>
	* Since dynamic content is supposed to be primarily located in
	* screens and navigations there should be relatively few reasons to
	* subclass this Layout.
	*
	* @author <a href="mailto:leon@opticode.co.za">Leon Messerschmidt</a>
	* @author <a href="mailto:hps@intermeta.de">Henning P. Schmiedehausen</a>
	* @version $Id$
	*/
	public class VelocityXslLayout extends Layout
	{
	/** Logging */
	private static Log log = LogFactory.getLog(VelocityXslLayout.class);

	/** The prefix for lookup up layout pages */
	private String prefix = TurbineConstants.LAYOUT_PREFIX + "/";

	/**
	* Build the layout. Also sets the ContentType and Locale headers
	* of the HttpServletResponse object.
	* @deprecated Use PipelineData version instead.
	* @param data Turbine information.
	* @exception Exception a generic exception.
	*/
	public void doBuild(RunData data)
	throws Exception
	{
	// Get the context needed by Velocity.
	Context context = TurbineVelocity.getContext(data);

	data.getResponse().setContentType("text/html");

	String screenName = data.getScreen();

	log.debug("Loading Screen " + screenName);

	// First, generate the screen and put it in the context so
	// we can grab it the layout template.
	ConcreteElement results =
	ScreenLoader.getInstance().eval(data, screenName);

	String returnValue = (results == null) ? "" : results.toString();

	// variable for the screen in the layout template
	context.put(TurbineConstants.SCREEN_PLACEHOLDER, returnValue);

	// variable to reference the navigation screen in the layout template
	context.put(TurbineConstants.NAVIGATION_PLACEHOLDER,
	new TemplateNavigation(data));

	// Grab the layout template set in the VelocityPage.
	// If null, then use the default layout template
	// (done by the TemplateInfo object)
	String templateName = data.getTemplateInfo().getLayoutTemplate();

	log.debug("Now trying to render layout " + templateName);

	// Now, generate the layout template.
	String temp = TurbineVelocity.handleRequest(context,
	prefix + templateName);

	// Finally we do a transformation and send the result
	// back to the browser
	TurbineXSLT.transform(
	data.getTemplateInfo().getScreenTemplate(),
	new StringReader(temp), data.getOut());
	}

	/**
	* Build the layout. Also sets the ContentType and Locale headers
	* of the HttpServletResponse object.
	*
	* @param data Turbine information.
	* @exception Exception a generic exception.
	*/
	public void doBuild(PipelineData pipelineData)
	throws Exception
	{
	RunData data = (RunData) getRunData(pipelineData);
	// Get the context needed by Velocity.
	Context context = TurbineVelocity.getContext(pipelineData);

	data.getResponse().setContentType("text/html");

	String screenName = data.getScreen();

	log.debug("Loading Screen " + screenName);

	// First, generate the screen and put it in the context so
	// we can grab it the layout template.
	ConcreteElement results =
	ScreenLoader.getInstance().eval(pipelineData, screenName);

	String returnValue = (results == null) ? "" : results.toString();

	// variable for the screen in the layout template
	context.put(TurbineConstants.SCREEN_PLACEHOLDER, returnValue);

	// variable to reference the navigation screen in the layout template
	context.put(TurbineConstants.NAVIGATION_PLACEHOLDER,
	new TemplateNavigation(data));

	// Grab the layout template set in the VelocityPage.
	// If null, then use the default layout template
	// (done by the TemplateInfo object)
	String templateName = data.getTemplateInfo().getLayoutTemplate();

	log.debug("Now trying to render layout " + templateName);

	// Now, generate the layout template.
	String temp = TurbineVelocity.handleRequest(context,
	prefix + templateName);

	// Finally we do a transformation and send the result
	// back to the browser
	TurbineXSLT.transform(
	data.getTemplateInfo().getScreenTemplate(),
	new StringReader(temp), data.getOut());
	}

	}