##### Coverage Report - org.apache.turbine.modules.pages.DefaultPage

Classes in this File | Line Coverage | Branch Coverage | Complexity
DefaultPage |
85% | 18/21
66% | 4/6
| 2.0;2

1 |  |
     package org.apache.turbine.modules.pages;
2 |  |
3 |  |
4 |  |
     /*
5 |  |
      * Licensed to the Apache Software Foundation (ASF) under one
6 |  |
      * or more contributor license agreements.  See the NOTICE file
7 |  |
      * distributed with this work for additional information
8 |  |
      * regarding copyright ownership.  The ASF licenses this file
9 |  |
      * to you under the Apache License, Version 2.0 (the
10 |  |
      * "License"); you may not use this file except in compliance
11 |  |
      * with the License.  You may obtain a copy of the License at
12 |  |
      *
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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
17 |  |
      * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
18 |  |
      * KIND, either express or implied.  See the License for the
19 |  |
      * specific language governing permissions and limitations
20 |  |
      * under the License.
21 |  |
      */
22 |  |
23 |  |
24 |  |
     import org.apache.commons.lang.StringUtils;
25 |  |
     import org.apache.commons.logging.Log;
26 |  |
     import org.apache.commons.logging.LogFactory;
27 |  |
     import org.apache.turbine.annotation.TurbineLoader;
28 |  |
     import org.apache.turbine.modules.Action;
29 |  |
     import org.apache.turbine.modules.ActionLoader;
30 |  |
     import org.apache.turbine.modules.Layout;
31 |  |
     import org.apache.turbine.modules.LayoutLoader;
32 |  |
     import org.apache.turbine.modules.Page;
33 |  |
     import org.apache.turbine.modules.Screen;
34 |  |
     import org.apache.turbine.modules.ScreenLoader;
35 |  |
     import org.apache.turbine.pipeline.PipelineData;
36 |  |
     import org.apache.turbine.util.RunData;
37 |  |
38 |  |
     /**
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      * When building sites using templates, Screens need only be defined
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      * for templates which require dynamic (database or object) data.
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      *
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      * <p>
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      *
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      * This page can be used on sites where the number of Screens can be
45 |  |
      * much less than the number of templates.  The templates can be
46 |  |
      * grouped in directories with common layouts.  Screen modules are
47 |  |
      * then expected to be placed in packages corresponding with the
48 |  |
      * templates' directories and follow a specific naming scheme.
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      *
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      * <p>
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      *
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      * The template parameter is parsed and and a Screen whose package
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      * matches the templates path and shares the same name minus any
54 |  |
      * extension and beginning with a capital letter is searched for.  If
55 |  |
      * not found, a Screen in a package matching the template's path with
56 |  |
      * name Default is searched for.  If still not found, a Screen with
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      * name Default is looked for in packages corresponding to parent
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      * directories in the template's path until a match is found.
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      *
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      * <p>
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      *
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      * For example if data.getParameters().getString("template") returns
63 |  |
      * /about_us/directions/driving.wm, the search follows
64 |  |
      * about_us.directions.Driving, about_us.directions.Default,
65 |  |
      * about_us.Default, Default, VelocitySiteScreen.
66 |  |
      *
67 |  |
      * <p>
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      *
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      * Only one Layout module is used, since it is expected that any
70 |  |
      * dynamic content will be placed in navigations and screens.  The
71 |  |
      * layout template to be used is found in a similar way to the Screen.
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      * For example the following paths will be searched in the layouts
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      * subdirectory: /about_us/directions/driving.wm,
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      * /about_us/directions/default.wm, /about_us/default.wm, /default.wm.
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      *
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      * <p>
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      *
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      * This approach allows a site with largely static content to be
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      * updated and added to regularly by those with little Java
80 |  |
      * experience.
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      *
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      * <p>
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      *
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      * The code is an almost a complete clone of the FreeMarkerSitePage
85 |  |
      * written by John McNally.  I've only modified it for Template use.
86 |  |
      *
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      * @author <a href="mailto:mbryson@mont.mindspring.com">Dave Bryson</a>
88 |  |
      * @author <a href="mailto:hps@intermeta.de">Henning P. Schmiedehausen</a>
89 |  |
      * @author <a href="mailto:peter@courcoux.biz">Peter Courcoux</a>
90 |  |
      * @version $Id: DefaultPage.java 1709648 2015-10-20 17:08:10Z tv $
91 |  |
      */
92 | 4 |
     public class DefaultPage
93 |  |
         extends Page
94 |  |
     {
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         /** Logging */
96 | 4 |
         protected Log log = LogFactory.getLog(this.getClass());
97 |  |
98 |  |
         /** Injected loader instance */
99 |  |
         @TurbineLoader( Action.class )
100 |  |
         protected ActionLoader actionLoader;
101 |  |
102 |  |
         /** Injected loader instance */
103 |  |
         @TurbineLoader( Screen.class )
104 |  |
         protected ScreenLoader screenLoader;
105 |  |
106 |  |
         /** Injected loader instance */
107 |  |
         @TurbineLoader( Layout.class )
108 |  |
         protected LayoutLoader layoutLoader;
109 |  |
110 |  |
         /**
111 |  |
          * Builds the Page.
