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org.apache.turbine.modules.screens.VelocityDirectScreen |
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1 | package org.apache.turbine.modules.screens; |
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2 | ||
3 | /* |
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4 | * Copyright 2001-2005 The Apache Software Foundation. |
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5 | * |
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6 | * Licensed under the Apache License, Version 2.0 (the "License") |
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7 | * you may not use this file except in compliance with the License. |
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8 | * You may obtain a copy of the License at |
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9 | * |
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10 | * http://www.apache.org/licenses/LICENSE-2.0 |
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11 | * |
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12 | * Unless required by applicable law or agreed to in writing, software |
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13 | * distributed under the License is distributed on an "AS IS" BASIS, |
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14 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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15 | * See the License for the specific language governing permissions and |
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16 | * limitations under the License. |
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17 | */ |
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18 | ||
19 | import org.apache.commons.lang.StringUtils; |
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20 | import org.apache.commons.lang.exception.ExceptionUtils; |
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21 | ||
22 | import org.apache.ecs.ConcreteElement; |
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23 | ||
24 | import org.apache.velocity.context.Context; |
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25 | ||
26 | import org.apache.turbine.Turbine; |
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27 | import org.apache.turbine.TurbineConstants; |
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28 | import org.apache.turbine.services.template.TurbineTemplate; |
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29 | import org.apache.turbine.services.velocity.TurbineVelocity; |
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30 | import org.apache.turbine.util.RunData; |
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31 | ||
32 | /** |
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33 | * VelocityDirectScreen is a screen class which returns its output |
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34 | * directly to the output stream. It can be used if buffering an |
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35 | * output screen isn't possible or the result doesn't fit in the |
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36 | * memory. |
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37 | * <p> |
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38 | * @author <a href="mailto:mbryson@mont.mindspring.com">Dave Bryson</a> |
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39 | * @author <a href="mailto:hps@intermeta.de">Henning P. Schmiedehausen</a> |
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40 | * @version $Id: VelocityDirectScreen.java 264148 2005-08-29 14:21:04Z henning $ |
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41 | */ |
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42 | 0 | public class VelocityDirectScreen |
43 | extends VelocityScreen |
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44 | { |
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45 | /** The prefix for lookup up screen pages */ |
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46 | 0 | private String prefix = TurbineConstants.SCREEN_PREFIX + "/"; |
47 | ||
48 | /** |
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49 | * This builds the Velocity template. |
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50 | * |
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51 | * @param data Turbine information. |
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52 | * @return A ConcreteElement. |
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53 | * @exception Exception, a generic exception. |
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54 | */ |
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55 | public ConcreteElement buildTemplate(RunData data) |
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56 | throws Exception |
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57 | { |
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58 | 0 | Context context = TurbineVelocity.getContext(data); |
59 | ||
60 | 0 | String screenTemplate = data.getTemplateInfo().getScreenTemplate(); |
61 | 0 | String templateName |
62 | = TurbineTemplate.getScreenTemplateName(screenTemplate); |
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63 | ||
64 | // The Template Service could not find the Screen |
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65 | 0 | if (StringUtils.isEmpty(templateName)) |
66 | { |
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67 | 0 | log.error("Screen " + screenTemplate + " not found!"); |
68 | 0 | throw new Exception("Could not find screen for " + screenTemplate); |
69 | } |
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70 | ||
71 | try |
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72 | { |
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73 | 0 | TurbineVelocity.handleRequest(context, |
74 | prefix + templateName, |
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75 | data.getOut()); |
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76 | ||
77 | } |
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78 | 0 | catch (Exception e) |
79 | { |
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80 | // If there is an error, build a $processingException and |
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81 | // attempt to call the error.vm template in the screens |
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82 | // directory. |
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83 | 0 | context.put (TurbineConstants.PROCESSING_EXCEPTION_PLACEHOLDER, e.toString()); |
84 | 0 | context.put (TurbineConstants.STACK_TRACE_PLACEHOLDER, ExceptionUtils.getStackTrace(e)); |
85 | ||
86 | 0 | templateName = Turbine.getConfiguration() |
87 | .getString(TurbineConstants.TEMPLATE_ERROR_KEY, |
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88 | TurbineConstants.TEMPLATE_ERROR_VM); |
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89 | ||
90 | 0 | TurbineVelocity.handleRequest(context, |
91 | prefix + templateName, |
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92 | data.getOut()); |
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93 | 0 | } |
94 | ||
95 | 0 | return null; |
96 | } |
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97 | } |
This report is generated by jcoverage, Maven and Maven JCoverage Plugin. |