##### Coverage Report - org.apache.turbine.modules.layouts.VelocityXslLayout

Classes in this File | Line Coverage | Branch Coverage | Complexity
VelocityXslLayout |
0% | 0/17
N/A | N/A
| 1.0;1

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     package org.apache.turbine.modules.layouts;
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     /*
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      * Licensed to the Apache Software Foundation (ASF) under one
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      * or more contributor license agreements.  See the NOTICE file
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      * distributed with this work for additional information
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      * regarding copyright ownership.  The ASF licenses this file
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      * to you under the Apache License, Version 2.0 (the
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      * "License"); you may not use this file except in compliance
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      * with the License.  You may obtain a copy of the License at
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      *
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      *   http://www.apache.org/licenses/LICENSE-2.0
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      *
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      * Unless required by applicable law or agreed to in writing,
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      * software distributed under the License is distributed on an
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      * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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      * KIND, either express or implied.  See the License for the
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      * specific language governing permissions and limitations
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      * under the License.
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      */
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     import java.io.StringReader;
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     import org.apache.commons.lang.StringUtils;
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     import org.apache.commons.logging.Log;
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     import org.apache.commons.logging.LogFactory;
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     import org.apache.fulcrum.xslt.XSLTService;
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     import org.apache.turbine.TurbineConstants;
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     import org.apache.turbine.annotation.TurbineLoader;
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     import org.apache.turbine.annotation.TurbineService;
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     import org.apache.turbine.modules.Layout;
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     import org.apache.turbine.modules.Screen;
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     import org.apache.turbine.modules.ScreenLoader;
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     import org.apache.turbine.pipeline.PipelineData;
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     import org.apache.turbine.services.velocity.VelocityService;
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     import org.apache.turbine.util.RunData;
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     import org.apache.turbine.util.template.TemplateNavigation;
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     import org.apache.velocity.context.Context;
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     /**
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      * This Layout module allows Velocity XML templates to be used as layouts.
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      * <br><br>
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      * Once the (XML) screen and navigation templates have been inserted into
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      * the layout template the result is transformed with a XSL stylesheet.
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      * The stylesheet (with the same name than the screen template) is loaded
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      * and executed by the XSLT service, so it is important that you correctly
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      * set up your XSLT service.  If the named stylsheet does not exist the
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      * default.xsl stylesheet is executed.  If default.xsl does not exist
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      * the XML is merely echoed.
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      * <br><br>
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      * Since dynamic content is supposed to be primarily located in
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      * screens and navigations there should be relatively few reasons to
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      * subclass this Layout.
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      *
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      * @author <a href="mailto:leon@opticode.co.za">Leon Messerschmidt</a>
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      * @author <a href="mailto:hps@intermeta.de">Henning P. Schmiedehausen</a>
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      * @version $Id: VelocityXslLayout.java 1709648 2015-10-20 17:08:10Z tv $
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      */
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     public class VelocityXslLayout extends Layout
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     {
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         /** Logging */
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         private static Log log = LogFactory.getLog(VelocityXslLayout.class);
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         /** The prefix for lookup up layout pages */
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         private final String prefix = Layout.PREFIX + "/";
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         /** Injected service instance */
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         @TurbineService
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         private VelocityService velocityService;
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         /** Injected service instance */
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         @TurbineService
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         private XSLTService xsltService;
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         /** Injected loader instance */
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         @TurbineLoader( Screen.class )
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         private ScreenLoader screenLoader;
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         /**
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          * Build the layout.  Also sets the ContentType and Locale headers
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          * of the HttpServletResponse object.
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          *
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          * @param pipelineData Turbine information.
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          * @exception Exception a generic exception.
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          */
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         @Override
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         public void doBuild(PipelineData pipelineData)
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             throws Exception
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         {
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             RunData data = getRunData(pipelineData);
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             // Get the context needed by Velocity.
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             Context context = velocityService.getContext(pipelineData);
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             data.getResponse().setContentType("text/html");
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             String screenName = data.getScreen();
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             log.debug("Loading Screen " + screenName);
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             // First, generate the screen and put it in the context so
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             // we can grab it the layout template.
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             String results = screenLoader.eval(pipelineData, screenName);
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             String returnValue = StringUtils.defaultIfEmpty(results, StringUtils.EMPTY);
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             // variable for the screen in the layout template
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             context.put(TurbineConstants.SCREEN_PLACEHOLDER, returnValue);
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             // variable to reference the navigation screen in the layout template
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             context.put(TurbineConstants.NAVIGATION_PLACEHOLDER,
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                         new TemplateNavigation(data));
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             // Grab the layout template set in the VelocityPage.
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             // If null, then use the default layout template
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             // (done by the TemplateInfo object)
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             String templateName = data.getTemplateInfo().getLayoutTemplate();
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             log.debug("Now trying to render layout " + templateName);
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             // Now, generate the layout template.
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             String temp = velocityService.handleRequest(context,
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                     prefix + templateName);
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             // Finally we do a transformation and send the result
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             // back to the browser
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             xsltService.transform(
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                 data.getTemplateInfo().getScreenTemplate(),
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                     new StringReader(temp), data.getResponse().getWriter());
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         }
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     }