112 |  |
          *
113 |  |
          * @param pipelineData Turbine information.
114 |  |
          * @exception Exception, a generic exception.
115 |  |
          */
116 |  |
         @Override
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         public void doBuild(PipelineData pipelineData)
118 |  |
                 throws Exception
119 |  |
         {
120 | 4 |
             RunData data = getRunData(pipelineData);
121 |  |
             // Template pages can use this to set up the context, so it is
122 |  |
             // available to the Action and Screen.  It does nothing here.
123 | 4 |
             doBuildBeforeAction(pipelineData);
124 |  |
125 |  |
             // If an action has been defined, execute it here.  Actions
126 |  |
             // can re-define the template definition.
127 | 4 |
             if (data.hasAction())
128 |  |
             {
129 | 2 |
                 actionLoader.exec(pipelineData, data.getAction());
130 |  |
             }
131 |  |
132 |  |
             // if a redirect was setup in data, don't do anything else
133 | 4 |
             if (StringUtils.isNotEmpty(data.getRedirectURI()))
134 |  |
             {
135 | 0 |
                 return;
136 |  |
             }
137 |  |
138 |  |
             // Template pages can use this to set up default templates and
139 |  |
             // associated class modules.  It does nothing here.
140 | 4 |
             doBuildAfterAction(pipelineData);
141 |  |
142 | 4 |
             String screenName = data.getScreen();
143 |  |
144 | 4 |
             log.debug("Building " + screenName);
145 |  |
146 |  |
             // Ask the Screen for its Layout and then execute the Layout.
147 |  |
             // The Screen can override the getLayout() method to re-define
148 |  |
             // the Layout depending on data passed in via the
149 |  |
             // data.parameters object.
150 | 4 |
             Screen aScreen = screenLoader.getAssembler(screenName);
151 | 4 |
             String layout = aScreen.getLayout(pipelineData);
152 |  |
153 |  |
             // If the Layout has been set to be null, attempt to execute
154 |  |
             // the Screen that has been defined.
155 | 4 |
             if (layout != null)
156 |  |
             {
157 | 4 |
                 layoutLoader.exec(pipelineData, layout);
158 |  |
             }
159 |  |
             else
160 |  |
             {
161 | 0 |
                 screenLoader.exec(pipelineData, screenName);
162 |  |
             }
163 |  |
164 |  |
             // Do any post build actions (overridable by subclasses -
165 |  |
             // does nothing here).
166 | 2 |
             doPostBuild(pipelineData);
167 | 2 |
         }
168 |  |
169 |  |
         /**
170 |  |
          * Can be used by template Pages to stuff the Context into the
171 |  |
          * PipelineData so that it is available to the Action module and the
172 |  |
          * Screen module via getContext().  It does nothing here.
173 |  |
          *
174 |  |
          * @param pipelineData Turbine information.
175 |  |
          * @exception Exception, a generic exception.
176 |  |
          */
177 |  |
         protected void doBuildBeforeAction(PipelineData pipelineData)
178 |  |
                 throws Exception
179 |  |
         {
180 |  |
             // do nothing by default
181 | 1 |
         }
182 |  |
183 |  |
         /**
184 |  |
          * Can be overridden by template Pages to set up data needed to
185 |  |
          * process a template.  It does nothing here.
186 |  |
          *
187 |  |
          * @param pipelineData Turbine information.
188 |  |
          * @exception Exception, a generic exception.
189 |  |
          */
190 |  |
         protected void doBuildAfterAction(PipelineData pipelineData)
191 |  |
                 throws Exception
192 |  |
         {
193 |  |
             // do nothing by default
194 | 1 |
         }
195 |  |
196 |  |
         /**
197 |  |
          * Can be overridden to perform actions when the request is
198 |  |
          * fully processed. It does nothing here.
199 |  |
          *
200 |  |
          * @param pipelineData Turbine information.
201 |  |
          * @exception Exception, a generic exception.
202 |  |
          */
203 |  |
         protected void doPostBuild(PipelineData pipelineData)
204 |  |
                 throws Exception
205 |  |
         {
206 |  |
             // do nothing by default
207 | 0 |
         }
208 |  |
     }