| Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
| VelocityService |
|
| 1.0;1 |
| 1 | package org.apache.turbine.services.velocity; | |
| 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 | * | |
| 13 | * http://www.apache.org/licenses/LICENSE-2.0 | |
| 14 | * | |
| 15 | * Unless required by applicable law or agreed to in writing, | |
| 16 | * 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 java.io.OutputStream; | |
| 25 | import java.io.Writer; | |
| 26 | ||
| 27 | import org.apache.turbine.pipeline.PipelineData; | |
| 28 | import org.apache.turbine.services.Service; | |
| 29 | import org.apache.turbine.util.RunData; | |
| 30 | import org.apache.turbine.util.TurbineException; | |
| 31 | ||
| 32 | import org.apache.velocity.context.Context; | |
| 33 | ||
| 34 | /** | |
| 35 | * Implementations of the VelocityService interface. | |
| 36 | * | |
| 37 | * @author <a href="mailto:john.mcnally@clearink.com">John D. McNally</a> | |
| 38 | * @author <a href="mailto:mbryson@mont.mindspring.com">Dave Bryson</a> | |
| 39 | * @author <a href="mailto:jvanzyl@periapt.com">Jason van Zyl</a> | |
| 40 | * @author <a href="mailto:hps@intermeta.de">Henning P. Schmiedehausen</a> | |
| 41 | * @author <a href="mailto:peter@courcoux.biz">Peter Courcoux</a> | |
| 42 | * @version $Id: VelocityService.java 615328 2008-01-25 20:25:05Z tv $ | |
| 43 | */ | |
| 44 | public interface VelocityService | |
| 45 | extends Service | |
| 46 | { | |
| 47 | /** The Service Name */ | |
| 48 | String SERVICE_NAME = "VelocityService"; | |
| 49 | ||
| 50 | /** Key for storing the Context in the RunData object */ | |
| 51 | String CONTEXT = "VELOCITY_CONTEXT"; | |
| 52 | ||
| 53 | /** The default extension of Velocity Pages */ | |
| 54 | String VELOCITY_EXTENSION = "vm"; | |
| 55 | ||
| 56 | /** The Key for storing the RunData Object in the Context */ | |
| 57 | String RUNDATA_KEY = "data"; | |
| 58 | ||
| 59 | /** The Key for storing the PipelineData Object in the Context */ | |
| 60 | String PIPELINEDATA_KEY = "pipelineData"; | |
| 61 | ||
| 62 | /** Shall we catch Velocity Errors and report them? */ | |
| 63 | String CATCH_ERRORS_KEY = "catch.errors"; | |
| 64 | ||
| 65 | /** Default: Yes */ | |
| 66 | boolean CATCH_ERRORS_DEFAULT = true; | |
| 67 | ||
| 68 | /** | |
| 69 | * Process the request and fill in the template with the values | |
| 70 | * you set in the Context. | |
| 71 | * | |
| 72 | * @param context A Context. | |
| 73 | * @param template A String with the filename of the template. | |
| 74 | * @return The process template as a String. | |
| 75 | * @exception Exception a generic exception. | |
| 76 | */ | |
| 77 | String handleRequest(Context context, String template) | |
| 78 | throws Exception; | |
| 79 | ||
| 80 | /** | |
| 81 | * Process the request and fill in the template with the values | |
| 82 | * you set in the Context. | |
| 83 | * | |
| 84 | * @param context A Context. | |
| 85 | * @param filename A String with the filename of the template. | |
| 86 | * @param out A OutputStream where we will write the process template as | |
| 87 | * a String. | |
| 88 | * @throws TurbineException Any exception trown while processing will be | |
| 89 | * wrapped into a TurbineException and rethrown. | |
| 90 | */ | |
| 91 | void handleRequest(Context context, String filename, OutputStream out) | |
| 92 | throws TurbineException; | |
| 93 | ||
| 94 | /** | |
| 95 | * Process the request and fill in the template with the values | |
| 96 | * you set in the Context. | |
| 97 | * | |
| 98 | * @param context A Context. | |
| 99 | * @param filename A String with the filename of the template. | |
| 100 | * @param writer A Writer where we will write the process template as | |
| 101 | * a String. | |
| 102 | * @throws TurbineException Any exception trown while processing will be | |
| 103 | * wrapped into a TurbineException and rethrown. | |
| 104 | */ | |
| 105 | void handleRequest(Context context, String filename, Writer writer) | |
| 106 | throws TurbineException; | |
| 107 | ||
| 108 | /** | |
| 109 | * Create an empty WebContext object. | |
| 110 | * | |
| 111 | * @return An empty WebContext object. | |
| 112 | */ | |
| 113 | Context getContext(); | |
| 114 | ||
| 115 | /** | |
| 116 | * This method returns a new, empty Context object. | |
| 117 | * | |
| 118 | * @return A WebContext. | |
| 119 | */ | |
| 120 | Context getNewContext(); | |
| 121 | ||
| 122 | /** | |
| 123 | * Create a Context from the RunData object. Adds a pointer to | |
| 124 | * the RunData object to the Context so that RunData is available in | |
| 125 | * the templates. | |
| 126 | * | |
| 127 | * @param data The Turbine RunData object. | |
| 128 | * @return A clone of the Context needed by Velocity. | |
| 129 | */ | |
| 130 | Context getContext(RunData data); | |
| 131 | ||
| 132 | /** | |
| 133 | * Create a Context from the RunData object. Adds a pointer to | |
| 134 | * the RunData object to the Context so that RunData is available in | |
| 135 | * the templates. | |
| 136 | * | |
| 137 | * @param data The Turbine RunData object. | |
| 138 | * @return A clone of the Context needed by Velocity. | |
| 139 | */ | |
| 140 | Context getContext(PipelineData pipelineData); | |
| 141 | ||
| 142 | ||
| 143 | ||
| 144 | /** | |
| 145 | * Performs post-request actions (releases context | |
| 146 | * tools back to the object pool). | |
| 147 | * | |
| 148 | * @param context a Velocity Context | |
| 149 | */ | |
| 150 | void requestFinished(Context context); | |
| 151 | } |